PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2...
Transcript of PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2...
![Page 1: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/1.jpg)
Reading Quiz
What is the SI unit for the strength of the magnetic field?
A. Gauss B. Henry C. Tesla D. Becquerel E. Bohr magneton
2. What is the shape of the trajectory that a charged particle follows in a uniform magnetic field?
A. Helix B. Parabola C. Circle D. Ellipse E. Hyperbola
![Page 2: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/2.jpg)
3. The magnetic field of a point charge is given by
A. Biot-Savart’s law. B. Faraday’s law. C. Gauss’s law. D. Ampère’s law. E. Einstein’s law.
4. The magnetic field of a straight, current-carrying wire is
A. parallel to the wire. B. inside the wire. C. perpendicular to the wire. D. around the wire. E. zero.
Reading Quiz
![Page 3: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/3.jpg)
What is the SI unit for the strength of the magnetic field?
A. Gauss B. Henry C. Tesla D. Becquerel E. Bohr magneton
![Page 4: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/4.jpg)
What is the shape of the trajectory that a charged particle follows in a uniform magnetic field?
A. Helix B. Parabola C. Circle D. Ellipse E. Hyperbola
![Page 5: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/5.jpg)
The magnetic field of a point charge is given by
A. Biot-Savart’s law. B. Faraday’s law. C. Gauss’s law. D. Ampère’s law. E. Einstein’s law.
![Page 6: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/6.jpg)
The magnetic field of a straight, current-carrying wire is
A. parallel to the wire. B. inside the wire. C. perpendicular to the wire. D. around the wire. E. zero.
![Page 7: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/7.jpg)
General Physics 2 Magnetism 7
Field Around Magnet • Use a compass to map the direction of the
magnetic field surrounding a magnet. • White board your results. In particular:
– how does the strength of the field vary with distance from the wire?
– how does the field direction relate to the poles of the magnet?
![Page 8: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/8.jpg)
General Physics 2 Magnetism 8
Activity: Map Field of Magnets
• Use iron filings to map the field of a – bar magnet – horseshoe magnet
• White board results – draw field lines. – how might magnets generate magnetic fields?
![Page 9: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/9.jpg)
General Physics 2 Magnetism 9
Magnetic Field Lines
• direction of magnetic field, B, is parallel to field line
• number of lines per area is proportional to strength of field
• field lines point from N to S • field lines form closed loops
![Page 10: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/10.jpg)
General Physics 2 Magnetism 10
Magnetism
No magnetic monopoles!
![Page 11: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/11.jpg)
General Physics 2 Magnetism 11
Magnets are similar to Electric Dipoles
![Page 12: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/12.jpg)
General Physics 2 Magnetism 12
Ferromagnetism
• Ferromagnetic material – iron or other materials that can be
made into magnets
• You can make a magnet from iron by placing it in a strong B field – individual domains become
aligned with external B field
• Loss of magnetism from: – dropping – heating
• Curie temperature – 1043 K for iron
Random Preferentially downwards
![Page 13: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/13.jpg)
General Physics 2 Magnetism 13
Cross Product – Right Hand Rule
![Page 14: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/14.jpg)
General Physics 2 Magnetism 14
Specifying 3 Dimensions
• out of page • tip of arrow
• into page • tail of arrow
![Page 15: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/15.jpg)
General Physics 2 Magnetism 15
Force on a moving charge • Right Hand Rule (#2)
– qv = fingers – B = bend fingers – F = thumb
• Find the direction of the force on a negative charge for each diagram shown.
![Page 16: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/16.jpg)
General Physics 2 Magnetism 16
![Page 17: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/17.jpg)
General Physics 2 Magnetism 17
Think-Pair-Share
• Derive an expression for the radius of an e-’s orbit in a uniform B field. Express your answer in terms of me, v, qe, and B. Turn in your solution!
![Page 18: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/18.jpg)
General Physics 2 Magnetism 18
Earth’s Magnetic Field
• magnetic declination – angular difference
between geographic north and magnetic north
– varies with latitude
![Page 19: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/19.jpg)
![Page 20: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/20.jpg)
![Page 21: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/21.jpg)
Tactics: Right-hand rule for fields
![Page 22: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/22.jpg)
The Source of the Magnetic Field: Moving Charges
The magnetic field of a charged particle q moving with velocity v is given by the Biot-Savart law:
where r is the distance from the charge and θ is the angle between v and r. The Biot-Savart law can be written in terms of the cross product as
![Page 23: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/23.jpg)
EXAMPLE 33.1 The magnetic field of a proton
QUESTION:
![Page 24: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/24.jpg)
EXAMPLE 33.1 The magnetic field of a proton
![Page 25: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/25.jpg)
EXAMPLE 33.1 The magnetic field of a proton
![Page 26: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/26.jpg)
EXAMPLE 33.1 The magnetic field of a proton
![Page 27: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/27.jpg)
The Magnetic Field of a Current
The magnetic field of a long, straight wire carrying current I, at a distance d from the wire is
The magnetic field at the center of a coil of N turns and radius R, carrying a current I is
![Page 28: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/28.jpg)
EXAMPLE 33.4 The magnetic field strength near a heater wire
QUESTION:
![Page 29: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/29.jpg)
EXAMPLE 33.4 The magnetic field strength near a heater wire
![Page 30: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/30.jpg)
General Physics 2 Magnetism 30
Practice Problems
• Magnetism: Worksheets 1 and 2
• Finish before next class
![Page 31: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/31.jpg)
![Page 32: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/32.jpg)
Tactics: Finding the magnetic field direction of a current loop
![Page 33: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/33.jpg)
Magnetic Dipoles The magnetic dipole moment of a current loop enclosing an area A is defined as
The SI units of the magnetic dipole moment are A m2. The on-axis field of a magnetic dipole is
![Page 34: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/34.jpg)
EXAMPLE 33.7 The field of a magnetic dipole
QUESTIONS:
![Page 35: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/35.jpg)
EXAMPLE 33.7 The field of a magnetic dipole
![Page 36: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/36.jpg)
Tactics: Evaluating line integrals
![Page 37: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/37.jpg)
Ampère’s law
Whenever total current Ithrough passes through an area bounded by a closed curve, the line integral of the magnetic field around the curve is given by Ampère’s law:
![Page 38: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/38.jpg)
The strength of the uniform magnetic field inside a solenoid is
where n = N/l is the number of turns per unit length.
![Page 39: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/39.jpg)
The Magnetic Force on a Moving Charge
The magnetic force on a charge q as it moves through a magnetic field B with velocity v is
where α is the angle between v and B.
![Page 40: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/40.jpg)
![Page 41: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/41.jpg)
Magnetic Forces on Current-Carrying Wires
Consider a segment of wire of length l carrying current I in the direction of the vector l. The wire exists in a constant magnetic field B. The magnetic force on the wire is
where α is the angle between the direction of the current and the magnetic field.
![Page 42: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/42.jpg)
EXAMPLE 33.13 Magnetic Levitation
QUESTION:
![Page 43: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/43.jpg)
EXAMPLE 33.13 Magnetic Levitation
![Page 44: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/44.jpg)
![Page 45: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/45.jpg)
General Principles
![Page 46: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/46.jpg)
General Principles
![Page 47: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/47.jpg)
General Principles
![Page 48: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/48.jpg)
Applications
![Page 49: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/49.jpg)
Applications
![Page 50: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/50.jpg)
Applications
![Page 51: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/51.jpg)
Does the compass needle rotate clockwise (cw), counterclockwise (ccw) or not at all?
A. Clockwise B. Counterclockwise C. Not at all
![Page 52: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/52.jpg)
A. Clockwise B. Counterclockwise C. Not at all
Does the compass needle rotate clockwise (cw), counterclockwise (ccw) or not at all?
![Page 53: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/53.jpg)
The magnetic field at the position P points
A. Into the page. B. Up. C. Down. D. Out of the page.
![Page 54: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/54.jpg)
A. Into the page. B. Up. C. Down. D. Out of the page.
The magnetic field at the position P points
![Page 55: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/55.jpg)
The positive charge is moving straight out of the page. What is the direction of the magnetic field at the position of the dot?
A. Left B. Right C. Down D. Up
![Page 56: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/56.jpg)
A. Left B. Right C. Down D. Up
The positive charge is moving straight out of the page. What is the direction of the magnetic field at the position of the dot?
![Page 57: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/57.jpg)
What is the current direction in this loop? And which side of the loop is the north pole?
A. Current counterclockwise, north pole on bottom B. Current clockwise; north pole on bottom C. Current counterclockwise, north pole on top D. Current clockwise; north pole on top
![Page 58: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/58.jpg)
A. Current counterclockwise, north pole on bottom B. Current clockwise; north pole on bottom C. Current counterclockwise, north pole on top D. Current clockwise; north pole on top
What is the current direction in this loop? And which side of the loop is the north pole?
![Page 59: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/59.jpg)
A. Left B. Into the page C. Out of the page D. Up E. Down
An electron moves perpendicular to a magnetic field. What is the direction of ?
![Page 60: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/60.jpg)
A. Left B. Into the page C. Out of the page D. Up E. Down
An electron moves perpendicular to a magnetic field. What is the direction of ?
![Page 61: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/61.jpg)
What is the current direction in the loop?
A. Out of the page at the top of the loop, into the page at the bottom.
B. Out of the page at the bottom of the loop, into the page at the top.
![Page 62: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/62.jpg)
A. Out of the page at the top of the loop, into the page at the bottom.
B. Out of the page at the bottom of the loop, into the page at the top.
What is the current direction in the loop?
![Page 63: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/63.jpg)
Which magnet or magnets produced this induced magnetic dipole?
A. a or d B. a or c C. b or d D. b or c E. any of a, b, c or d
![Page 64: PHYS140 Ch33 D1 RQ - Siena Collegemmccolgan/GP140S11/Phys140_Ch33_D1_RQ.… · General Physics 2 Magnetism 30 Practice Problems • Magnetism: Worksheets 1 and 2 • Finish before](https://reader034.fdocuments.in/reader034/viewer/2022052018/6030ffd2afd506357e6b36c3/html5/thumbnails/64.jpg)
A. a or d B. a or c C. b or d D. b or c E. any of a, b, c or d
Which magnet or magnets produced this induced magnetic dipole?