A free electron is an electron that is not bound to an atom or molecule and is able to move freely within a material or in a vacuum.
When an electric field is present, it exerts a force on the free electron, causing it to accelerate in the direction of the field.
Technically, no. While a free electron is not bound to an atom or molecule, it is still affected by the electric field and is not completely free from external forces.
Yes, if the electric field is strong enough, it can overcome the electron's kinetic energy and stop its movement.
The behavior of free electrons in an electric field is crucial for understanding and controlling electricity and its applications, such as in electronic devices and power generation. It also plays a role in phenomena such as electric current and conductivity.