A changing electric field produces
Correct answer: C. Changing magnetic field
- A. emf
- B. Current
- C. Changing magnetic field
- D. None of these
Explanation
A changing electric field produces a changing magnetic field. This is one of the fundamental principles of electromagnetism, described by Maxwell's equations.Faraday's Law: This law states that a changing magnetic flux through a loop of wire induces an electromotive force (EMF) in the loop.Maxwell's Equations: Maxwell's equations unify electricity and magnetism, and they show that a changing electric field creates a magnetic field.Therefore, a changing electric field does not directly produce an EMF or current. It produces a changing magnetic field, which can then induce an EMF in a conductor.
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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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