An ECG Machine's Sensitivity Must Be Calibrated So That a 1-Millivolt

question 8

Multiple Choice

An ECG machine's sensitivity must be calibrated so that a 1-millivolt electrical signal will produce a deflection measuring exactly _____ mm tall.

• A) 0.5
• B) 1
• C) 5
• D) 10

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Definitions:

Magnetic Lines

Imaginary lines used in models and diagrams to represent the strength and direction of a magnetic field around a magnet or an electric current.

Coil

A component that generates a magnetic field when an electric current passes through it, often used in electrical and electronic devices.

Iron Core

An iron core is a ferromagnetic material used in electrical transformers and inductors to concentrate magnetic flux and improve their efficiency.

Electro-magnet

A magnet created by an electric current passing through a coil surrounding a metal core.