Practice question · Numerical answer
A dielectric has electric susceptibility . Compute its relative permittivity.
Hints
- Relative permittivity is one plus the susceptibility.
- Compute 1 + 2.7.
Show the answer
3.7 (answers within ±0.05 count)
Why
, the value for paper. The 1 is the vacuum contribution, which is why can never fall below 1 for an ordinary dielectric.
Practise Dielectrics and Polarisation
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