Two circular coils, each having 1000 turns and radius $\mathrm{R}=0.25 \mathrm{~m}$, are placed co-axially. Each coil is separated by a distance 1.0 m from the point P as shown in the figure. The coils carry equal currents 2.0 A in the same direction. An identical configuration of coils is placed perpendicular to the previous arrangement as shown in the figure. The magnitude of magnetic field at point P is closest to

• A

  $1.4 \times 10^{-4} \mathrm{~T}$
• B

  $3.0 \times 10^{-4} \mathrm{~T}$.
• Correct answer
  C

  $1.7 \times 10^{-4} \mathrm{~T}$
• D

  $0.7 \times 10^{-4} \mathrm{~T}$

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