EASY
Earn 100

Explain the energy conversion happening during charging and discharging of a battery.

Important Questions on Energy: Forms and Sources

EASY
Science>Physics>Energy: Forms and Sources>Transformations and Transfer of Energy
Describe in your words the law of conservation of energy.
HARD
Science>Physics>Energy: Forms and Sources>Transformations and Transfer of Energy
Name the device that converts electrical energy into mechanical energy. Draw its diagram and label the parts.
MEDIUM
Science>Physics>Energy: Forms and Sources>Transformations and Transfer of Energy

Name a machine that converts electrical energy into mechanical energy.

EASY
Science>Physics>Energy: Forms and Sources>Transformations and Transfer of Energy
State the energy changes in the case of an electric iron while in use.
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Science>Physics>Energy: Forms and Sources>Transformations and Transfer of Energy
The temperature of the water at the bottom of a water fall is higher than that of the water at the top, because :
EASY
Science>Physics>Energy: Forms and Sources>Transformations and Transfer of Energy
An electric motor converts:
EASY
Science>Physics>Energy: Forms and Sources>Transformations and Transfer of Energy
Which device is used to convert mechanical energy into electrical energy? Draw a neat diagram and label the parts of this device.
EASY
Science>Physics>Energy: Forms and Sources>Transformations and Transfer of Energy
State the energy changes in the case of a ceiling fan while in use.
EASY
Science>Physics>Energy: Forms and Sources>Transformations and Transfer of Energy
In a simple Pendulum the displacement is equal to amplitude. Then kinetic energy will be
EASY
Science>Physics>Energy: Forms and Sources>Transformations and Transfer of Energy
In any physical or chemical process, the total energy:
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Science>Physics>Energy: Forms and Sources>Transformations and Transfer of Energy
An electric device which converts electric energy into mechanical energy is called
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Science>Physics>Energy: Forms and Sources>Transformations and Transfer of Energy
A cell is used to generate _____.
EASY
Science>Physics>Energy: Forms and Sources>Transformations and Transfer of Energy
Cooking gas converts _____ energy into heat energy.
EASY
Science>Physics>Energy: Forms and Sources>Transformations and Transfer of Energy
Chemical energy is converted into _____ energy in an electrical cell.
EASY
Science>Physics>Energy: Forms and Sources>Transformations and Transfer of Energy
Loudspeaker converts electrical energy to _____ (sound/heat) energy.
EASY
Science>Physics>Energy: Forms and Sources>Transformations and Transfer of Energy
In a steam engine _____energy changes into mechanical energy.
EASY
Science>Physics>Energy: Forms and Sources>Transformations and Transfer of Energy
A dry cell is source of _____ energy.
EASY
Science>Physics>Energy: Forms and Sources>Transformations and Transfer of Energy

In a loudspeaker, _____ energy is converted into sound energy.

EASY
Science>Physics>Energy: Forms and Sources>Transformations and Transfer of Energy

In an electric drill, mechanical energy is converted into _____ (heat / chemical) energy.

EASY
Science>Physics>Energy: Forms and Sources>Transformations and Transfer of Energy

The _____ energy stored in the wood gets converted into heat and light energies when it is burnt.