ps6 - x . (d) Calculate the value of the capacitor for W =...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
UNIVERSITY OF CALIFORNIA College of Engineering Department of Electrical Engineering and Computer Sciences EE 42 / 100 Problem Set 6 Spring 2008 1. A 1 μ F capacitor is charged to 1 V. What is the charge stored on the capacitor? State your result in number of electrons. 2. A parallel plate capacitor is used to measure the fluid level in a tank. It consists of two plates mounted vertically in the fluid tank and spaced by a gap g . The width and height of the plates are W and H , respectively. (a) What is the capacitance when the tank is empty (i.e. filled with air, ε r = 1)? (b) Find the capacitance if the tank is completely filled with a fluid with ε r = ε r 1 ? (c) Derive an algebraic expression for the capacitance versus fluid level x if the capacitor is immersed into a fluid up to height
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: x . (d) Calculate the value of the capacitor for W = 1 cm, H = 20 cm, g = 2 mm and r 1 = 80 when the tank is empty, completely full, and when it is lled up to x = 7 cm. 3. Capacitor C 1 is discharged at time t = 0 s (i.e. v 1 = 0). Calculate v 1 at t = 5 s for C 1 = 1 nF and I 1 = 50 A. 4. Problem 6.25 in Nilsson and Riedel, 8 th edition 1 5. Capacitor C 1 is discharged at time t = 0 s and then charged by the current source as indicated in the plot shown below. (a) Derive an expression for v 1 ( t ) for t = 0 . . . 7 ms. (b) Find v 1 ( t ) for t = 2, 5, 7 and 9 ms and C 1 = 1 mF. (c) Verify your result with circuit simulation (transient analysis). 1 2 3 4 5 6 7 8 9 10 1 2 3 4 Time [ms] Current I 1 [mA] 2...
View Full Document

This note was uploaded on 08/01/2008 for the course EE 42/100 taught by Professor Boser during the Spring '08 term at University of California, Berkeley.

Page1 / 2

ps6 - x . (d) Calculate the value of the capacitor for W =...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online