The mutual inductance between two planar concentric rings of radii r1 and r2 (r1 > r2) placed in air is given by:
A. \(\frac{\mu_{0} \pi r_{1}^{2}}{2 r_{2}}\)
B. \(\frac{\mu_{0} \pi r_{2}^{2}}{2 r_{1}}\)
C. \(\frac{\mu_{0} \pi r_{2}}{r_{1}}\)
D. \(\frac{\mu_{0} \pi}{2} \sqrt{\frac{r_{1}}{r_{2}}}\)
Answer:B
The mutual inductance between two planar concentric rings of radii r1 and r2 (r1 > r2) placed in air is given by:
A. \(\frac{\mu_{0} \pi r_{1}^{2}}{2 r_{2}}\) B. \(\frac{\mu_{0} \pi r_{2}^{2}}{2 r_{1}}\) C. \(\frac{\mu_{0} \pi r_{2}}{r_{1}}\) D. \(\frac{\mu_{0} \pi}{2} \sqrt{\frac{r_{1}}{r_{2}}}\)