Electric cars are powered by electricity, which is stored in batteries. The battery powers an electric motor, which turns the wheels.
Most electric cars have one or more onboard chargers that convert AC power from the grid into DC power for the battery. The charger is usually located near the front of the car, underneath a removable panel. To charge an electric car, you simply plug it into a standard outlet using the charging cable that came with the car. Depending on the size of the battery and whether you're using a Level 1 or Level 2 charger, it can take anywhere from 3-8 hours to charge an electric car fully.
Some newer electric cars also come with wireless charging capabilities, which allow you to charge your car without having to plug it in. Wireless charging stations use magnetic induction to transfer energy between two coils - one in the station and one in the car - to charge the battery. These types of charging stations are still fairly rare, but they're becoming more common as demand for electric cars grows.