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Science Bowl Question

📅 NSB 2011 Set 4🎓 HS🔄 Round 1#️⃣ Question 21🌟 Bonus📝 Multiple Choice

Which of the following is the most common method of producing alternating current?

W) Circuits varying from parallel to series
X) Switches automatically turning on and off
Y) Turbines rotating backwards and forwards
Z) Magnets spinning in a coil of wire
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