RUTHWELL, a parish, in the county of Dumfries containing the village of Clarencefield, 7Â½ miles (W. by N.) from Annan.
This is the basis of generation in rotating machines. You can produce a current in a conductor by connecting opposite ends to the + and-poles of a battery, but don't try this with your car battery or you will burn out the conductor and produce a lot of heat. It is safer to use a small dry battery.
In addition, electricity is at the heart of many modern technologies. The presence of an electric charge, which can be either positive or negative, produces an electric field. On the other hand, the movement of electric charges, which is known as electric current, produces a magnetic field.