First slide

Magnetic flux and induced emf

Question

Two identical coaxial circular loops carry current i each circulating in the clockwise direction. If the loops are approaching each other, then

Moderate

A

Current in each loop increases
B

Current in each loop remains the same
C

Current in each loop decreases
D

Current in one-loop increases and in the other it decreases

Solution

According to Lenz's Law, when the two loops approach each other, the induced current will be in anti-clockwise direction. Therefore, the net current in both the loops would decrease.

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