Department of Pre-University Education, KarnatakaPUC Karnataka Science Class 12
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# A Dielectric Slab is Inserted Between the Plates of a Capacitor. the Charge on the Capacitor is Q and the Magnitude of the Induced Charge on Each Surface of the Dielectric is Q'. - Physics

ConceptDielectrics and Polarisation

#### Question

A dielectric slab is inserted between the plates of a capacitor. The charge on the capacitor is Q and the magnitude of the induced charge on each surface of the dielectric is Q'.

• Q' may be large than Q.

• Q' must be larger than Q.

• Q' must be equal to Q.

• Q' must be smaller than Q.

#### Solution

Q' must be smaller than Q

The relation between the induced charge Q' and the charge on the capacitor Q is given by Q^' = Q(1-1/K)

Here, K is the dielectric constant that is always greater than or equal to 1.
So, we can see that for K > 1, Q' will always be less than Q.

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Solution A Dielectric Slab is Inserted Between the Plates of a Capacitor. the Charge on the Capacitor is Q and the Magnitude of the Induced Charge on Each Surface of the Dielectric is Q'. Concept: Dielectrics and Polarisation.
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