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If a wire carrying current causes the needle of a compass to move:
O A. it disproves Ohm's law.
O B. it proves Ohm's law.
O C. it is an example of an open circuit.
O D. it demonstrates electromagnetism.
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Answer:

D. it demonstrates electromagnetism.

Explanation:

If a wire carrying current causes the needle of a compass to move, it is an example of electromagnetism.

The interaction between electric and magnetic fields is termed electromagnetism.

  • Electromagnetic interaction is usually induced between a wire and bar magnet.
  • With right set up magnetic and electrical fields can be induced using a magnet and current carrying wire.

Answer:D

Explanation:

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