Equipotential surfaces (& why they are perpendicular to field) | Electric potential | Khan Academy
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- เผยแพร่เมื่อ 6 มี.ค. 2021
- Equipotential surfaces have equal potentials everywhere on them. For stronger fields, equipotential surfaces are closer to each other! These equipotential surfaces are always perpendicular to the electric field direction, at every point.
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We want more videos about equipotential surface.
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Clear explanation
I have a theory y we equipotential surface are perpendicular to field. Imagine a point charge . So, if equipotential surface is not sphere and some other shape , the angle at most point with respect to electric field varies . So,if field varies then the potential also varies place to place ( bcoz , force by field varies . So, velocity of charge varies. So, kinetic energy varies .so, potential also varies) . Just my theory not sure its crct or not
Yeah it's true infact you said the same thing
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1 ) becouse of redius the equipotential surface is perpandicular
2 ) becouse of strength of electric field the line of force is further and father away from each other
3 ) supporting at every point is same or equal is the definition of equipotential surface
Am i right ????????????????????????
Thank you sir 😊
Superb
thank you sir
8:58
The equipotency is broken there
Some where more somewhere less
That's why there are not perpendiculat
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Nice
sir your voice is very very very sweet
Also would it be safe to say that if field lines weren't perpendicular to equipotential lines then there would be a basis vecto parallel or tangent to the potential surface that would produce work therefore change the potential energy of the surface hence making it not equipotential which by definition to remain equipotential requires perpendicular field lines...
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In the last 3 qns you asked, can someone or you... explain the answer please?
You helped me better than my Physics teacher, thank you!!
9:02
Sir what about the force we applied to move the test charge in the equipotential surface.
Hi! The answer to your question is that only the work done BY THE FIELD is zero. If we were to calculate the work that WE do on the charge, it wouldn't be zero.
Thanks dad
Daddy 😳
Why the equipotential lines are parallel to each other and to the plates?
What I thought is ..say those parallel plates wont be parallel but at some angle inclined from horizontal... simply tilted than all the point at that surface wont be at the same distance from the source due to which E.dr ..will change that is potential will change but as it is a equipotential surface it should not change ...😊..the equipotential surface has to be perpendicular to the field
9:24 what about the work we would do to move that charge?
That is not along the equi-potential surface... The qns we come across are either telling us to move the charge away or towards the source charge which ends up not being zero... If it is along the equi-potential surface, it'll be zero
Why field lines are perpendicular to equipotential surface
👍👍..
Why in that equipotential surface that electric potential decrease in opposite direction of feild lines
👍
although, technically they are parallel no?
Summary Of The Video
*Equipotential Surface*
* *Definition* - Surface at which potential at every point is equal.
*Equipotential Surface By A Single Point Charge*
* A Single point charge creates a spherical equipotential surfaces.
* We can draw as many equipotential surfaces as we want.
* Where Electric Field is Strong equipotential surface are close to each other.
* As we go far away equipotential surface go farther.
*Equipotential Surface Created By A Infinite Plane Sheet*
* In this case we get a plane equipotential surface.
* Also In this case equipotential surfaces are equidistant from each other because here Electric field created by plane sheet is uniform.
*Properties Of Equipotential Surface*
* Electric field is always normal to the equipotential surface.
* When we move a test charge in equipotential surfaces from one point to another we do zero work.
* Two equipotential surface never intersect.
Thank you!! 💅🏼
Sir i am really surprised about your answer after telling reason is perpendicular work done really shocking 🧐🧐
Sir please make hindi lecture videos of 12th class physics
I love how this guy is trying his best to fake his accent