The force on the current-carrying conductor in a magnetic field depends upon:
(a) the flux density of the field
(b) The strength of the current
(c) The length of the conductor perpendicular to the magnetic field
(d) The directions of the field and the current1
(a), (c) and (d) only
2
(a), (b)and (c) only
3
(a), (b) and (d) only
4
(a), (b), (c) and (d)