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Q.

Is it true that the heating element of an electric heater glows but the cord of the electric heater does not glow?

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a

True

b

False

answer is A.

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Detailed Solution

The above statement is True.
The glow is due to heat produced in the element of the electric heater. The heating element of an electric heater is made of nichrome. It glows because a large amount of heat is produced in it by the passage of current due to its high resistance. But the cord of the heater is made of copper. It does not glow because negligible heat is produced when current is passed through it because of its low resistance.

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