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What charge density must be applied to the floor to float a person with mass 50 kg and charge 1 micro Coloumb?

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A reasonable upper limit on the amount of charge that can be safely applied to a person is 1 micro Coloumb. What charge density must be applied to the floor to float a person with mass 50 kg and charge 1 micro Coloumb? Model the floor as an infinite plane with uniform surface charge density.

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The solution is presented with good explanation and formulas.

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Let the surface charge density be sigma coulomb/m^2

Therefore, Electric field E = sigma/epsilon
where, epsilon = ...

Solution provided by:
Amrit Lal Ahuja, PhD (IP)
Education
  • BEng, Allahabad University, India
  • MSc , Pune University, India
  • PhD (IP), Pune University, India
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