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Which wire, when current flows through it, would be surrounded by the strongest magnetic feild?

User Kca
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2 Answers

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The wire with the greatest current flowing through it has the strongest magnetic field, no matter what the wire happens to be made of, or how thick it is.
User Drew Blas
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Since there are no answer choices I would go with iron in the core since has the best magnetic properties. 
User Dejay Clayton
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