Free AP Physics C lesson
Coulomb's Law & E Fields
This AP Physics C: Electricity & Magnetism lesson is designed for AP Physics C self-study. It includes 2 video lessons, 4 practice questions, and an estimated completion time of 15 minutes.
Video lessons
Coulomb's Law, The Principle of Superposition, and Electric Fields
Watch on YouTubeForce due to an Electric Field on a Point Charge, Torque due to an Electric Field on a Set of Charges, Information from Electric Field Lines
Watch on YouTube
Practice covered
- Two point charges, q_1 = +3.0 times 10^-6 C and q_2 = -2.0 times 10^-6 C, are separated by a distance of 0.50 m. Calculate the magnitude of the electrostatic force between them in newtons. (Use k = 9.0 times 10^9 , Ncdotm^2/C^2)
- Three point charges are arranged in a line. The principle of superposition states that the net electric force on one charge due to the other two is:
- A charge of -4.0 times 10^-6 C is placed in a uniform electric field of magnitude 500 N/C directed to the right. Calculate the magnitude of the force (in newtons) experienced by the charge.
- An electric dipole (two equal and opposite charges separated by a distance d) is placed in a uniform electric field. What is the net force and net torque on the dipole when it is perpendicular to the field?
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