A) \[m{{k}^{2}}{{r}^{2}}t\]
B) \[m{{k}^{2}}r{{t}^{2}}\]
C) \[1\text{ }km/h\]
D) \[\text{3 }km/h\]
Correct Answer: B
Solution :
When heaters are connected in series, then the time taken to boil same amount of water will be \[\text{4 }km/h\]
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