The amount of heat produced in a wire depends on its materials (A) Length (B) Thickness (C) Length and thickness (D) None of these

Amount of heat produced in a wire = I2R

Where

R is resistance of wire

I is current through wire

As resistance of wire R ∝ L/A

Hence,

The amount of heat produced in a wire depends on the material, length as well as thickness.

So, the correct option is (C)

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