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Seven capacitors each of capacitance 2mu...

Seven capacitors each of capacitance `2muF` are to be connected in a configuration to obtain an effective capacitance of `(10/11)muF`. Which of the combination (s) shown in figure will achieve the desired result?

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
A
(a)
`rarrC_(eq)=(10xx1)/(10+1)=(10)/(11)muF`
(b)
`rarrC_(eq)=(8xx(2)/(3))/(8+(2)/(3))=(16)/(26)muF`

`rarrC_(eq)=(6xx(1)/(2))/(6+(1)/(2))=(6)/(13)muF`
(d)
`rarrC_(eq)=(4xx(2)/(5))/(4+(2)/(5))=(8)/(22)muF`
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