Question

A potential V is applied across length L of a conductor. Relate
J with p and E
E with V and L​

Answer 1

Answer:

A potential difference V is applied to a conductor of length L, diameter D. ... (ii) When L is doubled, E becomes half vd becomes half and R becomes double. (iii) When D is doubled, E remains unchanged, vd is also unchanged and R becomes one-fourth.