When looking at the ECG graph paper,you notice the 'P-R' interval is exactly the same distance of one of the larger squares.What is this distance?

Name: When looking at the ECG graph paper,you notice the 'P-R' interval is exactly the same distance of one of the larger squares.What is this distance?
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Question

Quizplus · Accepted Answer

Length on the graph represents time.One small square is 0.04 second.One of the larger squares represents 0.20 second (5 small squares).

When Looking at the ECG Graph Paper,you Notice the 'P-R