Campo Elétrico - Aula 07 (CAMPO ELÉTRICO UNIFORME)

Professor Davi Oliveira introduces the lesson on uniform electric fields, emphasizing the importance of understanding the earlier classes. He explains that a uniform electric field has constant intensity, direction, and sense at all points. He illustrates this with the concept of parallel lines that represent the field in textbooks, explaining the basic characteristics of electric fields generated by two fixed charges: positive and negative.

The professor describes how the electric field is established between two charged plates, with the positive plate generating an outward field and the negative plate generating an inward field. He also mentions applications of uniform electric fields, such as in X-ray machines, where the electric field intensity is crucial for the equipment's operation and the resulting medical imaging.

Davi provides an example involving two test charges placed in a uniform electric field, discussing the calculation of electric force on each charge. He guides how to find the direction and magnitude of these forces, emphasizing the significance of the charge's nature (positive or negative) in determining the force direction relative to the field.

He moves on to a more advanced example involving equilibrium in an electric field, where he discusses the relationship between electric force and gravitational force acting on a charged particle at rest. The equations used to balance these forces are presented, enhancing students' analytical skills in problem-solving.