How Many Turns Should a 10-Cm Long Ideal Solenoid Have

question 140

Multiple Choice

How many turns should a 10-cm long ideal solenoid have if it is to generate a 1.5-mT magnetic field when 1.0 A of current runs through it? (μ₀ = 4π × 10^-7 T ∙ m/A)

• A)12
• B)15
• C)120
• D)1200
• E)3200

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