An electric kettle has two thermal coils. When a current is passed in one of them, water in the kettle boils in 6 minutes and when current is passed in other one, the water boils in 8 minutes.

If both the coils are joined in series, then how long will it take water to boil ?

7 min 10 min 14 min 16 min

14 min

The resistances get added in series.