An electromagnet is created using a battery , an insulated copper wire and and an iron nail . the wire is wrapped around the nail 20 times and attached to the battery. which pair of changes will definitely increase the strength of the electromagnet
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Ответ:
According to the ideal transformers equation Ns/ Np = Vs/Vp where s= secondary and p= primary, number of turns is proportional to voltage so a increased number of turns and increased voltage result in a higher power.
Hope I helped!
Ответ:
B.
he also died in a town called chihuahua.
Explanation: