Two charged spheres, A and B, repel each other. Sphere A exerts an electrostatic force on sphere B.
Explain how the force exerted by sphere B on sphere A compares with this force, and whether the two forces cancel.
93 exam-style questions on Edexcel GCSE Physics 9.1 Forces and vectors, covering 9.1.1 Interactions and types of force, 9.1.2 Vector and scalar quantities, and 9.1.3 Vector diagrams and free body diagrams. Each one has a worked solution and a mark scheme showing where the marks go.