A square loop of sides `10 cm` carries a current of `10 A`.A uniform magnetic field of magnitude `0.20 T` exists parallel to one of the side of the loop.(a)What is the force acting on the loop? (b)What is the torque acting on the loop?

Answer

A, B, C, D

Explanation

In uniform magnetic field force acting on closed loop =zero
`tau=MB`
`=il^(2)B`
`=10xx0.1xx0.1xx0.2`
`=2xx10^(-2)N-m`