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This question belongs to Electronics And Communications Engineering Electromagnetic Field Theory

Electromagnetic Field Theory

?

Two identical copper wires W₁ and W₂ placed in parallel as shown in the figure, carry currents I and 2I, respectively, in opposite directions. If the two wires are separated by a distance of 4r, then the magnitude of the magnetic field \[\overrightarrow B \] between the wires at a distance r from W₁ is

A) \[\frac{{\mu _0^2{I^2}}}{{2\pi {r^2}}}\] B) \[\frac{{6{\mu _0}I}}{{5\pi r}}\] C) \[\frac{{{\mu _0}I}}{{6\pi r}}\] D) \[\frac{{5{\mu _0}I}}{{6\pi r}}\]

Answer & Solution

Correct Answer: Option D

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