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The thermal energy developed in a current carrying resistor is given by U= i(sq)RT and also U= vit. should we say that U is prpoportional to i(sq) or i ? sq= square
The thermal energy developed in a current carrying resistor is given by U= i(sq)RT and also U= vit. should we say that U is prpoportional to i(sq) or i ?
sq= square
We can say that,U is proportional to i2 because resitance(R) of a particular material and time taken can be kept constant.
however,"v" and "i" are proportional to each other and so when "v" changes "i" changes, so it cannot be considered as a constant term
therefore, U is not proportional to i
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