Voltage, is is the difference in potential between two points in an electric field. also called electromotive force. voltage is the pressure from an electrical circuit’s power source that pushes charged electrons (current). grater the voltage grater the flow of electric current. Voltage is symbolized by V or E . The standard unit is the volt. One volt will drive one columb (6.24 x 10 18 ) charge.such as electronics through a resistance of one ohm. Voltage can be direct or alternating. A direct voltage maintains the same polarity. In an alternating voltage, the polarity reverses direction periodically. The number of complete cycles per second is the frequency which is measured in hertz.
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