ELECTRIC CURRENTS. SIMPLE CIRCUIT What’s providing the energy? What’s “moving” in the...

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ELECTRIC CURRENTS

Transcript of ELECTRIC CURRENTS. SIMPLE CIRCUIT What’s providing the energy? What’s “moving” in the...

Page 1: ELECTRIC CURRENTS. SIMPLE CIRCUIT What’s providing the energy? What’s “moving” in the circuit? What’s causing the movement? e.m.f. = Electromotive Force.

ELECTRIC CURRENTS

Page 2: ELECTRIC CURRENTS. SIMPLE CIRCUIT What’s providing the energy? What’s “moving” in the circuit? What’s causing the movement? e.m.f. = Electromotive Force.

SIMPLE CIRCUITWhat’s providing the energy?

What’s “moving” in the circuit?

What’s causing the movement?

e.m.f. = Electromotive Force

not a force, but the potential difference in volts

Page 3: ELECTRIC CURRENTS. SIMPLE CIRCUIT What’s providing the energy? What’s “moving” in the circuit? What’s causing the movement? e.m.f. = Electromotive Force.

ELECTROMOTIVE FORCE (EMF)

Page 4: ELECTRIC CURRENTS. SIMPLE CIRCUIT What’s providing the energy? What’s “moving” in the circuit? What’s causing the movement? e.m.f. = Electromotive Force.

CIRCUITS

If the potential difference of the light bulb is 12V, what is the potential difference of the source in theory?

What voltage would we measure in a lab?

Internal Resistance is always present!

Page 5: ELECTRIC CURRENTS. SIMPLE CIRCUIT What’s providing the energy? What’s “moving” in the circuit? What’s causing the movement? e.m.f. = Electromotive Force.

RESISTORS

What does it mean for 2 resistors to be connected:

• In Series?• In Parallel?

Do you remember Kirchoff’s Laws?

Page 6: ELECTRIC CURRENTS. SIMPLE CIRCUIT What’s providing the energy? What’s “moving” in the circuit? What’s causing the movement? e.m.f. = Electromotive Force.

KIRCHOFF’S LAWS

CONSERVATION OF ENERGY CONSERVATION OF CHARGE

Page 7: ELECTRIC CURRENTS. SIMPLE CIRCUIT What’s providing the energy? What’s “moving” in the circuit? What’s causing the movement? e.m.f. = Electromotive Force.

OHM’S LAW + KIRCHOFF’S LAWS = EQUIVALENT RESISTANCE IN SERIES

Page 8: ELECTRIC CURRENTS. SIMPLE CIRCUIT What’s providing the energy? What’s “moving” in the circuit? What’s causing the movement? e.m.f. = Electromotive Force.

OHM’S LAW + KIRCHOFF’S LAWS = EQUIVALENT RESISTANCE IN SERIES

Page 9: ELECTRIC CURRENTS. SIMPLE CIRCUIT What’s providing the energy? What’s “moving” in the circuit? What’s causing the movement? e.m.f. = Electromotive Force.

OHM’S LAW + KIRCHOFF’S LAWS = EQUIVALENT RESISTANCE IN PARALLEL

Page 10: ELECTRIC CURRENTS. SIMPLE CIRCUIT What’s providing the energy? What’s “moving” in the circuit? What’s causing the movement? e.m.f. = Electromotive Force.

OHM’S LAW + KIRCHOFF’S LAWS = EQUIVALENT RESISTANCE IN PARALLEL


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