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and spaced 1 mm apart, form a capacitor. Calculate the capacitance of the capacitor.
)
. The shell is also charged with the same charge size but the opposite sign. The radius of the metal ball is 2 cm and the radius of the outer shell is 13 cm.
each is charged with a charge 
. Calculate the distance between the plates.
)
. The distance between the plates is 
and the area of each plate is 
. The permittivity of free space is given as 
.
and 
.
and 
.
, 
and 
are connected in series and to a voltage source of 150 V. Calculate the voltage across each of the capacitors.
and 
are connected in series. What must be the capacitance of the third capacitor connected in parallel to the series-connected capacitors to get a combined capacitance of 
?
