Question

State the energy changes in the following cases while in use :-
i. Burning coal
ii. Electric cell
iii. A steam engine
iv. Microphone

Give other necessary information.
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Answer 1

$\textit\pink{Required Answer : }$

(i) Chemical energy to heat energy

(ii) Chemical energy into electrical energy

(iii) Heat energy into mechanical energy

(iv) Sound energy into electrical energy

Answer 2

Answer:

Required Answer :-

★ When a coal is burn then this is a checmical energy but when it burns it changes into Heat energy as burning of coal gives heat.

★ An electrical cell is also an example of chemical energy but when it fit into a torch then it gives heat energy and light energy and electrical energy.

★ A steam engine changes its energy into smoke and heat energy.

★ A microphone works when it has an electric cell. And after the electrical energy is converted into Sound energy.

Know More :-

Types Of Energy With Example

• Light Energy :- Bulb,Sun
• Heat Energy :- Heater, Sun
• Solar energy :- Solar Pannel, Satellite
• Sound Energy :- Microphone, Headphones