5v 1a以下什麼意思

"5V 1A" is a specification for the output of a power supply or a device that provides power to another device. Here's what it means:

• 5V: This is the voltage rating. It means that the power supply or device will provide a constant voltage of 5 volts. Voltage is a measure of the potential difference in electrical charge between two points. In this context, 5V is the voltage that will be supplied to the device that is being powered.

• 1A: This is the current rating. It means that the power supply or device is capable of delivering a maximum of 1 ampere of current. Current is a measure of the flow of electrical charge, and 1A is a standard unit of measurement for current.

In summary, a device with a "5V 1A" rating will provide a constant voltage of 5 volts and a maximum current of 1 ampere. This is a common rating for power supplies and devices that need to provide a steady supply of power to other devices.