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Derive an expression for the heat produced by electric current and state Joule's Law. |
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Answer» Solution :`P= Vxx(Q)/(T)` P =VI `H=Pxxt` `= Vixxt = VIT` H= IRIt [ V = IR , Ohm.s law ] `=I^(2) Rt.` Joule.s Law : When current of l ampere flows in a wire of RESISTANCE R `Omega` for t SECONDS, the heat energy disspated by it is given by `H= I^(2) Rt` |
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