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Edu Level: CSEC,NCSE
Energy Forms Various Energy Types - Potential Energy and Kinetic Energy Renewable and Non-renewable Renewable Energy - Energy derived from an inexhaustible source
Non-renewable Energy - Energy acquired from a finite source
Comparison: Renewable vs. Non-renewable Renewable Non-renewable Potential Energy
Potential Energy refers to the energy possessed by an object based on its position in a field or its state
Potential Energy based on position in a field
Potential Energy is present within the gravitational field of a stationary object A stationary charge holds potential energy within an electric field A fixed magnet possesses potential energy within a magnetic field Potential Energy related to the object's condition
A coiled spring stores potential energy as a result of its compressed state A stretched rubber band contains potential energy due to its elongated state Kinetic Energy
Kinetic Energy is the energy possessed by an object due to its movement
Work
What is work?
Work is said to be done whenever the point of application of a force moves.
The work done by the force is equal to the product of the force & the displacement of force.
The work done by the force is equal to the product of the force & distance moved by the force in the direction of the force. WORK AND ENERGY ARE SCALAR QUANTITIES.
Unit : Joule (J)
Work done = Force x Distance
The Principle of conservation of energy
The principle states that energy is neither created nor destroyed but it is converted from 1 form to another.
All potential energy converted to kinetic energy
Power
the rate of change of energy with respect to time
Power is a scalar quantity
Power (P) = Energy(E)/time (t)
Watt (W) = Joule (J)/Seconds (s)
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