Physics 36 The Electric Field (2 of 18)

The electric field, charges, forces, accelerating particles, there's so much to cover and it's all so much fun! In this four part lecture series I'll introduce you to the principles used to accelerate atoms to 99.9% the speed of light in the LHC.

[kyleperez]

You always make it straightforward than my prof. You're the best. This is why I always passed my exams in
physics.

[MichelvanBiezen]

Daniel
Wow, that is an interesting question.
An electron is one of a few particles that are unique in nature.  It is a lepton, and it appears not to be made of smaller particles like the proton and the neutron, which are made of quarks.
The electron is very small and when it moves it behaves much like a photon, which is a wave particle that oscillates like a wave on a string.  When an electron revolves around a nucleus of an atom it does so like a wave and the orbit is an integer number of wavelengths  (1, 2, 3, etc)
An electron in a hydrogen atom travels around the nucleus six thousand trillion times per second
that is (6, 000, 000, 000, 000, 000) times per second.
We don't fully understand what gives a particle charge or what charge actually is.  Quarks have even more strange properties that attract and repel other quarks.  It is still a big mystery to us.

[Cheesedoodle]

this saved me! please don't stop making these helpful videos. 

[queenstrategy]

This is the only problem explanation that has actually made sense in all of my physics lectures. Your lectures are infinitely better than the ones at my school! Thank you so

[EagleLogic]

Professor,

I used your videos a lot for General Physics 1 and I was one of the few students to receive an A in that class. I know that the only reason I got an A was because of your videos. Here I am in Physics 2 now using your videos as resources. Do you accept donations for your work?

[Elio]

Thankyou a lot, you helped me with my physics exams ;)

[valeriereid]

Excellent thank you so very much for making this easy.

[elisabethnewman]

Thank you soo soo much for these videos, they are extremely helpful!

[zakirhussain-jsku]

Similar electric fields of electrons/protons repel each other. But an electron/proton has similar field around it. How similar electric field of electron or proton hold together. It should repel itself & disintegrate. This can only happen if we imagine the 'particles' which make up electric field around electron/proton have both negative & positive electric poles in opposite direction. This will sticks these particles together & behave just like iron filling in a magnetic field of north or south pole.

[jmezzy]

Do we always have to take the magnitude of the charge? Because I still get -6000N/C when summing up both electric fields...
E(total)= E1+E2
E(total) = k( (12x10^-6 )/3^2 + ((-8x10^-6))/2^2)) = -6000N/C

[worldacademy]

Hello Mr I have got a question 👋

How about negative sign ? because I'm in trouble with the summing-up of E1 and E2.

[zackgrey]

Since it's asking for the magnitude, wouldn't the final value be positive? Or would the negative be signifying the direction?

[juanmarcuslopez]

Great video as always, you teach better than my professors <3
BTW am I the only one where the sound only works on one earphone and not the other?

[robertdraxel]

But the second charge Q2 since it is -80 microCoulomb, I think it should be written as 8 x 10^-5 C, not -6 but maybe I miss something.

[zakariamohamud]

I am sorry, could you plz tell me how did you come up with E1 and E2?

[feflopizer]

Dear professor, I love phyisics and your lectures are great.

Here are my questions:
If two negative charges are placed at a distance n, they should repell each other, for they're both negative. However, their electric fields are pulling towards each of them!
So why do two negative charges repell each other?

Coming back at this video's example, what would happen if an electron was placed there? My guess is that it would be repelled by the total electric field, because the directions of the forces of the two charges would be inverted.

Thank you very much for the time and passion you're putting into all of these awesome lectures!

Federico

[ptyptypty]

If I have a Charge account at Sears... then do I find an Electric Field at Marshall Fields?... :)

[christianbonifacio]

Sir why did the given in the problem does not much in the soln? The -80uc and -8uc?

[Baichannyyuri]

Hello michel, i have been watched your videos quite a long time. I just have one question, for the second charge why does the -8 column the energy field of itself have to go outward (toward left side) and why does first charge have to go to the right side. Sorry this probably a stupid question, I'm a beginner. THANK YOU i love your videos

[sannvisal]

Thank you so much for this video.Love you