Electrical Engineering: Principles & Applications 6th Edition solutions

Electrical Engineering: Principles & Applications 6
Solve for the steady-state values of i1, i2, i3, i4, and vC for the circuit shown in Figure P4.23, after the switch has been closed for a long time. 100 V 1 k vC 100 mF 1 H 500 1 k + + i4 i1 i3 i2 Figure P4.23

Electrical Engineering: Principles & Applications 6
Use KCL to find the values of ia, ic, and id for the circuit of Figure P1.32. Which elements are connected in series in this circuit? A C D B ia ic id ie = 1 A E ib = 2 A 3 A Figure P1.32

Electrical Engineering: Principles & Applications 6
The circuit element shown in Figure P1.15 has v = 15 V and i = 3 A.What are the values of vbaand iba? Be sure to give the correct algebraic signs. Is energy being delivered to the element or taken from it? i a b v Figure P1.15

Electrical Engineering: Principles & Applications 6
Reduce each of the networks shown in Figure P2.1 to a single equivalent resistance by combining resistances in series and parallel. (a) 3 7 30 24 3 4 12 (b) 10 5 24 60 6 6 15 9 Figure P2.1

Electrical Engineering: Principles & Applications 6
Consider the circuit shown in Figure P1.68. Find the current iR flowing through the resistor. Find the power for each element in the circuit. Which elements are absorbing energy? 4A 12 V 8 iR + Figure P1.68

Electrical Engineering: Principles & Applications 6
A worker is standing on a wet concrete floor, holding an electric drill having a metallic case. The metallic case is connected through the ground wire of a three-terminal power outlet to power-system ground. The resistance of the ground wire is Rg. The resistance of the workers body is Rw = 500 . Due

Electrical Engineering: Principles & Applications 6
Solve for the node voltages shown in Figure P2.53. Then, find the value of is.

Electrical Engineering: Principles & Applications 6
Write equations and solve for the node voltages shown in Figure P2.49. Then, find the value of i1.

Electrical Engineering: Principles & Applications 6
Solve for the node voltage shown in Figure P5.53. 20 90 10 V V V1 j5 +j10 + + I1 I2 10 0 Figure P5.53

Electrical Engineering: Principles & Applications 6
Use mesh-current analysis to find the values of i1 and i2 in Figure P2.29. First, select iA clockwise around the left-hand mesh and iB clockwise around the right-hand mesh. After solving for the mesh currents, iA and iB, determine the values of i1 and i2.

Electrical Engineering: Principles & Applications 6
Compute the power for each element shown in Figure P1.21. For each element, state whether energy is being absorbed by the element or supplied by it. ia va + va = 15 V ia = 2 A (a) (b) (c) vDE = 20 V iED = 3 A D E ib vb = 10 V ib = 3 A vb Figure P1.21

Electrical Engineering: Principles & Applications 6
Solve for the node voltages shown in Figure P2.50. What are the new values of the node voltages after the direction of the current source is reversed? How are the values related?

Electrical Engineering: Principles & Applications 6
Find IDQ and VDSQ for the circuit shown in Figure P12.33. The MOSFET has Vto = 1 V and K = 0.5 mA/V2. 4 k RD R2 100 k R1 150 k + 5 V Figure P12.33

Electrical Engineering: Principles & Applications 6
Find the equivalent resistance between terminals a and b for each of the networks shown in Figure P2.8.

Electrical Engineering: Principles & Applications 6
Use the current-division principle to calculate the value of i3 in Figure P2.39. R2 = 25 R1 = 100 30 mA R3 = 50 i3 i2 Figure P2.39

Electrical Engineering: Principles & Applications 6
Determine the values of i1 and i2 in Figure P2.29. i2 i1 i3 v2 + 2 4 7 18 30 V + Figure P2.29

Electrical Engineering: Principles & Applications 6
Find the equivalent resistance looking into terminals a and b in Figure P2.4.

Electrical Engineering: Principles & Applications 6
. The current through a 0.5-F capacitor is shown in Figure P3.14. At t = 0, the voltage is zero. Sketch the voltage, power, and stored energy to scale versus time. v(t) + i(t) C = 0.5 mF (a) (b) i(t) (mA) t (ms) 2 20 20 3 5 Figure P3.14

Electrical Engineering: Principles & Applications 6
Figure P1.74 is the electrical model for an electronic megaphone, in which the 16- resistance models a loudspeaker, the source Ix and the 5- resistance represent a microphone, and the remaining elements model an amplifier. What is the name of the type of controlled source shown? Given that the power

Electrical Engineering: Principles & Applications 6
Determine the value of i1 in Figure P2.54 using node voltages to solve the circuit. Select the location of the reference node to minimize the number of unknown node voltages. What effect does the 17- resistance have on the answer? Explain.