JEE Main 202624 Jan, Evening shiftPhysicsHardCurrent Electricity150× since 2002
In a meter bridge experiment to determine the value of unknown resistance, first the resistances 2 Ω and 3 Ω are connected in the left and right gaps of the bridge and the null point is obtained at a distance cm from the left. Now when an unknown resistance Ω is connected in parallel to 3 Ω resistance, the null point is shifted by 10 cm to the right of wire. The value of unknown resistance is ______ Ω.