An outer metal ring surrounds an inner metal ring, as shown in the figure. The c

Question

An outer metal ring surrounds an inner metal ring, as shown in the figure. The current in the outer ring is counter clockwise and decreasing. What is the direction of the induced current in the inner ring? Clockwise counter wise There is no induced current in the inner ring. A rectangular coil, with corners labeled ABCD, has length L and width w. It is placed between the poles of a magnet, as shown in the figure If there is a current I flowing through this coil in the direction shown, what is the direction of the force acting on section BC of this coil? Perpendicular to and into the page in the opposite direction of the magnetic field perpendicular to and out of the page in the direction of the magnetic field The force is zero.

Explanation / Answer

Answere 16)

The current induced in the inner ring is also in Counterclockwise Direction. This occurs because according to LENZ Law

The direction of any magnetic induction effect is such as to oppose the cause of the effect .

(b) The Force is ZERO. Because in this, the magnetic field is in the direction of the current.

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