An electromagnet is a device in which moving electric charges (current) in a coil of wire create a magnet. what’s one advantage of using electromagnets in devices?
1.electromagnets have a strong, constant magnetic field.
2.electromagnets are more powerful than permanent magnets.
3.electromagnets don’t need a source of electricity to work.
4.electromagnets can easily be turned on and off.
Answers: 2
Physics, 21.06.2019 17:10
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Physics, 22.06.2019 11:30
Which of these questions might a character ask if the conflict is man versus self? a. which path should i take to better myself? b. which boulder will be too heavy for me to carry? c. which friend is going to ditch me today? d. all of the above
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Physics, 22.06.2019 12:10
Does anyone have the answers to online physics course plato course physics, semester a v3.0
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Physics, 22.06.2019 19:30
Point charges q1=+2.00μc and q2=−2.00μc are placed at adjacent corners of a square for which the length of each side is 1.50 cm . point a is at the center of the square, and point b is at the empty corner closest to q2. take the electric potential to be zero at a distance far from both charges. part a what is the electric potential at point a due to q1 and q2? express your answer with the appropriate units.
Answers: 2
An electromagnet is a device in which moving electric charges (current) in a coil of wire create a m...
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