A heater of \( 220 \mathrm{~V} \) heats a volume of water in 5 minutes time. A heater of \( 110 ...

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A heater of \( 220 \mathrm{~V} \) heats a volume of water in 5 minutes time.
A heater of \( 110 \mathrm{~V} \) heats the same volume of water in
(a) 5 minutes
(b) 8 minutes
(c) 10 minutes
(d) 20 minutes
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