A device that produces electricip0 fl)qv3kdd6- qkxk(n vs*d,ty by transforming chemical energy into electrical eq 0 k flv63dspx(,-*nqddvkk) nergy is called a

  A car battery

  The total amount of charge that passes through a w lh x as9f,fgtt0h*/ cnp8c+0rire's full cross section at any point per unit of time is referrp0ght,8/nlt a r xc*csh 9f0+fed to as

  The direction of convw-zoa:okuo, 965ipa5n k*wr xtso/y f9w b47gention current is taken to be the direction that

  A coulomb per second is the 7ndpkg8m+h(: s 0mfway1u7xosame as

  Car batteries are rated in "amp-hours69imhajl(7 ce." This is a measure of their

  The resistance of a wire c c - d)olwi8. al..l5ami/m9gz,wd/s1 cchzzis defined as

  What is $1 \; \Omega$ equivalent to?

  The resistance of a wire ilk p5io d*k0 l (1/pk7myoh;qvs

  The resistivity of a wire depen;ru.scfpo 32i v:2)c1ktlukj ds on

  Which conducting material has the lowest resistivity valuey e( gj ys5e:sh61eav4?

  Consider two copper wires. One hah3ox09w 6 esrk2j.xpx s twice the length of the other. How do the resistivities of these two wires compa6xr9 pxj.3eok0 hs2 wxre?

  Consider two copper wires. One has twice the lengtu/ilver2u ),aaj9q n 0h of the other. How do the resistances of t i 9uul0av q/2rne)j,ahese two wires compare?

  Consider two copper wires. One has twice the e7cf u 2c8i/xoet- hz5cross-sectional area of the other. How do the resistances of these two wire5xc 2o/u8z-ch7feet i s compare?

  Consider two copper wires. One has twp, 7;y;* j5fg1 x:e4fbwj vmfxfwk wm)ice the length and twice the cross-sectional area of the other. How do thejx1;k,g f y;pf 5jvffmebm7www* :4)x resistances of these two wires compare?

  The length of a wire is doubled and the radius is doubled. By what fa37,fx4rm0 ; f ogitbdzctor does the resistance change?3mrgt;do zf4bi x0, f7

  How much more resistance does a 1.0 cm dia*z tv 7w4hj30 1phjs ip2jx6vymeter rod have compared to a 2.0 cm diameter rod of the same length a2 jvs763h4 yjwijp0 p1 *zxvhtnd made of the same material?

  The resistivity of most coo tg2msn kpizn,r.,98 mmon metals

  Negative temperature coefficients of rzn 7 .p)mh6riiesistivity

  What is 1 W equivalex-l r 7jba+8ulnt to?

  A kilowatt-hour is equiva-8vkqkugj )se- n 0 3d2.wideg52xryblent to

  If the resistance in a constant voltage circui o9 i; d8w7racty y ;1tpx ufxz,)4fjyu-o+hs:t is doubled, the power dissipated by that 9+d ryfpxcz x1osiuy)u; th,atfy7wo ;-:j 48circuit will

  If the voltage across a circuit of constant resistance is doubled, the power dan5dx ai+f9bdhu,q : v +w3v5zissipated b5 +zuqfv3 5n9+bhdxd wia,v: ay that circuit will

  If the resistance in a circuit with constant currp,*lwz+dmccccii-0ajb (w:+ kiy c 27ent flowing is doubled, the power dissipated by thapmc70i+wcly(j c2-di,k:bawc* czi+ t circuit will

  If the current flowing through a cntf)e:wve. isox5*q ceufs,le q ; ;82ircuit of constant resistance is doubled, the power dissipated by that circui e:2e i woqlcvxeu ;f.q;e,n*ss)8t5ft will

  During a power demand, thexe)d4jae*cn4un;h j- *v-zks u0ha/o voltage output is reduced by 5.0%. By what percentage is the power cu/n zxs 0n-aj-j hhokda4e*v;4ue )* on a resistor affected?

  A current that is sinusoidal pav j/ogv(vt.m4hlaa,/ 4qo- with respect to time is referred to as

  Consider two copper wires each carrying a curren ;v5pmrtrku * m e:6qk49vtj1jt of 3.0 A. One wire has twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire jmpvj;1*:r9ut k qk5me t64vrto that in the larger diameter wire is

  Materials in which the hiz86d / x3 -lpmer3naresistivity becomes essentially zero at very low temperatures are referred to 3/x-e hi 6npzrml38ad as

  What current is flowing if 0.67 C of charge pass a p uw-h +pj4hf6 ld.rsh3m.h6s voint in 0.30 s?

  A charge of 12 C passes thro6vhs ofc cxtv+o t-71,ugh an electroplating apparatus in 2.0 min. What is the average currh 6cxofo v7v +1sttc,-ent?

  How much charge must payk/o eq,da2 9-aa), goet p 1oriue(-tss by a point in 10 s for the current to be 0.50 A?

  A total of $2.0 \times 10^{13} \; protons$ pass a given point in 15 s. What is the current?

  What current is flowie r-2k zz0vtt0ng if $4.0 \times 10^{16} \; electrons$ pass a point in 0.50 s?

  If $3.0 \times 10^{15} \; electrons$ flow through a section of a wire of diameter 2.0 mm in 4.0 s, what is the current in the wire?

  A coffee maker, which draws 13.5 A of current, has been left on for 10 min. Whxw9.-mssoet , at is the net number of electrons that have passed thro wtme9.sso -,xugh the coffee maker?

  In an electroplating process, it is desired to deposit olmlk )0ki 7;)s) xjej .b:ssy40 mg of silver on a metal part by using a current of 2.0 A. How long must the current be allowed to run to deposit this much silver? (The silver ions are singly charged, and )s)k ;sk)e07m bjol xji.lsy:the atomic weight of silver is 108.)

  What potential difference is required to cause 4.00 A to flow through a resistanr.q3m :a xq;ssgbe5o .ceos53max;. qbs.:reqg of 330 W?

  What is the voltage across a 5.0-W resistor qhk( 0nkjtqn 5+ i:jb3if the current through it is 5.0 A?

  A 4000-W resistor is connecte+(cahb4e3on;bxo/y f9 dm z9k( l/ebvd across 220 V. What current will flow?

  A light bulb operating at 110 V draws 1.40 A of current. Whapwv/* 7yu8y7d;r 41fuw5dnadd 3 adhht is its resistance?v w34 uwa1nay7d57;8 ddpu yfhr/*h dd

  A 12-V battery is connected to a 100-qp4)1sfs b;7ci 1pt2jm -q rvgW resistor. How many electrons flow through the pj tc41 -s1srqgfb2v)7 mpiq ;wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diam5w8+iojl7 gftg9kw p)eter 0.40 inch? (The resistivityjo+k 97f)ip8w glg5wt of copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular sev t,jt8fxi:c mpi.;nvj0q:k; (6 yyrod 1.0 cm in diameter and 45 m long, if the vsmyif e8t6j;:yjk.cqx;0 n:ptiv ( , resistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire bqbc/7+6w kid(resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wii( vw14v vxq*i53 pydare (resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, measures 0.040 ohms. What is its 5d +q:a* 8kbx27oquao7bznmy resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius is 0.3)4g9ln7zy u vy21 mm) nichrome wire if it is connected to a 12.0-V bagu9 )nl y4y7vzttery. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cross-sectioe,(f*+ p)km1 a2w dey sgqs2scn, 1.0 cm x 2.0 cm. What is the voltage drop alonwsceg1 )s mp,f2k*s y2aq( +edg its length when it carries 4000 A? (The resistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire h;g8cixr8 q+s pfk)wq ;13yavzn g go09as a radius of 0.50 mm and a resistivity of $100 \times 10^{-8} \; \Omega \cdot m$. If the wire carries a current of 0.50 A, what is the voltage across the wire?

  A 1.0-mm diameter copper wire (resistivity n tf5: )(fp h1ulxb;az qj7*ds$1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resist re+qwxn(5e4l ance of $18 \Omega$ at a temperature of $20 ^{\circ}C$. What is its resistance at a temperature of $120 ^{\circ}C$? (The temperature coefficient of resistivity for carbon is $-5.0 \times 10^{-4} /^{\circ}C$.)

  The temperature coefficient of resistivity of plal8ja8sm djd;5; eg/twtinum is $3.9 \times 10^{-3} /^{\circ}C$. If a platinum wire has a resistance of R at room temperature ($23 ^{\circ}C$), to what temperature must it be heated in order to double its resistance to 2R?

  A platinum wire is used to determine the melting point of innsglwpbfm 7e iq o5f +*2(14gidium. The resistance of the platinum w wmqg2fbe*g flp(ois51i+7 4 nire is $2.000 \; \Omega$ at $20 ^{\circ}C$ and increases to $3.072 \; \Omega$ as indium starts to melt. What is the melting point of indium? (The temperature coefficient of resistivity for platinum is $3.9 \times 10^{-3} /^{\circ}C$.)

  5.00 A is flowing throug o)xnyh/m; wt3 pnz+q:h an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What cur,2a 75k*a bg3ajlm uparent will it draw?

  A 150-W light bulb r0jjoy ( pq6tb 0k;o+maunning on 110 V draws how much current?

  What is the nominal resistance of a 100-9wi5mlzg 1so.gdlj 1/k :7mt+z w swf(W light bulb designed to be used in a 120-V cisg.zd+wlmmt( 9w f/ jg1l5iz:w7 ko 1srcuit?

  A toaster is rated 800 W at 120 V. What is the resistance of its heating 8h5f fz6ijv8,xtxe :zqa p .*belemenp86t, q xjhe:zi abfx5*z8 vf.t?

  A 200-W resistor is ratedom4hhw8 +nf b9(wdkh7on6k 9t at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is plg5bayx5 ;d)rated at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what current does itl9 q-*lcpe(+it .nj3cmr1qk u draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, what is its resistance hnx6om- srrqs, d.v8:?

  A 25-W soldering iron runs on 110 V. h+dq-c/ fc jds-hug(2 What is its resistance?

  How much does it cost to operate a 25-W svh:ivlqlag( gq ff7)2g 9q;u3 oldering iron for 8.0 hours, if energy costs;gg):2 vg qa3fl9qlvqf7 hi( u $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 hours?u b 9a-5vmbdf 8o1o)nq

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How much h,wph0/x : *b4ib yfe hgol:x,:d1ycl leat energy is producb:led:4xxl/yg :,bhi ph1 c0flowy*,ed?

  A battery is rated at 124 q*k3bf)a;8q vs*q2anm lha08 vimdg V and 160 A-h. How much energy does the battery store?nv2)qq kivba qsa4a3dml0fm8g 8** ;h

  How much energy does a 25-W soldering iron use in 8.0 hours?nx esn6n.onu ns2ee3t)3*g q7bi*ovb3c :bi(

  A 100-W driveway light bulb is on 10 hours per day. Assuming the power company cv2l+ 5h wtxf9jharges 10 cents for each kilowatt-hour of electxfl5j9hw tv2+ricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours per day. p22;+fdps bpzIf electricity costs 10 cents per kWh, how much does it cost topdpsb+22 fpz; run the computer annually?

  The monthly (30 days) electric bill included the cost wivbblms 58-8of running a central air-conditioning unit for 2.0 hr/day at 5000 W, and a series connection of ten 60 W light bulbs for 5.0 hr/day. How much did these items contribute to the cost of the monthly electric bill if electricity costs 8.0 centvsi8m 8b5l- bws per kWh?

  The heating element in an olvdh 90)5pag nj)6 9a0bxss gx8bq(p.v0u zoelectric drier operates on 240 V and generates heat at the rate of 2.1 kW. The heating element shorts out and, in repairing it, the owner shortens the Nichrome wire by 10%. (Assume the temperature is unchanged. In reality, the resistivity of the wireab9d8 xs9 p plj (0ox) vvzshu0)5ao6gqn.g0b will depend on its temperature.) What effect will the repair have on the power dissipated in the heating element?

  14 A of current flowe.d gw a*s4*gfs through $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs doc4p60jc1x3 umwt+w p8 c47b ytka3z$1.49, and will run a portable CD player for 6.0 hours. Suppose the battery supplies a current of 25 mA to the player. What is the cost of energy in dollars per kWh?

  A motor that can do work at the rate of 2.0 hp has 60% efficienc9fw:cjrdpub7/)r 6r5q :ndm 5 oa wdd4tj.g 7ry. How much current does it draw from a 1qw.t dar/:c r)9pj 7nr5:drd jdu 5bwg6 4fom720-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. Whay7 v qyoz4 3npr-1 y(0d2mzqcei o8g(vt rms current flows through thismo 3 z4veyp0q 7(- dyi(q1go2z8y nrvc device?

  A 500-W device is connected to a 120-V ac power source. What peak current flowpjg 2e5 6b3a inh5 kuu(a0ck3i0qqj-gs through t35ia pg6k0j52q neukc-a jh3(gu qb 0ihis device?

  A 500-W device is connected to a 120-V ac power soatvy 2imjk6(hshc .a )udy :*-urce. What is the peak voltage across this dev-ja:)as 6v uimyd*khc2(hyt. ice?

  The diameter of a copper wire is 0.081 inch. The maximum safe current fp8r:c+ev1 v fit can carry (in order to prevent fire danger in building construction) is 20 A. At this current, what is the drift velocity of the electrons? (The number ocpvfv :+f1re 8f electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)