Q.
Two straight long conductors AOB and, COD are perpendicular to each other and carry currents i1, and i2. The magnitude of the magnetic induction at a point P at a distance d from the point O in a direction perpendicular to the plane, ABCD is
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a
μ02πdi1+i2
b
μ04πdi1−i2
c
μ02πdi12+i221/2
d
μ02πdi1i2i1+i2
answer is C.
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Detailed Solution
Here point P is placed symmetrically with respect to two conductors. The magnetic fields due to the conductors are mutually perpendicular. Their resultant is given byμ02πdi12+i221/2
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