Problem 26.8: Find the value of the dielectric constant

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The animation shows a parallel-plate capacitor that has been charged and then disconnected from a battery so that the charge on the plate remains constant. The red and blue circles inside the plates represent the charge build up on the plate and the electric field vectors are also shown (position is given in meters, electric field strength is given in newtons/coulomb and electric potential is given in volts). A dragable dielectric (drag at the center) is below the capacitor. What is the value of the dielectric constant of the dielectric? Restart.

Problem authored by Anne J. Cox.