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?
a. electromagnets have a strong, constant magnetic field.
b. electromagnets are more powerful than permanent magnets.
c. electromagnets don’t need a source of electricity to work.
d. electromagnets can easily be turned on and off.
Answers: 1
Biology, 22.06.2019 18:30
There are few cells in the body that do not undergo mitosis: most somatic cells divide regularly, some more than others. take for example the cells that line the digestive tract. these cells must be frequently replaced because they are constantly eroded by the movement of food through the tract. what mechanism(s) is/are in place to ensure that these cells are exact copies of the mother cell
Answers: 1
An electromagnet is a device in which moving electric charges (current) in a coil of wire create a m...
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