Analyze RL Circuit xC Chegg Study | Guided Sc .> clwww.webassign.net/web/Student

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Analyze RL Circuit xC Chegg Study | Guided Sc .> clwww.webassign.net/web/Student/Assignment-Responses/last?dep: 16479699 1. +-13 points My Notes Ask Your T Refer to the diagram. If R-7 kQ, L = 70 mH, and 40 kHz, find the magnitudes ofX1 and Zin kn, and the phase angle in degrees. 2. -6 points My Notes Ask Your Teach Refer to the diagram. If R-21 kn, L = 80 mH, and f= 49 kHz, find the magnitudes of XL and Zin kn, and the phase angle in degrees. Next, f E1-11.7 volts, find the magnitudes of VR and V in volts, and the current I in mA. VR = | !!! ^ 49) 11/13/2017 7:17 PM Type here to search

Explanation / Answer

(1) R = 7 k Ohm = 7000 ohm

L = 70 x 10^-3 H

f = 40 x 10^3 Hz

So, X(L) = w*L = 2*pi*f*L = 2*3.141*40 x 10^3*70 x 10^-3 = 17589.6 ohm = 17.59 k Ohm.

So, Z = sqrt{R^2 + X^2} = sqrt{7000^2 + 17589.6^2} = 18931 Ohm = 18.93 k Ohm.

phaser angle theta = tan^-1(R/X) = tan^-1(7000 / 17589.6) = 21.7 deg.

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