Question: 1*) A thin cylindrical metal shell of radius R1 = 6.5cm is surrounded by a second cylindrical metal shell of variable radius R2, as

1*) A thin cylindrical metal shell of radius R1 = 6.5cm is surrounded by a second cylindrical metal shell of variable radius

1*) A thin cylindrical metal shell of radius R1 = 6.5cm is surrounded by a second cylindrical metal shell of variable radius R2, as shown in the figure. Both cylinders are 5.0 m long and are metals. The inner one carries a total charge Q1 = 9.0C and the outer one carries a total charge Q2 = -Q1. The dielectric constant for the medium between the cylinders is k=1.2. Consider all other regions (outside etc.) to be filled with air. Derive an approximate formula for the capacitance of the object, then sketch C vs R2. R2 R/R

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