What is the magnitude of magnetic force per unit length on a wire carrying a current $8\;A$ and making an angle of $30^{\circ}$ with the direction of a uniform magnetic field of $0.15\;T$?

Question

$\begin{array}{1 1} 0.6 \;Nm \\ 6\;Nm \\ 0.6\;N/m \\ 0.6\;Nm \end{array} $