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2/11/24, 11:33 AM
Test 1: PHYS 241 001 15A SP24 - Elec Magnetism & Light
https://ccp.instructure.com/courses/1905078/quizzes/3938849
1/10
Test 1
Due
Feb 11 at 11:59pm
Points
12.1
Questions
13
Available
Feb 10 at 11:59pm - Feb 11 at 11:59pm
Time Limit
180 Minutes
Instructions
Attempt History
Attempt
Time
Score
LATEST
Attempt 1
122 minutes
9.1 out of 12.1
Correct answers will be available on Feb 18 at 12am.
Score for this quiz: 9.1
out of 12.1
Submitted Feb 11 at 11:32am
This attempt took 122 minutes.
By starting this online test, you agree to use only your notes, textbook, and WileyPLUS resources as
a resource for solving these problems.
You may not use the internet other than for resources found on our Canvas site.
After you answer a question, YOU CANNOT GO BACK TO IT TO CHANGE YOUR ANSWER, so
double check your answer before you submit.
The test must be completed in 3 hours after the test has begun.
1 / 1 pts
Question 1
We have four identical conducting spheres that are separated by a
distance much greater than their identical radii. They have the following
initial charges: A
, +16
e
; B
, -14
e
; C
, -15
e
; D
, +23
e
.
Sphere A
is touched to sphere B
and then pulled away.
Sphere B
is then touched to sphere C
and then pulled away.
Sphere A
is then touched to sphere D
and then pulled away.
What is the final charge on sphere D
?
2/11/24, 11:33 AM
Test 1: PHYS 241 001 15A SP24 - Elec Magnetism & Light
https://ccp.instructure.com/courses/1905078/quizzes/3938849
2/10
-2e +8e +6e -8e +12e 1 / 1 pts
Question 2
The figure below shows charged particles 1 and 2 that are fixed in
placed. q
= -8
e
, q
= +3
e
, d
= 0.200 m. At what coordinate should a
third charged particle be placed (
x
= ?? m) such that the net force on it
is zero?
1
2
0.516 0.887 -0.550 -0.333 1 / 1 pts
Question 3
2/11/24, 11:33 AM
Test 1: PHYS 241 001 15A SP24 - Elec Magnetism & Light
https://ccp.instructure.com/courses/1905078/quizzes/3938849
3/10
The figure shows three charged particles. What is the x
component (in
N) of the net force on the particle at the origin?
d = d = 2.00 m, q
= 3
e
, q
= -6
e
, q
= -2
e
, θ = 30.0º.
1
2
1
2
3
0 / 1 pts
Question 4
Incorrect
Incorrect
The figure shows two charged particles fixed on an x
axis. It also shows
a plot of the net electric field for points between the two particles,
complete with the algebraic sign of the field. Which of the following
gives the signs of the charges?
2/11/24, 11:33 AM
Test 1: PHYS 241 001 15A SP24 - Elec Magnetism & Light
https://ccp.instructure.com/courses/1905078/quizzes/3938849
4/10
-q
, +q
1
2
+q
, -q
1
2
+q
, +q
1
2
-q
, -q
1
2
0 / 1 pts
Question 5
Incorrect
Incorrect
In the figure, two particles with the same magnitude of charge, are at
equal distances d from the origin. Four points are shown. At which is
the net electric field in the positive direction of the x
axis? 1 only 2 only 1 & 3 only 2 & 4 only 1 / 1 pts
Question 6
The figure shows two charged particles. Distance d is 2.00 m. What is
the magnitude (in N/C) of the net electric field at the origin? q
= +5
e q
= -2
e θ
= 30.0º
1
2
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