Which of the following correctly describes a difference between a permanent bar magnet and an electromagnet?
Only the permanent bar magnet has distinct north and south poles.
Only the electromagnet's magnetic field can be easily turned on and off.
Only the permanent bar magnet can attract other magnetic materials such as iron.
Only the electromagnet has magnetic field lines that form closed loops.
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.