Adielectricofwidthx04is insertedintothegapasshown

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Calculation Calculation V x0 C0 V κ x0/4 Calculate new capacitance C Apply definition of capacitance to determine Qf To calculate C, let’s first look at: Vleft κ Vright (A) Vleft < Vright (B) Vleft = Vright (C) Vleft > Vright 40 capacitance C0 and width x0 is connected to a battery of voltage V. A dielectric (κ) of width x0/4 is inserted into the gap as shown. • Strategic Analysis: – – BB An air­gap capacitor, having The conducting plate is an equipotential !! What is Qf, the final charge on the capacitor? An air­gap capacitor, having capacitance C0 and width x0 is connected to a battery of voltage V. Calculation Calculation V x0 C0 V BB κ x0/4 Can consider capacitor to be two capacitances, C1 and C2, in parallel κ = C1 κ C2 What is C1 ? (A) C1 = C0 (B) C1 = 3/4C0 (C) C1 = 4/3C0 (D) C1 = 1/4C0 43 In general. For parallel plate capacitor: C = ε0 A/d A = 3/4A0 C1 = 3/4 (ε0A0/d0) d = d0 C1 = 3/4C0 A dielectric (κ) of width x0/4 i inserted into the gap as shown What is Qf, the final charge on the capacitor? Calculation Calculation V x0 C0 V An air­gap capacitor, having capacitance C0 and width x0 connected to a battery of voltage V. κ BB A dielectric (κ) of width x0/4 inserted in...
View Full Document

This document was uploaded on 02/13/2014.

Ask a homework question - tutors are online