NEET | 2016Current Electricity and Electrical InstrumentHard
Question
A small signal voltage V(t) = V0 sin t is applied across an ideal capacitor C:
Options
A.
Current I(t), legs voltage V(t) by 90o
B.
Over a full cycle the capacitor C does not consume any energy from the voltage source
C.
Current I(t) is in phase with voltage V(t).
D.
Current I(t) leads voltage V(t) by 180o
Solution
In capacitor current leads the voltage. Average power dissipated in capacitor is zero
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