Electric Equations

ast3r3xast3r3x
Posted:
in General Discussion edited January 2014
Does anyone know any equations to:



Watts <---> Ohms

Watts <---> Volts

Watts <---> Amps

Ohms <---> Volts

Ohms <---> Amps

Volts <---> Amps

Comments

  • Reply 1 of 11
    ghost_user_nameghost_user_name Posts: 22,667member
    Not possible. You need at least two of the variables.



    Here are a the equations of Ohm's Law:



    E = (WR)

    E = (W/I)

    E = IR



    I = (E/R)

    I = (W/E)

    I = (W/R)



    R = (E/I)

    R = (W/(I^2))

    R = ((E^2)/W)



    W = EI

    W = (I^2)R

    W = ((E^2)/R)



    where: E is Volts, I is Amps, R is Ohms, and W is Watts.
  • Reply 2 of 11
    ast3r3xast3r3x Posts: 5,012member
    Thank you so much, i love u for this! (as much as possible in a hetero, non sexual in any way type of course)
  • Reply 3 of 11
    nebagakidnebagakid Posts: 2,692member
    MajorMatt? he has a program that does a lot of conversiomns <img src="graemlins/smokin.gif" border="0" alt="[Chilling]" /> <img src="graemlins/smokin.gif" border="0" alt="[Chilling]" /> <img src="graemlins/smokin.gif" border="0" alt="[Chilling]" />
  • Reply 4 of 11
    snoopysnoopy Posts: 1,901member
    [quote]Originally posted by Nebagakid:

    <strong>MajorMatt? he has a program that does a lot of conversiomns <img src="graemlins/smokin.gif" border="0" alt="[Chilling]" /> <img src="graemlins/smokin.gif" border="0" alt="[Chilling]" /> <img src="graemlins/smokin.gif" border="0" alt="[Chilling]" /> </strong><hr></blockquote>



    You only need two, E = IR and P = EI, and the rest just fall out as you move things around.



    P is power, measured in Watts.

    E is electromotive force, measured in Volts.

    I is current, measured in Amperes.

    R is resistance, measured in Ohms.



    Never could figure out why they picked "I" to mean current?
  • Reply 5 of 11
    stroszekstroszek Posts: 801member
    This site is VERY helpful. Or at least I think so.

    <a href="http://www.onlineconversion.com"; target="_blank">Online Conversion.</a>
  • Reply 6 of 11
    darren smithdarren smith Posts: 26member
    [quote] Never could figure out why they picked "I" to mean current? <hr></blockquote>



    One school of thought suggests that the letter I was chosen to represent "Intensity" (of electron flow).
  • Reply 7 of 11
    soulcrushersoulcrusher Posts: 587member
    snoopy, nobody calls it electromotive force anymore. It is generally refered just as Emf because physicists later figured out a flaw in its name... the abreviated name still holds though.



    Just call it potential difference or voltage. Much simpler.
  • Reply 8 of 11
    eskimoeskimo Posts: 474member
    Do they actually teach using the symbol E anymore? All my texts in college used V except when explaining what V was and then they used the capital fancy pants cursive E for emf. Just surprised to see it, that's all.
  • Reply 9 of 11
    majormattmajormatt Posts: 1,077member
    Hey,



    I made a Physics calculation program, it includes an electricity section, a resistor circuit analysis tool, and a resistor color band calculator that you may find useful. It may be downloaded here:



    <a href="http://homepage.mac.com/praetersoftware/testversion.sit"; target="_blank">Downloads Physics 101 Here</a>
  • Reply 10 of 11
    spartspart Posts: 2,060member
    Maybe the I is some referecne to Latin?



    I find that a lot of odd naming schemes have roots in Latin...a language that I don't know but wish I did.



    <img src="graemlins/hmmm.gif" border="0" alt="[Hmmm]" />
  • Reply 11 of 11
    majormattmajormatt Posts: 1,077member
    I found out why it is "I"



    The simple reason is that, they ran out of letters!



    However, if you need a deeper reason, they may use "I' because current is from the french word "intensité"
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