Question

A 140 turn , 2.40 cm diameter coil is at rest in a horizontal plane. A uniform magnetic field 60∘ away from vertical increases linearly from 0.740 T to 1.67 T in 0.660 s . (Ans. 44.6 mV)

please answer parts A and B, each present new conditions for the same coil.

A). If the loops are then re-aligned such that the magnetic field is perpendicular to the plane of the loops (the area vector is parallel with the magnetic field vector) and the magnitude set at a constant magnitude of 1.67 T , but the coil is rotated instead, what angular velocity would be necessary to provide the same EMF as in part a) above?

B). If the loops have the same alignment (the area vector is parallel with the magnetic field vector) and the magnitude set at a constant magnitude of 1.67 T , but the coil is now rotated at 5.20 rad/s , what is the new induced EMF in the coil?

Answer 1