Physics 9702 · AS & A Level · Electromagnetic induction
Electromagnetic induction — practice question
As shown in Fig. 10.1, coils P and Q are positioned close together.
(a)[2]
The current in coil P is constant. An iron rod is inserted into coil P. Explain why, while the rod is moving, the voltmeter connected to coil Q gives a reading.
(b)[4]
The current in coil P is now varied as shown in Fig. 10.2. On Fig. 10.3, show how the reading of the voltmeter connected to coil Q changes with time for $t = 0$ to $t = t_2$.
Worked solution & mark scheme
This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Iron rod alters flux (density)” …