The unit of magnetisation is _____________. 

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RPF Constable 2024 Official Paper (Held On 02 Mar, 2025 Shift 2)
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  1. weber
  2. ampere/metre 
  3. tesla
  4. weber/metre

Answer (Detailed Solution Below)

Option 2 : ampere/metre 
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Detailed Solution

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The correct answer is ampere/metre.

Key Points

  • The unit of magnetisation in the International System of Units (SI) is ampere per metre (A/m).
  • Magnetisation describes the magnetic moment per unit volume of a material.
  • It is represented by the symbol 'M'.
  • Magnetisation is a vector quantity and has both magnitude and direction.

Additional Information

  • Magnetic Moment
    • The magnetic moment is a measure of the strength and direction of a magnetic source.
    • It is typically measured in units of A·m² (ampere square meters).
  • Magnetic Field
    • A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials.
    • It is measured in teslas (T) in the SI system.
  • Magnetic Susceptibility
    • It is a measure of how much a material will become magnetised in an applied magnetic field.
    • It is a dimensionless quantity.
  • Magnetic Flux
    • Magnetic flux is the measure of the quantity of magnetism, considering the strength and extent of a magnetic field.
    • It is measured in webers (Wb).

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