Question

Electrons are made to flow in a wire when there is

Answer 1

Answer:

The answer is C.

Explanation:

Answer 2

Answer:

C) a potential difference across its ends.

Explanation:

We know , according to Ohm's law, at a constant temperature, current flows through a circuit is directly proportional to the voltage applied.

                   $V=I\times R$    Here R is resistance provide by circuit.

                   $I=\dfrac{V}{R}.$

Also, currents flows in the opposite direction of electrons. If current flows then only electron flows.

From Ohm's law , current flows only when their is a potential difference.

Therefore, same goes with electrons as they flow only when current flows electrons.

C) Option is correct.