Question

A cylindrical capacitor consists of a solid inner conducting core with radius 0.280 cm, surrounded by an outer hollow conducting tube.


A cylindrical capacitor consists of a solid inner conducting core with radius 0.280 cm, surrounded by an outer hollow conducting tube. The two conductors are separated by air, and the length of the cylinder is 13.5 cm. The capacitance is 39.0 pF.  


Part A

Calculate the outer radius of the hollow tube.  

Part B

When the capacitor is charged to 130 V, what is the charge per unit length lambda on the capacitor? 

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