Electricity and Magnetism

This study guide is intended to help you complete notes and revision for the Electricity and Magnetism section of GCSE.

Click on the following links to visit the BBC Bitesize revision Website for:

Ohm’s Law:

1. Read through the revision notes and answer the following questions. Finally, carry out the revision test on Ohm’s Law.

(a) State Ohms’s Law in words and sketch a graph to explain the law.

(b) Write down an equation which describes Ohm’s Law.

(c) List three components with their electrical symbols that do NOT obey Ohm’s Law and explain why they do not obey the law.

Mains Electricity:

2. Read through the revision notes and answer the following questions. Finally, carry out the revision test on Mains Electricity.

(a) Draw a sketch diagram of the wires in a plug. Label the diagram (don’t forget to relate colour to function)

(b) What size fuse would you use for a device using a current of 2A ?

(c) What is the function of the Earth wire