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The position of point from wire b where net magnetic field is zero due to following current distribution
magnetic field is is directly proportional to I/rTHen in first question5I/(6-x) = 2I/x5x = 12 – 2xx = 12/7 cm. RegardsArun
Suppose P is the point between the conductors where net magnetic field is zero.So at P |Magnetic field due to conductor 1| = |Magnetic field due to conductor 2|μ04π2(5i)i=μ04π2(2i)(6−x)⇒5x=96−x⇒x=307cmμ04π2(5i)i=μ04π2(2i)(6−x)⇒5x=96−x⇒x=30/7cmHence position from B=6−307=12/7cm
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