આકૃતિમાં દરેક પ્લેટનું ક્ષેત્રફળ A અને ક્રમિક પ્લેટો વચ્ચેનું અંતર આકૃતિમાં દર્શાવેલ મુજબનું છે, તો A અને B બિંદુઓ વચ્ચેનું અસરકારક કેપેસિટન્સ કેટલું હશે?

A \(\frac{2 \lambda \varepsilon_\theta}{d}\)
B \(\frac{A \varepsilon_0}{d}\)
C \(\frac{3 A \varepsilon_0}{d}\)
D \(\frac{4 A \varepsilon_0}{d}\)

Verified Solution

Answer & Solution

Correct Answer

(A) \(\frac{2 \lambda \varepsilon_\theta}{d}\)

Step-by-step Solution

Detailed explanation

(A)

સમતુલ્ય કેપેસિટન્સ
\(\begin{array}{l}C_{A B}=C_1+C_2+C_3 \\ C_{A B}=\frac{A \varepsilon_0}{2 d}+\frac{A \varepsilon_0}{d}+\frac{A \varepsilon_0}{2 d} \\ C_{A B}=\frac{4 A \varepsilon_0}{2 d} \\ C_{A B}=\frac{2 A \varepsilon_0}{d}\end{array}\)

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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