A loop of flexible wire of irregular.. |EMF| JEE MAIN 2021

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JEE MAIN 2021

18-03-21 S1

Question

A loop of flexible wire of irregular shape carrying current is placed in an external magnetic field. Identify the effect of the field on the wire.

Select the correct option:

A

Loop assumes circular shape with its plane normal to the field.

B

Loop assumes circular shape with its plane parallel to the field.

C

Wire gets stretched to become straight.

D

Shape of the loop remains unchanged.

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

Every part ( $\mathrm{d} l$ ) of the wire is pulled by force $\mathrm{i}(\mathrm{d} l) \mathrm{B}$ acting perpendicular to current \& magnetic field giving it a shape of circle.

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Physics

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