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2. Electric potential and capacitance — Physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 SciencePhysics2. Electric potential and capacitance1 Mark
MCQ
Four identical rectangular plates with length, $l=2\, cm$ and breadth, $b =\frac{3}{2}\, cm$ are arranged as shown in figure. The equivalent capacitance between $A$ and $C$ is $\frac{ x \varepsilon_{0}}{ d } .$ The value of $x$ is (Round off to the Nearest Integer)
  • A
    $0$
  • B
    $1$
  • C
    $4$
  • ✓
    $2$
✓

Answer

Correct option: D.
$2$
d
$C _{ eq }=\frac{2 C _{0}}{3}=\frac{2}{3} \frac{ \in _{0} A }{ d }$

$C _{ eq }=\frac{2 \in_{0}}{3 d } \times\left(2 \times \frac{3}{2}\right)=2\left(\because A =1 b =2 \times \frac{3}{2}\right)$981-s594

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