It is said that the power of human heart is typically $10 W$ for a $70 k g$ adult. In one year time, the total energy required, expressed in $k W h$ will be approximately:

8.76 k W h

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87.6 k W h

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876 k W h

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0.876 k W h

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Solution

The correct option is C $87.6 k W h$
$P = \frac{E n e r g y r e q u i r e d}{t i m e}$
$\Rightarrow E n e r g y = P \times t i m e$
$= 10 \times 365 \times 24$
$= 87.6 k W h$

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