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Eletrical science

  1. Nov 10, 2008 #1
    1. The problem statement, all variables and given/known data
    A conductors in a cable are separated by a .35cm of insulation .

    2. Relevant equations

    Calculate the electric field strength within the insulation when the conductor voltage difference is 120v. Also determine the voltage@ which the insulation may break if its dielectric strength is 270kv/cm


    3. The attempt at a solution
    given
    voltage----120v
    conductor size ----.35cm
    dielectric strength 270kv
     
  2. jcsd
  3. Nov 11, 2008 #2
    Well that is an impressive attempt. Field strength can be calculated with a simple formula if we know voltage and distance between the conductors. Even dimension analysis might reveal that formula. Same formula will actually solve the second one too but this time the voltage is the variable.
     
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