IMathAS-libretexts

A metal spring has its ends attached so that it forms a circle. It is placed in a uniform magnetic field, as shown above. Which of the following will NOT cause a current to be induced in the spring?

Moving the spring parallel to the magnetic field
Changing the magnitude of the magnetic field
Increasing the diameter of the circle by stretching the spring
Rotating the spring about a diameter
Moving the spring in and out of the magnetic field

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