10 13 2 q5 polarisation charge in a dielectric two parallel plates hav
Q5. Polarisation charge in a dielectric
Two parallel plates have equal and opposite charges. When the space between the plates
is evacuated, the electric field is E, = 3.20 x 105 V/m.
When the space is filled with dielectric, the electric field is Ea = 2.50 x 105 V/m.
a) What is the dielectric constant?
b) What is the value of the induced or polarisation Electric field?
c) What is the surface charge density produced by this polarization field? Assume the
charge is uniformly distributed on each surface of the dielectric.
d) What is the surface charge density on the capacitor plates?
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