Which of the following would cause electromagnetic induction?

The current in a loop of coils is constant.
A loop of coils is placed near high voltage power lines with alternating current.
A constant current is supplied to a circuit board in your computer.
Your phone is turned on after being fully charged.


Answer :

Answer:

The loop of coils -  Electromagnetic induction is caused a changing magnetic field moving thru a closed loop(s) of coils

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