\(\therefore \quad F_{B C}=F_{A B}=\frac{\mu_{0} I^{2} l}{2 \pi d}\)
As, \(\vec{F}_{A B} \perp \vec{F}_{B C}\) net force on wire \(B\)
\(F_{\text {net }}=\sqrt{2} F_{B C}=\frac{\sqrt{2} \mu_{o} I^{2} l}{2 \pi d}\)
\(F_{\text {net }}=\frac{\mu_{o} I^{2} l}{\sqrt{2} \pi d}\) or \(\frac{F_{\text {net }}}{l}=\frac{\mu_{o} I^{2}}{\sqrt{2} \pi d}\)
[મુક્તાવકાશ માટે પારગમ્યતા $4 \pi \times 10^{-7}$ $SI$ એકમ લો]