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A parallel plate square capacitor with sides 10 cm in length are separated by a 3.0...

A parallel plate square capacitor with sides 10 cm in length are separated by a 3.0 cm gap. The capacitor is connected to a 9.0 V power supply. A dielectric, with dielectric constant κ = 3.0 is inserted between the plates while the capacitor remains connected to the power supply. What is the magnitude of electric field between the plates due solely to the polarization of the dielectric?

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Answer #1

Concept - The net electric field would be the sum of electric field due to polarisation and the electric field without dielectric. We use this to find the required value of the field solely due to polarisation of dielectric as shown below

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