Exam 2--Winter 2000 - o" 240 Physics Exam Second March...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
I o" Physics 240 Second Exam March 91 2000 Your printed name Your Signature Instructions: The exam is 75 minutes long. There arc 20 questions, check that you have all pages. You may use one 3" by 5" card of notes and a calculator. No other notes or books are allowed. Notebook PC's, PDA's, or calculators with extensive text displays are not allowed. Make sure you correctly copy your choices to the answer sheet. Make sure you put the exam version (3) and your section on the answer sheet. Section Time 004 11 005 12 006 1 014 2 015 3 016 4 018 8 022 9 023 10 024 025 1 026 t2 Instructor Merlin Bretz Bretz Brctz Yokoyama Roe Coulomb's law constant Charge on electron Mass of electron Mass of proton Perririttivity of free space Permeability of free space Speed of light in vacuum Room 224 Dennison 224Dennison 222WestHall 222WestHaIl 216 Dennison 414 Dennison 22l Dennison 221 Dennison k = 8.988 * 10n N-m'/C' e = -I.6 * 10-t' C me 9.11 x 10-31 kg mp= 1.67 10-21 so 8.85 16-t2 C2A.{-m2 IIo= 4n 10-7 T-m/A c 3.00 108 m/s Prefixes:Mmega=106,kkilo=103,mmilli=10-3,pmicro=10-6,nnano=10-e,ppico=lg-12 Useful constants:
Background image of page 1

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

View Full DocumentRight Arrow Icon
hv Physics 240Exam2 1. A battery is used to charge a series combination of two identical capacitors. ff the potential difference across the battery terminals is V and total charge Q flows through the battery during the charging process then: A) the charge on each capacitor is and the potential difference across each capacitor is 2V B) the charge on each capacitor is V C) the charge on each capacitor is V/2 D) the charge on each capacitor Q/2 E) the charge on each capacitor 2. Suppose one has available: two sheets of copper a sheet of mica (thickness = 0.1 mm, r 6) a sheet of glass (thickness = 2 fi:rrr^, r 7) a slab of paraffin (thickness 1 cm, r= 2) To obtain the largest capacitance, place between the two copper sheets: A) a 1 mm gap of air B) the mica C) the glass D) the paraffin E) the mica, glass, and paraffin 3. A cylindrical copper rod has resistance R. The rod is reformed to twice its original length with no change of volume. The new rod's resistance is: A)R B) 2R c) 4R D) 8R E) R/2 March 8, 2000 Page I
Background image of page 2
Physics 240Exam2 4. For an ohmic substance the resistivity is the proportionality constant for:
Background image of page 3

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

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 9

Exam 2--Winter 2000 - o" 240 Physics Exam Second March...

This preview shows document pages 1 - 4. Sign up to view the full document.

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