Question
Question: A light bulb, a capacitor and a battery are connected together as shown here, with switch S initiall...
A light bulb, a capacitor and a battery are connected together as shown here, with switch S initially open. When the switch S is closed, which one of the following is true
A
The bulb will light up for an instant when the capacitor starts charging
B
The bulb will light up when the capacitor is fully charged
C
The bulb will not light up at all
D
The bulb will light up and go off at regular intervals
Answer
The bulb will light up for an instant when the capacitor starts charging
Explanation
Solution
Current through the circuit can flow only for the small time of charging, once capacitor get’s charged it blocks the current through the circuit and bulb will go off.