Chapter 31 practice Problems
1) 31.21. A wire of radius 1.0 mm carries a current of 21.0 A. The wire is connected to a
parallel plate capacitor with circular plates of radius R = 3.1 cm and a separation between
the plates of s = 2.0 mm. What is the magnit
Chapter 29 Class Problem Solution
1. 29.27. THINK: The current in the outer loop generates a magnetic field. Because the
magnitude of the current in the outer loop changes with time, the magnetic field it generates
also changes. The changing magnetic fiel
Chapter 30 practice Problems
1) 30.27. A 18-F capacitor is fully charged by a 12-V battery and is then disconnected from the
battery and allowed to discharge through a 0.9-H inductor. Find the first three times when (the
magnitude of) the charge on the ca
Chapter 29 Class Problem
1. 29.27. A circular conducting loop with radius a and resistance R2 is concentric with a circular
conducting loop with radius b a (b much greater than a) and resistance R1. A time-dependent
voltage is applied to the larger loop,
Class Problems Chapter 26
26.26. Find the equivalent resistance for the circuit in the figure. (Use the following as necessary:
Vemf, R.)
26.27. The dead battery of your car provides a potential difference of 9.630 V and has an internal
resistance of 1.15
Class Problem Direct Current
25.28. A copper wire has a diameter dCu = 0.0470 cm, is 3.00 m long, and has a density of charge
carriers of 8.50 x1028 electrons/m3. As shown in the figure, the copper wire is attached to an
equal length of aluminum wire with
Practice problems Chapter 27 Solution
1) 27.26.
35
r
B 0.040 T B,
(perpendicular to r ),
r
v 4.0 5 m/s v, vx v sin v
10
B
vy v cos vP
(parallel to r ).
B
(a)
(b) The time it takes to travel
t
9.1 31 kg 4.0 105 m/s sin35
10
mv
r
3.3 5 m
10
19
qB
1.602
1
Problems for Chapter 27
1. Determine the force on a semicircular wire with current I in the presence of a field B.
2. An electron with a speed of 3.8 105 m/s enters a uniform magnetic field of magnitude
0.053 T at an angle of 35 to the magnetic field line
Chapter 32 practice Problems
1) A single concave spherical mirror is used to create an image of a source 6.80 cm tall that
is located at position x = 0 cm which is xo = 18.0 cm to the left of Point C, the center of
curvature of the mirror, as shown in the
Chapter 34 Diffraction Practice Problems
1) A red laser pointer with a wavelength of 635 nm is shined on a double slit producing a
diffraction pattern on a screen that is 1.40 m behind the double slit. The central maximum
of the diffraction pattern has a
Class Problem 1 Waves
1) The displacement from equilibrium caused by a wave on a string is given by y(x, t) =
(0.00185 m)sin[(42.8 m1)x (744 s1)t]. For this wave, what are the following? (a)
amplitude? (b) number of waves in 1 m? (c) number of complete cy
Chapter 34 Diffraction Practice Problems Solution
1) 34.46. For the first dark fringe due to double slit interference:
dsin m 1/ 2 d y / L m 1/ 2 .
The width of the central maximum is twice
y,
so
w 2y.
Using
m 0,
109 m
L L 1.60 m 635
d
2.42 5 m.
10
2y w
Chapter 32 practice Problems Solution
1) 32.26.
For a radius of curvature of
R 10.0cm
and an object distance of
do 30.0 cm,
the image distance
is:
2 1
1 1 1 2
di
do di f R
R do
1
2
1
10.0 cm 30.0 cm
1
6.00 cm.
Therefore, the position of the image i
Chapter 31 practice Problems Solution
1) 31.21. THINK: A magnetic field can be produced by a current and by induction due to a
change in an electric flux. To solve this problem, use the Maxwell-Ampere law. There is no
current between the plates, but there
Class Problem Chapter 21
1) How many electrons do 6.94 kg of water contain?
2) Two identically charged particles separated by a distance of 7.8 m repel each other with a
force of 9 N. What is the magnitude of the charges?
3) In solid sodium chloride (tabl
Class Problem Chapter 25 Solution
25.28. THINK: The current is the same in both wires due to conservation of charge. This can be
used to compute the ratio of current densities. The ratio of the drift velocities can then be computed
by expressing the drift
1)
2)
3)
4)
5)
6)
7)
8)
Class Problem 2 Sound
You drop a stone down a well that is 6.65 m deep. How long is it before you hear the
splash? The speed of sound in air is 343 m/s. Ans:- 1.18 s.
The sound level in decibels is typically expressed as = 10 log(I
Class Problem Chapter 24
24.28. A spherical capacitor is made from two thin concentric conducting shells. The inner shell
has radius r1, and the outer shell has radius r2. What is the fractional difference in the
capacitances of this spherical capacitor a
Physics Lab: Electric Field Lines
By charlotterose91 | Studymode.com
Morgan Land
Elizabeth Hollis
Physics II
February 7, 2012
Electric Fields Lab
Abstract:
In this lab we will study the equipotential lines in an electric field in order to study the
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ECEg4222 Power Electronics and
Electrical Drives
Chapter 1: Introduction to Electrical Drives
By
H. A. Suud
Basic Elements of an Electrical Drive
Many industrial equipment's driving a load need a prime mover.
There are various types of prime movers such
College of Engineering & Technology
Department of Electrical and Computer
Engineering
Overview and Classification of power plant
Chapter-2
Introduction to Electrical & Computer
Engineering
Sisay F.(MSc. in Electrical Power Eng.)
Sources of the Energy
The
Power System Planning &
Operation
1
Outline
Overview of Power Systems
Power System Studies, a Time-horizon Perspective
Overview of the course:
Overview of Power System Operation & Control
Overview of Power System Planning
2
Chapter-one
Introduction
3