Lesson: Uniform Electric Fields High School Physics

Physics

In this lesson, we will learn how to determine the change in potential energy of charged objects that move parallel to uniform electric fields.

Worksheet

Q1:

A positively charged particle moves at a constant speed between the point and the point where it enters a uniform electric field. Assume that gravitational and drag forces on the particle are negligible.

Which of the sections of the particle’s trajectory can be consistent with the net work done on the particle being zero?

Which of the sections of the particle’s trajectory can be consistent with the net work done by the particle being zero?

Q2:

A positively charged object moves 13 cm inside and parallel to a uniform electric field with a strength of 1.28 mN/C, as shown in the diagram. What is the potential difference between the object’s initial and final positions? Answer to two significant figures.

Q3:

Which of the following formulas correctly relates the electric potential difference between two points in a uniform electric field to the electric field strength, where is the electric potential difference, is the charge of a particle in the field, is the distance between the points, is the Coulomb constant, and is the electric field strength?

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