Three long parallel current carrying wires are placed with

Last updated: 6/21/2023

Three long parallel current carrying wires are placed with their lengths normal to the plane of paper The magnitude and direction of current are shown in the figure The currents in wire P is 21 into the plane of paper The current in each of wires Q and R is I and directed out of the plane of the paper The variation of magnetic field along the line xx given by IR