Discharging OF capacitor

Why does galvanometer show a momentary deflection at the time of charging or discharging a capacitor? Write the necessary expression to explain this observation?

R-C Circuit- Important Questions|Discharging Of A Capacitor

The figure shows an experimental plot discharging of a capacitor in an RC circuit. The time constant of this circuit lies between:

A capacitor C is connected to two equal resistances as shown in the figure. Consider the following statemets i. At the time of charging of capacitor time constant of the circuit is 2CR ii. At the time of discharging of the capacitor the time constant of the circuit is CR iii. At the time of discharging of the capacitor the time constant of the circuit is 2CR iv At the time of charging of the capacitor the time constant of the circuit is 2CR

When a charged capacitor is discharged through a resistor, heat is produced in the resistor In charging a capacitor, energy is stored in the capacitor.

Why does current in a steady state not flow in a capacitor connected across a battery? However momentary current does flow during charging or discharging of the capacitor. Explain.