Solutions Manual Fundamentals of Electric Circuits 5th. Edition by Charles K. Alexander, Matthew N.O. Sadiku | Holooly

Electric Circuits

Fundamentals of Electric Circuits – Solutions Manual [EXP-484]

690 SOLVED PROBLEMS

(a) (5-j 6)-(2+j 8)/(-3+j 4)(5-j)+(4-j 6) (b) (240 ∠75° +160 ∠-30°)(60-j 80)/(67+j 84) (20 ∠32°) (c) (10+j 20/3+j 4)^2 √(10+j 5)(16-j 120)

Verified Answer:

(a)

\frac{3-\mathrm{jl} 4}{-7+\mathrm{jl} 7...

(a) Calculate current i in the Figure when the switch is in position 1. (b) Find the current when the switch is in position 2.

Verified Answer:

(a) i = 40/100 = 400 mA (b) i = 40/250 = 160 mA

Question: 9.79

(a) Calculate the phase shift of the circuit in Fig. 9.82. (b) State whether the phase shift is leading or lagging (output with respect to input). (c) Determine the magnitude of the output when the input is 120 V.

Verified Answer:

(a) Consider the circuit as shown.

\begi...

(a) Consider the Wheatstone bridge shown in the Figure. Calculate va, vb, and vab. (b) Rework part (a) if the ground is placed at a instead of o.

Verified Answer:

(a) Using voltage division,

{v}_{a}=\frac{1...

(a) Express v = 8 cos(7t = 15°) in sine form. (b) Convert i = -10 sin(3t – 85°) to cosine form

Verified Answer:

(a) v = 8 cos(7t + 15°) = 8 sin(7t + 15° + 90°) = ...

(a) Find the current I in the circuit of Figure (a). (b) An ammeter with an internal resistance of 1 Ω is inserted in the network to measure I^′ as shown in Figure (b). What is I^′? (c) Calculate the percent error introduced by the meter as | I- I^′/I | × 100 %

Verified Answer:

(a)

40 = 24 \parallel 60\Omega

, [la...

Question: 4.72

(a) For the circuit in Fig. 4.138, obtain the Thevenin equivalent at terminals a-b. (b) Calculate the current in RL = 8Ω. (c) Find RL for maximum power deliverable to RL. (d) Determine that maximum power.

Verified Answer:

Question: 6.59

(a) For two inductors in series as in Fig. 6.81(a), show that the current-division principle is v1= L1/L1+L2 vs, v2= L2/L1+L2 vs assuming that the initial conditions are zero. (b) For two inductors in parallel as in Fig. 6.81(b), show that the current-division principle is i1= L2/L1+L2 is,

Verified Answer:

(a)

\mathrm{v}_{\mathrm{s}}=\left(\mat...

(a) If the switch in Fig. 7.109 has been open for a long time and is closed at t = 0, find vo (t). (b) Suppose that the switch has been closed for a long time and is opened at t = 0. Find vo (t).

Verified Answer:

(a)

\mathrm{v}_{\mathrm{o}}(\mathrm{t})=\...

Question: 4.3

(a) In the circuit in Fig. 4.71, calculate v0 and I0 when vs = 1 V. (b) Find v0 and i0 when vs = 10 V. (c) What are v0 and I0 when each of the 1-Ω resistors is replaced by a 10-Ω resistor and vs = 10 V?

Verified Answer:

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