A metal rod of length L moves with velocity v,perpendicular to its length,in a magnetic field B,which is perpendicular to both the rod and its velocity.If the length of the rod is doubled,what happens to the electric field in the rod?
A) it stays the same
B) it doubles
C) it quadruples
D) it halves
E) it quarters

Question

Quizplus · Accepted Answer

The electric field induced in the rod is given by E = vB, which is independent of the length of the rod. Therefore, doubling the length of the rod does not change the electric field.

A Metal Rod of Length L Moves with Velocity V,perpendicular