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An electrical tester is tool used to check if a wire is producing an electrical current. Usually you will just hold it to the end of a wire, if an electrical current is being "induced" a light will glow on the tester, this is a live wire.

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12y ago
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12y ago

An electric tester is used to test the conduction of electricity through 2 liquids.

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Q: How do electrical testers work?
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