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Electrotherapy US Practice Test

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The primary energy conversion in the piezoelectric crystal is from electrical energy to
Correct Answer:
Sound waves
Explanation:
Piezoelectric crystals convert electrical energy into mechanical energy. When an alternating electrical signal is applied, the crystal rapidly deforms, producing mechanical vibrations that travel as sound or ultrasonic waves. This is why the primary energy conversion is electrical energy to mechanical (acoustic) energy. Magnetic energy and chemical energy aren’t generated by this effect, and electrical energy is the input, not the output.

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