The heating effect of electric current depends on:

Material of a conductor

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Quantity of current

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Number of free electrons in a conductor

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None of these

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Solution

The correct options are
A
Material of a conductor

B
Quantity of current

C
Number of free electrons in a conductor

The heating effect depends on the conducting material as it varies material to material. Silver is a good conducting material compared to copper. Apart from this, if more and more current is passed through a conductor, it becomes hot in less time. This heating takes place due to the flow of free electrons i.e. these free electrons play an important role in generating heat due to collision within a conductor. More free electrons means more possibility of collisions within themselves, so more heating.

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The heating effect of electric current works for both conductors as well as insulators.

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