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38. A capacitor is made by taking two sheets of aluminum foil, each 0.022 mm thick and placing between them a sheet of paper which comes from a ream of 580 sheets, the ream being 5.4 cm thick with sheets measuring 216 mm by 279 mm Page 6 (the usual 8 1/2 by 11). What is the capacitance of the capacitor made this way if the dielectric constant of the paper is 3.7? (eo = 8.85 x 10-12 C2/N m 2) a. 33 nF b. 45 nF c. 21 nF d. 1.4 nF e. 5.7 nF

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