A small polystyrene bead hangs from a nylon thread and is negatively charged. A positively charged rod is held near the bead without touching it. The rod is then replaced by a negatively charged rod held at the same distance.
Which statement describes the force on the bead from each rod?
The bead is repelled by the first rod and attracted by the second rod.
The bead is repelled by the first rod and repelled by the second rod.
The bead is attracted by the first rod and attracted by the second rod.
The bead is attracted by the first rod and repelled by the second rod.
91 exam-style questions on Edexcel GCSE Physics 11.1 Charging by friction, covering 11.1.1 Charging insulators by friction, 11.1.2 Forces between charges, 11.1.3 Electrostatic phenomena, and 11.1.4 Earthing and removing charge. Each one has a worked solution and a mark scheme showing where the marks go.