Question

What is the unit of AC circuit?

Answer 1

In an AC (Alternating Current) circuit, the unit depends on what you're measuring. Here are the common units used for different quantities:

1. Voltage: The unit of voltage in an AC circuit is the volt (V).
   

1. Current: The unit of current is the ampere (A).
   

1. Resistance: The unit of resistance is the ohm (Ω).
   

1. Power:
   

   - Active Power (Real Power): The unit is the watt (W).
   - Reactive Power: The unit is the volt-ampere reactive (VAR).
   - Apparent Power: The unit is the volt-ampere (VA).

For AC circuits, voltage and current alternate in direction, and we typically measure them in terms of RMS (Root Mean Square) values for practical use, as they represent the equivalent DC value that would produce the same power.