There are TWO Types of Electric Field! #shorts

The second type is called the Electric Displacement Field #shorts

An electric field (often called the E-field) represents how charged objects interact with each other. Specifically, a charged object generates an E-field, and this shows what happens to a positive charge when placed near the source charge. The direction at each point shows the direction of the electrostatic force exerted on the new charge, and the size shows the magnitude of the force.

But it turns out there is also another kind of electric field - the electric displacement field (or D-field for short). it's related to the E-field by D = (epsilon)E. Epsilon is known as the permittivity of the material we happen to be studying, in which our fields are present.

In simple cases, epsilon is just a scalar, which represents the polarizability of the material. It measures how easily positive and negative charges are separated within the material due to an applied E-field. In more complicated materials, the polarizability can be direction-dependent (as it's easier to move charges in one direction over another).

Here we only focus on the simple cases where epsilon is a scalar. In these scenarios, the E and D fields are basically proportional to each other and serve the same purpose. But even in these cases, it's interesting to study the boundary between two materials. Even though the E-field may behave continuously across the boundary, the D-field may not as the polarizabilities of the two materials may be wildly different.

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[ParthGChannel]

Thanks for watching, friends! I definitely want to make a full video discussing this topic in a lot more detail now :)

As always, let me know what other topics to discuss in future videos too!

[p.g.bharadwaj]

Hell yeah! We need an other video covering this topic.

[dirichlettt]

Yes! Also please cover the H field too.

[monotonicallyuncertain]

We will come across D-field in displacement current between plates of capacitors, which Maxwell proposed

[aroncanapa]

This seems like it applies to how MOSFETs work, would love a video on that

[fufaev-alexander]

Yes, please! A small repetition of the topic would be nice! 👍😎

[mouadel]

I'm really glad i found this channel. You're making physics much easier. Keep going!

[mohammedfaaiz]

Yes we definitely want a brief explanation video of this topic

[verv]

The thought this video was going to be about the difference between an electric field caused by the presence of electric charges and one cause by a changing magnetic field.

[eulersfollower]

Please make a detailed video on this topic, I need to know how polarization is represented mathematically .

[duncankoepke]

Yes please! Electromagnetic fields class is kicking my butt

[animationbyparitosh]

What you just explained was explained by my professor of acd, at that time I didn't get that.
I only understood that it is useful for pn junctions, would like to get full video on this🤗

[romkaquattro]

Yes please, cover the entire Theory of Field please

[SatyaVenugopal]

Yes, I would very much like to see a video discussing the different purposes of the E and D fields in multi-material situations, thanks 😁

[Ranbir.Bhardwaj]

I want a full discussion on displacement field.

[stardust]

Yeah, i would love a detailed video on E vs D fields

[sMeLLwAtER]

thank you. after a 15 year break, you have inspired me to study physics.

[regth]

Always ready to learn more, a video on this topic would be great!

[inboccaallupo]

Yes, please make a video about this topic, because you are one of the best teachers I have seen and this topic is important for me since I am interested in antenna engineering and electromagnetics. Thank you for every single video you've made. :)

[shaiksha]

If you have full video please share the link..if not make a full video it will be very beneficial to understand behaviour of surfaces boundary conditions. Thank you.