Dictionary:Electric field

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A spatial vector quantity equal to a potential gradient, produced by charged bodies or a time-varying magnetic field. Unit is volts per meter. The electric field induced in a loop equals the negative time derivative of the magnetic flux cutting the loop ( is a length element of the loop):

It is also expressed in terms of the change in the magnetic induction with time :

<math>\nabla \times {\mathbf E } = - \frac{\partial {\mathbf B }}{\partial t}.