Case : Read the passage and answer the question(s). A force on a charge in electric and magnetic field is given as : F = qE + qvB where,  E : Electric field B : Magnetic field q : Charge v : Velocity of the charge Based on this information, answer the question that follows.

What happens if the electric field is turned off and the charge is at rest?

Force acting is infinite. Force acting is zero. Force acting is the same. Force acting will depend upon the magnitude of the charge.

Force acting is zero.

As E, B = 0; F = 0.