Which requires less current: providing the same power to devices inside a PC?

D.

To determine which voltage requires less current to provide the same amount of power to devices inside a PC, we need to understand the relationship between voltage, current, and power.

Power (in watts) is equal to voltage (in volts) multiplied by current (in amperes). Therefore, to calculate the current required to provide a certain amount of power, we can divide the power by the voltage:

Current (in amperes) = Power (in watts) / Voltage (in volts)

Now, let's consider the answer choices:

A. 5.5V B. 12V C. 120V D. 220V.

Assuming the power requirement is the same, we can compare the amount of current required for each voltage:

For A. 5.5V: Current (in amperes) = Power (in watts) / Voltage (in volts) = P/5.5

For B. 12V: Current (in amperes) = Power (in watts) / Voltage (in volts) = P/12

For C. 120V: Current (in amperes) = Power (in watts) / Voltage (in volts) = P/120

For D. 220V: Current (in amperes) = Power (in watts) / Voltage (in volts) = P/220

From these equations, we can see that as the voltage increases, the amount of current required to provide the same amount of power decreases. Therefore, the voltage that requires less current to provide the same amount of power to devices inside a PC is A. 5.5V. However, it's important to note that this assumes the power requirement is the same for all voltages, which may not always be the case.