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larisa [96]
3 years ago
10

Two capacitors give an equivalent capacitance of 9.42 pF when connected in parallel and an equivalent capacitance of 1.68 pF whe

n connected in series. What is the capacitance of each capacitor?
Physics
1 answer:
gavmur [86]3 years ago
5 0

Answer:

C_1=7.23pF\ and\ C_2=2.19pF

Explanation:

Let the two capacitance are C_1\ and\ C_2

It is given that when capacitors are connected in parallel their equvilaent capacitance is 9.42 pF

So C_1+ C_2=9.2--------EQN 1

And when they are connected in series their equivalent capacitance is 1.68 pF

So \frac{1}{C_1}+\frac{1}{C_2}=\frac{1}{1.68}

\frac{C_1+C_2}{C_1C_2}=\frac{1}{1.68}

C_1C_2=1.68\times 9.42=15.8256pF

C_1-C_2=\sqrt{(C_1+C_2)^2-4C_1C_2}=\sqrt{9.42^2-4\times 15.8256}=5.0432pF-----EQN

On solving eqn 1 and eqn 2

C_1=7.23pF\ and\ C_2=2.19pF

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