Question

A coil carries a current and experiences a torque due to a magnetic filed. The value of the torque is 80% of the maximum possible torque. The angle between the magnetic field and the normal to the plane of the coil is

• A. ${30}^{\circ }$
• B. ${53}^{\circ }$
• C. ${45}^{\circ }$
• D. ${37}^{\circ }$

Answer 1

The correct option is B ${53}^{\circ }$

T=B I A n (0.8)
$Sin\theta =\frac{4}{5}\theta ={53}^{\circ }$