Medicine In a normal electrocardiogram (ECG or EKG), A The P wave results from repolarization of the atria. B The QRS complex results from depolarization of the ventricles. C The T wave represents repolarization of the auricles. D During the P-R interval, the ventricle contract. 💡 Explanation In a normal electrocardiogram (ECG or EKG), ✓ Correct Answer: B. The QRS complex results from depolarization of the ventricles.