APFIVE Mutual Inductance of Coaxial Loops
Two circular loops of wire with radii r₁ and r₂ are coaxial and parallel, separated by a distance d that is much larger than either radius. The first loop carries a current I that is changing at a rate dI/dt. What is the mutual inductance M between the loops?
A
(μ₀πr₁²r₂²)/(2d³)
B
(μ₀π(r₁+r₂)²)/(2d³)
C
(μ₀πr₁²r₂²)/(2d²)
D
(μ₀πr₁r₂)/(2d)
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