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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
- A ball rolls off the top of stair way with a horizontal velocity of magnitude 1.8 m/s
- A capacitor of 2.5 μF is charged through a resistor of 4 MΩ. In how much time
- The slope of the graph showing the variation of potential difference V on X-axis
- For a transformer, the turns ratio is 3 and its efficiency is 0.75. The current flowing
- Electrical force is acting between two charges kept in vacuum. A copper plate
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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