Question

The direction of current in the smaller circuit is

• A. clockwise
• B. anticlockwise
• C. always changes with time
• D. cannot be calculated
• E. answer required

Answer 1

Answer: (B)

The current in the nearest wire to loop has an exponentially decreasing current due to capacitor. The magnetic field in the loop, hence, decreases.

According to lenz law, The direction of current induced in a conductor by a changing magnetic field due to Faraday's law of induction will be such that it will create a field that opposes the change that produced it .

To oppose the decreasing magnetic field the induced current will be anti-clockwise