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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
- The electric potential at a point (x,y,z) is given by V = – x²y – xz³ + 4.
- A bar magnet with magnetic moment 2.5×10³ JT⁻¹ is rotating in horizontal plane
- If a charge on the body is 1nC, then how many electrons are present on the body?
- After 300 days, the activity of a radioactive sample is 5000 dps
- A resistance R draws power P when connected to an AC source. If an inductance
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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