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Homework Help: Electric field strength

  1. Dec 27, 2004 #1
    What is the electric field strength at a point in space where a proton experiences an acceleration of 1 million "g"?

    I'm completely lost on this one I know it's bound to be something simple but I just can't figure out where to start with it, well other than that 1 million "g" should be 9.8x10^6 m/s^2

    I'm also not quite sure, but I'm guessing this will have something to do with gravitational fields.
  2. jcsd
  3. Dec 27, 2004 #2


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    The question seems to infer that the proton is accelerated by the electric field.

    Think about the relationship of Force to the electric field strength and as a function of mass and acceleration.

    [tex]\vec{F} = m\vec{a} = q\vec{E}[/tex]
  4. Dec 27, 2004 #3
    okay, so I get...

    ma = (1.64x10^-21)/(1.6x10^-19) = 0.01N/C

    would that be right?
  5. Dec 27, 2004 #4


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    U missed one order of size:
    [tex] |\vec{E}|=\frac{m_{proton}|\vec{a}|}{q_{proton}} [/tex]
    [tex] |\vec{E}|=\frac{1.67\cdot 10^{-27}Kg\cdot 9.8\cdot 10^{6} ms^{-2}}{1.6\cdot 10^{-19}C}\sim 0,1N/C [/tex]

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