How Much Current Must Pass Through a 400 -Turn Ideal $4.0 \mathrm {~cm}$

question 164

Multiple Choice

How much current must pass through a 400 -turn ideal solenoid that is $4.0 \mathrm {~cm}$ long to generate a 1.0-T magnetic field at the center? $\left( \mu _ { 0 } = 4 \pi \times 10 ^ { - 7 } \mathrm {~T} \cdot \mathrm { m } / \mathrm { A } \right)$

• A) \(80 \mathrm {~A}\)
• B) \(22 \mathrm {~A}\)
• C) \(40 \mathrm {~A}\)
• D) \(0.013 \mathrm {~A}\)
• E) \(13 \mathrm {~A}\)

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