One standard location for a pair of electrodes during an EKG is shown in the fig

Question

One standard location for a pair of electrodes during an EKG is shown in the figure P21.25. The potential difference ?V_31 = V_3 - V_1 is recorded. For each of the three instants, a, b, and c during the heart's cycle shown in the figure, will ?V_31 be positive or negative? Explain.

Below is the standard location for a pair of electrodes during an EKG

Below is Figure P21.29; the potential difference between electrodes charges as the heart beats

For each of the three instants, a, b, and c during the heart's cycle shown in the figure P21.29, will ?V_31 be positive or negative? Explain.

Explanation / Answer

a) positive

b) negative

c) positive

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