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Solution


Q.

The QRS complex in a standard ECG represents                 [2020]
1 repolarisation of auricles  
2 depolarisation of auricles  
3 depolarisation of ventricles  
4 repolarisation of ventricles  

Ans.

(3)

The QRS complex represents the depolarisation of the ventricles, that initiates the ventricular contraction.