A coil of wire is connected to a sensitive galvanometer. A rod is pulled out from inside the coil. The galvanometer shows a small electric current in the circuit while the rod is moving.
Which rod is being pulled out?
a heated brass rod
a magnetized steel rod
an uncharged rubber rod
a radioactive cobalt rod
35 exam-style questions on CIE IGCSE Physics 4.5.1a Electromagnetic induction. Each one has a worked solution and a mark scheme showing where the marks go.