EASY
Earn 100

We connect a charge capacitor to an inductor the electric current and charge on the capacitor in the circuit undergoes LC oscillations.
(a)True
(b)False

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Important Questions on Alternating Current
EASY

MEDIUM

EASY
If the instantaneous emf and the instantaneous current equations of an A.C. circuit are respectively.
then the phase difference between voltage and current is :

EASY

HARD

If a student plots graphs of the square of maximum charge on the capacitor with time (t) for two different values and of L then which of the following represents this graph correctly? (plots are schematic and not drawn to scale)

MEDIUM

EASY

MEDIUM

MEDIUM

MEDIUM
At a certain moment, the switch shown in the figure is disconnected. The energy of the oscillations immediately after the switch is disconnected and at time from the time switch is disconnected are, respectively

HARD

HARD

HARD

MEDIUM

EASY

HARD

MEDIUM

MEDIUM


EASY

