MHT CET202527 Apr 2025Evening ShiftPhysicsElectromagnetic InductionActual
Two identical coaxial circular loops carry current 'i' each circulating in the clockwise direction. If the loops are approaching each other, then
Options
- Acurrent in each loop increases.
- Bcurrent in each loop remain the same.
- Ccurrent in each loop decreases.
- Dcurrent in one loop increases and in the other it decreases.
Correct answer
A. current in each loop increases.
Step-by-step solution
The magnetic flux through each coaxial circular loop increases as they approach each other. For each loop, the induced current opposes this increasing flux. The original clockwise current produces a magnetic field directed into the plane. To oppose the flux increase, the induced current must generate a field directed out of the plane, requiring an anticlockwise current direction. Since the induced current opposes the original current, the net current in each loop decreases. The current in each loop i therefore decr