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单词 Electric moment
释义

Electric moment

英语百科

Electric dipole moment

Animation showing the electric field of an electric dipole. The dipole consists of two point electric charges of opposite polarity located close together. A transformation from a point-shaped dipole to a finite-size electric dipole is shown.A molecule of water is polar because of the unequal sharing of its electrons in a
Electric dipole p and its torque τ in a uniform E field.
An electric dipole potential map. In blue negative potentials while in red positive ones.

In physics, the electric dipole moment is a measure of the separation of positive and negative electrical charges in a system of electric charges, that is, a measure of the charge system's overall polarity. The SI units are Coulomb-meter (C m), however the most commonly used unit is the Debye (D). The electric field strength of the dipole is proportional to the magnitude of dipole moment.

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更新时间:2025/6/22 16:54:44