Concept explainers
bio Standard electrocardiography measures lime-dependent potential differences between multiple points on the body, giving cardiologists multiple perspectives on the heart’s electrical activity. In contrast, Fig. 22.26 is a “snapshot” showing a more detailed picture at an instant of time. The lines are equipotentials on the surface of a human torso, associated with the heart's electrical activity. Relative to the line marked V = 0, the potential is negative to the upper left (black) and positive to the lower right (color).
84. The electric field is strongest in the region marked
- a. A.
- b. B.
- c. C.
- d. D.
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