ABRET Board Exam (Questions with 100% correct answers)

The basic unit for measuring current flow is A. atomic weight B. Coulomb C. Volt D. Ampere correct answers D. Ampere The basic unit of resistance A. Ohm B. Coulomb C. Ampere D. Volt correct answers A. Ohm Which of the following is not a valid expression of Ohm's law? A. R=EI or (R=VI) B. E=IR or (V=IR) C. I= E/R or (I=V/R) D. R= E/I or (R= V/I) correct answers A. R=EI or (R=VI) Which of the following is not a unit for measuring alternating frequencies A. Cycles per second B. Volts C. Hertz D. Kilocycles correct answers B. Volts 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 correct answers D. Stores energy A circuit that allows some frequencies to pass through it, while others are blocked is a... A. Resistor B. Transistor C. Filter D. Reactor correct answers C. Filter 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 correct answers A. Amplifier A small fluctuating output recorded by the EEG instrument even when there is no input signal is called... A. output voltage