Physics 5054 · O Level · Electromagnetic induction
Electromagnetic induction — practice question
Fig. 8.1 illustrates a permanent magnet attached to one end of an unstretched spring and kept stationary just above a solenoid.
The solenoid is linked to a sensitive ammeter.
(a)[1]
State the name of a material used to make permanent magnets.
(b(i))[3]
Explain why a current exists in the solenoid.
(b(ii))[2]
Explain why the upper end of the solenoid becomes an S pole as the magnet moves downwards towards the solenoid.
(c)[2]
Describe the change in the current in the solenoid.
Worked solution & mark scheme
This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “steel” …