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Q.

A capacitor connected to a 10 V battery collects a charge $40 μC$ with air as dielectric and $100 μC$ with oil as dielectric. The dielectric constant of oil is

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a

2

b

10

c

2.5

d

4

answer is B.

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Detailed Solution

Initially, $CV = 40$
Finally, $KCV = 100$

$K = \frac{100}{40} = 2.5$

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A capacitor connected to a 10 V battery collects a charge 40μC with air as dielectric and 100μC with oil as dielectric. The dielectric constant of oil is