| Good conductors of electricity | Bad conductors of electricity |
|---|---|
| They allow electricity to pass through it | They do not allow electricity to pass through it |
| Metals are generally good conductors | Non- Metals are generally bad conductors |
| Eg: copper, aluminium | Eg: rubber, wood |
What do you mean by heating effect of current?
Updated 1/12/2026
Why materials classified as poor conductors, also allow electricity to pass under certain conditions?
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What are the various types of friction? Explain.
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Is it possible for an electric tester to detect weak current also, if no how can we detect weak current flowing in a circuit?
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Give some examples of smooth and rough surfaces.
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