Q. What enables an electric current to flow in a circuit?
A) The motion of neutrons
B) The motion of electrons
C) The motion of protons
D) The motion of positrons
✔ Correct Answer: The motion of electrons
Exam Insight
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A) The motion of neutrons
B) The motion of electrons
C) The motion of protons
D) The motion of positrons
✔ Correct Answer: The motion of electrons
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