Capacitor Questions

Q3. In the circuit below the capacitor is charged to a potential difference of 6.0 V.

When the switch is moved from A to B , the capacitor discharges through the resistor.

a)   Show that the initial value of the discharge current is about 1 mA.

(2 Marks)

b)   The time constant RC of the discharge circuit is about 26s.

Calculate the current in the discharge circuit after the switch has been closed for a time equal to RC.

(2 Marks)

(Total 4 marks)