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3 years ago

12

A student builds an electromagnet using a battery, an iron nail, and some insulated wire. The wire is wrapped around the nail 50

times, then connected to the
battery. What changes could the student make to increase the strength of the electromagnet?
1. wrap more wire around the nail
2. increase the voltage of the battery
3. use a switch to turn the electromagnetic on and off
4. increase the size of the nail

A. 1 and 2
B. 2 and 4
C. 1,2 and 4
D. 1,2,and 3

2 answers:

AfilCa [17]3 years ago

8 0

Answer: A ( 1 and 2)

Explanation:

I just know it’s right

dedylja [7]3 years ago

5 0

Answer:

a

Explanation:

its right

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