Mae’r testing hon yn edrych ar gylchedau cerrynt union.

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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• Resistors, Filament Lamps and Diodes [FREE] - Including their characteristics

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• Resistors in Parallel [FREE] - Including the equation you need to calculate this

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• LDRs and Thermistors [FREE] - Really useful components that can change their resistance

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

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

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• Building Circuits [FREE] - 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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