Answer #14

The correct answer is C: Voltage is not an appropriate measure of amplitude for an ultrasound transducer. This statement is false. Voltage can be used as a measure of amplitude for a transducer. The higher the voltage the greater the amplitude of the electrical signal from a transducer. In addition amplitude can be used to describe any of the 4 major acoustic variables of sound which are 1) pressure 2) density 3) temperature and 4) particle location so Choice A is incorrect. Power, usually measured in Watts, is proportional to amplitude squared so Choice B is incorrect. A larger amplitude sound wave can improve penetration in some cases so Choice D is incorrect. Because amplitude is related to power and thereby also related to intensity, it relates to the risk of bioeffects, so Choice E is in correct.