.. . Review: Exam 2.
9/15 po Fot a superconductor doelow criticar temperature the resistivity is? + Ø exactly 1. u
look like n
*att enough temperatures superconductor mim
m *resistivity drops to Øar critical temp. 2. R= 8 h (resistance of piece of wire) & what happens to resistance
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rollen tilga red sortlov if cross-section a length resistance.
double? S resistor
as w nothing changes * length double & 1/2 cross-section
4x4. * what happens to resistivity if clength or area changed? ore
I nothing ble resistivity is independent of
or er * Q 4 -7.
will be described. either in I SA SA
parallel or in series.
4.) series = same current & Split voltage. We also discuss several other topics like Neural net is a theory of what?
5 current through one of resistors?
h same blc series.
6) Power? which gets more power?
0 V-IR 4 P-IV - first get voltage of each resister R, = 5v
R. 2= 30 Po 2.5wine, Pa 1.5w in R. Po 4W in battery
@studySoup Don't forget about the age old question of What is the meaning of conclusion in science?
* Alternative :
will be described ... not
4) resistors get.... same voltage but split current blc parallel
3) find current? I a I I Req=22
Iě - § = 4A co) Power P= IV
Split I for 70 32w for battery ivdslegs 10 anivore
each R, & R2 04/3 w for Ro f ondi w for Re We also discuss several other topics like What is the eukaryotic chromosomes?
* Circuit wl 3 resistors w/ parallel & series Q8-15.
note od mo o r 8.) Total current ?
IE - 24 - 2A.
* voltage? REDRAW:
wa/2(4) = 8 w m iles
N 2 (82=160
how ni eva.s TOTAL: 2 122
A T 24V
6 = 4 กิจ
• REDRAW ni wa 2A feq=4 + 8
8ch If you want to learn more check out A fault of the mouth where the upper jaw extends over the lower jaw, what?
8.) Toral corrent ? 2A
current batter pumping out)
9 equivalen resistance of circuit? 12.6 10) voltage ? 8v 8v lev (asks of a specific aut voltage) 11.) asks specific current? I=&
12.) is the o ammeter or roltage? If you want to learn more check out What is the use of archaeological record?
I Lammeter sisalt and
13.) P =IV
2 w 14 w 32w
15.) & 14) 3 resistors & one burns out. If resistor in series blows out.. All goes out.
L if 62 resister blows out... no electrons can get through it ...
but current still flows through other resistors.
now new resistance is 2o2... it incree sed. (total resistance)
* what happens to corrent?
(resistance & current inversty
to connect what is its
an ameter of resistance?
12. Kirchhoff rule:
JAS) (w Q:18-21- Q-CV
loop role - egunalent to law of consenation of energy
point (junction) rule - eg. to pantes
law of consenation of charge
Energy - QU!
ten? t a te
#will be 3
for series Ceq = C,+ C2
Study s dop
omf cel mic (charge) o enteje)
w o) so vat v? Vi
อา. จ. อ2 จะ .
shwe same charge b/c in series. Whenawar
12 mF a ni 4+
Vee -ler to erad en = 8V
I redraw on mo od tout site for couptus
ale ml. = 4x24 Q = CV W ie man on (m) - 4 mph + h stories at enggant to (81*
potential drop ?
capacitor 165 compared to 8vov
21) total energy stored in whole system? & E= Q VONNON Q: 23-25 Right hand rule Questions
E = 2 (96mC) (24V) (will ask electron) o #going away from you. flip.bic electron.
24) Path of electron will be?
25.)& work done by magnenc field is?
by when something moving in circle... centripital force doesnt do work 5 30... Ø.
27)&26) (E) can speed up Charges.
executes and can change /
negnet megnerifields cannot speed up charges.
but... (B) can change direction of motion.
28) F =
19 v B sine
#bigger charge or field then Ft * no relocity ... no force. * if o=0° or 180° so ... 129 ↑ also get no force. *maxinan force if 6=90°
& proportional to B.
*if quadrople distance
Bis in testa units.
* will forces repel, attract , stay same?
- if same direction attract.
- if opposite direction repel * which gives bigger force? exerts more?
Ly forces are equal.
*net field @ location A?
Lout of page.
* net field @ location B? wire 2 stronger blc orient larger & closer