Principles of Electric Circuits Electron Flow Version 9th. Edition by Thomas L. Floyd | 9780135073087 | 0135073081

Principles of Electric Circuits Electron Flow Version [EXP-40050]

346 SOLVED PROBLEMS

Question: 12.1

(a) A certain capacitor stores 50 microcoulombs (50 μC) with 10 V across its plates.What is its capacitance in units of microfarads?(b) A 2.2 μF capacitor has 100 V across its plates. How much charge does it store?(c) Determine the voltage across a 1000 pF capacitor that is storing 20 micro-coulombs (20 μC) of charge.

Verified Answer:

(a)

C=\frac{Q}{V}=\frac{50 \ \mu C}{10 \ V}=...

Question: 19.17

(a) Determine the frequency at which maximum power is transferred from the amplifier to the speaker in Figure 19-41(a).The amplifier and coupling capacitor are the source, and the speaker is the load, as shown in the equivalent circuit of Figure 19-41(b).(b) How many watts of power are delivered to

Verified Answer:

(a) When the power to the speaker is maximum, the ...

Question: 8.11

(a) Determine the Thevenin equivalent circuit for the circuit in Figure 8-37 viewed from terminals A and C. (b) Determine the Thevenin equivalent circuit for the circuit in Figure 8-37 viewed from terminals B and C.

Verified Answer:

(a)

V_{TH(AC)}= \left(\frac{R_{2}+ R_{3}}{R...

Question: 7.13

(a) Determine the unloaded output voltage of the voltage divider in Figure 7-30.(b) Find the loaded output voltages of the voltage divider in Figure 7-30 for the following two values of load resistance: RL = 10kΩ and RL = 100kΩ.

Verified Answer:

(a) The unloaded output voltage is

V_{OUT(u...

Question: 18.6

(a) In Figure 18-18, find the value of C so that Xc is approximately ten times less than R at an input frequency of 10 kHz.(b) If a 5 V sine wave with a dc level of 10 V is applied, what are the output voltage magnitude and the phase shift?

Verified Answer:

(a) Determine the value of C as follows:

X_...

Question: 15.1

(a) Locate the following points on the complex plane: 7,j 5; 5,—j2 ; —3.5,j 1; and -5.5 , —j6.5.(b) Determine the coordinates for each point in Figure 15-6.

Verified Answer:

(a) See Figure 15-7, (b) A: 2, j6 B: 11...

Question: 13.9

(a) The circuit in Figure 13-26 has a square wave input. What is the highest frequency that can be used and still observe the complete waveform across the inductor?(b) Assume the generator is set to the frequency determined in (a). Describe the voltage waveform across the resistor?

Verified Answer:

(a)

\tau =\frac{L}{R}=\frac{15 \ mH}{33 \ K...

Question: 8.13

(a) Write KVL around the left part of the circuit in Figure 8-46, Solve for IB, (b) Determine the current from the dependent current source. This cunenl is IC. (c) Calculate the output voltage and the power in the load resistor RL. (d) Compare the power determined in (c) with the power delivered to

Verified Answer:

(a)

V_{TH}- R_{TH}I_{B}- 0.7 \ V = 0

...

Question: 11.7

(a)Convert 60° to radians.(b)Convert π/6 rad to degrees.

Verified Answer:

(a) Rad=

\left(\frac{\pi \ rad}{180°} \righ...

Question: 20.8

A 10 V pulse with a width of 1 ms is applied to the RL integrator in Figure 20-38.Determine the voltage level that the output will reach during the pulse. If the source has an internal resistance of 30 Ω, how long will it take the output to decay to zero ? Draw the output voltage waveform.

Verified Answer:

The inductor charges through the 30 Ω source resis...