Which one of the following expressions gives the average power when an amount of work…

PHYSICS · Single correct · CBSE · Physics · Work and Energy · Work and Energy

Problem

Which one of the following expressions gives the average power

P_{\text{avg}}

when an amount of work

W

is done in a time interval

t

? (a)

P_{\text{avg}} = \dfrac{W}{2t}

(b)

P_{\text{avg}} = \dfrac{W}{t}

(c)

P_{\text{avg}} = \dfrac{2W}{t}

(d)

P_{\text{avg}} = \dfrac{W}{\sqrt{2}\,t}