The induced electric field
The induced electric field "circulates" around the changing magnetic flux. In particular, there is no induced electric field at any instant of time unless the flux is changing at that instant of time. In fact, there can even be an induced electric field when the magnetic flux is zero, provided that the flux is changing. The red bar in the movie indicates the strength and direction of the induced electric field (upward bar for clockwise field).Try to understand the direction of the induced electric field from the right-hand-rule relation connecting the direction you integrate around the closed loop and the direction of the positve normal to the loop.
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