Question

An insulator plate is passed between the plates of a capacitor. Then, current:

• A. First flown from A to B and then from B to A
• B. First flown from B to A and then from AtoB
• C. Always flows form B to A
• D. Always flows from A to B

Answer 1

Answer: (B)

As insulator plate is passed between the plates of the capacitor, its capacity increases first and then decreases as the plate slips out. As a result, positive charge on plate A increases first and then decreases, hence current in outer circuit flows form B to A and then form A to B