Magnetic field in parallel wires is given by B=2πdμ0I
At midway, distance=2d
∵22πdμ0I×2=B
⇒πμ0×d2I=B
⇒0.084×10−7×2I=300×10−6
⇒I=2×4×10−73×10−4×0.08=30A
As Bnet=0, so the wires are carrying current in opposite direction.
Two long current carrying conductors are placed parallel to each other at a distance of 8cm between them. The magnitude of magnetic field produced at mid-point between the two conductors due to current flowing in them is 300μT. The equal current flowing in the two conductors is :
Held on 29 Jun 2022 · Verified 6 Jul 2026.
30A in the same direction.
60A in the opposite direction.
30A in the opposite direction.
300A in the opposite direction.
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