(a) Name a device that helps to measure the potential difference across a conductor.
(b) how much energy is transferred by a 12 V power supply to each coulomb of charge which it moves around a circuit?

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Solution

(i) Voltmeter Is used To Measure PD ( Voltage ).
(ii) charge Q=1 C
V= 12V
E=Vit
E=12(Q/t)t = 12*Q=12 Joules

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Name a device that helps to maintain a potential difference across a conductor.

Q. Question 1
Name a device that helps to maintain a potential difference across a conductor.

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(a) Name a device that helps to measure the potential difference across a conductor. (b) how much energy is transferred by a 12 V power supply to each coulomb of charge which it moves around a circuit?

(i) Voltmeter Is used To Measure PD ( Voltage ). (ii) charge Q=1 C V= 12V E=Vit E=12*(Q/t)*t = 12*Q=12 Joules

(a) Name a device that helps to measure the potential difference across a conductor.
(b) how much energy is transferred by a 12 V power supply to each coulomb of charge which it moves around a circuit?

(i) Voltmeter Is used To Measure PD ( Voltage ).
(ii) charge Q=1 C
V= 12V
E=Vit
E=12(Q/t)t = 12*Q=12 Joules