Electric pot. : Find sign of work done | Electric potential & capacitance | Physics | Khan Academy

To find the sign of work done, check if the direction of the force and the displacement are the same or not. If they are in the same direction, work is positive, else it's negative. When moved slowly, work done by an external force on a charge is always in the opposite direction of work done by the electric force.

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Created by Mahesh Shenoy

[Aalijah_Matyevna]

Khan academy saving science students everyday.

[jockergone]

what an explanation, i have never seen a video like this. we are lucky to be in this era.

[seekscience]

Literally i don't have words to thank you for such wonderfull explaination 💜💜💜💜

[bluetopazy]

tysm for explaining this, its very difficult to find videos that explain topics from cbse in English :)

[BitGamerYT]

If this video hit one lakh views, can it be my comment in the top likes ?
I have never got likes

[VG__]

1:29 external work
3:44
Work done= F×d
6:00 feel it like struck magnets

[GiveawayWallah]

Thanks a lot there in no video on YouTube explaining the topic . I wasted time ....

[medico]

Sir but electric field is from +ve to - ve then at 2qust for b how work done by electric field is +ve

[manjunatha]

Sir please make a video on potential drop

[LeenaShaheen-zv]

I have a question about the part at 7:19. Since we know the negative test charge will be attracted towards the positive source charge, the force due to the electric field on the test charge will point downward. However, the electric field should point upward then because negative test charges will feel a force in the opposite direction of the electric field. Doesn't this mean that the electric field does positive work because it is moving in the same direction of the displacement? And wouldn't the external force be doing negative work because it is going in the opposite direction of displacement? just a concern of mine. Thank you

[abdulrafay]

I got the concept but sir kindly tell that how positive charge means proton will move from one place to another

[Jerk]

Why is it to make it move slowly only?

[janardhananka]

Can anyone help me plz
In first case direction of electic force is in the same direction of that of electric field then why it's not positive and also the ext. force which is in the opp direction of electric field is not negative why?

[dipsy]

What if it didn't say slowly in the question

[JonStoneable]

Why’s it important that it move slowly?

[clivd]

Can anyone help me with this:
The electric field created by a system of positive charges would exert a force on a negative charge that is in the direction away from the system. If we’re moving the negative charge far away from the system, the direction of displacement is the same as the direction of the force. In this case, the work done by the electric field is positive because work done
This is what chatgpt said, is the video wrong or what chatgpt said wrong?