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Two resistors R1-(x)ohms and R2=1ohm are connected to a wire AB of uniform resistivity. The radius of the wire varies linearly along its axis from 0.2mm at A to 1mm at B. A galvanometer (G) is connected to the center of the wire, 50cm from each end along its axis, and shows zero deflection when A and B are connected to a battery. The value of x is _____.

Previous video (JEE Advance 2021 Paper 2) in this series can be seen at: https://youtu.be/5kxBD4Szhmc
Title Search on Other Platforms: JEE Advanced Physics 2022 Paper 2: #2 Radioactive Deay

Next video in this series can be seen at: https://youtu.be/Zx4itba03f0
Title Search on Other Platforms: JEE Advanced Physics 2022 Paper 2: #4 Units and Dimensional Analysis