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Dependence on Area and Orientation

A wire of irr...

Question

A wire of irregular closed shape is turned into a circular shape as shown in the figure. Determine the direction of flow of induced current in the loop if the magnetic field is constant.

A

Clockwise

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B

Anticlockwise

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C

First clockwise then anticlockwise

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D

No current will be induced

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Solution

The correct option is A Clockwise

Since, the area of the loop is increasing with time, the flux through it will also increase.

According to the Lenz’s law, the current induced will be such that it will oppose the increase in flux.

As outward flux is increasing, therefore, induced current will develop inward flux.

Hence, induced current will be clockwise.

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Dependence on Area and Orientation

Standard XII Physics

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