Two parallel-plate capacitors, each of capacitance $$40\mu F$$, are connected in series. The space between the plates of one capacitor is filled with a dielectric of dielectric constant $$K=3$$, then the equivalent capacitance of the combination is?

$$120\mu F$$

$$40\mu F$$

$$160\mu F$$

$$30\mu F$$

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Solution

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Correct option is A. $$30\mu F$$

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