Question

when different wires of same dimension but different materials connected such that these are joined end to end then what happens to potential difference across each wire?

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Answer 1

Answer:

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

Then RS = R + R = 2R ----> (1) 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 ----> (1)

And 1 / RP = 1 / R + 1 / R

1 / RP = 2 / R

Or RP = R / 2 -> (2)

Now the ratio of heat produced is given by: