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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
(a) When an electric bell rings, the transformation of electrical energy into sound energy occurs.
(b) When someone speaks into a microphone, the transformation of sound energy into electrical energy occurs.
(c) When there is a picture on a television screen, the transformation of electrical energy into light and heat energy occurs.
(d) When a torch is on, the transformation of electrical energy into light energy occurs.
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