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Difficulty: EasyDirect Current (DC) vs. Alternating Current (AC)

In an alternating current (AC) circuit, electrical current periodically reverses its direction of flow at a regular rate measured in hertz (HzHz).

Answer: Answer

Answer

True
The statement is true because alternating current (AC) is defined by its periodic reversal of direction and polarity, with the number of complete cycles per second measured in hertz (HzHz).

Step-by-Step Solution

1
Identify the core definition of alternating current (AC).
Alternating current is defined as current that periodically reverses its direction of flow over time.
This bidirectional oscillation distinguishes AC from unidirectional direct current (DC).
2
Determine the unit of measurement for the rate of these reversals.
The number of complete forward-and-backward cycles per second is frequency, measured in hertz (HzHz).
One hertz equals one complete cycle per second.
3
Evaluate the truth value of the stem statement.
The statement is true because it correctly describes both the periodic reversal and the unit of frequency for AC.
All facts in the statement align with standard electrical definitions.

Key Concept

Alternating Current (AC) Directional Reversal and Frequency
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Topics

Direct Current (DC) vs. Alternating Current (AC)

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