An engine does a work of $600 J$ in $1 m i n u t e$ . The power of engine in kilowatts is:

$0.06 k W$

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$0.03 k W$

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$0.01 k W$

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$0.05 k W$

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Solution

The correct option is C
$0.01 k W$

Step 1: Given that:
Work done $=$ $600 J$
Time taken $= 1 m i n u t e = 1 \times 60 s e c o n d = 60 s$
Step 2: Calculating power by applying formula:
$P o w e r (P) = \frac{W o r k d o n e (W)}{T i m e t a k e n (t)}$
$P = \frac{600 J}{60 s} = 10 W \Rightarrow P = 10 W = 0.01 k W [∵ 1 k W = 1000 W]$
Hence, the correct answer is option (C) i.e. $0.01 k W$

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