When do you say that energy transformation has taken place in an electric fan?
a. When it is plugged to the outlet and its blade has rotated.
b. When its blade rotated without plugging it to the outlet.
c. When the blade did not rotate after plugging it to the outlet.
d. When it is plugged to the outlet and the blades did not rotate.
a. When it is plugged to the outlet and its blade has rotated.
b. When its blade rotated without plugging it to the outlet.
c. When the blade did not rotate after plugging it to the outlet.
d. When it is plugged to the outlet and the blades did not rotate.
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Answer:
C.
Explanation:
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