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NEETPhysicsElectromagnetic Induction

Choose the correct options (a) SI unit of magnetic flux is henry-ampere (b) SI unit of coefficient of self-induction is J/A (c) SI unit of coefficient of self induction is ( volt - second ampere ) (d) SI unit of magnetic induction is weber

Options

  1. Aonly (a)
  2. Bonly (b)
  3. C(a) and (c)
  4. D(b) and (d)

Correct answer

C. (a) and (c)

Step-by-step solution

a) SI unit of magnetic flux is henry-ampere: - Magnetic flux ( ) is defined as (B A ) (Magnetic field Area), with the SI unit of Weber (Wb). - Alternatively, from Flux = (L I ) (Inductance ( ) Current), the unit would be Henry ( ) Ampere ( ( H ^ ~A )). - Since Weber is equivalent to Henry-Ampere, this statement is Correct. b) Sl unit of coefficient of self-induction is J/A: - Coefficient of self-induction (L) has the Sl unit of Henry (H). - Energy stored in an inductor is (U=(1 / 2) L I² ). So, ( L =2 U / I ² ). -

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