Electrostatics
The dielectric constant of vacuum is
A) 1
B) 0
C) 8
D) -1
The dielectric constant of air is approximately
A) 1
B) 1.0006
C) 2
D) 3
The dielectric constant of water is about
A) 80
B) 60
C) 40
D) 20
The dielectric constant of mica is about
A) 3
B) 5
C) 7
D) 9
Gauss's law states that the electric flux through a closed surface is equal to
A) $\frac{1}{\epsilon_{0}}$ times the charge enclosed
B) $\epsilon_{0}$ times the charge enclosed
C) $\frac{1}{\epsilon_{0}}$ times the total charge
D) $\epsilon_{0}$ times the total charge
The electric flux through a closed surface is zero if
A) No charge is enclosed
B) The net charge enclosed is zero
C) Both A and B
D) Neither A nor B
The electric field due to an infinite plane sheet of charge is
A) $\frac{\sigma}{2\epsilon_{0}}$
B) $\frac{\sigma}{\epsilon_{0}}$
C) $\frac{2\sigma}{\epsilon_{0}}$
D) $\frac{\sigma}{4\epsilon_{0}}$
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