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 $
