V2+Test+FyANVC08+Ch+16 19+Electricity+G Level

8/3/2019 V2+Test+FyANVC08+Ch+16 19+Electricity+G Level

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Test Ch6FyANVC08 Test Ch 16-19 Electricity NV-College

Directions Please Write your name on all of the papers on your table, NOW!

Test time 14:00-15:20 November 4, 2009

Resources Calculators, and Formulas for the National Test in Mathematics Courses A &

B, and the formula sheet for Physics A, FYANV-College. You may also useyour personalized blue-booklet. The booklet must have your name and no

calculations or solution to any problem are supposed to be on it.

The test: The test is a G-level test and consists of a total of 25 questions. Most of

problems are multiple-choice. Answer all of questions. Below each problem

some space is provided. You are required to show your calculations.

The VG-MVG-level test is given on Friday November 9, 2009.

Score The maximum score is 53 points.

Mark levels The maximum number of points you can receive for each solution is indicated

after each problem.

G: 27 points

VG: -

MVG: -

Have Fun

Behzad

Only the marked problems in the box below will be graded.

Electrostatics:ES DC DC DC DC DC DC ES ES ES Ch 16-19

1 2 3 4 5 6 7 8 9 10 11 12 13 Total Minimum G

2 2 2 2 3 2 3 3 2 2 1 2 2 28

14 15 16 17 18 19 20 21 22 23 24 25 53 27

2 2 2 2 2 2 3 1 2 3 2 2 25

ES ES ES ES DC DC DC ES ES ES ES DC ELECTRICITY

[email protected] for sale.Free to use for educational purposes. 1/13


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Base your answers to the problems 1-4 on the figure below which illustrates two point

charges Q

Base your answers to the problems 1-4 on the figure below which illustrates two point

charges Q CC0.51 = and CQ 0.52 = . The charges are pinned to the page of the paper,

and therefore are stationary.

1. At which point the magnitude of the electric field is zero? [1]a. A b. B c. Cd. D e. None

Why? Explain. [1] Answer: Alternative:_______________

2. At which point the electric potential is zero? [1]a. A b. B c. Cd. D e. None


A

B C DCQ 0.51 = CQ 0.52 =

cm0.5 cm0.5


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3. If a unit positive charge move from the point D to the point B , the potential energyof the charge [2]

a. decreasesb. first decreases, then increasesc. increasesd. first increases, then decreasese. remains constant through out the journey.

Answer: Alternative:_______________

4. Moving CQ 0.51 = and CQ 0.52 = closer to each other would cause theirelectric potential energy to [1]

a. increaseb. decreasec. first increases, then decreased. first decreases, then increasee. remains constant through out the journey.Why? Explain. [1] Answer: Alternative:_______________


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9. The power and voltage on the light bulb read 100 W 240V. How many amperes willfollow through the light bulb if it is connected to

V220 ? [1]

a. A22 b. A.1 8c. A45.0 d. A.2 5e. mA55. 0

Why? Show your calculations below. [1] Answer: Alternative:_______________

10.At kwhkr/ , what does it cost to use a W hair dryer for min60 ? [1]9.0 2000a. kr9.0 b. kr8.1 c. kr4.5 d. kr6 e. kr7.2

Why? Show your calculations below.[1] Answer: Alternative:_______________


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11.What is the approximate electrostatic force between the electron and proton of aHydrogen atom? We may assume the average distance of the electron from the

nucleus of hydrogen atom is m1010 . [1/0]

11.What is the approximate electrostatic force between the electron and proton of aHydrogen atom? We may assume the average distance of the electron from the

nucleus of hydrogen atom is m1010 . [1/0]53.0 53.0

a.a. N8102.8 attractive.b. N8102.8 repulsive.c. N8102.8 attractive.d. N8102.8 repulsive.


12.Two identical metallic sphere carry charges mCQ 0.101 = and mC0.6 . Thespheres are brought together, and then separated. The final charge on each sphere will

be: [1]

Q2 =

a. mC0. 16b. mC.6 0c. mC.4 0d. mC.2 0e. .0 0


13.Both the Van de Graff generator and the lady in the picture are charged. Why does herhair stands out? Explain. [2/0]


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14.When you bring a charged insulator rod close to a thin stream of tap water. The streamof water is affected by the charged rod. Why? Explain. [2/0]

14.When you bring a charged insulator rod close to a thin stream of tap water. The streamof water is affected by the charged rod. Why? Explain. [2/0]

15.Two charged Ping-Pong balls separated by a distance of m00.2 exert an electricforce of mN00 on each other. What will be the force if the Ping-Pong balls are

moved away from each other, to a separation of cm0.4 from each other? [1]

15.Two charged Ping-Pong balls separated by a distance of m00.2 exert an electricforce of mN00 on each other. What will be the force if the Ping-Pong balls are

moved away from each other, to a separation of cm0.4 from each other? [1]

.10

a. mN50. .a. mN50. .2b. mN00. .b. mN00. .40c. mN00. .c. mN00. .160d. mN00. .d. mN00. .10

Explain your reasoning: [1] Answer: Alternative:_______________Explain your reasoning: [1] Answer: Alternative:_______________

16.How much work is required to move a single electron through a potential difference of16.How much work is required to move a single electron through a potential difference of

.10

2

40

160

10

kV0.1 ? [1/0]

a. J19106.1 .b. J16106.1 .c. J9109 .d. J3100.1 .



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19.The diagram below represents currents in a segment of an electric circuit. What is thereading of the ammeter

19.The diagram below represents currents in a segment of an electric circuit. What is thereading of the ammeter A ? [1/0]

a. mA1 .b. mA2 .c. mA3 .d. mA4 e. mA6

Why? Show your calculations below. [1]

mA5

mA3

mA2

mA7

A

mA1

mA4

20.A negative charge CQ 0.5 and a positive charge C1 = Q 0.52 += are placed on aplane surface as illustrated in the figure below. A positive point charge is placed at the

point P. The distance between 1PQ is exactly equal to the distance 2PQ .

What is the direction of the resultant force on the point charge P? Explain [1]

a. Towards a. ab

c

de

f

g

h

P Q1

Q2

b.

Towards b.c. Towards c.d. Towards d.e. Towards e.f. Towards f.g. Towards g.h. Towards h.




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Base your answers to the problems 20-23 on the figure below which illustrates an electron

projected into the region between two parallel charged plates which are apart. The

electric field between the plates is

mm0.2

C

MNE 0.2=

mm0.2

21.In which direction will be deflected? [1/0]a. Toward the top of the page.b. Toward the bottom of the page.c. Into the paged. Out of the page.e. It is not going to be deflected.


22.The force experienced by the electron during the time it is moving between the plates is:a. N19 Downward toward the bottom of the page. [1]102.3 b.

N

13

Toward the top of the page.102.3

c. N19 Toward the top of the page.102.3 d. N13 Downward toward the bottom of the page.102.3 e. The electron is not going to be deflected. Therefore, the total force on the electron

is zero.




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23.The electron is replaced by a proton. Compared to the magnitude of the force on theelectron, the magnitude of the force on the proton will be [1]

a. the same.b. greater.c. less.


24.The potential difference across the two plates is: [1/0]a. MVV 0.4=b. kV.V 0.4=c. kV .V 0.1=d. VV 0.4=e. mVV 0.4=




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25.The power and voltage on the light bulb read 100 W 240V. We take it to the USAwhere the electricity used in a common house is V110 . When it is connected to the

power source [1]

a. the light bulb will burn.b. It will work normally as a W100 light bulb.c. It will work as a W25 light bulb.d. It will work as a W400 light bulb.e. It will not work at all.



V2+Test+FyANVC08+Ch+16 19+Electricity+G Level

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