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Electromagnetism
Page 4
Questions (3,923)
Biot's savart law??
2 answers
asked by
Kartik
92 views
How do electromagnets cause a maglev train to levitate above the track? (1 point)
Responses Magnets in the track and magnets in
2 answers
asked by
Drake
132 views
Why is glass a good insulator?
* 1 point The atoms in glass hold on tightly to their negatively charged particles. The atoms in
11 answers
asked anonymously
265 views
Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. A radio signal travels
2 answers
asked by
lol gee wow
102 views
Explain how electromagnet move a magnet train.
2 answers
asked by
Milo
48 views
Which of the following electromagnets would have the greatest magnetic field?
a b c d
2 answers
asked by
S
75 views
Which of the following is NOT a way you can strengthen an electromagnet?
a Increasing the voltage of a battery b Increasing the
2 answers
asked by
A
81 views
An electromagnet is a coil of wire with a current running through it. This creates an electromagnetic field. An additional
2 answers
asked by
*shrugs shoulders
105 views
Use the table to answer the question.
Electromagnet Current Intensity Number of Turns P medium 20 Q low 20 R low 15 Which list
5 answers
asked by
*shrugs shoulders
288 views
Which statement explains how the charges on objects determine the electric force between them?(1 point)
Responses Objects with
7 answers
asked by
*shrugs shoulders
294 views
Which of the following is NOT a way you can strengthen an electromagnet?
a Using thinner wire b Increasing the number of coils of
2 answers
asked anonymously
64 views
Based on the arrangement of the electric field lines in the diagram, what are the charges and how are they interacting?
a They
2 answers
asked anonymously
112 views
Which of the following electromagnets would have the greatest magnetic field?
A- electromagent with long nail and 3 coils B-
2 answers
asked anonymously
130 views
Which statement below best describes the electrical force between the two charged objects.
a Object A is negatively charged and
1 answer
asked by
kali
182 views
How do electromagnets cause a maglev train to levitate above the track? (1 point)
Responses Magnets in the track and magnets in
1 answer
asked by
Water
96 views
Students build four electromagnets and test them by picking up metal tacks. Here are their partial results.
12 coils 4 tacks 24
1 answer
asked by
Water
113 views
Which of the following factors would decrease the magnetic field strength of an electromagnet?(1 point)
Responses using an iron
4 answers
asked by
Water
92 views
Maria makes an electromagnet shown in the figure below. The battery has a voltage of 6.0V, and she uses an iron nail. Which of
1 answer
asked by
T
115 views
An electromagnet is a coil of wire with a current running through it. This creates an electromagnetic field. An additional
1 answer
asked by
oh em gee wow
80 views
Which of the following directly affects the strength of an electromagnet?
a Length of core, type of force b Type of force, number
1 answer
asked by
kali
92 views
Which can produce a magnetic field?
a. moving water b. insulators with conductors c. an electric current d. a solid state
17 answers
asked by
christinaqz
108 views
An electron is limited to travel at speeds less than c. Does this put an upper limit on the momentum of an electron? If so, what
1 answer
asked by
Marie
97 views
Which factors directly affect the magnetic force produced by an electromagnet
1 answer
asked by
DeeDee
120 views
How come the more turns a coil gets the more magnetic it gets?
11 answers
asked by
Caleb Pans
90 views
Avery is experimenting with a simple circuit. She measures the current in the circuit three different times with a different
1 answer
asked by
T
116 views
Use the table to answer the question.
| Electromagnet |Current Intensity | Number of Turns |
1 answer
asked by
ray
95 views
Which of the following is NOT a way you can strengthen an electromagnet?
a Increasing the voltage of a battery b Using thicker
1 answer
asked by
no name
66 views
11 a) A straight piece of conducting wire, 20 cm long, lies at 70°
a magnetic field of 1.8 × 10−5 T. A current, I, is allowed
1 answer
asked by
Fuad faji jemal
81 views
Which statement below best describes the electrical force between the two charged objects.
a Object A is negatively charged and
1 answer
asked by
no name
272 views
Which of the following will decrease the electrical force between two charges? (Select all that apply)
a increasing the distance
1 answer
asked by
no name
196 views
A student wishes to make the magnetic force exerted by the electromagnet shown below greater.
image
23 answers
asked by
s
167 views
What must an object gain or lose to become electrically charged?
a electrons b protons c nucleus d neutrons
1 answer
asked by
kali
77 views
Maria makes an electromagnet shown in the figure below. The battery has a voltage of 6.0V, and she uses an iron nail. Which of
1 answer
asked by
kali
198 views
16. An electron moves with a speed of 8.0 x 106 m/s along the +x-axis. It enters a region where
there is a magnetic field of 2.5
1 answer
asked by
dfxdt
75 views
Maria makes an electromagnet shown in the figure below. The battery has a voltage of 6.0V, and she uses an iron nail. Which of
1 answer
asked by
LUNE
85 views
Which of the following choices of path allow you to use Ampère’s law to find B(r).
1. The path must pass through the point
4 answers
asked by
Spencer
1,714 views
A proton moving eastward with a velocity of 5.0 km/s enters a magnetic field of 0.20 T pointing northward. What is the magnitude
1 answer
asked by
ant
136 views
A particle with a mass of 6.64x10^-27 kg and a charge of +3.2x10^-19 C is accelerated from rest through a potential difference
4 answers
asked by
Anonymous
2,623 views
An infinite line charge of uniform linear charge density lambda = -2.5 micro Coulombs lies parallel to the y axis at x = 0 m. A
6 answers
asked by
aaron b.
3,120 views
1 Metal paper clips do not attract or repel each other. When an electromagnet is placed nearby, the paper clips can be observed
11 answers
asked by
carl
4,375 views
An electromagnetic wave is produced by:
A. an accelerating charged particle or changing magnetic fields B. an accelerating
3 answers
asked by
sophie
857 views
When an electron is displaced in a semiconductor, the hole that's left behind is
A. incapable of carrying a charge. B. considered
3 answers
asked by
Anonymous
998 views
Which of the following best
describes eddy current? A. The induced emf in a circuit is directly proportional to the rate of
2 answers
asked anonymously
127 views
the motor effect that results from the interaction of the magnetic field around a current carrying conductor and a bar magnet
1 answer
asked by
Mbewenhle
86 views
How do electromagnets cause a maglev train to levitate above the track? (1 point) Magnets in the track and magnets in the bottom
1 answer
asked by
roar
213 views
Students build four electromagnets and test them by picking up metal tacks. Here are their partial results. 12 coils 4 tacks 24
1 answer
asked by
roar
118 views
what is the principle of magnetism
1 answer
asked by
Mbewenhle
79 views
A magnetic field is created by a charged particle that is
* 1 point balanced. motionless. moving. unbalanced.
11 answers
asked by
k
72 views
Which of the following directly affects the strength of an electromagnet?
a Number of coils, amount of current b Length of core,
1 answer
asked by
no name
69 views
Using Coulomb's Law, if the distance between two charged objects is decreased, what happens to the electric force between them?
a
1 answer
asked by
social studies
282 views
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