Question

The current carrying loop is placed in a uniform magnetic field the torque acting on it does not depend upon

Answer 1

Answer:

• Let us assume a loop is placed in the magnetic field and the loop carries current.
• The magnetic field is parallel to the two sides of the loop.
• That is assumed the height of  loop is 'b' and width is 'a' and current is 'I'. The force on both left and right side of the loop will be same F = IbB  

                               Torque will be IabB {ab = A area}

• Change both the forces acting on opposite directions there is no net force when parallel and when the loop is perpendicular there is no talk hence the overall torque will have no effect.