GAP2_Exam2

GAP2_Exam2 - Name tNj/ " P hysics Department Duquesne...

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

View Full Document Right Arrow Icon
Name tNj/ Physics Department Duquesne University PH212-01 GAP IT Exam #2 March 17, 2009 " Read everything carefully! . This test covers Chapters 25 - 27. There are 5 multiple-choice questions worth 5 points each, and 5 long-answer questions worth IS points each. There are 100 points. possible. Partial credit will be given, but only if you show your work and your reasoning is clear!!! e = 1.61 x 10- 19 C " 1. Four wires meet at ajunction. The fust carries 4A into the junction, the second cames SA out ofthe junction, and the third carries 2A out of the junction. The fourth carries: A) 7 A out of the junction B) 7 A into the junction C) 3A out of the junction ~--~~ D) 3A into the junction E) 1 A into the jUT\ction l +'fll. ~ S-AnA ~ " ~ 3A (.';j ",,:' , " , 2. A nichrome wire is 1 m long and I x 10-6 m 2 in crosS - sectjo~al area. When cormected to a potential difference of 2 V, a current of 4 A eXlsts In the wire. The resistivity ofthis , hrorne IS: ' n .... <? _ V _ ___ I me '- z-V '" " -" A = 7 - 'fA - _~ J ~ A) ]()-7 Q.m c:.;5xIO~ s= ~A=GS2J(~) B) 2x to-70.m E) 8x 10 7 Q.m L \~ C) 4x lO- 70.
Background image of page 1

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

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

Page1 / 6

GAP2_Exam2 - Name tNj/ &quot; P hysics Department Duquesne...

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