Question

Q. 6. What does an electric circuit mean? Name a device that helps to maintain a potential difference
across a conductor in a circuit. When do we say that the potential difference across a conductor is 1
volt?
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Answer 1

Answer:

Answer. 1. An Electric Circuit is a path which electrons from a voltage or current source flow. ... A Cell or a Battery or any source of electricity helps to maintain the potential difference across a conductor.

Explanation:

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Answer 2

Answer:

Electric circuit, path for transmitting electric current. An electric circuit includes a device that gives energy to the charged particles constituting the current, such as a battery or a generator; devices that use current, such as lamps, electric motors, or computers; and the connecting wires or transmission lines. A cell and a battery helps in maintaining a potential difference across a conductor.  The potential difference between two points in an electric circuit is 1 volt when, 1 joule of work is done in order to move a positive charge of 1 coulomb from one point to the other point. Voltmeter is used to measure the potential difference across a conductor.

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