At what distance for a long straight wire carrying a current of $12\, A$ will the magnetic field be equal to $3 \times 10^{-5} Wb / m ^{2}$ ?
At what distance for a long straight wire carrying a current of $12\, A$ will the magnetic field be equal to $3 \times 10^{-5} Wb / m ^{2}$ ?
- [AIIMS 2019]
- A
$8 \times 10^{-2} m$
- B
$12 \times 10^{-2} m$
- C
$18 \times 10^{-2} m$
- D
$24 \times 10^{-2} m$
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