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Math Help - Dc and diagram

  1. #1
    Junior Member
    Joined
    Sep 2007
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    29

    Dc and diagram

    edit not DC but AC, please help
    Last edited by JBswe; January 25th 2008 at 07:51 AM.
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  2. #2
    Junior Member
    Joined
    Sep 2007
    Posts
    29

    AC problem

    In a AC circet the current is i=i*sinWt where i=2.0*10^-3 and W=2pi*f and f=50Hz. i=i the second i has a little hat on it, dont know the symbol

    I'am to write a diagram where the interval
    0s<(or equal to)t<(or equal to)0.02s

    I wrote a diagram from these values i found, can someone please check and see if i did the math correctly, am a little unsure if i should have my calc set to degree's or rads

    i=2.0*10^3*sin(2pi*0*50) = 0
    i=2.0*10^3*sin(2pi*0.01*50) = 1.1
    i=2.0*10^3*sin(2pi*0.02*50) = 2.2
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