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【段考】高二英文
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111年 - 1102第一次期中考英二英文Lesson 4#110198
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#471712
a. (5%) For the inductance, which term drops off at high frequencies? Why?
#471713
b. (5%) The characteristic impedance is defined as, find out the characteristics impedance at high frequencies, and please indicate the unit for it. 新告+
#471714
a.(5%) The dielectric constant for Teflon is 2; it is a low one for a dielectric material. What is the dielectric constant for air?
#471715
b.(5%) What is the dielectric constant for a metal, for example, Copper?
#471716
c.(5%) The relative permeability for Steel is 100, and is frequency dependent. What is the relative permeability for Copper?
#471717
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