Question

In shown fig, the circular loop of wire is moved with velocity towards the infinite current carrying wire. Then

• A. no current is induced in loop
• B. current is induced in loop clockwise
• C. current is induced in loop anticlockwise
• D. extra charges are induced on the wire loop

Answer 1

Answer: (B)

current is induced in loop clockwise

Answer 2

Mganetic field at the centre of the circular loop increases as it moves towards the current carrying wire as we know it varies inversely with the distance. Therefore, induced current in the loop should be such that it can reduce the increased magnetic field. This is possible only when the induced current is clockwise.