Answer: induced current.
- A induced current
- B ordinary direct current
- C static charge
- D displacement current
Correct answer: A. induced current
Explanation: Such a current, driven by an induced EMF, is called an induced current.
As a magnet approaches a coil, flux rises steadily and a constant non-zero EMF is induced (Faraday's law). Once the magnet stops moving, flux stays constant and the induced EMF drops to zero - EMF only exists while flux is actively changing.
Concept context
Faraday's and Lenz's laws, motional EMF, self/mutual inductance, eddy currents, and the AC generator - how a changing magnetic flux creates an electric current.