JEE MAIN - Physics (2021 - 18th March Morning Shift - No. 14)
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.
Loop assumes circular shape with its plane normal to the field.
Loop assumes circular shape with its plane parallel to the field.
Wire gets stretched to become straight.
Shape of the loop remains unchanged.
Explication
Force on each wire be along radially outward and equal so, it will take the shape of circle and
parallel to the field.