A) Resistance of the carbon filament lamp will increase but that of the tungsten will diminish when hot
B) Resistance of the tungsten filament lamp will increase but that of carbon will diminish when hot
C) Resistances of both the lamps will increase when hot
D) Resistances of both the lamps will decrease when hot
Correct Answer: B
Solution :
Rconductor µ Temperature and Rsemiconductor µ\[\frac{1}{\text{Temperature}}\]
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