An infinite long straight wire with current I flowing along the positve z-axis is located at coordinates `P(-12m, 5m)`. Determine the unit vector showing the direction of magnetic field at the origin.

Through a straight conduction wire, current is flowing along positive z-direction. What should be the direction of the applied magnetic field so that the wire will experience the maximum force?

Consider two infinitely long wires parallel to Z-axis carrying same current I in the incitive z direction. One wire passes through the point L at coordinates (-1, +1) and the other wire passes through the point M at coordinates (-1, -1). The resultant magnetic field at the origin O will be

A long, straight wire lies along the y-axis and carries a current I=8A in the y-direction (as shown in Fig) In addition to the magnetic field due to the current in the wire, a uniform magnetic field vecB_0 with magnitude 1.50xx10^-6T is in the +x direction. What is the total field (magnitude and direction ) at following points in the plane? (a) x=0,z=1.00m (b) x=1.00m,z=0 (c) x=0, z=-0.25m

Two infinitely long, thin, insulated, straight wires lie in the x-y plane along the x- and y- axis respectively. Each wire carries a current I, respectively in the positive x-direction and positive y-direction. The magnetic field will be zero at all points on the straight line:

Two infinitely long, thin, insulated, straight wires lie in the x-y plane along the x- and y- axis respectively. Each wire carries a current I, respectively in the positive x-direction and positive y-direction. The magnetic field will be zero at all points on the straight line: