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Home ‣ Electrical Engineering ‣ Magnetism and Electromagnetism Comments
  • Question

  • A magnetic field is made up of flux lines.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • True 

    • Magnetism and Electromagnetism problems

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    • 1. Lenz's law defines the polarity of the induced voltage.

    • Options
    • A. True
    • B. False
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    • 2. Hysteresis is the number of lines of force per unit area in a magnetic field.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. Materials with a low retentivity do not retain a magnetic field very well.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. The tesla is the unit of magnetic flux.

    • Options
    • A. True
    • B. False
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    • 5. Ampere-turn is the unit of magnetomotive force (mmf).

    • Options
    • A. True
    • B. False
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    • 6. Reluctance in a magnetic circuit is analogous to current in an electrical circuit.

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    • A. True
    • B. False
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    • 7. Electromagnetic induction is the force that produces a magnetic field.

    • Options
    • A. True
    • B. False
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    • 8. Voltage leads current by 90° in a capacitor.

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    • A. True
    • B. False
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    • 9. The dielectric constant is the ability of a material to establish an electric field.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. Total parallel capacitance is less than that of the smallest capacitor in parallel.

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    • A. True
    • B. False
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