Two long parallel wires situated at a distance \( 2 a \) are carrying equal current ' \( i \) ' ....

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Two long parallel wires situated at a distance \( 2 a \) are
\( \mathrm{P} \)
carrying equal current ' \( i \) ' in opposite direction as
W
shown in figure. The value of magnetic field at a point \( \mathrm{P} \) situated at equal distances from both the wires will be:
(1) \( \frac{\mu_{0} i a}{\pi r} \)
(2) \( \frac{\mu_{0} i a^{2}}{\pi r} \)
(3) \( \frac{\mu_{0} i a^{2}}{\pi r^{2}} \)
(4) \( \frac{\mu_{0} i a}{\pi r^{2}} \)


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