Dude what is khan academy talking about!?

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The8

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Suppose a rare genetic mutation doubles the diameters of the electrically conducting cells that transmit electrical activity throughout the heart and body. Which of the following describes the most direct effect this would have on observed ECG voltage fluctuations if all other aspects of the patient (height, weight, composition) remain the same?


WHAT THE HELL!!?? Why would "A quadrupling of the amplitude." be the answer. If the resistance is lowered 4X then the current will change with respect to the conducting cells no the voltage as the voltage is constant.

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