A Long Solenoid with 20 Turns Per Centimeter Has a Core

question 16

Multiple Choice

A long solenoid with 20 turns per centimeter has a core of iron-silicon.When the current is 1.50 A,the magnetic field inside the core is 4.50 T.The applied field _app is approximately

• A)1.88 mT
• B)3.77 mT
• C)4.32 mT
• D)3.87 mT
• E)1.93 mT

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