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Electro-Magnetism — Physics STD 10 — Question

ICSE BoardEnglish MediumSTD 10PhysicsElectro-Magnetism1 Mark
MCQ
Between the pole components of a horse-shoe magnet, a flat rectangular coil is turned. The e.m.f changes direction in which position of the coil with respect to the magnetic field?
  • A
    If the plane of coil and the magnetic field is parallel.
  • ✓
    When the plane of the coil passes from the position normal to the magnetic field.
  • C
    If the plane of coil and the magnetic field is perpendicular
  • D
    None of the above.
✓

Answer

Correct option: B.
When the plane of the coil passes from the position normal to the magnetic field.
(b)
When the plane of the coil passes from the position normal to the magnetic field.
Explanation:
When the plane of the coil moves from normal to the magnetic field, the e.m.f. will changes direction. If the plane of coil and the magnetic field is parallel, the e.m.f. will be maximum and if they are perpendicular the e.m.f. will be minimum (0).

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