Class 10 > Science


Deduce the expression for the electrical energy spent in flow of current through a conductor.


(i) Expression for electrical energy: Consider a conductor through which a current is flowing. Let V be the potential difference across the conductor and ‘t’ be the time during which charge ‘Q’ flows through it. Thus, Energy consumed is electrical power multiplied by time. E = P * t = V/ t ii) Expression for electrical power is given as P=QV/t

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