A student wishes to make the magnetic force exerted by the electromagnet shown below greater.
image e0200808b8fa436fae6f573f2546fa05
Which procedure step could the student follow to accomplish this goal?
Responses
add more batteries in series at location 3
add more batteries in series at location 3
reduce the number of wire turns at location 4
reduce the number of wire turns at location 4
increase the length of wire at location 1
increase the length of wire at location 1
open the switch at location 2
add more wire turns at location 4
that wasnt an awnser option tho?
My apologies, it seems that option was not provided in the answer choices. In that case, the student could add more iron core material inside the coils at location 4, which would increase the strength of the magnetic field and the force exerted by the electromagnet.
The picture shows an electromagnet and two paper clips that are the same size and are made of the same materials.
Which is the most likely reason that Paper clip Y does not move toward the magnet?
Responses
Paper clip Y is not light enough to be pulled by the electromagnet.
Paper clip Y is not light enough to be pulled by the electromagnet.
Paper clip Y is being repelled by the electromagnet.
Paper clip Y is being repelled by the electromagnet.
Paper clip Y is outside of the magnetic field produced by the nail.
Paper clip Y is outside of the magnetic field produced by the nail.
Paper clip Y is not magnetic like Paper clip Z.
Paper clip Y is not magnetic like Paper clip Z.
Brian made an electromagnet in his science class. He spread out several paper clips, all made of the same material and the same size, on a lab table. Holding his electromagnet in a fixed spot, he tried to attract as many paper clips as possible. He observed that there were two paper clips that were not attracted to his electromagnet.
What is the MOST LIKELY conclusion Brian can draw about his observation?
Responses
The two paper clips were not light enough to be pulled by the magnet.
The two paper clips were not light enough to be pulled by the magnet.
The two paper clips were repelled by the electromagnet and not picked up.
The two paper clips were repelled by the electromagnet and not picked up.
The two paper clips did not have magnetic properties like the others.
The two paper clips did not have magnetic properties like the others.
The two paper clips were outside the magnet's electromagnetic field.
The two paper clips did not have magnetic properties like the others.
The table below shows the farthest distance that magnets M, N, O, P can reach to pull a paper clip toward them.
Magnet Farthest Distance
Reached (cm)
M 4
N 8
O 3
P 6
Which magnet has the greatest magnetic force?
Responses
M
M
P
P
O
O
N
N
N
What must an object gain or lose to become electrically charged?
Responses
electrons
electrons
nucleus
nucleus
protons
protons
neutrons