HW__6_P213_S08 - Physics 213 Read: Homework #6 Spring 2007...

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Physics 213 Homework #6 Spring 2007 Read: Chapter 24, intro., sections 24.1 thru 24.5 Chapter 26, section 26.4 For practice: Chap. 24: Q's #Q24.1, 4-9, 11-13, 15, 17, 18 E's & P's: #24.7, 9, 13, 15, 21, 25, 27, 37, 65, 73, 77 Chap. 26: Q's #Q26.19, 21 E's & Ps: #26.41, 49, 87 To be prepared for your 2nd recitation the week of Mar. 5-7: #24.14 [Capacitor Network] #24.60 [Throw the Switch] #24.66 [Capacitor + Metal Slab] 1. ["Build-a-Cap"] A capacitor is constructed out of two sheets of aluminum foil and three sheets of paper in the form of a double-decker sandwich, as shown. The foil sheets are 17 cm x 24 cm in size and 0.050 mm thick, while the paper sheets are 21cm x 28 cm in size and 0.10 mm thick. The paper has dielectric constant 1.5 and dielectric breakdown strength 7.0 x 10 6 V/m (the electric field needed to produce a spark though the paper). Electrode wires are attached to the two foil sheets, and then all the sandwich layers are pressed tightly together. (a) What is this capacitor's capacitance? What maximum voltage can it sustain without under going dielectric breakdown? Be sure your reasoning is clear. (b)
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HW__6_P213_S08 - Physics 213 Read: Homework #6 Spring 2007...

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