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Formula for electrical energy 

In the above figure, when the current passe through R, heat is produced across the resistor. By definition V = W / Q W = VQ i.e. W, work is obtained when a charge 'Q' flows between two points maintained at a potential diference of V. Across a conductor this work may appear as heat energy as a result the temperature of the conductor rises. electric current is the rate of flow of charge if current 1 amp, flows for 't' seconds between two poits then the charge (Q = It) flows between those ponits in time 't', then amount of energy obtained by the current during time 't' is W = QV = VIt If a current of I(ampere) is flowing through a resistor R, ohms, whose ends are maintained at potential difference V(volts) then by Ohm's law V = IR Hence W = VIt or W = I2Rt The electrical energy W in the resistor is dissipated as heat energy. 





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