AC VOLTAGEWhat is AC VOLTAGE? Voltage is a unit of Electrical Pressure. It's the measurement of Electromotive Force of the Pressure of Electricity. Voltage is the force that pushes Electrical Current though a conductor. This is loosely analogous to pressure in a water line as in pounds per square inch. See Volt Amp Watt animations. See filament bulb volt re-rating. Electrical Pressure is not really a pressure as pressure is commonly understood. Electricity doesn't pour out of a wire onto the ground like a garden hose. Voltage rating of an incandescent bulb is the voltage that bulb is designed to operate in the circuit measured at the base of the bulb and in which published data for watts, amps, lumens, Color Temperature and Life Hours are measured at. Incandescent bulbs can be used with AC Voltage or DC Voltage, but DC Voltage produces increased notching on filament which reduces the life quicker than AC Voltage. In non-incandescent bulbs the voltage may be referred to as either the operating voltage, or, the starting voltage of that bulb. DC Voltage is direct current type of voltage, where one power terminal is positive "+" and the other terminal is negative "-". Electrons flow from the positive to negative terminal. AC Voltage is alternating current type of voltage, were each power terminal takes turns alternating at being positive and negative. In USA, the frequency standard for AC volt power lines is 60 cycles (times) alternating per second, and averages around 120 volts. In Europe the frequency standard for AC volt power lines is 50 cycles per second, and averages around 240 volts. AC is much more efficient at transmitting power over long distances. Also, higher voltages are more efficient to transmit over long distances. Electrical Pressure is an energy potential between two conductors of a an Electrical Circuit. This difference of Electrical Pressure is defined and rated in volts. To calculate the voltage; if you know the wattage and amperage of the circuit, then voltage equals wattage divided by amperage (volt = watt / amp). One volt is equal to performing one joule of work to move or separate one coulomb of electrons. The volt is named after Allesandro Volta, a professor of physics at the university of Pavia in Italy, in year 1800. references for this page: VOLT, AC VOLTAGE, BULB VOLTAGE, DC VOLTAGE, ELECTRICAL PRESSURE, PRESSURE OF ELECTRICITY, VOLTAGE, VOLTS references to this page: AMP, BALLAST, BREAKDOWN VOLTAGE, CHARACTERISTIC CURVES, CONVERSION TABLE, DARK-EFFECT, ELECTROMAGNETIC BALLAST, ELECTROMOTIVE FORCE, ELECTROMOTIVE POTENTIAL, FILAMENT, GLOW LAMP, HALOGEN BULB, HOURS, LIGHT LOSS FACTOR, MAINTAINING VOLTAGE, MEAN SPHERICAL CANDLEPOWER, RE-RATE, VOLTAGE RATING, VOLT AMP WATT ANIMATIONS, WATT |