Question

A conducting wire frame is placed in a magnetic field which is directed in to the paper. The magnetic field increasing at a constant rate. The directions of induced current in wires AB and CD are:

• A. B to A and D to C
• B. A to B and C to D
• C. A to B and D to C
• D. B to A and C to D

Answer 1

The correct option is A B to A and D to C

$Solution:$ Inward magnetic field (')

increasing. Therefore, induced

current in both the loops should be

anticlockwise. But as the area of

loop on right side is more, induced

emf in this will be more compared

to the left side loop

$(e=-\frac{d\phi }{dt}=-A.\frac{dB}{dt})$

Therefore net current in the

complete loop will be in a direction

shown above.

$So,the$ $correct$ $option:A$