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# COULOMB

 A derived unit of quantity of electricity in the International System of Units; it is the quantity of electricity carried in 1 second by a current of 1 ampere.

## Related Terms

### VOLT

A derived unit of electric potential in the International System of Units, it is the difference of electric potential between two points of a conducting wire carrying a constant current of 1 ampere, when the power dissipated between these points is equal to 1 watt.

### OHM

A derived unit of electrical resistance in the International System of Units; it is the electrical resistance between two points of a conductor when a constant potential difference of 1 volt, applied to these points, produces in the conductor a current of 1 ampere, the conductor not being the seat of an electromotive force.

### AMPERE

The base unit of electric current in the International System of Units; it is that constant current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross section

### BARYE

The pressure unit of the centimeter-gram-second system of physical units; equal to 1 dyne per square centimeter (0.001 millibar). Also known as microbar.

### ILLUMINANCE

The luminous flux per unit of area. The derived unit of illuminance in the International System of Units is the LUX.

### VOLT PER METER

The derived unit of electric field strength in the International System of Units.

### INBOARD-OUTBOARD

A propulsion system with the motor mounted near the stern, coupled by a shaft to an external outboard drive unit. The components of this unit are similar to those of an outboard engine drive, having forward and reverse gears, a vertical shaft, and a propeller shaft.

### WEBER

A derived unit of magnetic flux in the International System of Units; it is that magnetic flux which, linking a circuit of one turn, would produce in it an electromotive force of 1 volt if it were reduced to zero at a uniform rate in 1 second.

### LUMINANCE

In a given direction, at a point on the surface of a source or receptor, or at a point on the path of a beam, the quotient of the luminous flux leaving, arriving at, or passing through an element of surface at this point and propagated in directions defined by an elementary cone containing the given directions, by the product of the solid angle of the cone and the area of the orthogonal projection of the element of surface on a plane perpendicular to the given direction. The derived unit of luminance in the International System of Units is the CANDELA PER SQUARE METER.

### GAUSS

The centimeter-gram-second electromagnetic unit of magnetic induction. It corresponds to 10-4 tesla in the International System

### Related questions

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