4 A current of 10 A is established in a long wire along

Last updated: 6/3/2023

4 A current of 10 A is established in a long wire along positive z direction The magnetic field B at the point 1m 0 0 is 1 1 T along the y direction 2 2 T along the y direction 3 1uT along the x direction 4 2 T along the x direction