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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 
.
