advances in electrical devices

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Batteries can supply electrical energy. The capacity of a battery is measured in amp-hours (the symbol is: Ah).

Rechargeable and non-rechargeable batteries have different advantages and disadvantages. Technology continues to improve, providing us with faster, smaller and more useful electrical devices.

Battery capacity
Types of batteries
Improving technology
Advances in electrical devices - test



[ This page has been adapted from www.bbc.co.uk/schools/gcsebitesize/science ]