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Study and applications of electricity, electronics, and electromagnetism. Use this tag when someone who has trained as an electrical engineer is likely to be able to answer your question.

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Why doesn't my wire follow ohm's law?

I have a 60mm length of wire with diameter of 0.5mm. Meaning it should have a resistance of 0.005 ohm. I put a constant voltage of 0.3volt through it, but it's only taking 7amp, but according to ohm' …
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