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Magnetics question

2021 · 17 Mar · Shift 1 · Q52
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  5. /2021 · 17 Mar · Shift 1 · Q52

Magnetics question

2021 · 17 Mar · Shift 1 · Q52

JEE MainPhysicsMagneticsMCQ+4 / −1
A solenoid of 1000 turns per metre has a core with relative permeability 500. Insulated windings of the solenoid carry an electric current of 5A. The magnetic flux density produced by the solenoid is : (permeability of free space = 4 π×\pi\timesπ× 10 −-− 7 H/m)
  1. A
    π\piπ T
  2. B
    2 ×\times× 10 −-− 3 π\piπ T
  3. C
    10 −-− 4 π\piπ T
  4. D
    π5{\pi \over 5}5π​ T
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