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If you take instantaneous measurements of an AC voltage you will see it vary from a plus value to a minus value. In typical power applications it is a waveform that looks like a sine wave. Google "sine wave" to see a picture. The frequency for U.S.A. AC is 60 Hz. This means that 60 times a second the voltage will start at zero transition to a maximum positive voltage then go back to zero and to a maximum negative voltage and then back to zero.
DC is a constant voltage no matter when you measure. It is simply a straight line when compared to an oscillating AC voltage waveform.
What else can I help you with?
What is the difference between AC and DC choke?
There is no difference between AC AND DC chockes
What is the difference between ac and dc grounding?
The difference AC and DC grounding is that AC is alternate current and DC is direct current. Grounding for both AC and DC is the same.
What is the different between ac dc motors?
DC Motor works on DC source and AC motor works on AC source
What the difference between AC and DC?
AC rises with respect to time but DC is steady.
What is the difference between in ac and dc powwer cable?
There is no difference in the cables. The only difference is the type of electrical power being transmitted. AC or DC applications use the same wires.
Is DC is at low voltage than ac?
There's no correlation between the voltage, the current, and whether the source is AC or DC.
What is the difference between ac ammeter and dc ammeter?
dc ammeter has three connecting pins while ac has four
What is main difference between ac power and dc power?
AC power is made by alternating current and DC does not change.
What is the difference between a voltage converter and a voltage inverter?
Converter is AC to DC. Inverter is DC to AC
What is AC motor and DC motor?
AC stands for alternating current, and DC is direct current. A motor is a device that uses electrical energy to spin. An AC motor uses AC voltage, and a DC motor uses DC voltage. http://ezinearticles.com/?The-Difference-Between-AC-and-DC-Electric-Motors&id=193767
What makes a dc bulb different from an ac bulb?
The voltage source that is applied to them is the difference between AC and DC light bulbs.
What is the difference between rectifier and converter?
A rectifier converts AC voltage into DC voltage. A converter is something more general. It describes not only rectifiers, but also devices that can turn DC into AC or perform DC-to-DC or AC-to-AC conversion.
