The transformer depends on the use of:
Correct answer: B. Alternating current
- A. Direct current
- B. Alternating current
- C. Direct and alternating current
- D. Direct and alternating voltage
Explanation
Transformers only work for alternating current, because you need a changing magnetic field. The size of the induced voltage depends on the number of turns on each coil - if there are less in the secondary coil, the voltage falls, and if there are more in the secondary coil, the voltage rises.
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About Electromagnetism
Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.
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