Physics, 12.10.2019 22:30 velaserik1

Choose all of the statements that are true about electromagnets: 1. electromagnets are permanent and always have a magnetic field around them. 2. electromagnets can be made stronger by adding more coils to the solenoid. 3. electromagnets can be made stronger by increasing the strength of the electrical source. 4. none of the above.

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Choose all of the statements that are true about electromagnets: 1. electromagnets are permanent an...