Darker lines further divide EKG graph paper every fifth square. Each large square measures 5 mm in height and width and represents a time interval of:

Question

Quizplus · Accepted Answer

Each small square on the EKG graph paper measures 1 mm in height and width and represents a time interval of 0.04 seconds. Since each large square contains 5 small squares in both directions, it measures 5 mm in height and width and represents a time interval of 0.04 x 5 = 0.20 seconds. The darker lines further dividing the graph paper every fifth square represent a time interval of 0.20 x 5 = 1 second. Therefore, the best choice is B, as it correctly represents the time interval of each large square on the EKG.

Darker Lines Further Divide EKG Graph Paper Every Fifth Square