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Watch our favorite friend explain awesome things AGAIN!! Electric potential and potential difference. Part 1 https://www.youtube.com/watch?v=wT9AsY79f1k Part – 1 continued https://www.youtube.com/watch?v=Aq31mjWYdJ8 The work, W, done by the electric field, E, to move the charge a distance The charge in electric potential energy equals the negative work done by the electric field: The positive charge q has the greatest potential energy at point a, near the positive plate. The reverse is true for a negative charge: its potential energy is greatest near the negative plate Thus a positively charged object moves naturally from high potential to a low potential. A negative charge does the reverse. Now let’s talk about voltage and energy… Part 1 https://www.youtube.com/watch?v=LkIai_KXGxg Part 2 https://www.youtube.com/watch?v=NrpFMyVLSck Electric potential is given by symbol V. Electric potential is measured in volts (1 V= 1 J/C) and is sometimes referred to as voltage. If a positive test charge, q, has electric potential, PE, at some point a (relative to some zero potential energy), the electric potential, V, at this point is The difference in potential energy, PE(b) – PE(a), is equal to the negative of the work, W(ba), done by the electric field to move the charge from a to b; so the potential difference V(ab) is Joules is a very large unit to use when dealing with the small energies of electrons so a new unit is defined. Work kinetic energy theorem