What is the resistance of B? how much heat will be produced in 5 minutes ?

Posted on 2013-12-05 14:10:00 in Engineering by MILO

Two heaters A and B are in parallel across the supply voltage V. Heater A produces 500 kilo –calories in 20 minutes and B produces 1000 kilo-calories in 10 minutes. The resistance of A is 10 ?. What is the resistance of B? If the same heaters are connected in series across same voltage, how much heat will be produced in 5 minutes.

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