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प्रश्न
How does the heat produced by die passage of current in a metallic wire depend on the current in the wire?
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उत्तर
The heat produced is proportional to the square of current passed in the wire.
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`[ρ_(Cu) = 1.7 xx 10_(Ωm)^-8, ρ_(Al) = 2.7 xx 10^-8 Ωm]`
