question_answer

In the LC circuit, the current is in the direction shown and the charges on the capacitor plates have the signs shown. At this time,     

A) I is increasing and Q is increasing

B) I is increasing and Q is decreasing

C) I is decreasing and Q is increasing

D) I is decreasing and Q is decreasing

Correct Answer: B

Solution :

[b] As it can be easily seen by the direction of I that Q is decreasing thus, energy of capacitor is decreasing and hence, energy of inductance is increasing or\[\left( \frac{1}{2}\,L{{I}^{2}} \right)\]gives that I is increasing.