Electric Potential Energy 

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If V=E*d (22:50) then U=-q*E*y becomes U=-q*V, which is the opposite of what you wrote (U=qV). I think this is a matter of sign conventions. If you are to specify that V=E*d, then I think U=-q*V. This seems to lead to the inconsistency with E. At 22:32 you find E=10,000V/m, but then at 28:27 you use E=-10,000V/m. If we use V=-E*d (which would give U=q*V, which is what you use), then V=100V=-E*(0.01), so that E=-10,000V/m.

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The negative signs are confusing but I guess it doesn't really matter because the difference of electric potential energy is what really matters.

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do irretional inequalities with even numbers, that one is still missing. like ✓(x² -1) > 2x

19:51 what if we did a different solve and equalize the both forms of equations u =eqy (1) and u =qv (2) and we get the same answer right?

thank you

for part b) i'm very confused. 18:23 isn't it asking for the "Electric Potential ENERGY", different from just the "Electric Potential", aren't they different formulas? why did you use just the EP formula instead of EPE????

Hi, Can anyone tell me why he puts a negative sign to electric potential energy equation?. I know we get the negative sign when work is being applied. But without applying any work. Potential energy be positive

why in other video of yours the formula of electric potential energy didn't have a - on it? it's only U=Eqy

I understand that you are trying to improve the previous videos by redoing them but where are the previous videos ... I really need them

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The maestro of Academics

what is the purpose of moving the negative sign on the other side?

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Is the electric field always negative?

why the workdone equals the negative of change of the electric potential energy

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Is there difference between electric potential and electric potential energy

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please can you help a noob, can somebody tell me if i can wire a 3 pole relay as a single pole, i think thats what i want/need?, i needed a relay to turn on and off from - 24vac,on the coil side-, 240v 35a on the main load , and with out spending silly money i could only find a 3 pole one cheap, thats 35 amps , all i need it to do is when activated by the 24v ac , allow the current of my 240v ac to pass to make the circuit, and that can be just the live or the live and neutral, etc etc if it can be done?, would wiring it so my live splits and goes in to all 3 poles and then out all 3 poles(when activated), to give more current, as its for my mig welder ,(24v trigger), so more amps the better, thank you

it is a - b does it right

Negative and positive units are incorrect here but despite this its quite good video

why is there a negative sign in the "negative change in potential energy"?

how E is constant

wah this guy knows everything🤨

16:17

So whats the formula for electric potential energy? I have one thst is kq1q2/r

thank u 3jan2020 6:42 pm

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is he saying coulomb oddly or am i dumb?

FINAL IS TOMMOROW

Can someone help me? The homeowner desires that a ceiling fan with light kits be installed in 5 different rooms. Each fan contains a light kit that can accomodate four 60-watt lamps. Each fan motor draws a current of 1.8 amperes when operated on high speed. It is assumed that each fan can operate more than three hours at a time and therefore must be considered a continuos-duty device. The fans are to be connected to a 15-ampere circuit. Because the devices are continuos duty, the circuit current must be limited to 80% of the continuos connected load. How many fans can be connected to a single 15-ampere circuit? I have an answet i just dont know if i did it correcltly 😅 TIA

Try getting a better mic. It will really help in increasing the quality of your videos. Cheers from a long time fan :)

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First view

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lol after almost an hour of note taking, i finally started HW problems just to realize the actual EPE formula is EPE = kq/r, which was mentioned NADA in this video, why?????

Negative& Positive sign concept here is not correct

Anyone 2024

what's wrong with this guy.