Which of the following equipment does not work on principle of Joule's law?
Electric Heater
Electric Iron
Electric Bulb
Electric Fan
A
Electric Bulb
B
Electric Heater
C
Electric Iron
D
Electric Fan
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Solution
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The electric iron, electric heater and electric bulb are some of the familiar devices based on Joule’s Law, but electric fan is not based on Joule's Law. Thus option D is correct.
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