SAT, 22.02.2021 22:00 daniel1480

10. Which of the following is the most important difference between a permanent magnet and an electromagnet? Electromagnets must have an electric power source.
ООО
Permanent magnets must have a source of electricity.
Electromagnets are bigger.
Permanent magnets are stronger.

Answers: 2

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10. Which of the following is the most important difference between a permanent magnet and an electromagnet? Electromagnets must have an electric power source. ООО Permanent magnets must have a source of electricity. Electromagnets are bigger. Permanent magnets are stronger.

Answers

Another question on SAT

10. Which of the following is the most important difference between a permanent magnet and an electromagnet? Electromagnets must have an electric power source.
ООО
Permanent magnets must have a source of electricity.
Electromagnets are bigger.
Permanent magnets are stronger.