Heating, Ventilation, and Air Conditioning (HVAC ) Electrical Practice Test

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Which symbol is designated for current in electrical circuits?

  1. C

  2. I

  3. V

  4. R

The correct answer is: I

The symbol designated for current in electrical circuits is represented by the letter "I." This designation originates from the French term "intensité de courant," which means "intensity of current." Current is defined as the flow of electric charge in a circuit and is measured in amperes (A). Understanding the other symbols can provide clarity on their roles in electrical terminology. The letter "C" often denotes capacitance, measured in farads (F), while "V" signifies voltage, expressed in volts (V), which represents the potential difference between two points in a circuit. The letter "R" stands for resistance, measured in ohms (Ω), which quantifies how much a component opposes the flow of current. Thus, while "I" specifically refers to current, each of the other symbols has its own distinct meaning and application within circuit analysis.

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