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Q.

Is it true that the resistance of an incandescent filament of a lamp is comparatively much more than that when it is at room temperature?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is True.
When the bulb is switched on then the temperature starts to rise and the resistance increases along with it. Hence, it is true to say that the resistance of an incandescent filament of a lamp is comparatively much more than that when it is at room temperature.
 
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Is it true that the resistance of an incandescent filament of a lamp is comparatively much more than that when it is at room temperature?