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Task 3
A student builds an electromagnet using a battery, a plastic nail, and some thin insulated wire. The wire is wrapped around the nail 10 times and then connected to the battery.
What changes could the student make to increase the strength of the electromagnet? Circle ALL that apply.
A. increase the length of the wire
B. decrease the voltage of the battery
C. place a small magnet near the battery
D. replace the plastic nail with an iron nail
E. wrap more loops of wire around the nail
F. replace the wire with a wire that has less resistance
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