What is the voltage across a capacitor at the time of switching, that is, when t=0?a)Infinityb)0Vc)Cannot be determinedd)1VCorrect answer is option 'B'. Can you explain this answer?

Question

Answer

Explanation:
When a switch is closed or opened in a circuit containing a capacitor, the voltage across the capacitor at the instant of switching is determined by the initial conditions of the circuit.

Initial Conditions:
Before the switch is closed or opened, the capacitor is assumed to be fully charged or discharged. This means that the voltage across the capacitor is either the maximum voltage or zero voltage, depending on its initial state.

Switching at t=0:
At the instant of switching (t=0), the behavior of the capacitor depends on its initial conditions.

If the capacitor is fully charged before switching, it will try to maintain the voltage across its terminals. Therefore, the voltage across the capacitor at t=0 will be zero. This is because the capacitor resists sudden changes in voltage and will discharge through the circuit.

If the capacitor is initially discharged (voltage=0), it will try to prevent any change in voltage across its terminals. Therefore, the voltage across the capacitor at t=0 will be the maximum voltage. This is because the capacitor will charge up rapidly to its maximum voltage as the circuit seeks to establish equilibrium.

Answer:
In the given question, the voltage across the capacitor at the time of switching (t=0) is 0V. This implies that the capacitor is either fully charged or discharged before the switch is closed or opened.

Answer

It's not a good question, the correct value could have been 'previous voltage'
but since that option is not given it assumed to be initially discharged.hence voltage across it will be zero

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