Electric Potential

Capacitors, voltage, energy, equipotentials, spark plug.

[isaiahpersad]

I know this was posted like 7 Years ago but these videos help me so much, Thank You!!!

[pam]

You’re seriously saving lives here !! Thank you 💗❤️

[gilbertvelez]

Your videos are by far the most concise archives of data on this subject I have ever found. I wish I'd known about your channel when you published this. It would have saved me a ton of headaches understanding electrodynamics. I've had your lectures playing in the background for days. You are the MAN!

[paulacardenas]

God, online classes are killing me, but you just revive me.

[blazetech]

Prof, I love you sketches. The way where you draw things with explanation is very clear.

[bhargavthoom]

This is amazing! I really like the idea of learning glass solutions and hope that this teaching style spreads to many different universities.

Thank you for posting Dr. A

[wayneyadams]

Great follow up questions at around time 56:00 would have been to ask:

1) What is the potential on the plates?
2) How does the capacitance change when the plates are moved farther apart?
3) How does E change when the plates are moved farther apart??
3) Does the potential change when the plates are moved farther apart?
4) Answer the same questions for the capacitor when the plates are moved closer together
Explain your answers for full credit.

Wayne Adams
B.S Chemistry (ACS Certified)
M.S. Physics
R&D Chemist 9 yrs.
Physics Instructor 33 yrs.

[kashishkarmshil]

I am well understood!! thanks for your awesome videos.... love u

[niroos]

i cant tell u how much this has helped me
all the concepts are crystal clear now
thank u so much for taking time to help us
be happy always

[darthkenobi]

I love when Doctor Strange teaching physics

[mrcrashspectra]

Absolutely GOATed teacher still 9 years later

[jegadeesan]

it is amazing that three micro coulomb charge can create such huge volts of 10*10^6.

[yassineseghrouchni]

Thank you sir I really enjoyed this lecture and the other electricity lectures

19:16 there is a typo delta(V) must be negative because the given work is positive.

[sandeepkamboj]

@ 19:40 potential of B is greater than A . but b/w them there is a negatively charged electron when it moves A to B it is going to accelerate and going to gain K.E and lose potential energy I think for the electron potential of A is greater than B .

[sam_oyeleye]

I have greatly enjoyed your video. Please do you have videos on diffraction, interference of waves, and young's double slit experiment

[wayneyadams]

It's pretty obvious he is not an auto mechanic. The distributor distributes the electricity to the various spark plugs. It has nothing to do with generating the high voltage. In the old days it was a rotating disk with an electrode that moved around making contact with electrodes that had wires connected to each spark plug. todays high tech cars use fancy electronics controlled by computers to control the distribution and timing of the spark. You may have seen old movies or TV shows where the villain reaches into a car engine and pulls off this cup shaped object with wires hanging from it, that is the distributor cap. Here is a picture of a typical distributor.

The high voltage was generated by a coil that was a step-up transformer, which is device that changes low voltage to high voltage, thus the name step-up. If you look at older engines you will see a large ceramic disk with two small wires attached and a thick wire coming out the center that is attached to the center of the distributor. Here is a picture of a typical ignition coil.

The spark plug wires are insulated, so touching the wire will not harm you, unless the wires are old and the insulation is damaged, then you might get a shock. It will not kill you, but it certainly hurts. . LOL Likewise, the connection to the spark plug is covered by an insulating material (called the boot), which is usually some kind of rubber compound or some other fancy synthetic, so that you cannot be shocked.

In my younger days, i used to build and drive race cars as a hobby, and I was shocked plenty of times. ;-))

[nalohuman]

Which book you follow? I am India and you content is very similar to ncert. But I still 😍 your lecture.

[CIDASANTOSOFICIAL]

OLHA EU AQUI VISITANDO SEU PERFIL QUERO TE PARABÉNIZAR PELO SEU LINDO TRABALHOS CONTINUI BRILHANDO GERAL NA TELINHA NOS TRAZENDO CONTEUDO DE QUALIDADE

[wayneyadams]

The fact that E is perpendicular to the equipotential surface at each point leads to a nifty experiment that allows the student to map E. It is a thin board that is coated with a graphite mixture. Two copper conducting surfaces are printed on it. They have various shapes, So one board has two points for dipoles. One has two two lines for parallel plates. One has a point and a plate, and so on.

The student connects a power supply set at about 6 volts to both points. A nine volt battery also works very well. There is a potential difference of 6 volts from one connection to the other. The student connects one lead of a voltmeter to the positive end, The other lead of the voltmeter is then touched to various points on the surface around the charged points, which measures the potential difference between that point and the positive charge. Equipotential lines can now be sketched by connecting points which have the same potential. Since E is perpendicular to equipotential lines, and proportional to the potential, the student can now draw in the E field. It is perpendicular to the equipotential line with a length that is proportional to the potential at that point.

If we just want the students to visualize the E field without regard to the strength, we can have them draw in continuous lines connecting one point to the next. That gives the students nice field lines connecting one charge to the other. If the students are careful they can get very good looking E field maps.

Wayne Adams
B.S Chemistry (ACS Certified)
M.S. Physics
R&D Chemist 9 yrs.
Physics Instructor 33 yrs.

[spurti]

Ohh the dipole reminds me of a bar magnet where in the north pole represents the positive charge and south pole also represents negative charge.