conceptual questions solutions: 3
TRANSCRIPT
Conceptual questions solutions:
3. when the battery is disconnected the charge on the capacitor still remains the same. Lets assume it is q.
Hence the energy stored in the capacitor is given by q2/2c, where c is the capacitance. The capacitance is
further given by €A/d, where d is the plate separation. If d is increased the capacitance goes down which
means the energy stored in the capacitor increases.
5. Stay inside the car. Since the car is a colsed conductor it still keeps the potential inside zero. Note there
is no electric field inside the conductor. However, if you step out of the car 20kV might exist between
you and the ground.
Solutions to problems:
