Question 67
In this task, you will test some materials to find out whether they are conductors or insulators.
Work in pairs or groups of three.
You will need (for each group): a battery or cell, a lamp, crocodile clips, wires, a selection of materials to test, such as items found in the classroom.
Safety: Never connect a conductor directly across the terminals of a cell, battery or other power supply without the lamp in the circuit.
Some objects that are made from metal may appear to be insulators in this test.
b Describe how you could show that these metals are actually conductors.
Work in pairs or groups of three.
You will need (for each group): a battery or cell, a lamp, crocodile clips, wires, a selection of materials to test, such as items found in the classroom.
Safety: Never connect a conductor directly across the terminals of a cell, battery or other power supply without the lamp in the circuit.
Some objects that are made from metal may appear to be insulators in this test.
b Describe how you could show that these metals are actually conductors.
