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 B between the wires at a distance r from W1 is

Question

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 B between the wires at a distance r from W1 is

TuteeHUB · Accepted Answer

$\frac{{\mu _0^2{I^2}}}{{2\;\pi {r^2}}}$

TuteeHUB · Answer

$\frac{{{\mu _0}I}}{{6\;\pi r}}$

TuteeHUB · Answer

$\frac{{6{\mu _0}I}}{{5\;\pi r}}$

TuteeHUB · Answer

$\frac{{5{\mu _0}I}}{{6\;\pi r}}$

1.	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 B between the wires at a distance r from W1 is
A.	\(\frac{{{\mu _0}I}}{{6\;\pi r}}\)
B.	\(\frac{{6{\mu _0}I}}{{5\;\pi r}}\)
C.	\(\frac{{5{\mu _0}I}}{{6\;\pi r}}\)
D.	\(\frac{{\mu _0^2{I^2}}}{{2\;\pi {r^2}}}\)
Answer» D. \(\frac{{\mu _0^2{I^2}}}{{2\;\pi {r^2}}}\)

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 B between the wires at a distance r from W1 is

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