Geofleur said:Imagine a neutral He atom. Now strip off all the electrons. What is left? Two neutrons and two protons, so...
The basic force on a charged particle in a magnetic field is called the Lorentz force, which is the force exerted on a moving charge by a magnetic field. It is perpendicular to both the direction of the magnetic field and the direction of motion of the particle.
The magnitude of the force on a charge in a magnetic field is determined by the charge of the particle, the strength of the magnetic field, and the velocity of the particle. It can be calculated using the equation F = qvB sin(theta), where q is the charge, v is the velocity, B is the magnetic field strength, and theta is the angle between the velocity and the magnetic field.
The direction of the force on a charge in a magnetic field can change depending on the direction of the magnetic field and the velocity of the particle. If the velocity and magnetic field are parallel, the force will be zero. If the velocity and magnetic field are perpendicular, the force will be perpendicular to both. If the velocity and magnetic field make an angle, the force will be at an angle to both.
The force on a charge in a magnetic field is responsible for the circular motion of the particle. The radius of the circular motion is directly proportional to the velocity of the particle and the strength of the magnetic field, and inversely proportional to the mass of the particle and the magnitude of the charge.
The direction of the magnetic field can affect the motion of a charged particle in different ways. If the magnetic field is parallel to the velocity of the particle, there will be no force and the particle will continue moving in a straight line. If the magnetic field is perpendicular to the velocity, the particle will experience circular motion. If the magnetic field is at an angle, the particle will experience both circular and linear motion.