A long, straight wire carrying a current of I experiences a magnetic field of B to the left and at one instant, an electron, a distance d (mm) from the wire travels at a velocity v(m/s) parallel to the wire and in the same direction as the current.
A) Find the direction and magnitude of magnetic force. Where I=3.0A, B= 7T, d=4.5cm and v=1.0x 10 4 m/s.