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CETa Practice Test Questions and Answers Already Passed What is voltage in an electrical circuit? a. The rate of flow of electric charge b. The total resistance in a circuit c. The electrical potential difference between two points d. The energy consumed by a circuit What unit is u...

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  • September 29, 2024
  • 56
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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CETa Practice Test Questions and
Answers Already Passed

What is voltage in an electrical circuit?

a. The rate of flow of electric charge

b. The total resistance in a circuit


✔✔c. The electrical potential difference between two points


d. The energy consumed by a circuit




What unit is used to measure electrical frequency?

a. Volts

b. Amperes


✔✔c. Hertz


d. Ohms




What is the purpose of a resistor in a circuit?

a. To increase voltage

b. To store electrical energy



1

,✔✔c. To limit the flow of electric current


d. To measure current




How is electrical power calculated in a circuit?


✔✔a. By multiplying voltage by current


b. By adding resistance and current

c. By dividing voltage by resistance

d. By subtracting current from voltage




What happens to the total resistance in a series circuit when more resistors are added?


✔✔a. The total resistance increases


b. The total resistance decreases

c. The total resistance remains the same

d. The total resistance becomes negative




What is a characteristic of an AC circuit?

a. It has constant current flow

b. It has a fixed voltage


2

,✔✔c. The current alternates direction periodically


d. It is only used for high-voltage applications




What does a capacitor do in a circuit?

a. It converts AC to DC

b. It increases the voltage level


✔✔c. It stores electrical energy temporarily


d. It measures electrical current




How does frequency affect inductive reactance?


✔✔a. Inductive reactance increases with higher frequency


b. Inductive reactance decreases with higher frequency

c. Frequency has no effect on inductive reactance

d. Inductive reactance is constant regardless of frequency




What is a common use for transformers in electrical systems?

a. To store electrical energy

b. To measure current


3

, ✔✔c. To change voltage levels


d. To provide ground reference




What is the relationship between voltage and current in a simple resistive circuit?

a. They are independent of each other

b. Increasing voltage decreases current


✔✔c. Increasing voltage increases current, according to Ohm's Law


d. Voltage has no effect on current in resistive circuits




What does the term “ground” refer to in electrical circuits?

a. The positive side of a circuit


✔✔b. A reference point for measuring voltage


c. The output terminal of a power supply

d. The negative side of a circuit




What is the role of a diode in an electronic circuit?

a. To amplify signals


✔✔b. To allow current to flow in one direction only


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