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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