Question

Eddy currents are produced in a metallic conductor when

• A. The magnetic flux linked with it changes
• B. It is placed in a changing magnetic field.
• C. It is placed in a magnetic field.
• D. Both A and B

Answer 1

Answer: (D)

Both A and B

Eddy currents are produced when the magnetic flux passing through the metal object continuously changes. This may happen due to many reasons:
1) The object is placed in a region with changing magnetic field.
2) The object continuously moves in and out of the magnetic field region (may be uniform or non uniform).