A wire loop of irregular shape carrying current is placed in an external magnetic field. If the wire is…
A wire loop of irregular shape carrying current is placed in an external magnetic field. If the wire is flexible, the shape of the loop changes to
helical
circular
straight line
parabolic
Solution
A loop of irregular shape carrying current when placed in an external magnetic field, it assume circular shape with its plane normal to the field in order to maximum magnetic flux link with loop. This is because for a given perimeter circular encloses maximum area than any other shape.