Answer
No, not necessarily, because there still could be a magnetic field. If the magnetic field and the velocity of the charged particle make an angle of either $0^{\circ}$ or $180^{\circ}$ , there will be no magnetic force on the particle.
Work Step by Step
No, not necessarily, because there still could be a magnetic field. If the magnetic field and the velocity of the charged particle make an angle of either $0^{\circ}$ or $180^{\circ}$ , there will be no magnetic force on the particle.
