A) 100 W
B) 40 W
C) 60 W
D) Equal in all bulbs
Correct Answer: A
Solution :
We know that relation between power (P), resistance (R) and voltage (V) is \[\therefore \] \[P=\frac{{{V}^{2}}}{R}\] \[\Rightarrow \] \[P\propto \frac{1}{R}\] \[\Rightarrow \]\[R\propto \frac{1}{P}\] Hence, maximum power (100W) has minimum resistance.
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