Give one example of each of the transformations of electrical energy into heat, light and mechanical energy and one example of the transformation of kinetic energy into electrical energy.

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Solution

Example of the transformation of electrical energy into heat is an electric geyser in the house in which electric energy gets converted to thermal energy to heat water.
Example of the transformation of electrical energy into light is Light Bulb in which electrical energy gets converted to light.
Example of the transformation of electrical energy into mechanical energy is an electric motor that converts electric energy to mechanical energy which is used to blow air in the room, lift the water up etc.
Example of the transformation of kinetic energy into electrical energy is the regenerative brake system used in some modern automobiles which converts the kinetic energy of the automobile into electrical energy.

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Q. Name the devices or machines which convert :

(i) Electrical energy into sound energy.
(ii) Heat energy into kinetic energy (or mechanical energy).
(iii) Chemical energy into kinetic energy (or mechanical energy).
(iv) Chemical energy into heat energy.
(v) light energy into heat energy.

Give any two examples each for the following energy transformation

(a) Mechanical into heat energy(b) Mechanical energy into heat energy(c) Mechanical energy into sound energy(d) Electric energy into heat energy(e) Electric energy into magnetic energy

name the appliances that work under the following energy transformations:

1. Sound Energy into Electrical Energy

2. Heat Energy into Mechanical Energy

Give an example of the following conversion :
(a) Kinetic energy into heat energy.
(b) Muscular energy into kinetic energy.
(c) Chemical energy into sound, heat and light energy.

Give an example of electrical energy converted into light energy. (1mark)

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