Magnitude of electric field created by a charge | Physics | Khan Academy

In this video David explains how to find the magnitude of the electric field created by a point charge and solves a few examples problems to find the electric field from point charges. Created by David SantoPietro.

Physics on Khan Academy: Physics is the study of the basic principles that govern the physical world around us. We'll start by looking at motion itself. Then, we'll learn about forces, momentum, energy, and other concepts in lots of different physical situations. To get the most out of physics, you'll need a solid understanding of algebra and a basic understanding of trigonometry.

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[littlefighter]

This video help me unimagineably to understand the magnitude of electric feild
Special thank to you, may the lord bless you
Best wishes from iran

[brosisjk]

simply beautifully explained, thank you

[silver]

I wish you were my physics teacher right now, mine is horrible at explaining and just tells us to read the textbook, thank you

[ssoumya]

girls n guys, a beautiful thing to know, graph b/w r and E(electric field) is gonna be a rectangular hyperbola, as u see E is inversely proportional to r^2

[-fiftyshadesoftired]

Why is that the 10x to the power of 9 changed to 6?

[veereshkammara]

Sir why radially inwards if negative and outwards if positive charge

[ebrimaceesay]

you deserve more credits. live long Prof. 😍😍

[BumuSingh]

3:47 uh said Q1 is a point charge ... No Q2 is the point charge .btw nyc explanation surrr!!!

[ssoumya]

u mean we reckon with test charge which is always positive. so, it will be attracted if we hv negative charge n will be kept off if we got a positive charge as the main charge of which we hv to find thee electric field...ryt?

[shannaalise]

somebody please explain a brief summary Im just having hard time taking all this in

[ssoumya]

0:14 ain't Q2 having an electric field?or is that the 'test charge' whose presence doesn't affect the electric field due to the source charge Q1...if so, y didnt we hear that frm our prof

[jsathibabu]

Sir but if the charge create force on another charge we can say it is accelerating it so it distance change so the force on that charge not constant EXPLAIN🤔