A plastic comb can be charged by rubbing it with a cloth.
A metal spoon held in the hand cannot be charged in this way.
Which statement explains this difference?
Electrons can move through plastic, but cannot move through the metal or the hand
Electrons cannot move through plastic, but can move through the metal and the hand
Plastic contains electrons, but metals contain only positive charges that cannot move
Plastic gains protons when rubbed, but metals have no protons that can be moved
43 exam-style questions on OCR GCSE Physics 3.1 Static and charge, covering 3.1.1 Positive and negative charge, 3.1.2 Static electricity and forces between charged objects, 3.1.3 Electron transfer and static electricity, 3.1.4 Electric fields, 3.1.5 Current as a flow of charge, 3.1.6 Current in a single closed loop, and 3.1.7 Charge, current and time. Each one has a worked solution and a mark scheme showing where the marks go.