A device that produces electricity by transforming cco:r2ou5x* a) nsfy0 themical energy into electrical energy is calo:n 2xrcyfs5 a*)uo0tled a

  A car battery

  The total amount of chav--qbfi 6mo6 irge that passes through a wire's full cross section at any point per uni ivoqb-6 fi6m-t of time is referred to as

  The direction of convention current is taken to b3 b(mog)u ao2gxi) p+fe the direction that

  A coulomb per second is the same alzq ffj)e.n8 1s

  Car batteries are rated in "amp-hours." This is a mea c4a7;hpaa qonf.f +/rsure of their

  The resistance of a wire is defined c htkt.; v14;fjb15mcuu f zc;:ly(fkas

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

  The resistance of a wisnzdl8+729 0e 3hc ylbnzx hdc8p(mk ,re is

  The resistivity of a wir:t jin3ot-sf4,e;d o9nh ky8se depends on

  Which conducting material has the lowest resistivitycitz1wfg4d0 kfu p7 7, value?

  Consider two copper wires. One has twice the length of the zi:j(; *ub6fol0x iby other. How do the resistivities of these two wires compare?y( ujz xi 0obfl:b6;i*

  Consider two copper wires. One has twice the length of the exv( ze7:f4sko-. qg xwxfnuvt- 4s 63other. How do the resistances of these two wires compare?ufos4 xkt-sq7eg z4w.ve:vn -xx6 3f(

  Consider two copper wires. One has twice the cross-sectio1mz zdc:17je5b; rv bknal area of the other. How do the resism5j:z1kczb7e 1;b d rvtances of these two wires compare?

  Consider two copper wires. One has twice the lengtlp8h5 gff 5 e,zs,fes-h and twice the cross-sectional area of the other. H f5,z8efs5egfl,hp s-ow do the resistances of these two wires compare?

  The length of a wire is doubled and the radius is doubled. By what factor d(s *oy:j;n9xdq hkgc;oes the resistakdo g*n ;qy9jhc:x(; snce change?

  How much more resistance does a 1.0 cm diameter rod have compp( zh,o;cf ,toq-rj/nared to a 2.0 cm diameter rod of the same l,r;/n opj(fh o-ztq,cength and made of the same material?

  The resistivity of mohur m/6y l(.crst common metals

  Negative temperature coefficients of resistivitowcwk)h:ba51u m+ +p qy

  What is 1 W equivalent to? ; 1njip;nrclgr0;5qz

  A kilowatt-hour is equivalent to.ydv j5.bb:eq

  If the resistance in a constanwrhnq/bac*2d6l q)dj p9sy(j/vc1 1 dt voltage circuit is doubled, the power dissipated by that circuit q*nlc/dvaq1 jb/y 1(wsdr6dhcj) 2p9will

  If the voltage across a circuit of constant resistance is doubled, y9i wqc s*isf/7 k;mf*the power dissi7iq9cf*iwskysm/f * ; pated by that circuit will

  If the resistance in a circuit with constant c4 v rm 6t ul3q)pjal1sgq:;,rvurrent flowing is doubled, the power disql1tg4q s:apr) u6;vmr lv, 3jsipated by that circuit will

  If the current flowing through yq(is47hhbd/ a circuit of constant resistance is doubled, the power dissipated by that circuit will bis7yh(4hqd /

  During a power demand, the voltage output is reduced by 5.0%. By whyu vz(,fuj uu ece:e 7:p/22pyat percentage is tjeef72 ,u yu2pzy ::cu/v(uephe power on a resistor affected?

  A current that is sinusoidal with respect tomi/ z6oj9sw2n time is referred to as

  Consider two copper wires each carrying a cuwsktjleu0 3o(qx okzwk 9*8 /2rrent of 3.0 A. One wire has twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to9w0qj* w8t x(k/o2 k sekuzo3l that in the larger diameter wire is

  Materials in which the resist.0y/i e bksxp/ivity becomes essentially zero at very low temperatukse/ ix.0y bp/res are referred to as

  What current is flow6 tsuxsh1shx;p c i32ra;p 6h4ing if 0.67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating apparatus in 2.0 min. What i* tqfg9rac 1.xd9;5meha gzti c1 +s3ps the average curren1i9sgfxz;magc1cd3 *a+r 9 hett p.q5t?

  How much charge must jpw 8,12qsrwcf oxg9 8pass 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 flowing if md5 lah5ex,b njq)s)7 $4.0 \times 10^{16} \; electrons$ 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 onu3yva4a;c7ac7-wc4gul r .hh for 10 min. What is the net number ofwrcu4g74 c3ylaa ;huc .-v7 ha electrons that have passed through the coffee maker?

  In an electroplating proksl ls( hxk(7/cess, it is desired to deposit 40 mg of silver on a metal part by using a current of 2.0 A. How long must the currens7kkxl( hls(/t be allowed to run to deposit this much silver? (The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference -pf f6dy( of.y* f rz/+docb,gis required to cause 4.00 A to flow through a resistance of 330 W?fdf * gfob/do-r(f y 6yz.,pc+

  What is the voltage across a 3qxm fm)dar+nl-ofq,y8 jsj0zv340 v5.0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What current b4n xic -2ja6gwill flow?

  A light bulb operating at 110 V draws 1.40 A of current. Wwd3k7(g lgsbra;z0e8a w.o)u hat is its resistance?;og (w7s e rlbawaugz 38)0.kd

  A 12-V battery is connected to a 100-W resistor. How many e/ wcp*qy7r;7sxk0iu b lectrons flow through;0 /r 7qp*c7ikuwyxb s the wire in
1.0 min?

  What is the resistance of 1.39xwz zj3ich 50 m copper wire of diameter 0.40 inch? (The resistivity ofwjx53c z3hz i9 copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circularybrdqe 3n(1 :s0kyo8 g rod 1.0 cm in diameter and 45 m long, if the ressdkgy0rybq 3e: o(8n1 istivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wi94k it fy:duw/b3 :prbre (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 wire (resistivgb) y +8rn2c-jg8;kt 7hhbdbjity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 457k0clutwmgp m r61 j ep,o44f.0 m long, measures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius is 0.321 lr)ikqew , ge *7uopvb./0(vomm) nichrome wire if it is connected to a 12.0-V battery. ,iwpkeog0v/q. oe)l u(7b*vr (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rec)762 7 6 spxmnttaoroxtangular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when i7r7)o6 omsx npax6t2tt carries 4000 A? (The resistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire has axiu.u r 55rakvy1 qh.4ps+ tk8g(it9r 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 (resistbxl *l8+0d,8 hjrlyuoivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resis,sgxbz t.th2etir;/ -tance 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 o8-p4mx3l pbt;ipw6a ef resistivity 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 deter1v1ob b4wk*on mine the melting point of indium. The resistance of thv4*11n kbwb ooe 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 throm 9pk9ucmzopv g l; zn.y9/l:6ugh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. Whax0 lpz6y; pheqxnm, t4 r1nx31t current will it draw?

  A 150-W light bulb running on 110 9:b4gkwu8trv1v xz*am4qx+brif-m, V draws how much current?

  What is the nominal resistance of a 100-W light bulb designed to be u x1u1n1rrppnc 5l4t68ky9 l hnsed in a 120-V circuit yt 1k8rprn1n 546npxc1luhl9?

  A toaster is rated 800 W at 120 V. Whatqd;jx 54yrjs6 v5qn (s-xl mx6 is the resistance of its heating elemen 6xjsjq5 vx(yl-d4rqm 6 ;5snxt?

  A 200-W resistor is rate kjs.wvvs2szsa -e 4y2.m2 z7t:x: kcpd at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated -bbd n2as; s4noq /i4bat $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, hv2wcw7 /xl qimzn909what current does it draw?

  A lamp uses a 150-W bulb. If it pq:y cm651 7o e5 pgxps:auk,smv2tp)is used at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What is its resistanyx/ejgfpru 05. cvlg 10f; cn6ce?

  How much does it cost to operateyb /j8e9a+w1kz.e hs p)hn i-d a 25-W soldering iron for 8.0 hours, if energy 1w.i edhs a j8p)eyb/h-9kz+n costs $0.08/kWh?

  How much energy does a 100-W light rajjgo3:2gl c s0r/d7bulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How much heat 4msosg/46o gqh9 hyg: energy is o 4 ohsmh4g/s: 6gg9yqproduced?

  A battery is rated at 12 V and 160 A-h. How much energy does the bajx r2qr aym/;5cj n;vp)x8u8ettery store?uxa)v/ jyn ejq5rp82 8cx;m;r

  How much energy does a 25-W soldering iron use in 8.0mv-3.h/cgp e t hours?

  A 100-W driveway lightxvgprx f- 7j5o wp:/n7 bulb is on 10 hours per day. Assuming the power company charges 10 cents for each kilowattxr5 fj7 vwpx/o:p7 -gn-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) g8(pg 4 68 c ,nnb*hz e*ald)7sx;6htjts wodiis turned on 8.0 hours per day. If electricity costs 10 cents per kWh, how much does 8w;h*ejdc ndpgg*l s8sti4),ax6(bt6o7hnz it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of rqok f(jjjjr2i w8y 1)+unning a central air-conditioning8jyr 2 j+k(1)j fiqowj 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 cents per kWh?

  The heating element in an electric drier operates on 240 V and generat4 7rsz5g2t swces 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%.2zsct r5s7 wg4 (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 flows6 . 7ojppfovmjzc .4x2 through $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costx;h92b-+5t iigpelk qs $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 zty l,t. dzr( rp,1 p2ikajd bk0fp)52rate of 2.0 hp has 60% efficiency. How much current does it draw from a 120-,5( bid)lk.ajtztzy2p f rpk d,p021r V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rms cuvxc7qejv95 lt-*bex ,rrent flows through this device?7vtql b je-vx, 9*5cxe

  A 500-W device is connected to a 120-V ac e) gs--x4qkbkpower source. What peak current flows through -q4 kekg bx)-sthis device?

  A 500-W device is conn(rk3t;u vfq/h;e kra98jrt 5p ected to a 120-V ac power source. What is the peak voltage acrossakfr (/ e83qt ujr9hp;5;rt vk this device?

  The diameter of a copper wire is 0.081 inch. Th )8pk6(oaz: l: a7fgxzan xb/5azf ap-e maximum safe current it can carry (in order to prevent fire danger in building construction) is 20g 6)fx pfa:a kzza7-xnapz(:o8l 5ab / A. At this current, what is the drift velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)