Physics · Electrostatic Potential and Capacitance
A parallel plate capacitor with air between the plates has a capacitance of C0 = 27 pF (1 pF = 10-12 F). If the distance between the plates is reduced to 45d, the area of the plates is tripled, and the gap between them is filled with a material of dielectric constant 12, the capacitance changes to C. What is the value of the ratio CC0?
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