Скачать или смотреть Electric Potential

Electric Potential or Electrostatic Potential
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Electric potential, also called electrostatic potential, is the amount of electric potential energy per unit charge at a point in an electric field. It tells us how much work would be needed to bring a small positive test charge from a reference point (usually infinity) to that point.

Electric potential (V) = Potential energy (U) divided by charge (q).
So, V = U / q

For a point charge Q, the electric potential at a distance r is:
V = k * Q / r
where k is Coulomb's constant (approximately 9 x 10⁹ Nm²/C²),
Q is the source charge,
and r is the distance from the charge.

Key Points:
Electric potential is a scalar quantity.
Its unit is the volt (V), where 1 volt equals 1 joule per coulomb.
A higher electric potential means more potential energy for a positive charge.
The electric field is related to electric potential: the electric field points in the direction where potential decreases most rapidly.

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