Question

Write an expression for the electrical power spent in flow of current through a conductor in terms of resistance and potential difference.
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Answer 1

Answer:

P=RV2asI=RV

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Answer 2

Answer:

If a certain amount of power is dissipated for a given time, then energy is dissipated. Energy (power×time) is measured in Joules and by including time (t) in the power formulae, the energy dissipated by a component or circuit can be calculated.

Energy dissipated = Pt or VI × t as P = VI. When the time factor is ignored, the relationship can be written as  

P = RV ^2  as I = R/V

Hence, the expression for the electrical power spent in flow of current through a conductor in terms of resistance and potential difference is given as P = RV^2