Item 5 Consider a parallel-plate capacitor which uses Tefion, which has a dielec

Question

Item 5 Consider a parallel-plate capacitor which uses Tefion, which has a dielectric constant of 2.10 and a dielectric strength of 60.as the dielectric. The capacitor has rectangular plates which are rolled together with MV m s the dielectric between them. Part A A capacitor with a breakdown voltage of 14.0 k V needs to be made. what thickness of teflon shoudl be used? Give a numerical answer in micrometers. am Submit My Answers Give Up Part B If the plates are 1.85 cm wide, how long, in cm, must they be in order to have a capacitance of 230. pF? cn Submit My Answers Give Up Provide Feedback Continue

Explanation / Answer

partA ] thickness d = V/E = 14000/60e6

= 0.000233 m

= 233 um

partB]. capacitance = KAe0/d

230e-12 = 2.1*0.0185*L*8.85e-12/233e-6

L = 230e-12*233e-6/[8.85e-12*2.1*0.0185]

= 0.156 m

= 15.6 m answer

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