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A solenoid of length 0.5 m has a radius of 0.1cm and is made up of 500 turns. It carries a current of 5A The magnitude of magnetic field inside the solenoid is :-

A

3.14 × 10⁻³ T

B

6.28 × 10⁻³ T

C

9.42 × 10⁻³ T

D

None of these

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