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NEET PHYSICSEasy

In which of the following systems of units is the Weber the unit of magnetic flux?

A

CGS

B

MKS

C

SI

D

None of these

Step-by-Step Solution

  1. Identify the Physical Quantity: The question asks about the unit of magnetic flux.
  2. Consult Standard Tables: According to the SI system (Systeme Internationale d'Unites), the unit of magnetic flux is the weber (symbol: Wb). It is defined as 1 Wb=1 T⋅m21 \text{ Wb} = 1 \text{ T} \cdot \text{m}^2 (Tesla meter squared) or 1 V⋅s1 \text{ V} \cdot \text{s} (Volt second).
  3. Compare with other systems:
  • In the CGS (Centimetre-Gram-Second) system, the unit of magnetic flux is the maxwell (Mx).
  • The MKS (Metre-Kilogram-Second) system is the precursor to the SI system, and while the units are compatible, 'Weber' is formally recognised as a special name for the derived unit in the SI system.
  1. Conclusion: Weber is the SI unit of magnetic flux.
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