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A force of 10N is applied on a body for 3 sec and the corresponding displacement 6 m. The power of the source is
Options
(a) 20 W
(b) 25 W
(c) 40 W
(d) 50 W
Correct Answer:
20 W
Explanation:
Velocity, v = displacement / time = 6/3 = 2 m/s
.·. Power, P = Fv = 10 × 2 = 20 W
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Topics: Work Energy and Power
(94)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In Young’s experiment, the third bright band for light of wavelength 6000Å
- An electron of mass Mₑ, initially at rest, moves through a certain distance in a uniform
- The electric resistance of a certain wire of iron is R. If its length and radius
- A small signal voltage V(t)=V₀ sin ωt is applied across an ideal capacitor C
- A body rolls down a stair case of 5 steps. Each step has height 0.1 m and width 0.1m
Topics: Work Energy and Power (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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