Assertion: For a current carrying wire loop of `N` turns, placed in a region of a uniform magnetic field B , the torque acting on it is given by `m xx B`.
Reason: Whenever the magnetic moment m is perpendicular to B, then torque on the loop will be zero.
Options:
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false and R is also false.