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Do batteries contain current, which comes out when they are in a circuit?

No; this is a common misconception! Batteries store energy, which is used to push electrons (charges) around a circuit. The flow of electrons is called current. As the electrons flow through the circuit they lose energy, usually because they're doing some electrical work like driving a motor or making a lightbulb light up!

Samuel S. A Level Physics tutor, GCSE Physics tutor, GCSE Chemistry t...

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