74. (a) With a phase constant of 45º the (net) reactance must equal the resistance in the circuit, which means the circuit impedance becomes Z = R2 ⇒R= Z/2 = 707 Ω. (b) Since f= 8000 Hz then ωd= 2π(8000) rad/s. The net reactance (which, as observed, must equal the resistance) is therefore XL– XC= ωdL– (ωdC)−1= 707 Ω. We are also told that the resonance frequency is 6000 Hz, which (by Eq. 31-4) means
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This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.