A −6.00 μC point charge is moving at a constant 8.00×106 m/s in the +z-direction, relative to a reference frame. At the instant when the point charge is at the origin of this reference frame, what is the magnetic-field vector B→ it produces at the point: x = +0.300 m, y = 0, z = −0.400 m? +11.5 μT j^ −11.5 μT k^ +19.2 μT k^ −11.5 μT j^ +11.5 μT k^ −19.2 μT j^ −15.4 μT k^
