deriving equation of heat with potencial difference
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P=w/t ( power= work/time)
= VI / T ( work done when current I operates at potential difference of V )
= IR×I / T ( V = IR :- by ohm's law )
= I^2R / T
energy,E = Power, P × time,T
E= I^2R / T × T = I^2R
therefore , heat energy produced = I^2R
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