Physics - E&M: Ch 38.1 Voltage Potential Understood (1 of 24) What is Voltage? Conceptual

In this video I will explain the general concept of what is voltage. Voltage is potential which is electrical potential which is also known as EMF (electromotive force). It is a relative measure of how strongly a charge will be pushed away from or towards the location of the potential.

Next video in this series can be seen at:

[GenuinePeacefulTimes]

Excellent Video! Well explained and easy to understand.

[alanx]

If a charge is driven into a current by electric (static) forces and when the charge 'falls' through a (electro-static) potential difference (voltage), how is this energy conversion and consumption registered? When a meteor falls to earth, no gravitational field/energy is consumed, but energy is added to the object by the field without being consumed.

Maybe my questioning isn't very clear. How is voltage consumed so that we have to pay for energy when it adds kinetic energy to a charge?

[renatoberaldo]

5 years ago.... and I'm here again :) (just to confirm and improve my knowledge ) I love this video and series! )

[valeriereid]

Excellent. Thank you very much Professor.

[renatoberaldo]

Here we go again to another excelent course!!!!

[clashingallthetime]

Assume we have to positive plates opposite to each other, and there is a difference in voltage. How can a positive charge move through that area toward the less voltage? There must be electric field, and that means that the field here leaves a positive charge and ends at a "POSITIVE CHARGE"!!!

[tonyantonio]

I understand this now, thank you so much Micheal!

[tlnbeats]

Nuanced explanation, clarified up quite many things about voltage. Still, when you say electric force is proportional to voltage, do you mean force and voltage are equal? Many textbooks barely mention that voltage is essentially the same as electric force. So, when you say proportional, do you mean proportional, directly proportional, equal (=), or identical to (≡) ? I'm just very detailed-oriented, and would kindly like your opinion on that. Isn't voltage just electric potential at some point, and electric force E at that point is therefore the same as voltage, e.g. 100V aka 100N in the right hand diagram?

[bluewaters]

So how do you create this voltage ? You seem to imply it is measure of the force of the electric field experienced by a charge(say an electron) at a certain location. Does it mean that, if you want to create a strong electric field or electric potential or voltage, you put a bunch of electrons together by doing some work like a battery does. The more electrons you put together the stronger the electric field, the greater the volatge. Is this right.

[vahidy]

Sir I have a question in my mind, u are saying +sign potential as high potential, means the charge at this point has high energy, and -sign potential as lower potential, a charge has low energy at that point, but my question is isn't this high and low voltage that I mentioned above are only if we consider a positive point charge?. Shouldn't this concept not get reverse when we have negative point charge ?
I mean for negative charge, -sign potential must be higher . And + sign potential must be lower, ?
U mentioned that negative would go from lower to higher, is it Right to say?.
Plzz sir I'll be waiting for ur response..
And thanks for your efforts!