I'm sure my question is very simple to most of u guys. But I have the following confusion.(adsbygoogle = window.adsbygoogle || []).push({});

Let's say we have an AC voltage source in a circuit. In rectangular form it's phasor form is

v= -4 - 16 j .

I want to write this phasor in polar form. Well, The phasor is in 3rd quadrant of complex plane.

It's magnitude comes out to be 16.49

For phase angle,

[tex]\phi[/tex] = arctan (-16/-4) = 75.96◦

To shift 75.96 degrees from 1st quadrant to 3rd quadrant I can approach in 2 ways. like

[tex]\phi[/tex] = 75.96+ 180 = 255.96◦

or,

[tex]\phi[/tex] = 75.96- 180 = -104.04◦

Thereby in polar form, v can be written like either v= 16.49[tex]\angle255.96[/tex] or, v= 16.49[tex]\angle-104.04[/tex].

From mathematical point of view both the polar forms of v are ok.

My question is that from electrical engineering viewpoint which polar form is to be written i.e. which phase angle is preferred in practice 255.96◦ or -104.04◦?

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Confusion regarding to polar form representation of AC quantity

Loading...

Similar Threads for Confusion regarding polar |
---|

Question regarding filters |

Camera Lens works as a Polarizer or not? |

Confusion about Capacitors |

Regarding volume gain circuit |

**Physics Forums | Science Articles, Homework Help, Discussion**