Two parallel plates are separated by a gap of width
d_(0)
that is filled with a dielectric material of constant
\kappa =2
. Suppose the dielectric material is removed and the spacing of the plates is changed to a new value
d_(1)
, such that the capacitance
C
of the device remains the same. How does
d_(1)
compare to
d_(0)
?
d_(1)=(1)/(4)d_(0)
d_(1)=(1)/(2)d_(0)
d_(1)=2d_(0)
d_(1)=4d_(0)