A straight conductor of length L carrying a steady current I is placed in a uniform magnetic field of magnitude B, the conductor making an angle θ with the field.
(i) State the expression for the magnitude of the magnetic force acting on the conductor.
(ii) Identify the two possible orientations of the conductor for which this magnetic force becomes zero and briefly justify your answer using an appropriate trigonometric value.
(iii) State the orientation that gives the maximum possible value of the force and write the corresponding expression for this maximum force.