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  • Two long current carrying conductors are placed parallel to each other at a distance of 8 cm between them. The magnitude of magnetic field produced at mid-point between the two conductors due to cu

Two long current carrying conductors are placed parallel to each other at a distance of 8 cm between them. The magnitude of magnetic field produced at mid-point between the two conductors due to current flowing in them is \mathrm{300 \; \mu T}. The equal current flowing in the two conductors is :

Option: 1

30A in the same direction.


Option: 2

30A in the opposite direction.


Option: 3

60A in the opposite direction.


Option: 4

300A in the opposite direction.


Answers (1)

best_answer

As \text { Bnet } \neq 0 so currents are in the opposite direction

\mathrm{\frac{\mu_oi}{2\pi\times4cm} \times 2=30 \times 10^{-6}} \\

\\ \mathrm{\mathrm{i}=\frac{30 \times 10^{-6} \times 2 \pi \times 4 \times 10^{-2}}{2 \times 4 \pi \times 10^{-7}}} \\

\mathrm{i=30 \mathrm{~A}}

Hence the correct option is 2

Posted by

rishi.raj

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