A capacitor is made of a flat plate of area A and a second plate of stair-like structure as shown in the figure. The area of each stair is 
and the height is d. The capacitance of the arrangement is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
3 capacitors have been arrange like this with capacitances 
respectively.
For parallel plate capacitors capacitance 
Capacitance of capacitor 
Capacitance of capacitor 2, 
Capacitance of capacitor 
Net cpacitance 
.
Hence, the capacitance of the arrangement is 
.
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