Final answer:
Leads V1 and V2 are placed over the right side of the heart, which includes the right atrium and right ventricle, to measure the heart's electrical activity in that area for an ECG.
Step-by-step explanation:
Leads V1 and V2 are placed over the right side of the heart, specifically over the right atrium and right ventricle. These leads are part of a 12-lead electrocardiogram (ECG) which is a non-invasive test used to detect cardiac abnormalities by measuring the heart's electrical activity. The positioning of these leads is crucial for the accurate interpretation of the ECG, as they provide information about the depolarization of the heart's right side during the cardiac cycle.