Question:
A long straight hollow conducting tube carrying a current
Last updated: 6/26/2023
![A long straight hollow conducting tube carrying a current](https://media.kunduz.com/media/sug-question-candidate/20210824043725664967-3560285.jpg?h=512)
A long straight hollow conducting tube carrying a current along ve y axis as shown in the figure The line PQ is parallel to positive y axis The magnetic field at 1 2 3 and 4 is B B2 B3 and B4 respectively Then R R 2 R 4 42 3