Advertisements
Advertisements
प्रश्न
Name the energy transfers which occur when :
an electric ball rings
Advertisements
उत्तर
An electric bell converts electrical energy to sound energy.
APPEARS IN
संबंधित प्रश्न
Show that the sum of kinetic energy and potential energy (i.e., total mechanical energy) is always conserved in the case of a freely falling body under gravity (with air resistance neglected) from a height h by finding it when
- The body is at the top.
- the body has fallen a distance x.
- the body has reached the ground.
Is energy a vector quantity?
State whether the object possess kinetic energy, potential energy, or both :
A bird running on the ground ____________.
Give two examples where a body possesses both, kinetic energy as well as potential energy.
Name the device or machine which convert :
Mechanical energy into electrical energy.
Name the device or machine which convert :
Electrical energy into light energy.
Five electric fans of 120 watts each are used for 4 hours. Calculate the electrical energy consumed in kilowatt-hours.
Describe the energy changes which take place in a radio.
Name the energy transfers which occur when : a torch is on
In the case of negative work, the angle between the force and displacement is
