A device that produces electricit e:2-yybhm2fq y by transforming chemical energy into electrical -:bf2emq2 yhyenergy is called a

  A car battery

  The total amount of *1i7kgsyg c3vz* xz1y12jh swcharge that passes through a wire's full cross section at any point per unit of time i gzc 1gxs *v*12 jhzks173wyyis referred to as

  The direction of convention current is taken to be thei0um :qf)9.x0l2wd f0jce2bqfz u t 8x direction that

  A coulomb per second is the sam5v/d5x1sk m m:2 9j3 x8n7cx kxld jcbf3p4rfoe as

  Car batteries are rated in "amp-h1c5cb .osh3j zours." This is a measure of their

  The resistance of a wirej *+ 2qmo ,svst8,hkc4yq wwex.1pq8o is defined as

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

  The resistance of a wirs1 2asm /3fo1s7lq twbo4pwy4e is

  The resistivity of a wire depends oeecn3az 9g 4.h2jg z5mn

  Which conducting mate2n ) b*.cj mkj3hut:*bxhav g2rial has the lowest resistivity value?

  Consider two copper wires. c bu/ *d1h ,uuhuv9xa( aetp/. One has twice the length of the other. How do the resistivities of these two wires cot9(bua.pu/x h1 /a,vdehuc*umpare?

  Consider two copper wires. One has twice the lengt y;p+ccb.f0h wh of the other. How do the resistances of these t. c;yh pwf0c+bwo wires compare?

  Consider two copper wires. One has twice the cross-sectional aru,d3ihgt:zg 8crd v-*ea of the other. How do the resistances of these two wirzdh gdv c* :t-8,uir3ges compare?

  Consider two copper wires. One has twice the lengt1e bnmx/): dcwh and twice the cross-sectional area of the other. How do the r:b1)/xd w ncmeesistances of these two wires compare?

  The length of a wire hyd32o,q o/ti is doubled and the radius is doubled. By what factor does the resiih do,t/q23y ostance change?

  How much more resistance does a 1.0 cm diameter rod have compared to ava2d91dpc9rnx.(g/j3ab( yby hzns. 2.0 cm diameter rod of the same length a/yaz (jr .avpghx 1dn9.b sn db(92yc3nd made of the same material?

  The resistivity of most common 8f3tsi6 adsjh yl v:35metals

  Negative temperature co 0 tzwuk;noxul.y /a 6gty7x2o17ual3efficients of resistivity

  What is 1 W equivalent3sqklbw s 7m3,uxn q2vm-sy2y0; w :pi to?

  A kilowatt-hour is equivale+h ovxvf 5 vvlx34jx7+nt to

  If the resistance in a constant voltage circuitc r;ed :vh2-a lq/u2vn is doubled, the power dissipated by thec;2/ :l2rvaqvh dun-at circuit will

  If the voltage across a circuit of constant resistance is doubled, theb7dlk0- vaj.w power dissipated w-7k jb.avdl0by that circuit will

  If the resistance in a circuit with constant currenl4ezcj4+7gozx kbcx +t/)u( vt flowing is doubled, the power dissipated by that circxb )x k+(gz 4lcj4euv/c7 t+ozuit will

  If the current flowing through a circuit of constant resistance is doubled, ojsy*4v2wocup w-8x ,the power dissipates*j w2,-wvycp4o 8 oxud by that circuit will

  During a power demand, the voltage output is redfe 3m,8v7rdou-7ohaa uced by 5.0%. By what percentage is 3v-ae8,m ofrh7a u7d othe power on a resistor affected?

  A current that is sinusoidal with respect to time is referred to w/.lrm sbo.p4 as

  Consider two copper wires each carrying a current of 3v*snw 6o+ jrk d*yv.b8.0 A. One wire has twice the diameter of the o6n rby j*w.v +dks*vo8ther. The ratio of the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially zero at very low3s 3hlu +tash9 temperatures are referresh+39als tu 3hd to as

  What current is flowing if 0.67 C of chax,rbq3hqfafh+2,h 1 yrge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating apparatus in 2.0 3 7i tbfnd*n:h*bawz( eno3j2min. What is the average current ejn*zbt(b23h:7ion fw3*dna ?

  How much charge must pass by a point in 10 s for the current to be 0.50 A,b t- *uwr+hth?

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

  What current is flowing if y-yrea1o (acrm:no/ f07q d5,nj1kgw $4.0 \times 10^{16} \; electrons$ 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 cdf:j+(*x fit juw 8u)furrent, has been left on for 10 min. What is the net numbe*) j :+xudffj (iftuw8r of electrons that have passed through the coffee maker?

  In an electroplating process, it is desired to deposit 40 mg of silver 6x9,twlsxa/ mon a metal part by using a current of 2.0 A. How long must the current be allowed to run to deposit thxm9w/a6sltx, is much silver? (The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference is required to cause 4.00 A to flow through a rdqjnso;. 11 h+k/dki(q , qmnzesistance of 3nm.si 1 h1zj dq,q qk/od(k;n+30 W?

  What is the voltage across a 5.0-W resistor id 2cm) .k5nwyhf the current through it is 5.0 A?

  A 4000-W resistor is connectedy nw8:l(fz s7i3ac fb5-bc a)r across 220 V. What current will flow?

  A light bulb operating at 110 V draws 1.40 A of current. What is i(emmv qxf 4j5(ts resistance xqj4f(m(5mev ?

  A 12-V battery is connected to3s uy/r v-ne:c a 100-W resistor. How many electrons flow througyr3u cve-/:sn h the wire in
1.0 min?

  What is the resistance of k17sism(pbd1snfvjx -56i,c1.0 m copper wire of diameter 0.40 inch? (The resistivity of copper s - s,76v cp1kbi d(ji5xnm1fsis $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diameter and 4:cxye ri;y1q( 1:xwnl 5 m long, if the resistivit:c :i 1wq1y;xxln(r yey is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wirel20s n h6)jo4la3sdgd-jxa; t (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 wirem)0*m1 c 8 +h jf:anevad3ueqz (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. Whatlsi-h:sv wi37 pm--dg sg 8u1*sswl2 v is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius is 0.321 mm)-mrp/r co: i.65yasqe nichrome wire if it is connected to a 12.0-V battery. (The resistivity of nich ires /o ca5r.6:-yqpmrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cross-section, 1.0 cmp hd-an:(l2s s x 2.0 cm. What is the p(s sl:an2h d-voltage drop along 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 nic ; r mcbj) sweank*v5(-h:;gmchrome wire has 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 (z, kiookbo*61/0fin kdn5 z+ aresistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resistance 4 e+st /ny.4(kynv ggrof $18 \Omega$ 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 rex *5/lktpd9u ksistivity of platinum 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 indium. Theqsn+e)mlb2f2y./6x) p bbmm j resistance of t /pe))bmln62b+fbqjmy mxs.2 he platinum wire 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 throumm:;h aa8u/45qe4xryea8/b s p u/zrhgh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current will it drawq2epx3 (1qcc /buq,wc jsp2 4t 6lven/?

  A 150-W light bulb running on 110 V draws how much cm+wbdi -a*(,1t x4a nz uesj3/4joxjo urrent?

  What is the nominal resistance of a 100-W light bulb designedbgq1u.b 85s ) d)mpx8vp0 cldy to be used in a 1208 bpds vx 8)g1l.q0d) mp5bycu-V circuit?

  A toaster is rated 800 W at 120 V. What is the resistance of itsac891ftu(ba-igqy )i heating elemen 9i ibt8f)aga1q-cy(ut?

  A 200-W resistor is rated hpu j q djpsi4 cn+-t8/(o*s9lat $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated att*44 (x d vxcqs e7jm/kobnh3w:t3v v9 $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 k*g6*wcnmfm (m20zby V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, whasp ,s.jy-fi5 pfj r;h7t is its resistance?

  A 25-W soldering iron runs on 110 V. Wsa o1,rkpu(tkk:iwwpr9) z; ;do o6g8hat is its resistance?

  How much does it cost to operate a 25-W soldering iron for clszh/g,4ha , 8.0 hours, if energy co,hgl/ ,4hzcsasts $0.08/kWh?

  How much energy does a 100-W light bulb useu:gmi j+.csc yb +(4 9eq0vkce in 8.0 hours?

  A 1500-W heater is connected to aj4lt1 / bukd7m 120-V line for 2.0 hours. How much heat energy is produk /4dtuj71lm bced?

  A battery is rated at 12 V and 160 A-if/.nr;cs: ottu mf/9h. How much energy does the battery store?ff.to /:ict; u/mr n9s

  How much energy does a 25-W soldering iron use in 8.3 fj )oriwn1fc9gxg wha7-: 5g0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Asqhjs0mo5- d6 cecxa453 -.mztat)yya suming the power company charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost to 5y aaesoxh50ya)q6- . zd3tjtmc4m c-operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hour1g 4jbbfc1,w wlhg9j5s per day. If electricity costs 10 cents per kWh, how much does it cost to run the computer awjj9wf 1h5bl4b ,g 1cgnnually?

  The monthly (30 days) electric bill incl,a f2t rl0o;t 7s7iffguded the cost of 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 m7,lftasf f; o0ri7t g2uch did these items contribute to the cost of the monthly electric bill if electricity costs 8.0 cents per kWh?

  The heating element in an electric drier operates on 240 V and generatlg;1auymxj n:s51dc0k9d (r aes heat at the rate of 2.1 kW. The heating element k: y1gjc9xasu(d0n 1md5arl;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 wire will depend on its temperature.) What effect will the repair have on the power dissipated in the heating element?

  14 A of current flows thero,f-jez i/sur,; p)2r ;o ldrough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costft;h oq 5qaw 2qy udp;c* .o,n)c)(fems $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 6r29a;zfzt: qo 0% efficiency. How much current does it dra:fa;t z 9rozq2w from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power souya-03icjnctf8- m m0hdpw q5; 7 kdt+trce. What rms current flows through this devicw 5a y-3dt0+t0mh;n qdf-mc cti7kjp8e?

  A 500-W device is connected to a 120-V ac 6vkt , pvuzz)j/h5hj0rr5 b (bpower source. What peak current flows through tvkvp j/6uh b5r(z hr0tjb,5z)his device?

  A 500-W device is connected to a 120-V ac power source. What is 02.l c80q qtrso .putsthe peak voltage across this devicq08l02str t.uo .c sqpe?

  The diameter of a copper wire is 0.081 inch. The maximum safe currenp8 -,zg tnu.gpt it can carry (in order to prevent fire danger in building construction) is 20 A. At this current, what is the drift vegngpzp.tu- 8, locity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)