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Electromagnetism
Page 4
Questions (3,916)
An electromagnet is a coil of wire with a current running through it. This creates an electromagnetic field. An additional
2 answers
asked by
ssm
95 views
An emf produced when...
2 answers
asked by
Fuad Faji Jemal
69 views
Which device functions with the principle of mutual inductance
2 answers
asked by
Fuad Faji Jemal
77 views
Define addy currents
2 answers
asked by
Fuad Faji Jemal
71 views
State the law of attraction
State the law of repulsion
2 answers
asked anonymously
58 views
a)suppose you walk across the carpet, touch a metal doorknob and get a shock. What charge do the particles causing charge have a
2 answers
asked anonymously
129 views
Suppose you have two charges, +4nC at point A and -6nC at point B that are separated by a distance of 100cm. What would be the
2 answers
asked by
James
118 views
what device does not use an electromagnet
2 answers
asked anonymously
94 views
what device does but use an electromagnet
2 answers
asked anonymously
67 views
How is an electromagnetic field produced?
A) when a conductor interacts with a magnet B) when a current runs through a conductor
1 answer
asked by
ray
106 views
What questions do you still have about electric and magnetic interactions
4 answers
asked anonymously
115 views
What data could you record on magnetic interactions
2 answers
asked anonymously
60 views
How do electromagnets cause a maglev train to levitate above the track? (1 point)
Magnets in the track and magnets in the bottom
2 answers
asked by
ulyjh,b
149 views
How can a team of students work together creatively to design an electromagnet? (1 point)
They can research different kinds of
2 answers
asked by
ulyjh,b
120 views
Which of the following factors would decrease the magnetic field strength of an electromagnet? (1 point)
increasing the distances
5 answers
asked by
ulyjh,b
153 views
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
131 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
80 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
286 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
63 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
95 views
Which factors directly affect the magnetic force produced by an electromagnet
1 answer
asked by
DeeDee
119 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
271 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
166 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
76 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
197 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
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