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

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Solution

A source of electricity such as cell, battery, power supply, etc. helps to maintain a potential difference across a conductor.

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

Q. Device which helps in maintaining a potential difference across a conductor is

(a) Name a device which helps to maintain potential difference across a conductor (say, a bulb).
(b) If a potential difference of 10 V causes a current of 2 A to flow for 1 minute, how much energy is transferred?

Q. What does an electric circuit mean? Name a device that help to maintain a potential difference across a conductor in a circuit. When do we say that the potential difference across a conductor 1 volt ? Calculate the amount of work done in shifting a charge of 2 couloms from a point A and B having potential 10 V and 5 V respectively.

(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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