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
The bulb will light up for an instant when the capacitor starts charging
The bulb will light up when the capacitor is fully charged
The bulb will not light up at all
The bulb will light up and go off at regular intervals
As we have learned
Capacitance -
It is ability of conductor to hold the charge.
-
Initially when key is closed, the capacitor acts as short-circuit, so bulb will light up. But finally the capacitor becomes fully charged, so it will act as open circuit, so bulb will not glow.
Option 1)
The bulb will light up for an instant when the capacitor starts charging
Option 2)
The bulb will light up when the capacitor is fully charged
Option 3)
The bulb will not light up at all
Option 4)
The bulb will light up and go off at regular intervals
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