Physics 210 Multiple Choice week 9
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1. One long wire carries a current of 30 A along the entire x axis. A second long wire carries a current of 40 A
perpendicular to the xy plane and passes through the point (0, 4, 0) m. What is the magnitude of the
CprE 185:
Introduction to Computer
Engineering and to Problem
Solving
Instructor: George Amariucai
http:/home.engineering.iastate.edu/~gamari/CprE185_S12/
HW1 is out
Pick 5 of the following 9 programming projects (located
on pages 102106 in the textbook
Answers and Hints to Sample Problem Set #3
4.3
We can solve this by trial and error (by guessing). Assuming a weekly compounding
(M=52)
r = 6.89%
0.0689 52
ia = (1 +
) 1 = 0.07128
52
We also can solve the general equation as following.
0.0689 M
) 1 = 0.07
Answers and Hints to sample Problems #2
3.12
(a) Singlepayment compound amount ( F / P, i, N ) factors for
n
9%
10%
35
20.4140
28.1024
40
31.4094
45.2593
To find ( F / P , 9.5%, 38) , first interpolate for n = 38
n
9%
10%
38
27.0112
38.3965
Then interpol
4/10/2011
Chapter 30
Sources of Magnetic Field
MAGNETIC FIELDS CREATED
BY MOVING CHARGES
Biot Savart Law
1
4/10/2011
A charge at rest creates an electric field. A charge in motion
creates both an electric and a magnetic field.
So, what is the magnetic fie
4/10/2011
Chapter 29
Magnetic Fields
A Brief History of Magnetism
1600
William Gilbert
Expanded experiments with magnetism to a variety of materials
Suggested the Earth itself was a large permanent magnet
1819
Hans Christian Oersted
Discovered the relatio
3/16/2010
Chapter 27
Current
And
And
Resistance
Electric Current
Electric current is the rate of flow of charge
through some region of space
The SI unit of current is the ampere (A)
1A=1C/s
The symbol for electric current is I
1
3/16/2010
Average Electric
Electric Field
The electrical interaction is a long distance interaction rather than
a contact force. The concept of electrical field deals with this
problem of a force being felt between charges which are at some
distance from each other
We say then that
What is Charge?
How can we charge an object?
Experiment #1: Lets friction together a plastic rod and a piece of wool. Lets now
take the rod and touch two small (very light) balls of cork or paper suspended by
thin silk or nylon threads.
Observation: The t
1/16/2010
Chapter 16
16
Wave Motion
Types of Waves
There are two main types of waves
Mechanical waves
Some physical medium is being disturbed
The wave is the propagation of a disturbance through
a medium
Electromagnetic waves
No medium required
No medium
2/5/2010
Chapter 13
13
Universal Gravitation
Newtons Law of Universal
Gravitation
Every particle in the Universe attracts every other
particle with force that is directly proportional to
particle with a force that is directly proportional to
the product o
Physics 210 Multiple Choice Problems for week 5
Identify the choice that best completes the statement or answers the question.
_
1. Charge of uniform density (3.5 nC/m) is distributed along the circular arc shown. Determine the electric
potential (relativ
AC voltages
AC
veforms
Up Next:
previously:
Complete response (with sources) for
RC & FL circuits
More examples
Outline
I
L
Ii
I
ft)
vs
j
\J
So far we have considered only:
Vs onstant; Is = constant
DCvsAC
4
:
7
(tr
T = Period of the Sinusoid
f = Fre
Up Next
1 order circuits (RC & RL)
. Source4ree response
Inductors
Vtrelationships, power & energy
Capacrtors
previously:
Outline
Two ways to excite active elements
Source free assumes energy is initially stored in
capacitive or inductive element
Exc
The Capacitor
Sertes & Parallel Capacitors
Energy Storage Elements
Up Next:
Nortons Theorem
Practical Sources
Maximum Power Transfer
previously:
Outline
Goals:
stmplifng circuits
evaluating voltages across, currents through and power
dissipated y pa
Up Next
Nortons Theorem
Practical Sources
Maximum Power Transfer
0
Linearity property
Superposition
Thevenins Theorem
previously:
Outline
Particular element in a circuit is variable (usually
called the load), while other elements are fixed
g.
1
e Ho
KVL => Mesh Analysis
KCL => Nodal Analysis
Up Next
Linearity property
Superposition
Thevenins Theorem
previously:
Outline
vs
Linear
Circuit
C
R
A linear circuit is one whose output is linearly
related (directly proportional) to its input
Linearity is
KVL => Series Resistors & Voltage Division
KCL => Parallel Resistors & Current Division
This week:
Wheatstone Bridge
Ideal & Real Voltage Sources
Nodal Analysis
previously:
Outline
.
Nodal Analysis (based on KCL)
MshA
sic (basdrn KVL)
2 powerful circ
KVL => Series Resistors & Voltage Division
KCL => Parallel Resistors & Current Division
This week:
Wheatstone Bridge
ideal & Real Voltage Sources
Nodal Analysis
Mesh Analysis
previously:
Outline
k111
0
2
L
L
ft1LJ
N
/T,LL
oT,y,4
o,J
C() ,rt 1
s
Resistance R (C)
Ohms LawV=IR
Characteristics of Resistors
Outline
This property is called the electrical resistance
of the material and denoted as R
Coflision
depends on property of material  that is exhibited
as opposition to current flow

Current
Winter 2012
Dr Beau Standish
Sections 4, 5, 6,
Week 1
ELE2O2: Electric Circuits
Analysis
Charge Q (C); Current I (A); Voltage V (V)
Power P (W)
Reference directions
Basic concepts (1)
Administration
Scope and Objectives
Assessment
Course Info
Ou
Old Examination Questions Chapter 22 (Dr. GondalPhys102)
T072
Q1.Two charges are arranged as shown in the figure below. If d=7.2 cm, what is the resultant
electric field at P A) 1.23 x 10 N/C making an angle of 45o with + xaxis.
4
Fig 81.1
Fig 81.2
Fig.
Longitudinal waves
We call Sound in general to longitudinal waves
whose frequencies are in the audible range, i.e.
between 20 Hz and 20000 Hz.
Infrasonic waves have frequencies below the
audible range, 20 Hz
Ultrasonic waves have frequencies above the
aud
Oscillatory
Motion
Chapter 15
A periodic motion is a motion which is repeated over and over
again. Thus,
the time interval after which the motion is repeated is called the
PERIOD.
The motion performed by the object during the time of a period
is a CYCLE a
Electrical Engineering 234
Electrical Engineering Circuit Laboratory
by Robert C. Maher, Assistant Professor
with Duane T. Hickenbottom, Graduate Assistant
University of
Nebraska
Lincoln
Department of Electrical Engineering
EEngr 234
Contents
Laboratory
/*
file: args_1.c
author: Bart Gajderowicz
The following program demonstrates processing a 2 dimensional array
for Final Exam , for CPS125 W09.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main (int argc, char * argv[])
cfw_