Electric power is the rate at which electrical energy is transferred by an electric circuit.
Electric power is usually sold by the kilowatt hour (3.6 MJ) which is the product of power in kilowatts multiplied by running time in hours.Electric utilities measure power using an electricity meter, which keeps a running total of the electric energy delivered to a customer. Electrical power provides a low entropy form of energy and can be converted into motion or other forms of energy with high efficiency Źródło: https://en.wikipedia.org/wiki/Electric_power
It turns out that without access to electricity in the car or not we could use the radio, or for example, from the wiper during adverse weather.
Electricity in cars is very common and more attention devoted its people planning the production of new car models.
Electric power is transformed to other forms of energy when electric charges move through an electric potential (voltage) difference, which occurs in electrical components in electric circuits.
The potential energy of the charges due to the voltage between the terminals is converted to kinetic energy in the device.
These devices are called passive components or loads; they 'consume' electric power from the circuit, converting it to other forms of energy such as mechanical work, heat, light, etc.Examples are electrical appliances, such as light bulbs, electric motors, and electric heaters.
In alternating current (AC) circuits the direction of the voltage periodically reverses, but the current always flows from the higher potential to the lower potential side. Active devices or power sources: If the charges are moved by an 'exterior force' through the device in the direction from the lower electric potential to the higher, (so positive charge moves from the negative to the positive terminal), work will be done on the charges, and energy is being converted to electric potential energy from some other type of energy, such as mechanical energy or chemical energy.Devices in which this occurs are called active devices or power sources; such as electric generators and batteries. Some devices can be either a source or a load, depending on the voltage and current through them. For example, a rechargeable battery acts as a source when it provides power to a circuit, but as a load when it is connected to a battery charger and is being recharged.Źródło: https://en.wikipedia.org/wiki/Electric_power#Explanation.