Question

1. RL Circuits For the circuit in Figure 1, find the inductor voltage vit) if a) v(t) is the step function: 0 Vfor t<0 and 10 V for t>0. What is the time constant in this case? b) vs(t) 15 cos(100 t). You may use either the direct time-domain method, or use (complex) phasor method. 52 102 5mH L(t) Figure 1 2. Impedance You are given six black boxes, labelled "1" to ", each with two terminals. You are told that each black box contains two components and each box is configured differently. The six possible circuit configurations inside the boxes are shown in Figure 2 Figure 2. Note that identical resistors R, capacitors C and inductors L have been used in all the black boxes.

Answer 1

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0 OO L 10 3 20 e -о

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lojuoL ag

ohexe 4-〈하 NS 0, 28ヶ ぐ)-.ier -ene Sc SL SC

JuoL A スB SC Де SC SC

スF ズE

-c ス スA. 16.32ぐ90 Magnitude 아 자 6.32-2 ス

ス 2-00 1200 2.00

jtoc ud スE