Find out the expression for the electrical energy supplied by the source in the current for the time t in the conductor of potential difference V and draw the diagram.
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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=
R
V
2
asI=
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=
R
V
2
.
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