Physics
Give one example of each when:
(i) Chemical energy changes into electrical energy.
(ii) Electrical energy changes into sound energy.
Work, Energy & Power
ICSE 2020
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Answer
(i) Chemical energy changes into electrical energy — In a battery when current is drawn from it in the external circuit.
(ii) Electrical energy changes into sound energy — In a loud speaker, electrical signals vibrate the diaphragm of loud speaker to produce sound.
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