A) \[5\,\min \]
B) \[10\,\min \]
C) \[20\,\min \]
D) \[40\,\min \]
Correct Answer: D
Solution :
When two coils are connected in series, then time taken becomes double because in series effective resistance becomes double and effective power becomes half. \[\left( \because \,\,P=\frac{{{V}^{2}}}{R} \right)\]You need to login to perform this action.
You will be redirected in
3 sec