Lesson: Electric Field of a Point Charge
In this lesson, we will learn how to calculate the electrostatic force produced at a given distance from a point charge.
Sample Question Videos
Worksheet: 4 Questions • 1 Video
The magnitude of an electric field is 100 N/C at a distance of 0.50 m from a point particle that has a charge of , what is the value of ?
An electron is located m away from an alpha-particle. The alpha-particle has exactly double the charge of the electron.
What is the magnitude of the electric field due to the alpha-particle at the location of the electron?
What is the magnitude of the electric field due to the electron at the location of the alpha-particle?
What is the magnitude of the electric force on the alpha-particle?
What is the magnitude of the electric force on the electron?
The Earth has a net charge that produces an electric field aligned vertically downward at the earth’s surface. Assume a value of 150 N/C for the magnitude of the electric field and a value of km for the radius of the Earth.
What is the magnitude and sign of Earth’s excess charge, noting the electric field of a conducting sphere is equivalent to a point charge at its center?
What magnitude acceleration will the Earth’s electric field produce on a free electron near Earth’s surface?
What mass object with a single extra electron will have its weight supported by the Earth’s electric field near the Earth’s surface?