Latest IIT-JEE Aptitude Question SOLUTION: A resistance of 2 Ω is connected across one gap of a metre-bridge (the length of the wire is 100 cm) and an unknown
resistance, greater than 2Ω, is connected across the other gap
A resistance of 2 Ω is connected across one gap of a metre-bridge (the length of the wire is 100 cm) and an unknown
resistance, greater than 2Ω, is connected across the other gap. When these resistance are interchanged, the balance point
shifts by 20 cm. Neglecting any corrections, the unknown resistance is
(A) 3 Ω (B) 4 Ω
(C) 5 Ω (D) 6 Ω