A) 300W
B) 100W
C) 40 W
D) all gives same light
Correct Answer: C
Solution :
Resistance\[R=\frac{{{V}^{2}}}{P}\] \[R=\propto \frac{1}{P}\] So, the resistance of 40 watt is maximum, heat produced\[H\propto R\] \[\therefore \]heat produced in 40 watt bulb will be maximum, so it will glow more.You need to login to perform this action.
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