Which component is responsible for supplying power to all computer components?

Which component is responsible for supplying power to all computer components?

• A. Power Supply
• B. RAM
• C. ROM
• D. CPU

Answer: (A)

Power delivery is the crucial function of the power supply unit. It converts AC from the wall into the DC voltages that all components need, and it distributes those voltages through connectors to the motherboard, CPU, RAM, storage, and other peripherals. The different parts require different voltages (such as 12V, 5V, and 3.3V), and the power supply provides and regulates these rails. The RAM, ROM, and CPU all consume power; they don’t generate or supply power themselves. Without a power supply, nothing would power on.

Power delivery is the crucial function of the power supply unit. It converts AC from the wall into the DC voltages that all components need, and it distributes those voltages through connectors to the motherboard, CPU, RAM, storage, and other peripherals. The different parts require different voltages (such as 12V, 5V, and 3.3V), and the power supply provides and regulates these rails. The RAM, ROM, and CPU all consume power; they don’t generate or supply power themselves. Without a power supply, nothing would power on.