In household electrical power systems, the current supplied to homes is typically which type of current?

• A. Direct current (DC)
• B. Constant-current (CC) with fixed magnitude and direction
• C. Alternating current (AC)
• D. Pulsed direct current (PDC)

Answer: (C)

Verified step by step guidance

1. Understand the types of electrical current: Direct Current (DC) flows in one constant direction, Alternating Current (AC) periodically reverses direction, Constant Current (CC) maintains a fixed magnitude and direction, and Pulsed Direct Current (PDC) is a form of DC that switches on and off rapidly.
2. Recall that household electrical power systems are designed to efficiently transmit electricity over long distances from power plants to homes.
3. Recognize that Alternating Current (AC) is used in household power systems because it can be easily transformed to different voltages using transformers, which reduces energy loss during transmission.
4. Note that Direct Current (DC) is typically used in batteries and electronic devices, but not for general household power distribution.
5. Conclude that the current supplied to homes in household electrical power systems is Alternating Current (AC) due to its practical advantages in transmission and distribution.