A parallel plate capacitor of 6 mu F...

A parallel plate capacitor of 6 `mu F ` is connected across 18 V battery and charged. The battery is k = 2.1 is introduced between the plates. What will be the charge on capacitor ?

` 51.4 mu C `

`108 mu C `

`8.5 mu C `

`92.5 xx 10 ^ 2 C `

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