Figure 8.1 shows a device joined to a 240 V mains supply. It gives a potential difference (p.d.) of 12 V across A and B, and a 12 V lamp is placed between A and B. The labels in Fig. 8.1 are: 240 V mains supply, primary coil 8000 turns, secondary coil, 12 V lamp, A, B.
(a(i))[3]
Using the information in Fig. 8.1, Calculate the number of turns on the secondary coil. number of turns = .........................
(a(ii))[1]
State the name of the device illustrated in Fig. 8.1.
(a(iii))[1]
The device has two coils. State the material from which the coils are made.
(b)[3]
Draw on Fig. 8.2 to show the connection of the lamps and the motor between A and B.
Worked solution & mark scheme
This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “400” …