Current Electricity and Electrical InstrumentEasy
Question
A heating coil can heat the water of a vessel from 200 C to 600 C in 30 minutes. Two such heating coils are put in series and then used to heat the same amount of water through the same temprature range. The time taken now will be (neglecting thermal capacity of the coils) -
Options
A.60 min
B.30 min
C.15 min
D.7.5 min
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