The expression for torque is given by, τ=mB‌sin‌θ Calculate the value of m as, τ‌‌=mB‌sin‌θ 0.016Nm‌‌=m(0.04T)‌sin‌30∘ m‌‌=(‌
2×0.016
0.04
)Am2 ‌‌=0.8Am2 The expression for magnetic moment of solenoid is given by, m‌‌=NIA I‌‌=‌