Fig. 9.1 illustrates a circuit fitted with a 3-position switch. The switch’s moving contact is permanently joined to point Y, which serves as the pivot. The opposite end of the moving contact, labelled X, may be linked to point A, B or C.
(a(i))[1]
Determine the current in the motor when the switch is connected to point A.
(a(ii))[2]
Determine the current in the motor when the switch is connected to point B.
(a(iii))[2]
Determine the current in the motor when the switch is connected to point C.
(b)[3]
Calculate the combined resistance for this arrangement.
Worked solution & mark scheme
This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The current is 0 A” …