1. A current carrying loop is placed in a uniform magnetic field. The torque acting on it does not depend upon ?

magnetic field

value of the current

shape of the loop

area of the loop

Answer: shape of the loop

Explanation:


2. The magnetic field around a long straight current carrying wire is ?

unsymmetrical

spherical symmetry

cylindrical symmetry

cubical symmetry

Answer: cylindrical symmetry

Explanation: