A closed coil is made of a wire of length L and a current i ampere is flowing in it. If the plane of coil is perpendicular to magnetic field B. The force on the coil is
A)zero
B) iBL
C) 2iBL
D)\[[ML{{T}^{-2}}]\]
Correct Answer:
A
Solution :
Closed loop is represented in figure, according to this L=0 Therefore, \[[M{{L}^{-1}}{{T}^{-2}}]\]