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AP Physics 2
14.4 Electromagnetic Waves
AdvancedMCQConceptual14.1k
A 3D Cartesian coordinate system showing the x-axis extending horizontally to the right, the y-axis pointing vertically straight up, and the z-axis extending forward to the lower-left at a 45-degree angle. A sinusoidal electromagnetic wave travels along the positive x-axis. At a peak along the wave, a vertical double-headed arrow parallel to the y-axis is labeled E. At the same position, a horizontal double-headed arrow parallel to the z-axis is labeled B. No other labels, lines, text, or axes appear.
Orientation of electric and magnetic fields in the propagating wave.
A broadcast tower transmits a linearly polarized electromagnetic radio wave propagating horizontally in the \(+x\)-direction. The wave's electric field \(\vec{E}\) oscillates along the vertical \(y\)-axis, and its magnetic field \(\vec{B}\) oscillates along the horizontal \(z\)-axis. An engineer tests two receiving antennas: a thin, straight conducting rod that responds to electric forces, and a small, flat circular wire loop that responds to magnetic induction. To detect the maximum peak induced voltage in each antenna, how should the straight rod be aligned and how should the plane containing the circular loop be oriented?

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