A long, straight, current carrying wire in a uniform magnetic field?

Question

A long, straight wire carrying a current of 959 A is placed in a uniform magnetic field whose magnitude is 8.76x10-3 T. The wire is perpendicular to the field. Find a point in space where the net magnetic field is zero. Locate this point by specifying its perpendicular distance from the wire.

Not sure what equation to use.

Answer 1

Maxwell's Equations. You need to read the chapter. One of them in particular is the key.