A ferromagnet will become fully magnetized at_________________?
Correct answer: C. Alternating current at its peak value
- A. High voltage A.C
- B. Low voltage A.C
- C. Alternating current at its peak value
- D. D.C current at peak value
Explanation
For an alternating magnetizing current, the magnetic field reaches its greatest value when the current is at its peak, allowing a ferromagnet to reach magnetic saturation. Low-voltage AC, the likely mistaken choice, is not the deciding condition because magnetization depends on the magnetizing field or current, not voltage alone.
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About Magnetic Flux Density
Magnetic flux density measures the magnetic force acting on a current carrying conductor or moving charge in a magnetic field. Work includes the relations B equals F divided by IL and F equals qvB, the tesla as its SI unit, field direction and the distinction between flux density and magnetic flux.
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