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Battery shown in figure has .m.f.  and internal resistance  Current in the circuit can be varied by sliding the contact  If at any instant current flowing through the circuit is  potential difference between terminals of the cell is  thermal power generated in the cell is equal to  fraction of total electrical power generated in it.; then which of the following graphs is correct

a)b)c)d)Both (a) and (b) are correct



Question ID - 151141 | SaraNextGen Top Answer

Battery shown in figure has .m.f.  and internal resistance  Current in the circuit can be varied by sliding the contact  If at any instant current flowing through the circuit is  potential difference between terminals of the cell is  thermal power generated in the cell is equal to  fraction of total electrical power generated in it.; then which of the following graphs is correct

a)b)c)d)Both (a) and (b) are correct

1 Answer
127 votes
Answer Key / Explanation : (d) -

(d)

Terminal voltage  Hence the graph between  and  will be a straight line having negative slope and positive intercept.

Thermal power generated in the external circuit  Hence graph between  and  will be a parabola passing through origin.

Also at an instant, thermal power generated in the cell and total electrical power generated in the cell  Hence the fraction  so  It means graph between  and  will be a straight line passing through origin

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