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An electric kettle has two coils. When o...

An electric kettle has two coils. When one of these is switched on, the water in the kettle boils in 6 minutes. When the other coil is switched on, the water boils in 3 minutes. If the two coils are connected in series, find the time taken to boil the water in the kettle.

A

3 minutes

B

6 minutes

C

2 minutes

D

9 minutes

Text Solution

Verified by Experts

The correct Answer is:
D
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