|Dec20-09, 02:07 AM||#1|
Inductance of the coil??
1. The problem statement, all variables and given/known data
A radio has a tuning circuit consisting of a variable capacitor and antenna coil. IF the circuit has a maximum current when C=300pF and f=40kHz, what's the inductance of the coil??
2. Relevant equations
f= 1/(2pi root (LC))
3. The attempt at a solution
L=[1/(2pi(40000))]^2 times 1/(300E-12)
But, I didn't get the answer :52.8x 10^3 was the answer;;
|Dec20-09, 02:16 AM||#2|
The right answer is 52.8x10^(-3) H.
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