Standard electrocardiography measures time-dependent potential differences betwe

Question

Standard electrocardiography measures time-dependent potential differences between multiple points on the body, giving cardiologists multiple perspectives on the heart's electrical activity. In contrast, the given figure 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 (pink). (Figure 1) The electric field is strongest in the region marked A. D. C. B.

Explanation / Answer

Equipotential lines are closer at point C

so Electric field will be stongest at point C

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