A magnet is allowed to fall through a copper circular wire. Then during the fall:
Correct answer: A. the electric current flows through the wire
- A. the electric current flows through the wire
- B. the acceleration of the magnet is less than gravitational acceleration
- C. the acceleration of the magnet is equal to gravitational acceleration
- D. both A and B
Explanation
When a magnet falls through a copper circular wire, it induces an electromotive force (EMF) in the wire according to Faraday's law of electromagnetic induction. This induced EMF leads to the flow of electric current in the wire.
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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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