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Electromagnetic Induction — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsElectromagnetic Induction1 Mark
MCQ
Which of the following best describe the electromagnetic induction?
  • ✓
    The ability of a changing magnetic field to induce a voltage in a conductor
  • B
    The ability of a conductor to generate a magnetic field
  • C
    The ability of a static magnetic field to induce a voltage in a conductor
  • D
    The ability of a permanent magnet to induce a voltage in a coil
✓

Answer

Correct option: A.
The ability of a changing magnetic field to induce a voltage in a conductor
Electromagnetic induction is a process where a conductor placed in a changing magnetic field $($or a conductor moving through a stationary magnetic field$)$ causes the production of a voltage across the conductor. Changing magnetic field causes a change in flux which gives rise to induced emf. Also, a moving rod in a uniform magnetic field would mean moving electrons in a magnetic field which would exert force on them to move in a particular direction in the rod, thus creating a potential difference across ends.

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