# What is a phasor

by azolotor
Tags: phasor
 P: 9 Could someone please give me an explanation of what we mean we say phasor please. We went over phasors in class today and I understood all the manipulations we were doing for superposition but my professor mentioned phasors and never said what they were. I have looked up several definitions but it isn't gelling for me. Thanks in advance!
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P: 6,684
 Quote by azolotor Could someone please give me an explanation of what we mean we say phasor please. We went over phasors in class today and I understood all the manipulations we were doing for superposition but my professor mentioned phasors and never said what they were. I have looked up several definitions but it isn't gelling for me. Thanks in advance!
Was he talking about Star Trek or electricity?

Phasors are vectors drawn in a circle to represent the phase differences of alternating current or voltages so that values can be calculated.

AM
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Thanks
P: 5,473
 Quote by azolotor Could someone please give me an explanation of what we mean we say phasor please.
A phasor is a rotating vector. In 99.9% of your course of study you can neglect the fact that they rotate; just manipulate them like ordinary vectors. They rotate because a sinewave can be represented by the projection of a rotating vector onto a chosen axis.

 P: 9 What is a phasor Thanks so much! Much clearer now.

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