Faraday law states that the rate of change of magnetic flux is equal to:
Correct answer: A. Electromotive force
- A. Electromotive force
- B. Induced current
- C. Induced flux
- D. Induced magnetic field
Explanation
Faraday's law of induction states that the rate of change of magnetic flux is equal to the induced electromotive force (EMF). The induced EMF is the voltage that is produced in a circuit by a changing magnetic field.The mathematical expression for Faraday's law is:ε = -dΦB/dt where:ε is the induced EMF in voltsΦB is the magnetic flux in webersd/dt is the rate of change with respect to timeThe negative sign in the equation means that the induced EMF is in the direction that opposes the change in magnetic flux.The induced EMF can cause an induced current to flow in the circuit. The magnitude of the induced current is proportional to the induced EMF.The induced magnetic field is the magnetic field that is produced by the induced current. The magnitude of the induced magnetic field is proportional to the induced current.So, the answer is electromotive force.
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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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