Lec 13- Electric potential Due to a Electric Dipole || Electricity & magnetism
Автор: The Base Academy
Загружено: 2020-12-09
Просмотров: 37719
Описание:
An electric potential is the amount of work needed to move a unit positive charge from a reference point to a specific point inside an electric field without producing acceleration. A dipole is a pair of opposite charges with equal magnitudes separated by a distance, d.
The electric potential is a scalar field whose gradient becomes the electrostatic vector field. Since it is a scalar field, it is easy to find the potential due to a system of charges. It is the summation of the electric potentials at a point due to individual charges.
Notice that the potential falls off by r2 while the electric field falls off by r3. Also note that when the angle is 90 degrees, the point P is equidistant to both charges and the electric potential is zero. When θ 90⁰, the potential is negative because the point P is closer to the negative charge.
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