Electro Magnetic Induction And Alternating Currents Question 198

Question: 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,

Options:

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

Show Answer

Answer:

Correct Answer: B

Solution:

  • 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 $ ( \frac{1}{2},LI^{2} ) $ gives that I is increasing.


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