Electricity and Magnetism

Demonstration: the spark through the air from a discharging Van de Graaff is bluish in colour, just like a more powerful...

Practical Activity 14-16

Demonstration: a slice of germanium conducts when heated.

Practical Activity 14-16

Demonstration: these two materials show contrasting effects when heated.

Practical Activity 14-16

Class practical: the conductivity of a wire decreases as it is heated.

Practical Activity 14-16

The electrical conductivity of a material is an intrinsic, bulk property that, together with the spatial dimensions and shape...

Glossary Definition 16-19