EEG Review Questions 1-150 with
100% Correct Answers
1. The basic unit for measuring current flow is ____.
a. atomic weight
b. Coulomb
c. Volt
d. Ampere - ✔✔D. Ampere
2. The basic unit of resistance is ____.
a. Ohm
b. Coulomb
c. Ampere
d. Volt - ✔✔a. Ohm
3. Which of the following is not a valid expression of Ohm's law?(in this equation E
(electromotive force) is the dame as V (Voltage)
a. R=EI or(R=VI)
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,b. E=IR or(V=IR)
c. I=E/R or(I=V/R)
d. R=E/I or(R=V/I) - ✔✔a. R=EI or(R=VI)
4. Which of the following is not a unit for measuring alternating frequencies?
a. Cycles per second
b. Volts
c. Hertz
d. Kilocycles - ✔✔b. Volts
5. Which of the following describes the action of a capacitor?
a. opposes changes in current flow
b. converts alternating current to direct current
c. creates a direct current resistance
d. stores energy - ✔✔d. stores energy
6. A circuit that allows some frequencies to pass through it, while others are blocked is a
____.
a. resistor
b. transistor
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,c. filter
d. reactor - ✔✔c. filter
7. A combination of electronic components designed to increase the power, voltage or
current of a signal
a. amplifier
b. line filter
c. master gain control
d. sensitivity - ✔✔a. amplifier
8. A small fluctuating output recorded by the EEG instrument even when there is no
input signal is called ____.
a. output voltage
b. linear distortion
c. 60 Hz interference
d. noise - ✔✔d. noise
9. The EEG amplifier is designed so that when input 1 is more negative than input 2, the
deflection will be ____.
a. downward
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, b. upward
c. absent
d. sinusoidal - ✔✔b. upward
10. Common Mode Rejection is ____.
a. the ability of an amplifier to cancel out ECG artifact
b. the characteristic of an amplifier that rejects external interference
c. is dependent on the sampling rate
d. controlled by the 60-cycle notch filter - ✔✔b. the characteristic of an amplifier that
rejects external interference
11. Which of the following is most attenuated by a low frequency filter of 1 Hz?
a. 0.5 Hz
b. 5.0 Hz
c. 10.0 Hz
d. 0.1 Hz - ✔✔d. 0.1 Hz
12. Time constant is defined as the time required ____.
a. for the deflection to fall (decay) to 47% of the peak deflection b. for the deflection to
fall (decay) 57% of the peak deflection
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100% Correct Answers
1. The basic unit for measuring current flow is ____.
a. atomic weight
b. Coulomb
c. Volt
d. Ampere - ✔✔D. Ampere
2. The basic unit of resistance is ____.
a. Ohm
b. Coulomb
c. Ampere
d. Volt - ✔✔a. Ohm
3. Which of the following is not a valid expression of Ohm's law?(in this equation E
(electromotive force) is the dame as V (Voltage)
a. R=EI or(R=VI)
Katelyn Whitman, All Rights Reserved © 2025 1
,b. E=IR or(V=IR)
c. I=E/R or(I=V/R)
d. R=E/I or(R=V/I) - ✔✔a. R=EI or(R=VI)
4. Which of the following is not a unit for measuring alternating frequencies?
a. Cycles per second
b. Volts
c. Hertz
d. Kilocycles - ✔✔b. Volts
5. Which of the following describes the action of a capacitor?
a. opposes changes in current flow
b. converts alternating current to direct current
c. creates a direct current resistance
d. stores energy - ✔✔d. stores energy
6. A circuit that allows some frequencies to pass through it, while others are blocked is a
____.
a. resistor
b. transistor
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,c. filter
d. reactor - ✔✔c. filter
7. A combination of electronic components designed to increase the power, voltage or
current of a signal
a. amplifier
b. line filter
c. master gain control
d. sensitivity - ✔✔a. amplifier
8. A small fluctuating output recorded by the EEG instrument even when there is no
input signal is called ____.
a. output voltage
b. linear distortion
c. 60 Hz interference
d. noise - ✔✔d. noise
9. The EEG amplifier is designed so that when input 1 is more negative than input 2, the
deflection will be ____.
a. downward
Katelyn Whitman, All Rights Reserved © 2025 3
, b. upward
c. absent
d. sinusoidal - ✔✔b. upward
10. Common Mode Rejection is ____.
a. the ability of an amplifier to cancel out ECG artifact
b. the characteristic of an amplifier that rejects external interference
c. is dependent on the sampling rate
d. controlled by the 60-cycle notch filter - ✔✔b. the characteristic of an amplifier that
rejects external interference
11. Which of the following is most attenuated by a low frequency filter of 1 Hz?
a. 0.5 Hz
b. 5.0 Hz
c. 10.0 Hz
d. 0.1 Hz - ✔✔d. 0.1 Hz
12. Time constant is defined as the time required ____.
a. for the deflection to fall (decay) to 47% of the peak deflection b. for the deflection to
fall (decay) 57% of the peak deflection
Katelyn Whitman, All Rights Reserved © 2025 4
