Which of the following methods is suitable for magnetising an unmagnetised steel bar?
Placing the steel bar in an east-west direction and hammering it.
Heating the steel bar to redness and cooling it in an east-west direction.
Placing the steel bar inside a solenoid connected to an alternating current (a.c.) supply and slowly withdrawing it.
Placing the steel bar inside a solenoid connected to a direct current (d.c.) supply and switching the current on.
169 exam-style questions on CIE IGCSE Physics Simple phenomena of magnetism, covering Simple phenomena of magnetism. Each one has a worked solution and a mark scheme showing where the marks go.