Which of these factors affect electric force? (1 point)
Responses
Whether the charge on an object is positive or negative
Whether the charge on an object is positive or negative
The amount of the electric charge.
The amount of the electric charge.
The distance between two charged objects.
The distance between two charged objects.
All of the above.
All of the above.
Use the table of electric force to answer the question.
Charge on Object 1
Charge on Object 2
Distance Between Objects (mm)
Amount of Force
+1
+1
4
Weak
+1
-1
4
Weak
+2
-2
1
Strong
+2
+2
16
Weak
What happens to the amount of force as the distance between object 1 and object 2 increases?
(Scoring Note: Must select both correct responses in order to earn the test point. Half points are not awarded.)
(1 point)
The amount of force
increases
, as the distance between Object 1 and Object 2
increases
.
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The amount of force decreases, as the distance between Object 1 and Object 2 increases.
Use the table of information about four electromagnets to answer the question.
Electromagnet
Current Intensity
Number of Turns in the wire
W
medium
10
X
low
10
Y
medium
50
Z
low
50
Which electromagnet will produce the strongest magnetic force?
(1 point)
Responses
Electromagnet X
Electromagnet X
Electromagnet Z
Electromagnet Z
Electromagnet W
Electromagnet W
Electromagnet Y
Electromagnet Y
Choose which force is at work in each device. Each column contains exactly two answers. (4 points)
Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
Magnetic force is use. Electric force is used.
To determine which force is at work in each device, more information is needed. Please provide the devices in question.
You rub a balloon on your head and it becomes negatively charged. The balloon will be MOST attracted to:
(1 point)
Responses
A piece of metal.
A piece of metal.
Positively charged hair.
Positively charged hair.
The neutrally charged wall.
The neutrally charged wall.
Another negatively charged balloon.
Another negatively charged balloon.
Which set of magnets correctly illustrates the attraction of unlike poles?
(1 point)
Responses
set A
set A
set B
set B
set C
set C
set D