(a)[2]
Describe how the student can work out whether tin is an electrical conductor.
(b)[3]
Describe electrical conduction in a metal. Use electrons in your answer.
Physics 0625 · IGCSE · Electric circuits
Electric circuits — practice question
A student examines a selection of materials to find out whether each one is an electrical conductor or an insulator. The student uses the circuit shown in Fig. 9.1.