(A) When the voltage across its plates is half the voltage from ground to one of its plates
(B) When the current through the capacitor is a 1/root2 time its value
(C) When the supply voltage is equal to the capacitor voltage
(D) Never
Ans: (C) When the supply voltage is equal to the capacitor voltage
Explanation:
When the capacitor voltage is equal to the supply voltage the current stops flowing through the circuit and the charging phase is over.
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