You have been provided with four 400 ohm resistors each. The number of ways in which these can be combined to have different equivalent resistances is

You have been provided with four 400 ohm resistors each. The number of

1.	You have been provided with four 400 ohm resistors each. The number of ways in which these can be combined to have different equivalent resistances is
Answer» seven different combinations and seven different equivalent RESISTANCES EIGHT different combinations and seven different equivalent resistances nine different combinations and eight different equivalent resistances ten different combinations and nine different equivalent resistances Solution :ARRANGE the resistors in all possible combinations and get the number of combinations as ten with nine different values. The combinations can be all 4 in SERIES, all 4 in parallel, 3 in series with 1 in parallel, 3 in parallel with 1 in series etc. The different combinations and their equivalent resistances are as shown in the figure.

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You have been provided with four 400 ohm resistors each. The number of ways in which these can be combined to have different equivalent resistances is

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