Fundamentals of Electric Circuits
6th Edition
ISBN: 9780078028229
Author: Charles K Alexander, Matthew Sadiku
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 1.7, Problem 8PP
If an electron beam in a TV picture tube carries 10 13 electrons/second and is passing through plates maintained at a potential difference of 30 kV, calculate the power in the beam.
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Students have asked these similar questions
Q2:
(30 Marks)
Design a DC/DC converter that produce output waveforms that shown in figures below from a
fixed DC source of 20 volts.
Vo (Volt)
14.1
IL (Amp)
13.9
2.25
1.75
† (msec)
Output voltage
0.18
0.2
t (msec)
L
0.214 0.22
Output current
6. Build the circuit shown in Figure 2 below in PSpice. Note that the power supply V1 is a
VSIN power supply in the SOURCE library. Vcc is a VDC supply found in the SOURCE
library. Model this circuit using the Time Domain (Transient) Analysis Type with a Run To
Time of 2 ms.
A. Paste your output graph showing the voltage at the base terminal, collector terminal
and at the load.
B. What is the voltage gain of the circuit? (Compare the voltage amplitude at the base
terminal input (across Rb2) to that at the collector terminal.
C. What happens to the output voltage at the collector terminal if the value of Rb1 is
reduced by a factor of 10 (to 14.7 kn)? Simulate this situation and explain the result.
D. What happens to the output voltage at the collector terminal if the value of Rb1 is
increased by a factor of 3 (to 441 k)? Simulate this situation and explain the result.
Rb1
RC
147k
1k
C2
C1
Q1
Vcc
1u
VOFF = 0
Q2N3904
10Vdc
VAMPL = 0.1V1
1u
FREQ = 2k
R_load
Rb2
Re
AC = 0
250
40k
20
Figure…
The input reactance of 1/2 dipole with radius of 1/30 is given as shown in figure below,
Assuming the wire of dipole is conductor 5.6*107
S/m, determine at f=1 GHz the
a-Loss resistance, b- Radiation efficiency
c-Reflection efficiency when the antenna is
connected to T.L shown in the figure.
Rr
Ro= 50 2
1/4
RL
-j100
[In(l/a) - 1.5]
tan(ẞl)
Chapter 1 Solutions
Fundamentals of Electric Circuits
Ch. 1.3 - Calculate the amount of charge represented by...Ch. 1.3 - Prob. 2PPCh. 1.3 - The current flowing through an element is i= 4A...Ch. 1.5 - To move charge q from point b to point a requires...Ch. 1.5 - Find the power delivered to the element in Example...Ch. 1.5 - A home electric heater draws 10 A when connected...Ch. 1.6 - Figure 1.16 For Practice Prob. 1.7 Compute the...Ch. 1.7 - If an electron beam in a TV picture tube carries...Ch. 1.7 - Referring to the residential rate schedule in...Ch. 1 - One millivolt is one millionth of a volt. (a) True...
Ch. 1 - The prefix micro stands for: (a) 106 (b) 103 (c)...Ch. 1 - The voltage 2.000,000 V can be expressed in powers...Ch. 1 - A charge of 2 C flowing past a given point each...Ch. 1 - The unit of current is: (a) coulomb (b) ampere (c)...Ch. 1 - Voltage is measured in: (a) watts (b) amperes (c)...Ch. 1 - Prob. 7RQCh. 1 - The voltage across a 1.1-kW toaster that produces...Ch. 1 - Which of these is not an electrical quantity? (a)...Ch. 1 - The dependent source in Fig. 1.22 is: (a)...Ch. 1 - How much charge is represented by these number of...Ch. 1 - Determine the current flowing through an element...Ch. 1 - Find the charge q(t) flowing through a device if...Ch. 1 - A total charge of 300 C flows past a given cross...Ch. 1 - Prob. 5PCh. 1 - The charge entering a certain element is shown in...Ch. 1 - The charge flowing in a wire is plotted in Fig....Ch. 1 - Prob. 8PCh. 1 - The current through an element is shown in (a) t =...Ch. 1 - A lightning bolt with 10 kA strikes an object for...Ch. 1 - A rechargeable flashlight battery is capable of...Ch. 1 - The charge entering the positive terminal of an...Ch. 1 - The voltage v(t) across a device and the current...Ch. 1 - The current entering the positive terminal of a...Ch. 1 - Prob. 16PCh. 1 - Figure 1.28 shows a circuit with four elements, p1...Ch. 1 - Find the power absorbed by each of the elements in...Ch. 1 - Find I and the power absorbed by each element in...Ch. 1 - Find Vo and the power absorbed by each element in...Ch. 1 - A 60-W incandescent bulb operates at 120 V. How...Ch. 1 - Prob. 22PCh. 1 - A 1.8-kW electric heater takes 15 min to boil a...Ch. 1 - A utility company charges 8.2 cents/kWh. If a...Ch. 1 - A 1.2-kW toaster takes roughly 4 minutes to heat...Ch. 1 - A cell phone battery is rated at 3.85 V and can...Ch. 1 - A constant current of 3 A for 4 hours is required...Ch. 1 - A 150-W incandescent outdoor lamp is connected to...Ch. 1 - An electric stove with four burners and an oven is...Ch. 1 - Reliant Energy (the electric company in Houston,...Ch. 1 - In a household, a business is run for an average...Ch. 1 - A telephone wire has a current of 20 A flowing...Ch. 1 - A lightning bolt carried a current of 2 kA and...Ch. 1 - Figure 1.32 shows the power consumption of a...Ch. 1 - The graph in Fig. 1.33 represents the power drawn...Ch. 1 - A battery can be rated in ampere-hours (Ah) or...Ch. 1 - A total of 2 MJ are delivered to an automobile...Ch. 1 - How much energy does a 10-hp motor deliver in 30...Ch. 1 - A 600-W TV receiver is turned on for 4 h with...
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