1. The Force:

* Electric fields exert forces on charged particles. Since electrons are negatively charged, they experience a force in the opposite direction of the electric field.

* The force on an electron is given by: F = qE, where:

* F is the force

* q is the charge of the electron (negative)

* E is the electric field strength

2. Acceleration:

* The force causes the electron to accelerate. This acceleration is in the opposite direction of the electric field.

* The acceleration is given by: a = F/m = (qE)/m, where:

* a is the acceleration

* m is the mass of the electron

3. Motion:

* The electron starts from rest, so its initial velocity is zero.

* Due to the acceleration, the electron gains velocity in the direction opposite to the electric field.

* The electron's motion is governed by the laws of kinematics. This means its velocity and position change over time according to the acceleration it experiences.

In Summary:

A free electron at rest in an electric field will experience a force that causes it to accelerate in the direction opposite to the field. The electron will gain velocity and continue moving in this direction as long as the electric field is present.

Important Notes:

* The electron's motion is influenced by the strength of the electric field: A stronger field leads to a larger force and acceleration.

* The electron's motion is also influenced by collisions: If the electron encounters other particles (like atoms in a material), it will experience collisions that can change its motion.

* Free electrons in a vacuum: In a vacuum, there are no collisions, and the electron will move in a straight line, accelerating continuously in the direction opposite to the field.