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Question
The following are some of the energy transformations.
A. Electrical to light
B. Work to heat
C. Chemical to light
D. Electrical to sound
E. Mechanical to electrical
Identify the energy transformation that takes place in the following by inserting the corresponding letter in the shape provided.
(i) A candle flame
(ii) A torch is lighted
(iii) A microphone is used in a meeting
(iv) A cycle dynamo
(v) A piece of metal is being filed
Solution
(i) A candle flame - (C). Chemical to light
(ii) A torch is lighted - (A). Electrical to light
(iii) A microphone is used in a meeting - (D). Electrical to sound
(iv) A cycle dynamo - (E). Mechanical to electrical
(v) A piece of metal is being filed - (B). Work to heat
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