Question: ( a ) During surgery, a current as small as 2 0 . 0 0 uA applied directly to the heart may cause ventricular fibrillation.

(a) During surgery, a current as small as 20.00 uA applied directly to the heart may cause ventricular fibrillation. If the resistance of the exposed heart is 300, what is the smallest voltage that poses this danger? (b) Does your answer imply that special
electrical safety precautions are needed?

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