A magnetic field___________________?
Aexerts a force if the charged particle is moving perpendicular to the magnetic field lines
Bexerts a force if the charged particle is moving in the direction of the magnetic field lines
Calways exerts a force on a charged particle
Dnever exerts a force on a charged particles
Correct answer
A. exerts a force if the charged particle is moving perpendicular to the magnetic field lines
Explanation
exerts a force if the charged particle is moving perpendicular to the magnetic field lines is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.