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Which among the following is an expression for energy?(a) V^2It(b) V^2Rt(c) V^2t/R(d) V^2t^2/RThe question was asked during an online exam.I want to ask this question from Energy in chapter Simple DC Networks of Basic Electrical Engineering

Answer»

The correct OPTION is (c) V^2t/R

Explanation: EXPRESSION for POWER = VI, substituting I from ohm’s law we can write, P=V^2/R. Energy is the PRODUCT of power and time, hence E=Pt = V^2t/R.



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