A parallel plate capacitor of capacitance 
is connected to a battery of emf 
. If a dielectric material of dielectric constant 
is inserted between the plates, then magnitude of induced charge will be
Text Solution
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,
Let induced charge on the dielectric be 
The charge on the capacitor with dielectric medium,
Electric field inside the plates of capacitor due to charge 
Resultant electric ficld between the plates of capacitor after insertion of diclectric material,
Also, 
From Eqs. (i) and (ii), we get
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