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Electricity & Magnetism

Electric circuits, Ohm's law, magnetic fields, electromagnetic induction

Sample Practice Questions

  1. The SI unit of magnetic flux is:

    • Tesla
    • Weber
    • Gauss
    • Henry
    Show answer

    Answer: Weber

  2. Magnetic field lines go from:

    • South to north outside
    • North to south outside the magnet
    • In random directions
    • Vertically only
    Show answer

    Answer: North to south outside the magnet

  3. Heating effect of current is used in:

    • Loudspeaker
    • Electric iron
    • LED
    • Fan
    Show answer

    Answer: Electric iron

  4. An MCB (Miniature Circuit Breaker) protects against:

    • Power failure
    • Overloading
    • Short circuit only
    • Voltage dips
    Show answer

    Answer: Overloading

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Practice Questions

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Frequently Asked Questions

What does Electricity & Magnetism cover in the NSO exam?

Electric circuits, Ohm's law, magnetic fields, electromagnetic induction.

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