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If a given volume of water in a 220 V h...

If a given volume of water in a `220 V` heater is boiled in `5 min`, then how much time will it take for the same volume of water in a `110 V` heater to be boiled?

A

20 min

B

30 min

C

25 min

D

40 min

Text Solution

Verified by Experts

The correct Answer is:
A
`H=(V_(2))/(R)t" "because H="same,R =same"`
`rArrt prop(1)/(V^(2))rArrt=4t = 20min.`
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