A device that produces electricity by -cngt748hpxg transforming chemical energy into electrical energy is4tgx8 g7hpc- n called a

  A car battery

  The total amount of charge that passesdf.t/ohd5r(, tklv l 7t ux,n* through a wire's full cross section at any point per 5.td,/tt ur*xh ,ovk( llf7dnunit of time is referred to as

  The direction of convention current is taken to be the direction te5h 1jj)o 0piphat

  A coulomb per second is kj;hwa.( qd(pthe same as

  Car batteries are rated in "amp-hours." Thi 6vozdic,c1q/ s is a measure of their

  The resistance of a w0qaa5 bbk njy8ndw+:.ire is defined as

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

  The resistance of a wiro yy bl rot7*k76/h4ojy 4bai.e is

  The resistivity of a wire depokef(w z42yc: /5 ;nd pmdz)grends on

  Which conducting material has the lowest resistivity valuem u,qd36b/way?

  Consider two copper w v+ij+zqx,2kpaz4q kx2)zsv 6btcy zz9s96*kires. One has twice the length of the other. How do the resistivities of these two wisb,z zv2ap2+ckq6 z kt 9*x9isjq6kvxz)y +4zres compare?

  Consider two copper wires. One has twice the length of the o66l6edt /pzuzbc :li*ther. How do the resistances of t*ebdp6/ lz uiz6t6:lchese two wires compare?

  Consider two copper wires. One ha)a oug*xh3w,m s twice the cross-sectional area of the other. How do the resistances of these two wih3* )oa xu,gmwres compare?

  Consider two copper wires. One has twice the length and twice the cro;drhhzz u:y/-: y5z wvss-sectional are:/vhz: dhyr ;-z zyuw5a of the other. How do the resistances of these two wires compare?

  The length of a wire+q 96d0bja oqh is doubled and the radius is doubled. By what factor does the r9oaqjd6 q+hb0esistance change?

  How much more resistance does a 1.0 cm diameter rod have compared to a 2.0 cm d1fjnmp (x ht5+iametfxt5+jp (hm 1ner rod of the same length and made of the same material?

  The resistivity of most commonht x3h f*k,xovjn6 /++jn.mf x metals

  Negative temperature coefficients of resistivi5e: a8zxaf+ sj/)(rjmb* hrqfty

  What is 1 W equivalenbi/pblsh r+96 q4y4wc-0bmw nt to?

  A kilowatt-hour is equiv j.:7zn r4i.b.uaivxealent to

  If the resistance in a constant voltage circuit iu sh)b )llw 9g46jun)us doubled, the power dissipated by that circuit wilj hlu 9 4b))s)wu6gunll

  If the voltage across a circuit of constant resistance is )d2 mpx 0ko wf1,et,9sv0tqqydoubled, the power dissi x 2t0,kfqwq)pdoe vmsy19t0 ,pated by that circuit will

  If the resistance in a circuit with constant current flowiq:0jl3mpim1 xq3)th-m jsm i)ng is doubled, the power dissq i)i mp1: qm3)lt jmx-mjh30sipated by that circuit will

  If the current flowing through a circuit of cywk7k;c0byp/ n zvphr9j:b6 ,onstant resistance is doubled, the power;byjvk ,0y/z9c67rk h wbppn: dissipated by that circuit will

  During a power demand, the voltage ou +oj+dm1ouvj j6dogm tx ;g259tput is reduced by 5.0%. By what percentage idt2jjj6;+v od 5g9+oomxmg u1s the power on a resistor affected?

  A current that is sinusoidal with respect to t1fav7llvr( q fr3pp-. ime is referred to as

  Consider two copper w jub 6prti)ci/ f(+f5cires each carrying a current of 3.0 A. One wire has twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to that in the larger diameter wire i+t5 fj6 /u(bi)ficp rcs

  Materials in which the resistivity becomes essentially zero at very low txirs.-nl(3w ukary , /iq3e+f5e9k k uemperaturesws-ek 3 rayuf kxq 5e(.,irunk9+/3il are referred to as

  What current is flowing if 0.67 C of charge pass ge0/f/ilf 1 kaa point in 0.30 s?

  A charge of 12 C passes through a;p t5gtzf5 pi.n electroplating apparatus in 2.0 min. What is the average current?t5i5 z;ftppg.

  How much charge must pass by a point in 10 s for the ct- y4e6b ph1v39z rjfcurrent 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 i-0f: cym* h-d; hnogs ue60w0e 2rurzqf $4.0 \times 10^{16} \; electrons$ 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 13ml k*nvb u548v.5 A of current, has been left on for 10 min. What is the net number of electrom*bkvnu v 85l4ns that have passed through the coffee maker?

  In an electroplating process, it is desired to deposit 40 mg of silverdk6z8* 9lguzyd9pt3jxva*x ( on a metal part by using a current of 2.0 A. xzvjdk89 p tdgy z6l (a3*x9u*How long must the current 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 is required to cause 4.00 A t93bj5nh;z:aq8fbe fp4a zww8 o flow through a resistance of 330fzabb:8e9 h5j48p;wqn a fz3 w W?

  What is the voltage across a 5.0-W resistor if the current thr2ce-sru51wc -qskzn i sp+x6 /ough it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What current will fl) :/6mfe girr(y kqx6jow?

  A light bulb operating at 110 V draws 1.40 A of current. What is its resigvfz wl8q,f:y 3 0epi4k ;6qrostance?4 i3w;zflq pfkogyq v e,:8r60

  A 12-V battery is connected to a 100-W resistor. How many electrons flow thro5fld(7yfi p-t ugh the wire57pfiflt- (d y in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0. mhcis* -m4hh840 inch? (The resistivity of cimh s-h48*hcmopper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diameter and 45 m long, if )41ww7ps d. ev6ghsjythe resistiv .w) 6pydgjse41 v7hswity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resirzvz0ny4jh1 uk b3u 9*stivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistiv 6ncbb;pja5l,psl/jaox- kg g:657l m ity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long .- bccia* fwsu6cotm- i;j ,u.b-nn5p, measures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the aaigq g(ljtn 3 b5.9)kradius is 0.321 mm) nichrome wire if itla 9gt.ab3 (qgi)nj5k is connected to a 12.0-V battery. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular c(aj30htj oibifv55; 01nqsyu ross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (The r tjyvsi0ia;bj on5u3 1 50(hqfesistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire has a radius of 0.50 mm h(e2um4i65yk b4gvdwp9 sk:rf n f9m0and 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 (resistivi.m 2f0mt mt3 x umjqe9/3.w 9jvbej 71qifql/mty $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resiwrr8p1na/ u/i; *yn to(g ynd1stance 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 resistivi8i vb dwgv7ts 8y:n8:w8) mlz4 f-sorsty 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 det 3qbu v00i9lxeasp/s0(p,hpb ermine the melting point of indium. The resistance of the platinum wire isxs(0bvpi 39 /,sbp lheu0qp0 a $2.000 \; \Omega$ 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 th/u3th w.32fe(wbdwxcaqk 9g .rough an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is9hgq gk:4.2 nqonh es5 rated at 1200 W. What current will it draw?

  A 150-W light bulb running on 110 V draws how much curren 0m/ iy nzp45nvj6)b+aa9z fp1lhmhk-t?

  What is the nominal resistance of a 100-W light bulb designed to be used in,kf: q4jusxzwszjf ;- 33 a3(d jov9dy a 120-V cirffsw4(3qy a-k 3zjd:vudx; z,3o jjs9cuit?

  A toaster is rated 800 W at 120 V. What is the resistancbl5byt ,k0 oo.e of its heating elementl5k t.,o0obyb ?

  A 200-W resistor is rated-x/2i v -of (,i10nfruqgtwo(tr6ncx at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rate90(cfs if8r,d0p ap ced at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used atbmk(:kk)zu ihc64n c1 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is ao 9i o1o617jrl) kjcoused at 120 V, what is its resistance?

  A 25-W soldering iron ruw y.+ bwolxnk-2mil91 d l(td9ns on 110 V. What is its resistance?

  How much does it cost to operate a 25-W soldery+35+5em4tml5uw uoucyqd+iing iron for 8.0 hours, if energy +ltud e3o+qcy w54m55yum u+ icosts $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 heezgh7+wr66h u4p8srn93 j fyours?

  A 1500-W heater is connected tzlx3k;q43fq 38 s5mni /d wnvco a 120-V line for 2.0 hours. How much heat energy is produceds3q n3lc/mi wd8fx5;zk v43n q?

  A battery is rated at 12 V and 160 A-h. How much energy does the battery su4) wqnk(06zkde*iyc9o *gvp*iozr+ tore?o +q9zco*ykur6ez(**i kng 0piwv4 )d

  How much energy does a ,kxr4 dhiz)q625-W soldering iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hoj( lh:la 6ad+lrbq**surs per day. Assuming the power company csjla *bqa :ld*h(6l r+harges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours per day. I4r-2q dvym z.xf electricity costs 10 cents per kWh, how much does it cost to run txy-zv .m42qr dhe computer annually?

  The monthly (30 days) electric bilw/k aw71 3 gk/,tmdekf+s6uuu 20egqel included the cost of running a central air-conditioning unit fo02ke+7t6 es udka k ,gqm/gewfu/31uwr 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 op vajb;-pj,p1 midhh3( erates on 240 V and generates heat at the rate of 2.1 kW. The heatin hj(vd;-b a ph31ijpm,g 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 wire will depend on its temperature.) What effect will the repair have on the power dissipated in the heating element?

  14 A of current flowizj(0nriw ooob .(5 x/s through $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costsq0i,tgs*gih3 k3;lr q qu/)hhlq0w(j q vf*z 6 $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% efficiez 0f5 cy/wsuw)ncy. How much current does it draw from a 12w5)y f/wusz c00-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rms 3m gqwh:v-nv/ current flows thrv3 qv-g:w/n hmough this device?

  A 500-W device is connected to a 120-V ac power source. What peak uua4q vm1a u;1 .stgt4current flows through this devt4t vg;.au 4m1u1 sauqice?

  A 500-W device is connected to xwo23ns2+34py ayjx v a 120-V ac power source. What is the peak voltage acro3jv2xsaw2 34yo xnyp+ss this device?

  The diameter of a copper wire335v2e kx*lo2pwkhsgv v 8 rtoji*1u0 is 0.081 inch. The maximum safe current it 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 of electron carriers in one cubic centime *es oougkhv1tkvri33v2j*5 x8pw2l0ter of copper is $8.5 \times 10^{22}$.)