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Power MCQ - Practice Questions with Answers
Edited By admin | Updated on Sep 25, 2023 25:23 PM | #NEET
Quick Facts
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Power is considered one of the most asked concept.
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31 Questions around this concept.
Solve by difficulty
A body of mass m accelerates uniformly from rest to V in time T The instantaneous power delivered to the body as a function of time is given by :
A body of mass m accelerates uniformly from rest to in time
The instantaneous power delivered to the body as a function of time t is :
A body is moved along a straight line by a machine delivering constant power. The distance moved by the body in time t is proportional to:
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Concepts Covered - 1
Power
1. Definition-
Power is defined as the rate at which work is done or energy is transferred.
2. Dimension -
2. Units-
- SI- Watt or Joule/sec
- CGS-Erg/sec
4. Average power-
5. Instantaneous power-
Where,
i.e. power is equal to the scalar product of force with velocityÍ
6. Power is expressed as the rate of change of kinetic Energy
Where,
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