Work Energy And Power Question 181

Question: 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 [EAMCET 1984]

Options:

A) 20

B) 200

C) 2

D) 10

Show Answer

Answer:

Correct Answer: A

Solution:

P = Fv $ =F\times \frac{s}{t}=40\times \frac{30}{60}=20W $



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