Question

In the LC circuit, the current 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

Answer 1

Correct option: (b) I is increasing and Q is decreasing

Explanation:

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 (1/2 Li²) gives that I is increasing