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Download Problem 7.42 In response to an input signal voltage υs(t
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Transcript
Problem 7.42 In response to an input signal voltage υs (t) = 24 cos 2000π t, the input current in the circuit of Fig. P7.42 was measured as i(t) = 6 cos(2000π t − 60◦ ) mA. Determine the equivalent input impedance Z of the circuit. i(t) + υs(t) _ a Z b Passive circuit Figure P7.42: Configuration for Problem 7.42. Solution: Vs = 24 V, ◦ I = 6e− j60 Z= = (mA). V I 24 × 10−3 6e− j60◦ ◦ = 4e j60 kΩ = (4 cos 60◦ + j4 sin 60◦ ) kΩ = (2 + j3.46) kΩ. All rights reserved. Do not reproduce or distribute. © 2016 National Technology and Science Press
