Moving Charges And Magnetism

Two infinitely long wires each carrying the same current and pointing in \(+y\) direction are placed in the \(x y\)-plane, at \(x=-2 \mathrm{~cm}\) and \(x=1 \mathrm{~cm}\). An electron is fired with speed \(u\) from the origin making an angle of \(+45^{\circ}\) from the \(X\)-axis. The force on the electron at the instant it is fired is

[\(B_0\) is the magnitude of the field at origin due to the wire at \(x=1 \mathrm{~cm}\) alone].