Question

Two conducting wires of the same material and of equall length and equall diameter are first connected in series and then parallel circut across the same potential difference the ratio of heat produced in series and parallel combination would be

Answer 1

Answer:1/4

Explanation:

Heat produced in the circuit is inversely proportional to the resistance R.

Let RS be the equivalent resistances of the wires if connected in series and RP be the equivalent resistances of the wires if connected in parallel

Then RS =R+R=2R

And1/ RP = 1/R +1/R

1/ RP = 2/R

Or RP =R/2

Now the ratio of heat produced is given by

= 1/4

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