Question: 5: Given below are two statements :
Statement-I :
In an ac circuit, the current through a capacitor leads the voltage across it.
Statement-II :
In a.c. circuits containing pure capacitance only, the phase difference between the current and the voltage is \pi :-
In the light of the above statements, choose the most appropriate answer from the options given below:
(1) Both statement-I and statement-II are correct
(2) Both statement-I and Statement-II are incorrect
(3) Statement-I is correct but Statement-II is incorrect
(4) Statement-I is incorrect but Statement-II is correct
Answer: Option (3)
Explanation:
In an a.c. circuit containing a capacitor, the current leads the voltage by a phase angle of \frac{\pi}{2}.
This means that the current reaches its maximum value earlier than the voltage. Hence, Statement-I is correct.
For a pure capacitive a.c. circuit, the phase difference between current and voltage is not \pi, but \frac{\pi}{2}.
A phase difference of \pi would mean that current and voltage are exactly opposite in phase, which is not true for a capacitor.
Therefore, Statement-II is incorrect, and the correct answer is Option (3).