Which of the following does limb lead II of a typical electrocardiogram represent? A. A graph of the variation of voltage produced by the heart against time. B. The voltage at right arm (RA) plus the voltage at left leg (LL). C. The electrical events that precede the contraction of the ventricles. D. The projection of the electric dipole vector of the heart on the line from left arm (LA) to right arm (RA).
Option A. Limb lead 2 of an electrocardiogram represents:- A graph of the variation of voltage produced by the heart against time.
