Steel paperclips are picked up by a permanent magnet.
The magnet is removed and the paperclips are placed on a wooden desk.
A plastic pen is rubbed with a woollen cloth and held just above the paperclips.
Some of the paperclips jump and stick to the pen.
Which statement correctly explains this last observation?
The pen has been electrically charged by rubbing with the cloth.
The pen has been magnetised by rubbing with the cloth.
The paperclips have been electrically charged by the magnet.
The paperclips have been magnetised by the magnet.
145 exam-style questions on CIE IGCSE Physics 4.2.1a Positive and negative charge. Each one has a worked solution and a mark scheme showing where the marks go.