Consider a tightly wound $100$ turn coil of radius $10 \,cm$ carrying a current of $2 \,A$. The magnitude of the magnetic field at the centre of the coil is

  • A
    $3.14 \times 10^{-4} \,T$
  • B
    $6.28 \times 10^{-4} \,T$
  • C
    $12.56 \times 10^{-4} \,T$
  • D
    $0$

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