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1.
A parallel plate capacitor with air as the dielectric has capacitance 
A slab of dielectric constant 
and having the same thickness as the separation between the plates is introduced so as to fill one-fourth of the capacitor as shown in the figure. The new capacitance will be
A slab of dielectric constant and having the same thickness as the separation between the plates is introduced so as to fill one-fourth of the capacitor as shown in the figure. The new capacitance will be
2.
In the given network, the value of 
, so that an equivalent capacitance between 
and 
is
, so that an equivalent capacitance between and is
3.
If the electric flux entering and leaving an enclosed surface respectively is 
and , then, charge enclosed in closed surface is
and , then, charge enclosed in closed surface is
4.
Three capacitors 2, 3 and 6 
are joined with each other. What is the minimum effective capacitance?
are joined with each other. What is the minimum effective capacitance?
5.
Effective capacitance between points 
in the figure, shown is
in the figure, shown is