15.3 Electric Fields | General Physics

In this lesson, Chad provides a lesson Electric Fields. The lesson begins with the mathematical relationship between the electrostatic force and the electric field: F=qE. This is used to derive a simple expression for the electric field and to show that the SI unit is the N/C. The electric field due to a point charge is then presented: E=kq/r^2 and is used to show the relationship to Coulomb's law.

Chad then shows how to draw electric field lines, explaining the rules for drawing electric field lines. He demonstrates that generally, electric field lines originate on positive charges and terminate on negative charges and give the direction of the electric field at that point in space. He also demonstrates how the number of electric field lines is related to the strength of the electric field and the magnitude of the charges in the diagram.

The lesson concludes with the solving of a couple physics electric fields practice problems. The first involves solving for the force and acceleration of a charged particle in an electric field. The second involves solving for the location in space of where the electric field is zero with nearby point charges.

00:00 Lesson Introduction
00:50 F=qE; Introduction to Electric Fields
08:09 Electric Field Lines
10:51 Electric Field, Charge, and Acceleration Calculation
12:28 How to Calculate where the Electric Field is Zero

[BruceWayne-in]

Another banger vid from chad.

I finished biochem already but I'm hyped for other students that will get a biochem playlist one day haha

[caitlinnguyen]

An angel sent from heaven for real. Basically self studying physics 2 for the mcat because the kaplan review book expects some knowledge about it already because it's condensed. I'll be taking the actual class too close to my proposed test date so I knew I needed to teach myself instead of waiting. Found these awesome videos and will be enrolling in your prep course as well for the resources there. You should read your ASU rate my prof reviews (many adore you). Thank you professor!

[alibilginler]

13:36 If so, the test charge can also be used to find the point where the electric field is strongest.

[abrahamhamadi]

Just conceptually, why do we need to use a positive test charge or even a test charge at all to determine when the electric field will be zero?

[alibilginler]

So, is the test charge always positive?

[alibilginler]

For what other purposes is the test charge used?

[alibilginler]

As I understand it, the electric field is zero at the point where the net force is zero.

[Czkyhna]

why didnt we convert mm to m in the last question? thanks for ur hard work sir!

[Macedonia]

pls explain the using chemicals inorganic and organic

[LiamGannon-db]

I like the shirt. Thanks for the video.

[Macedonia]

Sir how prepare Electro magnetic oil.pls explain at least next vedio.we need this topic

[LiamGannon-db]

I like the shirt. Thanks for the video.