An Ideal Solenoid Having a Coil Density of 5000 Turns $10 \mathrm {~cm}$

question 57

Multiple Choice

An ideal solenoid having a coil density of 5000 turns per meter is $10 \mathrm {~cm}$ long and carries a current of $4.0 \mathrm {~A}$ . What is the strength of the magnetic field at its center?

• A) \(6.2 \mathrm { mT }\)
• B) \(3.1 \mathrm { mT }\)
• C) \(13 \mathrm { mT }\)
• D) \(25 \mathrm { mT }\)

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