As the student turns the handle of an alternating current (a.c.) generator, the coil spins. Fig. 8.1 shows the layout of the a.c. generator. The diagram labels the handle, coil, slip rings, brush, voltage output, and magnetic poles N and S.
(a(i))[3]
Explain why turning the coil gives an output voltage.
(a(ii))[2]
State the orientation of the rotating coil when the alternating output voltage reaches its maximum value and explain why the maximum output is obtained at this point.
(b)[3]
Explain why a larger force is required to keep the lamp lit.
Worked solution & mark scheme
This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “A magnetic field is referred to” …