At resonance,
wL = 1/wC
L = 1/w^2 C
A)
L = 1/(8.5 x 10^6 x 2pi)^2 x 1.9 x 10^-11 = 1.85 x 10^-5 H
B)
L = 1/(3.1 x 10^6 x 2pi)^2 x 1.9 x 10^-11 = 1.39 x 10^-4 H
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