Question

Two circular, similar, coaxial loops carry equal currents in the same direction. If the loops are brought nearer, what will happen?
A. P increases while in Q decreases
B. Q increases while in P decreases
C. both P and Q increases
D. both P and Q decreases

Answer 1

Correct Answer - D
When the coils P and Q are brought nearer, the magnetic flux linked with each coil will increase and so the induced current will try to decrease the flux and hence current in both P and Q decreases.