mot-, moto-, -motile, -motility, -motorial, -motoric, -motive, -motored; mov-

A lightweight type of electric locomotive used to haul loaded cars from working places to the main haulage road and to replace them with empty cars.

1. A train locomotive operated by electric power supplied from a third rail alongside or between the two track-guide rails or from an overhead wire system feeding a trolley.
2. A locomotive operated by electric power picked up from a system of continuous overhead wires, or, sometimes, from a third rail mounted alongside the track.

1. A device that converts electrical energy into mechanical energy using forces exerted by magnetic fields on current-carrying conductors.
2. An instrument that converts electrical power into mechanical torque or the force generated by an internal-combustion engine to turn a vehicle's drive shaft.

1. The motion of electricity or its passage from one metal to another in a voltaic circuit.
2. A mechanical action, motion, or force produced by an electric current.

1. Causing the movement of electric charges which result in the flow of electrical current.
2. Relating to or producing an electric current or electric action.
3. A reference to the passage of electricity in a current or a motion produced by it.

A list of elements arranged according to their standard electrode potentials, with noble metals; such as, gold, being positive and active metals, including zinc, being negative.

1. The pressure that causes electrons to move in an electrical circuit, measured as the amount of energy supplied by an electric current passing through a given source, as measured in volts.
2. The electric potential, or ability of electric energy to perform work.

Electromotive force is usually measured in joules per coulomb, or volts; and the higher the voltage, the greater the potential of electric energy.

Any device; such as, a storage battery, that converts some form of energy into electricity is a source of electromotive force or EMF or emf; or, a generator produces an electromotive force.

3. The difference in electric potential, or voltage, between the terminals of a source of electricity; such as, a battery from which no current is being drawn. When current is drawn, the potential difference drops below the emf value.
4. The force that causes a flow or the movement of electrons through an electrical circuit.

It is the amount of energy derived from an electric source in one second when one unit of current is passing through the source, commonly measured in volts.

Electromotive force is produced by differences in electrical charge or potential.

5. Energy per unit electric charge that is imparted by an energy source; such as, an electric generator or a battery.

When the device does work on the electric charge being transferred within itself, energy is converted from one form to another.

1. The classification of metals in the order of their electrode potentials.
2. A serial arrangement of metallic elements or ions according to their electrode potentials determined under specified conditions; the order shows the tendency of one metal to reduce the ions of any other metal below it in the series.
3. A series in which the metals and other substances are listed in the order of their chemical reactivity or electrode potentials, the most reactive at the top and the less reactive at the bottom.
4. A tabulation on which various substances; such as, metals or elements, are listed according to their chemical reactivity or standard electrode potential.

It is usually ordered with increasing standard electrode potentials (most negative on top).

For metals, the order indicates the tendency to spontaneously reduce the ions of any other metal below it in the series.

During electrolytic reduction of cations (for example, electroplating) an element lower in the series (more positive) will deposit first, and an element higher in the series (more negative) will deposit only when the solution is practically depleted of the ions of the first element.

The production of a flow of electricity.

An early form of a receiver for a telephone, invented by Thomas Alva Edison (1847-1931), an American inventor who patented more than a thousand inventions, among them the microphone (1877), the phonograph (1878), and an incandescent lamp (1879).

In New York City, he installed the world's first central electric power plant (1881-1882).

1. A machine producing electric current.
2. A motor run by electricity.

1. An electronic instrument which adjusts the speed of a DC (direct current) motor when it is driven by an AC (alternating current) power line.
2. A control circuit used to change or to vary the speed of a direct-current (DC) motor operated from an alternating-current (AC) power line.

Silicon controlled rectifiers or power transistors rectify or correct the voltage and vary the field current of the motor.