An electric kettle has two coils. When one coil is switched an it takes `5` minutes to boil water and when second coil is switched on it takes `10` minutes .How long will it take to boil water, when both the coil are used in series ?

An electric kettle has two coils of same power . When one coil is switched on , it takes 15 min to boil water , and when the second coil is switched on , it takes 30 min . How long will it take to boil water when both the coils are used in i . Series and ii . parallel?

An electric kettle has two coils of same power . When one coil is switched on , it takes 15 min to boil water , and when the second coil is switched on , it takes 30 min . How long will it take to boil water when both the coils are used in i . Series and ii . parallel?

An electric kettle has two coils when one of the coils is switched on, the kettle can boil water inside it in 12 minutes to boil.when the other coil is switched on it took 24 minutes o boil.If the coils are connected in parallel and is swiched on , find the times taken for boiling of water.

An electric kettle has two coils. When one of these is switched on, the water in the kettle boils in 15 minutes. When the other is switched on, the water boils in 30 minutes. In how many minutes will water boil if the coils are connected in series and switched on?

An electric kettle has two heating coils. When one of them is switched on water in it boils in 6 minutes and when other is switched on water boils in 4 minutes. In what time will the water boil if both coil are switched on simultaneously

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.

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.

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.