Which one of the following statements regarding Electrocardiogram is correct ?
[amp_mcq option1=âElectrocardiogram is graphical representation of electrical activity of corneaâ option2=âElectrocardiogram is graphical representation of activity of kidneyâ option3=âElectrocardiogram is graphical representation of activity of brainâ option4=âElectrocardiogram is graphical representation of electrical activity of heartâ correct=âoption4âł]
This question was previously asked in
UPSC NDA-1 â 2019