If a given volume of water in a 220V heater is boiled in 5 min, then same volume

If a given volume of water in a 220V heater is boiled in 5 min, then same volume of water in 110V heater can be boiled in what time interval?

(a) 20 min
(b) 30 min
(c) 25 min
(d) 40 min

20 min

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OA2006

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