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An electric kettle has two heating coilsWhen oneof the coils is connected to an a.csource - the water inthe kettle boils in 10 minutesWhen the other coil isused - the water boils in 40 minutesIf both the coils areconnected in parallel - the time taken by the samequantity of water to boil will be [2003]

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An electric kettle has two heating coilsWhen oneof the coils is connected to an a.csource - the water inthe kettle boils in 10 minutesWhen the other coil isused - the water boils in 40 minutesIf both the coils areconnected in parallel - the time taken by the samequantity of water to boil will be [2003]






 
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