Voltage x current. In a resistor for example it is the voltage drop across it that is relevant, it may be part of a circuit.
Electrical outlets
To mostly get electrical power
Electrical energy
Electrical energy is the type of kinetic energy that powers a cell phone. When you charge your phone, electrical energy is stored in the battery and converted to power the device when in use.
we can use the electromagnetic waves to transmit the electrical powers without the cables. But it is very difficult.
Electrical energy results in a flow of electrons. This flow of electrons is what powers electronic devices and electrical systems.
It powers the wires, thus powering the light or sound buzzer.
steam powers a turbine which drives a generator to produce electrical power
movement of electrical charges
An alarm clock typically produces electrical energy. The electrical energy powers the clock's circuits and display, allowing it to function.
When you watch TV, electrical energy is being converted into light energy and sound energy. The electrical energy powers the screen, which emits light for you to see, and it also powers the speakers, which produce sound waves for you to hear.
Typically DC is what you get in a battery and AC is what powers your house.