Concepts to Remember:

Electric Field:

• Electric field lines represent the direction of the electric field at a point.
• The electric field is a vector quantity that describes the strength and direction of the electric force at a point.

###Magnetic Field:

• Magnetic field lines represent the direction of the magnetic field at a point.
• The magnetic field is a vector quantity that describes the strength and direction of the magnetic force at a point.

###Motion of a Charged Particle in an Electric Field:

• A charged particle moving in an electric field experiences an electric force, which causes it to accelerate.
• The acceleration of a charged particle in an electric field is proportional to the magnitude of the electric field and the charge of the particle.
• The direction of the acceleration is in the direction of the electric field.

###Motion of a Charged Particle in a Magnetic Field:

• A charged particle moving in a magnetic field experiences a magnetic force, which causes it to deviate from its original path.
• The magnetic force on a charged particle is proportional to the magnitude of the magnetic field, the velocity of the particle, and the charge of the particle.
• The direction of the magnetic force is perpendicular to the direction of the magnetic field and the velocity of the particle.

###Lorentz Force:

• The Lorentz force is the net force acting on a charged particle moving in an electric field and a magnetic field.
• The Lorentz force is the vector sum of the electric force and the magnetic force.

###Applications:

• Motion of charged particles in electric and magnetic fields is important in many areas of physics, including plasma physics, particle accelerators, and magnetic resonance imaging (MRI).