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1. Two parallel conducting circle plates with radiuses of 35.4 centimeters are separated by 32μm thick...

1. Two parallel conducting circle plates with radiuses of 35.4 centimeters are separated by 32μm thick layer of dielectric material. The plates in this configuration store 8.4 μC of charge at 12.4 V of potential.

A)What is the dielectric constant of the material between the plates?

B) how much energy is added to the capacitor if plate separation is increased so that the voltage is now 51 V. (Assume the capacitor is disconnected from the battery so that its charge remains constant, and that the added space is filled with the same dielectric material as before in part A)

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