Question

You are given n identical resistors each of resistance rΩ. First they are connected in such a way that the possible minimum value of resistance is obtained. Then they are connected in a way to get maximum possible resistance. The ratio of minimum and maximum resistance obtained in these ways is _____
(A) 1/n
(B) n
(C) n²
(D) 1/n²

Answer 1

They are connected in series to get maximum in this case resistance would be nr

and to get minimun resistance they are connected in parallel :. resistance in this case is n/r

:.ratio between minimum and maximum resistance is n/r/nr = 1/r^2

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Answer 2

Answer:

1/n²

Explanation:

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