A machine does a work of $1960 J$ in $24 s$ . The power of the machine is:

$98 W$

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$81.6 W$

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$49 W$

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$87.6 W$

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Solution

The correct option is B
$81.6 W$

Step 1: Given
Work done $=$ $1960 J$
Time taken $= 24 s e c o n d$
Step 2: Calculating power by applying formula:
The power is given as,
$P o w e r (P) = \frac{W o r k d o n e (W)}{T i m e t a k e n (t)}$
$P = \frac{1960 J}{24 s} = 81.66 W$
Hence, the correct answer is option (B) i.e. $81.66 W$

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