Plates of capacitors and dielectric constant

[gracy]

In my textbook it is written that
Electric charge on plates of capacitors (without dielectric ) is Q=CV
And when dielectric is inserted in the space between plates of capacitors .charge Q remains the same whereas values of C and V change.
i.e Q=C'V'
is it correct?

 

[Raghav Gupta]

In my textbook it is written that
Electric charge on plates of capacitors (without dielectric ) is Q=CV
And when dielectric is inserted in the space between plates of capacitors .charge Q remains the same whereas values of C and V change.
i.e Q=C'V'
is it correct?

Yes.
Do you know conservation of charges?
You might have studied in electrostatics?

 

[jtbell]

Yes, provided that the capacitor is isolated (i.e. not connected to a circuit) so no charge can enter or leave the plates.

 

[gracy]

Yes.

Yes, provided that the capacitor is isolated (i.e. not connected to a circuit) so no charge can enter or leave the plates.

Thanks a lot for quick reply.