67 v v3 q3 c3 533 v phy2049 chapter 25 a b 6f 4f 3f

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: After switch is thrown to B: V1 = V23 (parallel branches) q2 and q3 in series: q2 = q3 = q23 (C23 = 2μF) Charge conservation: q10 = q1 + q23 48 = C1V1 + C23V1 (V1 = V23) Find V1: V1 = 48 / (C1 + C23) = 8 V Find q1: q1 = C1V1 = 32μC 12V q23 = q2 = q3 = 48 – 32 = 16μC V2 = q2 / C2 = 2.67 V V3 = q3 / C3 = 5.33 V PHY2049: Chapter 25 A B 6μF 4μF 3μF 24 Another Example Each capacitor has capacitance 10μF. Find the total capacitance Do it in stages 2&3 Add 4 Add 5 Add 1 ⇒ ⇒ ⇒ ⇒ 5 μF 15 μF 6 μF 16 μF 2 1 4 3 5 PHY2049: Chapter 25 25 Find Charges on All Capacitors Each capacitor has capacitance 10μF. V = 10 volts q1 = 10 x 10 = 100μC C2345 = 6μF q2345 = q234 = q5 (series) q2345 = q234 = q5 = 10 x 6 = 60μC V5 = q5 / C5 = 6 Find q4, V4 V234 = V4 = 10 – 6 = 4 q4 = C4 x 4 = 40μC 2 1 4 3 5 Find q2, q3, V2, V3 (C23 = 5μF) q2 = q3 = q23 = C23 x 4 = 5 x 4 = 20μC V2 = 20 / C2 = 2 V3 = 20 / C3 = 2 PHY2049: Chapter 25 26...
View Full Document

This note was uploaded on 07/31/2011 for the course PHY 2049 taught by Professor Any during the Summer '08 term at University of Florida.

Ask a homework question - tutors are online