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HW5-problems-1

# HW5-problems-1 - aliu(fa5484 HW5 mackie(20225 This...

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aliu (fa5484) – HW5 – mackie – (20225) 1 This print-out should have 22 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. NOTE TUES DEADLINE! 001 10.0points A spherical capacitor consists of a conducting ball of radius 7 cm that is centered inside a grounded conducting spherical shell of inner radius 11 cm. What charge is required to achieve a potential of 754 V on the ball of ra- dius 7 cm? The Coulomb constant is 8 . 98755 × 10 9 N · m 2 / C 2 . Answer in units of C. 002 10.0points An air-filled cylindrical capacitor has a capac- itance of 8 pF and is 4 cm in length. The coulomb constant is 8 . 98755 × 10 9 N · m 2 / C 2 . If the radius of the outside conductor is 2 . 4 cm, what is the required radius of the inner conductor? Answer in units of cm. 003 10.0points A 11 . 5 V battery is connected to a 7 . 9 pF parallel-plate capacitor. What is the magnitude of the charge on each plate? Answer in units of C. 004 10.0points A parallel-plate capacitor is made by placing polyethylene ( κ = 2 . 3) between two sheets of aluminum foil. The area of each sheet of aluminum foil is 430 cm 2 , and the thickness

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HW5-problems-1 - aliu(fa5484 HW5 mackie(20225 This...

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