Thread: Induced electric field View Single Post
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 Quote by Meir Achuz A time varying magnetic field will have time varying vector potential $$\frac{\partial{\bf A}}{\partial t}$$ that can exist beyond the field, and induce an E field.
Only in areas where there is a changing magnetic field.

 Quote by elfmotat However, (assuming ∂B/∂t isn't zero) the electric field induced will also be nonzero outside of the solenoid.
∂B/∂t ≠ 0 implies that there is a magnetic field (apart from some specific points in time maybe).