A solenoid of 1000 turns per metre has a core of material with relative permeability 400. The windings of the solenoid are insulated from the core and a current of 2 A is passed through the solenoid. Then the value of the magnetic intensity inside the solenoid is

• Correct answer
  A

  $2 \times 10^3 \mathrm{Am}^{-1}$
• B

  $1.0 \mathrm{Am}^{-1}$
• C

  $8 \times 10^5 \mathrm{Am}^{-1}$
• D

  $794 \mathrm{Am}^{-1}$

Hence, the correct answer is option: 'A'.