Advertisements
Advertisements
Question
Energy can exist in several forms and may change from one form to another. State the energy changes that occur in the Charging of a battery.
Advertisements
Solution
Electrical energy changes into chemical energy.
APPEARS IN
RELATED QUESTIONS
State the energy changes in the following while in use An electric oven.
State the energy changes that occur in the following :
Lighting of a torch bulb.
Energy can exist in several forms and may change from one form to another. State the energy changes that occur in photosynthesis in green leaves.
State the energy changes in the following case while in use:
Burning coal
A metal ball of mass 2 kg is allowed to fall freely from rest from a height of 5 m above the ground. What happens to the mechanical energy after the ball hits the ground and comes to rest?
Explain conservation of energy.
Choose the odd one:
A boy is moving on a straight road against a frictional force of 5 N. After travelling a distance of 1.5 km he forgot the correct path at a roundabout (Fig. 11.1) of radius 100 m. However, he moves on the circular path for one and half-cycle and then he moves forward up to 2.0 km. Calculate the work done by him.
Define watt. Express kilowatt in terms of joule per second. A 150 kg car engine develops 500 W for each kg. What force does it exert in moving the car at a speed of 20 ms–1?
In an electric cell while in use, the change in energy is from ______.
