Question

2) If n resistors of equal resistance are first connected in series and then in parallel,
the ratio of he maximum to the minimum resistance ....................... .
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Answer 1

Answer:

If R is the resistance of one resistor, the resistance of N equal resistors connected in series is N R and the resistance of N resistors connected in parallel is R/N. Therefore the ratio of maximum to minimum resistance is N^2.

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Answer 2

Answer:

)    n     

(b)    1/n2

        (c)    n2

        (d)    1/n

4 years ago

Answers : (2)

IF n EQUAL RESISTORS OF RESISTANCE ''R'' ARE CONNECTED IN SERIES THEN THE EQUIVALENT RESISTANCE = nR

SIMILARLY IF n EQUAL RESISTORS OF RESISTANCE ''R'' ARE CONNECTED IN PARALLEL THEN THE EQUIVALENT RESISTANCE =R/n

THEREFORE MAXIMUM RESUSTANCE IS nR

AND MINIMUM RESISTANCE IS R/n

THEREFORE THE RATIO IS nR/(R/n)= n2