Question 1 The figure shows a parallel plate capacitor, where the top plate is positively charged...

 

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Question 1 The figure shows a parallel plate capacitor, where the top plate is positively charged and the bottom plate is negatively charged. There are three different dielectrics, with thickness t₁, t2 and t3 and dielectric constant K₁, K2 and 3 respectively. As shown, t₁+t2 + t3 = d. All the dielectric plates have the same area A as the capacitor plates. a Using the idea of electric dipole and polarization vector, find the net electric field inside a dielectric material as a function of external electric field Eo and K. b Calculate the potential difference between the upper and lower plate of the capacitor and hence find the capacitance. c If K₁=k₂=K3=1, then show whether this configuration is equivalent to a parallel plate capacitor with no dielectric inside. 5 6+2 3 Question 1 The figure shows a parallel plate capacitor, where the top plate is positively charged and the bottom plate is negatively charged. There are three different dielectrics, with thickness t₁, t2 and t3 and dielectric constant K₁, K2 and 3 respectively. As shown, t₁+t2 + t3 = d. All the dielectric plates have the same area A as the capacitor plates. a Using the idea of electric dipole and polarization vector, find the net electric field inside a dielectric material as a function of external electric field Eo and K. b Calculate the potential difference between the upper and lower plate of the capacitor and hence find the capacitance. c If K₁=k₂=K3=1, then show whether this configuration is equivalent to a parallel plate capacitor with no dielectric inside. 5 6+2 3

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a net electric field inside a dielectric material Eo Z Eo K external electric field ... View the full answer