openvellum.ecollege.com Course Home What Is The Electric Potenti... (287) YouTub

Question

openvellum.ecollege.com Course Home What Is The Electric Potenti... (287) YouTube [291) YouTube Barcelona vs Girona: Lengle. PHYS 212 - Fall 2018- PSU University Park Garcia | Course Home Mastering Physics PHYSICS HW04: Potential & Energy Problem 25.23-Enhanced with Feedback 6 of 12> Eberly College of Science 3 My Courses A 3.5-cm-diameter para lel-plate capacitor has a 2.4 mm spacing. The electric field strength inside the capacitor is 1.4x10 V/m Course Home Syllabus Assignments Scores Course Tools eText Study Area User Settings PartA What is the potential difference across the capacitor? Express your answer to two significant figures and include the appropriate units. You may want to review Pages 699-702) AVo 340 V Previous Ans Correct Here we learn how to determine potential difference across a capacitor Part B How much charge is on each plate? Express your answer to two significant figures and include the appropriate units. 2.03.10 4C Submit X Incorrect; Try Again; 4 attempts remaining

Explanation / Answer

part A:

potential difference=electric field*separation between plates

=1.4*10^5*2.4*0.001

=336 volts

in 2 significant figures, answer=340volts

part B:

let charge charge on each plate is Q.

then charge density=Q/area of the plate

=Q/(pi*radius^2)

as electric field in between plates of a parallel capacitor is given by charge density/electrical permittivity

==>electric field=Q/(pi*radius^2*epsilon)

==>Q=electric field*pi*radius^2*epsilon

=1.4*10^5*pi*(3.5*0.01/2)^2*8.85*10^(-12)

=1.1921*10^(-9) C

in 2 significant figures,

answer is 1.2*10^(-9) C

Related Questions

Navigate

• Browse (All)
• Browse O
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.