Two known resistances of RΩ and 2RΩ and one unknown resistance XΩ are connected in a circuit as shown in the figure. If the equivalent resistance between points A and B in the circuit is XΩ, then the value of X is ____ Ω.
Held on 21 Jan 2026 · Verified 6 Jul 2026.
(3−1)R
2(3−1)R
(3+1)R
R
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