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Effects of Heat

a heater boil...

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a heater boils certain amount of water in 15 minute another heater boils same amount of water in 10 minute time taken to boil same amount of water when both are used in parallel is

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An electric heater can boil a certain amount of water in 10 minutes and another heater can do it in 15 minutes, both working at the same voltage. If the two heaters are connected parallel across the same voltage as before, how much time will they take to boil the same amount of water?

1

3

minutes to boil a given amount of water. Heater-

2

6

t_{1}

t_{2}

are the time taken to boil the same amount of water, when the two heaters are connected in series and parallel, respectively, then

\frac{t_{1}}{t_{2}} = ?

[

Assume same cell is connected in all the cases

]

Q. A heater boils 1 kg of water in time

t_{1}

and another heater boils the same water in time

t_{2}

. If both are connected in series, the combination will boil the same water in time:

Q. An electric heater, operating at

220 V

5 l

5 minutes

. If it is used on a

110 V

line, it will boil the same amount of water in:

Q. A heater boils 1 kg of water in lime

t_{1}

. Another heater boils it in lime

t_{2}

. If both are connected in series, the combination will boils same water in time

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