NEET Exam > NEET Videos > Physics Class 11 > Short Tricks for Revision: Work, Energy & Power
Short Tricks for Revision: Work, Energy & Power Video Lecture | Physics Class 11 - NEET
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FAQs on Short Tricks for Revision: Work, Energy & Power Video Lecture - Physics Class 11 - NEET
| 1. What is work in physics? |  |
Ans. Work in physics refers to the transfer of energy that occurs when an object is moved against an external force. It is calculated as the product of the force applied on an object and the displacement of the object in the direction of the force.
| 2. How is energy defined in physics? | |
Ans. In physics, energy is defined as the ability to do work or transfer heat. It exists in various forms such as kinetic energy (energy of motion), potential energy (stored energy), thermal energy (heat energy), and many others.
| 3. What is the difference between power and energy? | |
Ans. Power and energy are related but distinct concepts in physics. Energy is the total amount of work done or the capacity to do work, while power is the rate at which work is done or energy is transferred. In simple terms, energy is the "what" and power is the "how fast."
| 4. How is power calculated? | |
Ans. Power is calculated by dividing the amount of work done or energy transferred by the time it took to do the work or transfer the energy. The unit of power is the watt (W), which is equal to one joule (J) of work done per second (s).
| 5. What are some examples of different forms of energy? | |
Ans. There are several forms of energy, including kinetic energy (e.g., a moving car), potential energy (e.g., a stretched spring), thermal energy (e.g., heat from a fire), chemical energy (e.g., energy stored in batteries), and electrical energy (e.g., electricity flowing through a wire), among others.
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Nov 21, 2024 Last updated |
Video Description: Short Tricks for Revision: Work, Energy & Power for NEET 2024 is part of Physics Class 11 preparation.
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