Find the time-domain expression correspon- ding to each phasor: 9.2 a) V = 18.6/-54° V. b) I = (20 /45° - 50 /-30°) mA. c) V = (20 + j80 – 30 /15°) V.
Find the time-domain expression correspon- ding to each phasor: 9.2 a) V = 18.6/-54° V. b) I = (20 /45° - 50 /-30°) mA. c) V = (20 + j80 – 30 /15°) V.
Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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KVL and KCL
KVL stands for Kirchhoff voltage law. KVL states that the total voltage drops around the loop in any closed electric circuit is equal to the sum of total voltage drop in the same closed loop.
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Science and technology incorporate some ideas and techniques of their own to understand a system skilfully and easily. These techniques are called conventions. For example: Sign conventions of mirrors are used to understand the phenomenon of reflection and refraction in an easier way.
Question
9.2
Transcribed Image Text:Find the time-domain expression correspon-
ding to each phasor:
9.2
a) V = 18.6/-54° V.
b) I = (20 /45° - 50 /-30°) mA.
c) V = (20 + j80 – 30 /15°) V.
Answer: (a) 18.6 cos (ot – 54°) V;
(b) 48.81 cos (wt + 126.68°) mA;
(c) 72.79 cos (wt + 97.08°) V.
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