A Capacitor Is Made by Taking Two Sheets of Aluminum

question 77

Multiple Choice

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 520 sheets,the ream being 5.3 cm thick with sheets measuring 216 mm by 279 mm (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? (ε₀ = 8.85 × 10^-12 C²/N × m²)

• A) 33 nF
• B) 45 nF
• C) 19 nF
• D) 1.5 nF
• E) ​5 nF

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