Magnetism and Capacitor Set 3

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Which is determined by BH curve?

  

    (A) The retentiveness of the material

    (B) The field intensity of the substance

    (C) The magnetic properties of the material

    (D) The pulling power of the magnetic material

The magnetic properties of the material

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Which force is required to demagnetise the residual magnetism in the hysteresis loop?

  

    (A) Electromotive force

    (B) Magneto motive force

    (C) Counter induced emf

    (D) Coercive force

Coercive force

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Which is the example for inductor?

  

    (A) Choke

    (B) Transformer

    (C) Buzzer

    (D) Electric bell

Choke

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Which law states whenever the magnetic flux is linked with a circuit changes an emf is always induced it?

  

    (A) Faraday's law of electromagnetic induction

    (B) Lenz law

    (C) Fleming left hand rule

    (D) Corkscrew rule

Faraday's law of electromagnetic induction

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What is unit of inductance?

  

    (A) Weber

    (B) Henry

    (C) Ampere turns

    (D) wb/m2

Henry

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