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Grade 11Electrostatics

A capacitor is made of a flat plate of area A and a second plate having a stair like structure as shown in figure. The width of each stair is a & the height is b . FIND THE CAPACITANCE OF THE ASSEMBLY.

Profile image of Deep Chandra
14 Years agoGrade 11
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2 Answers

Profile image of sonal gupta
ApprovedApproved Tutor Answer14 Years ago

the given arrangement of the flat plate and staircaselike structure is equivalent to the parallel combinatio of 3 cap.c1 c2 c3. the plate area of each of the 3 cap. is a/3 ,while the seperation between the plate of 3 cap. is d 2d 3d soooooooo answer will be 

C =11 upsilon A/18d

Profile image of Tanya
8 Years ago
​ε○A/3d +. ε○A/3(b+d) +  ε○A/3(2b+d)
Solve it further by taking  ε○A/3 common from the given equation the final answer u got is ε○A(3d2+6bd+2b2)/3d(b+d)(2b+d)
 

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