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Law of Conservation of Energy

Name the ener...

Question

Name the energy transfer which occurs when :

(a) an electric bell rings

(b) someone speaks into a microphone

(c) there is a picture on a television screen

(d) a torch is on

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Solution

a) Electrical Energy → Sound Energy

(b) Sound Energy → Electrical Energy.

(c) Electrical Energy → Light Energy.

(d) Chemical Energy → Electrical Energy → Light Energy.

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