A positive rod is brought near an initially neutral metal sphere on an insulating stand. The rod does not touch the sphere, and the sphere is not earthed.
Which statement explains why the sphere is attracted to the rod?
Its electrons redistribute; the nearer negative region has a stronger interaction with the rod.
Its electrons leave for Earth; the nearer positive region has a stronger interaction with the rod.
Its protons redistribute; the nearer positive region has a stronger interaction with the rod.
Its protons leave for Earth; the nearer negative region has a stronger interaction with the rod.
80 exam-style questions on Edexcel GCSE Physics 11.2 Uses, dangers and electric fields, covering 11.2.1 Uses of electrostatic charge, 11.2.2 Dangers of sparking, 11.2.3 Electric fields, and 11.2.4 Electric fields and static electricity. Each one has a worked solution and a mark scheme showing where the marks go.