Physics q38

0. Six resistances are to be connected to a battery. After connecting a particular set of five resistances with values R1, R2, R3, R4 and R5 as shown in the figure, the sixth one R6 was to be connected between A and B. It was observed that the current in the circuit is independent of the value of R6. Then what should have been the relations between these resistances?

(NTSE Odisha, Stage-I, 2014-15)

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