1.5 Assume that a 20 V voltage drop occurs across an element from terminal 2 to terminal 1 and that a current of 4 A enters terminal 2. a) Specify the values of v and i for the polarity references...


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1.5<br>Assume that a 20 V voltage drop occurs across<br>an element from terminal 2 to terminal 1 and<br>that a current of 4 A enters terminal 2.<br>a) Specify the values of v and i for the polarity<br>references shown in Fig. 1.6(a)-(d).<br>b) State whether the circuit inside the box is<br>absorbing or delivering power.<br>c) How much power is the circuit absorbing?<br>Answer: (a) Circuit 1.6(a): v = -20 V, i = -4 A;<br>circuit 1.6(b): v = -20 V, i = 4 A;<br>circuit 1.6(c): v = 20 V, i = -4 A;<br>circuit 1.6(d): v = 20 V, i = 4 A;<br>(b) absorbing;<br>(c) 80 W.<br>

Extracted text: 1.5 Assume that a 20 V voltage drop occurs across an element from terminal 2 to terminal 1 and that a current of 4 A enters terminal 2. a) Specify the values of v and i for the polarity references shown in Fig. 1.6(a)-(d). b) State whether the circuit inside the box is absorbing or delivering power. c) How much power is the circuit absorbing? Answer: (a) Circuit 1.6(a): v = -20 V, i = -4 A; circuit 1.6(b): v = -20 V, i = 4 A; circuit 1.6(c): v = 20 V, i = -4 A; circuit 1.6(d): v = 20 V, i = 4 A; (b) absorbing; (c) 80 W.
1.6 The voltage and current at the terminals of the<br>circuit element in Fig 1.5 are zero for t < 0. For<br>1 2 0, they are<br>v = 80,000te¬500r v.<br>i = 15te 500r A,<br>t 2 0;<br>t 2 0.<br>

Extracted text: 1.6 The voltage and current at the terminals of the circuit element in Fig 1.5 are zero for t < 0.="" for="" 1="" 2="" 0,="" they="" are="" v="80,000te¬500r" v.="" i="15te" 500r="" a,="" t="" 2="" 0;="" t="" 2="">

Jun 11, 2022
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