If the oil light comes on when you're on the road, you should pull over as soon as it's safe and turn the engine off. While you're on the side of the road, you should check the oil. If it's low, go ahead and add some engine oil and see if it goes off. If not, it's time to take it to the shop.
Part of the Smart grid glossary: An ampere hour (abbreviated Ah, or sometimes amp hour) is the amount of energy charge in a battery that will allow one ampere of current to flow for one hour. An ampere is a unit of measure of the rate of electron flow or current in an electrical conductor.
For other uses, see Ampere (disambiguation) . The ampere (SI unit symbol: A), often shortened to amp, is the SI unit of electric current (dimension symbol: I) and is one of the seven SI base units.he ampere was originally defined as one tenth of the unit of electric current in the centimetreâgramâsecond system of units; that unit, now known as the abampere, was defined as the amount of current that generates a force of two dynes per centimetre of length between two wires one centimetre apart.