Physics · Current Electricity

Two resistors 2 Ω and 3 Ω are connected in the gaps of a meter bridge. The null point is obtained with the contact of the jockey at some point on the wire XY. When an unknown resistor is connected in parallel with the 3 Ω resistor, the null point is shifted by 22.5 cm toward Y. The resistance of the unknown resistor is ____ Ω.

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