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AP Physics 2
12.4 Electromagnetic Induction and Faraday’s Law
BeginnerMCQMathematicalConceptual15.9k
Two side-by-side diagrams showing a circular wire loop in a uniform magnetic field consisting of parallel upward vertical arrows labeled B. On the left, labeled Orientation 1, the wire loop lies horizontally so that the vertical magnetic field lines pass directly through the surface bounded by the loop. An area vector arrow labeled A points straight upward along the loop's central axis, parallel to the magnetic field arrows. On the right, labeled Orientation 2, the wire loop is tipped vertically so that the plane of the loop is parallel to the vertical magnetic field arrows, with magnetic field lines skimming past the surface without penetrating it. An area vector arrow labeled A points horizontally to the right, perpendicular to the magnetic field arrows. No other labels, lines, text, or axes appear.
A flat wire loop in two orientations relative to a uniform magnetic field.
A flat circular loop of wire with surface area \(A\) is placed in a region of uniform magnetic field of magnitude \(B\). In Orientation 1, the plane of the loop is perpendicular to the magnetic field. In Orientation 2, the plane of the loop is parallel to the magnetic field. Which of the following correctly identifies the magnetic flux through the loop for each orientation?

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