A) \[\frac{{{\mu }_{0}}}{\pi }\]
B) \[\sqrt{3}\frac{{{\mu }_{0}}}{\pi }\]
C) \[\frac{{{\mu }_{0}}}{2\pi }\]
D) \[\frac{3{{\mu }_{0}}}{2\pi }\]
Correct Answer: C
Solution :
When the current flows in both wires in the same direction then magnetic field at half way due to the wire P, \[{{\vec{B}}_{p}}=\frac{{{\mu }_{0}}{{I}_{1}}}{2\pi \frac{5}{2}}=\frac{{{\mu }_{0}}{{I}_{1}}}{\pi \cdot 5}=\frac{{{\mu }_{0}}}{2\pi }\] \[(where\,\,{{I}_{1}}=5amp)\] The direction of \[{{\vec{B}}_{p}}\] is downward QYou need to login to perform this action.
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