Question

A parallel-plate capacitor is made from two aluminum-foil sheets, each 6.5 cm wide and 6.3 m long. Between the sheets is a Teflon strip of the same width and length that is 3.4×10−2 mm thick. What is the capacitance of this capacitor? (The dielectric constant of Teflon is 2.1.) Answer tried was incorrect.

Review ▼ Part A A parallel-plate capacitor is made from two aluminum-foil sheets, each 6.5 cm wide and 6.3 m long. Between the sheets is a Teflon strip of the same width and length that is 3.4x10-2 mm thick What is the capacitance of this capacitor? (The dielectric constant of Teflon is 2.1.) Express your answer using two significant figures. 2.2.1013 LF Submit Request Answer

Answer 1

capacitance is given by

C = k eo A / d

C = 2.1* 8.85* 10^-12* 0.065* 6.3 / (3.4* 10^-2* 10^-3)

C = 2.238* 10^-7

C = 0.224 uF

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