The question is: ECG records _.
Correct answer: A. Voltage from the heart
- A. Voltage from the heart
- B. Heartbeat
- C. Stress
- D. None of these
Explanation
An electrocardiogram (ECG or EKG) is a test that measures the electrical activity of the heart. The heart is a muscular organ that pumps blood throughout the body. The electrical activity of the heart causes tiny electrical currents to flow throughout the body. These currents can be detected by electrodes placed on the skin. The ECG records these electrical signals as waves. The waves are then analyzed to determine if the heart is beating normally.The ECG does not measure heartbeat directly. It measures the electrical activity of the heart, which is responsible for the heartbeat.The ECG does not measure stress directly. However, stress can affect the electrical activity of the heart, which can be seen on the ECG.
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Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.
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