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Two conducting wires of the same material and of equal lengths and equal diameters are first connected in series and then parallel in a circuit across the same potential difference. The ratio of heat produced in series and parallel combination would be:

(a) 1:2 (b)2:1 (c) 1:4 (d) 4:1

1 Answer

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Best answer

Suppose the resistance of each one of the two wires is.R.
The equivalent resistance of the series combination,

Thus, the correct answer is (c).

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