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.

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. (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

Tardigrade Admin · Accepted Answer

Every part (dℓ) of the wire is pulled by force i ( d ℓ) B acting perpendicular to current magnetic field giving it a shape of circle.

Q. 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

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

Q. 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

Every part (dℓ) of the wire is pulled by force i(dℓ)B acting perpendicular to current & magnetic field giving it a shape of circle.

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