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50. Name the energy transfers which occur 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

Answer»

(a) converts electrical energy to sound energy.(b) A converts sound energy to electrical energy.(c) A converts electrical energy into light energy and heat energy.(d) A converts electrical energy of the battery into light and heat energy.



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