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Maven AI
Maven sees your stem, selected option, and correct answer on practice and exam reports -not a blank chat window. When your Notes Library has coverage, answers can cite your own materials.
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Maven · Q19 coach
You chose option C on the magnetic field at the center of a coil (n = 500, R = 0.1 m).
Maven
Use B = μ₀nI / 2R with SI units. Your error was leaving R in cm -correct B ≈ 6.28×10⁻³ T.
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