Answer:
E= vB
Explanation:
If and when the charge on a rod happens to be in equilibrium, then we say that the electric force in conjunction with the magnetic force that is acting on the charge on the rod are both equal and opposite in direction. Mathematically, we say
Fe = Fm, where
Fe = qE and
Fm = qvB
If we substitute and make them equal to one another, we have
qE = qvB, and finally, on simplifying further, we have
E = vB
