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What is the correct expression for power?(a) P = dW/dt(b) P = F * d(c) P = E(d) P = dE/dtI got this question during an online exam.The query is from Introduction to Work, Energy and Power topic in chapter Work, Energy and Power of Physics – Class 11

Answer»

Right answer is (a) P = dW/dt

Best explanation: Power is DEFINED as the rate of change of work. Hence, P = dW/dt. INSTANTANEOUS power = FORCE x instantaneous SPEED. Average power = total work / total TIME.



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