Advertisements
Advertisements
Question
State the energy change in the following device while in use:
A loudspeaker
Advertisements
Solution
Electric energy to sound.
RELATED QUESTIONS
Write true or false of the following statement.
There is always some loss of energy in conversion from one form of energy to another form, so the total energy is not conserved.
Define the term kinetic energy. Give one example of a body which possesses kinetic energy.
Give one relevant example for the following transformation of energy :
Electrical energy to light energy.
State the energy changes in the following case while in use:
an electric cell in a circuit
Obtain an expression for the potential energy of a body of mass m at a height h above the ground.
Give one example when:
Chemical energy changes to light energy.
Match the pairs.
| Group 'A' | Group 'B' | ||
| (1) | Rolling object | (a) | Heat energy |
| (2) | Food | (b) | Atomic energy |
| (3) | Stretched bow | (c) | Kinetic energy |
| (4) | Sunlight | (d) | Potential energy |
| (5) | Uranium |
(e)
|
Chemical energy
|
What is meant by energy?
Energy from various sources is considered to have been derived from the sun. Do you agree? Justify your answer.
Name the type of energy (kinetic energy K or potential energy U) possessed in the following case:
A moving bus
