What are the force experience by a charged particle in (i) Electric Field (ii) magnetic field? Define Electron Volt (eV)?

(i) Electric Field: A charged particle in an electric field experiences a force known as the electric force. This force is given by the equation F = qE, where F is the force, q is the charge of the particle, and E is the electric field strength. The direction of the force is along the direction of the electric field for a positive charge and opposite to the direction of the field for a negative charge.

(ii) Magnetic Field: A charged particle moving in a magnetic field experiences a force known as the magnetic force. This force is given by the equation F = qvBsinθ, where F is the force, q is the charge of the particle, v is the velocity of the particle, B is the magnetic field strength, and θ is the angle between the velocity and the magnetic field. The direction of the force is always perpendicular to both the velocity of the particle and the direction of the magnetic field.

Electron Volt (eV): An electron volt is a unit of energy that is particularly convenient in the field of atomic and nuclear physics. It is defined as the amount of kinetic energy gained by an electron when it is accelerated through an electric potential difference of one volt. It is equal to approximately 1.6 x 10^-19 joules.