A) 15 min
B) 20 min
C) 7-5 min
D) 25 min
Correct Answer: B
Solution :
When heaters are connected in series, the time taken to boil same amount of water will be \[={{t}_{1}}+{{t}_{2}}\] \[=10+10=20min\]You need to login to perform this action.
You will be redirected in
3 sec