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Make an electroMatnetic with formula

  1. Jul 19, 2011 #1
    i want to create an electromagnetic with rounding the wire such as ithttp://education.jlab.org/qa/em_02.jpg" [Broken]

    could you tell me how can i do it with formula?(because i want to calculate voltage , amper, Number of rounding and the material of wire)
    Last edited by a moderator: May 5, 2017
  2. jcsd
  3. Jul 19, 2011 #2
    you need to know the resistance of the wire either on a per-unit-length basis or simply measure the resistance of how much wire you are using. You need an ohm-meter for this.

    the relationship between voltage, amperes and resistance is this:

    V = IR

    V=voltage in volts
    I= current in amperes
    R = resistance in ohms

    If you are planning on using a 1.5V battery, then I = 1.5/R, for example.
  4. Jul 19, 2011 #3
    Thanks gsal
    i know the ohm equation
    i want to design a DC electronic magnate such as picture that you see.i need equation of calculation of my purpose.
  5. Jul 19, 2011 #4


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  6. May 1, 2012 #5
    could you tell me the relationship between B(magnetic filed) and F(Netwon)? i want to move an 2kg with magnetic force
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