A) \[\frac{R}{{{n}^{2}}}\]
B) \[{{n}^{2}}R\]
C) \[n\,R\]
D) \[\frac{R}{n\,}\]
Correct Answer: B
Solution :
In domestic circuit, bulbs are connected in parallel, therefore the potential difference across each bulb is same. From Joules law \[R=\frac{{{V}^{2}}}{P}\] From above dilation we conclude that bulb having higher power will have less a resistance and vice-versa. Hence, resistance of 40 W bulb is more.You need to login to perform this action.
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