Question: If an electric field is given in a certain region by E, = 0, E, = 0, E-=kz, where k is a nonzero constant,

If an electric field is given in a certain region by E,

If an electric field is given in a certain region by E, = 0, E, = 0, E-=kz, where k is a nonzero constant, which of the following is true? A. There is a time-varying magnetic field. B. There is charge density in the region. C. The electric field cannot be constant in time. D. The electric field is impossible under any circumstances.

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