This topic includes both circuits which use direct current and mains electricity which is an alternating supply.

Choose your topic:

• Circuit Symbols [FREE] - The symbols you need to remember when drawing and making circuits

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• Electric Current [FREE] - The rate of flow of electrons

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• Potential Difference and Resistance [FREE] - Potential difference is also known as voltage

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• Series and Parallel Circuits - How the potential difference and current vary

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• Resistors in Parallel [FREE] - How to calculate the total resistance of parallel combinations

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• Circuit Examples - Showing how to apply your new knowledge to circuits

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• Building Circuits - Some ideas to help you make sure your electrical circuits always work​

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• Electrical Power - The rate of energy transfer and how we calculate this for circuits

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• Electricity in the Home - How plugs and fuses keep us safe

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• Oscilloscopes - How to read these

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