(a)[2]
Explain why a voltage is induced in the coil when the coil is rotated.
(b)[2]
On Fig. 9.2, draw a line from each shaded box to the appropriate circled voltage to show the voltage output for the coil in different positions.
(c(i))[2]
Draw a diagram to show the way the brushes are connected to the coil in a d.c. motor.
(c(ii))[1]
State why forces act on the sides of the coil in a d.c. motor.