Question

Why it is necessary to apply a potential difference across the ends of the conductors to have an electric current through it?

Answer 1

-Potential difference is the work done to move a certain amount of charge in a conductor.

-In a normal conductor, there are electrons moving about but in random directions.

-But when you add a potential difference, the electrons orient themselves towards a place with lower potential difference.

-It is like how water molecules moves in a vessel, but when it is kept at a height and the vessel is tilted, the water moves downwards.

Answer 2

Answer:

There is a difference in no of electrons in a simple area. that's why it's necessary to have potential difference between the two ends.

Explanation:

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