Q.

An electric motor exerts a force of 40 N on a cable and pulls it by a distance of 30 m in one minute. The power supplied by the motor (in Watts)  is

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a

20

b

200

c

2

d

10

answer is A.

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Detailed Solution

P=Fv=F×st=40×3060=20W
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How to Join IIT after 10th
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An electric motor exerts a force of 40 N on a cable and pulls it by a distance of 30 m in one minute. The power supplied by the motor (in Watts)  is