A generator.
A; Terminology is not correct a transformer is not really a source but rather a device to transform one source of power to some power that can be used as required minus efficiency of power transfer
Consider a battery for a moment. A battery can be a source or sink type of power source. A light bulb would be considered a source current. When a battery or other item is being charged is it considered a sinking source.
A; Terminology is not correct a transformer is not really a source but rather a device to transform one source of power to some power that can be used as required minus efficiency of power transfer
The purpose of the plug end in an electrical device is to connect the device to a power source, allowing electricity to flow into the device and power its functions.
a battery
The Source.
The terms "source" and "sink" could be used for inputs but are more commonly used for output terminals. If a device has a "source" output, it supplies current to an external device by connecting it to some power source. If the device is a "sink" it supplies current to some other device by draining it away to ground (often -ve). This is where the names "source" and "drain" came from in the naming of Field Effect Transistor terminals. Many devices have both "sink" and "source" capabilities such as most operational amplifiers. Most of the time the "sink" and "source" capabilities of such a device are different because N material conducts better then P material.
A Battery.
No, an electric device will not work if the power cord is not attached as it needs the electricity provided by the cord to function. Without the power cord, there is no source of electricity to power the device.
Yes, a directional coupler is a passive device that is used to split or combine signals in RF and microwave applications. It does not require any external power source for its operation.
A power drawn from a power source refers to the electrical energy consumed by a device or system to perform its intended function. This power is typically supplied by a source such as a battery, generator, or electrical grid, and is measured in watts.
yes it can actually everthing can be used as a power source