Electricity and Magnetism

The aim of this interactive demonstration is to introduce the idea of electrical power by examining a range of electrical...

Classroom Activity 11-14

The diagnostic questions can be used to check pupils' understanding of power.

Diagnostic Questions 11-14

In this activity a solar cell is illuminated with light from a 12 V bulb. The distance from the bulb to the cell is increased...

Classroom Activity 14-16

Going back to the circuit we started with, you can see that the electrical power is calculated by multiplying together the...

Physics Narrative 11-14

It is a very useful exercise for pupils to investigate the power outputs of electrical appliances in and around the home. By...

Teaching Guidance 11-14

Drawing on the previous sections, we have seen that it's possible to develop an energy description of electric circuits at a...

Teaching Guidance 14-16

This episode considers the ways in which the intensity of radiation decreases with distance from the source.

Lesson 16-19