A device that produces electricity by transfiglukyg :u l0sf3x-2.orming chemical energy into electrical enkl-sgxf :ygul0 u32i .ergy is called a

  A car battery

  The total amount of charge that passes through a wire'st3pfrhpfz 32: l c0*rr full cross section at any pz: 3 2ppfr0tlrrhf *c3oint per unit of time is referred to as

  The direction of convention cur ,065w q z,ngyxh6xkzyrent is taken to be the direction that

  A coulomb per second is the fs(4h:yrh s4 :h cihj1same as

  Car batteries are rated in(ef zc0jei xyn230,ud)rs:f u "amp-hours." This is a measure of their

  The resistance of a wire is defined a+2 lcxvv+oq;jh*y :wktcl,q7 s

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

  The resistance of a wiv-5q1odfc3b mrwuau a**qj 77mz4hl, e , sh6lre is

  The resistivity of aw im) l0 rqgbvm*y(4yrz12oi* wire depends on

  Which conducting material has the lolo3ibp./vydch .z 44ilrep9*s g4 dc pv/k6;owest resistivity value?

  Consider two copper wires. Ox,leyl7 :rve;8 xpa*kne has twice the length of the other. How do the resistivitiy: , 78eak xel;vrplx*es of these two wires compare?

  Consider two copper wires. One has twice the length of the othkrk 5pm3d; ukmqf,d: 3l v,-pqer. How do the ref:,dm-ulr35 mdpv3k, kkq p ;qsistances of these two wires compare?

  Consider two copper wires. One has twi70;e frxxy ( nxu/z7io/irvj5ce the cross-sectional area of the other. How do the resistances of these two wires comvnze iroxixx/;/y(507 uj7f rpare?

  Consider two copper wires. One has twice the length and*v 87t9lxa8s2ippoej(byw g-y d02 b h twice the cross-sectional area of the other. d8 o ibb029telwsy8p *vx7-g(ayphj2 How do the resistances of these two wires compare?

  The length of a wire is doubled and the radius is doubled. By what factokr:;+ no60b7onuw ftar does the resistano n7:uk0nrf;a b6 tw+oce change?

  How much more resistance does a 1.0 cm di ptf// qpjb)l i+)rtx(ameter rod have compared to a 2.0 cm diameter rod of the same leng+tl ip/ rj)q pb)f(/xtth and made of the same material?

  The resistivity of most com4 xnu+fj8.f8p ,6jmtx wt kx(pmon metals

  Negative temperature coefficients of r-;ck gevn8:civn4o)cesistivity

  What is 1 W equivaleiq jp- s1*cwu7nt to?

  A kilowatt-hour is equ y97uk9c9i iz 4q; m5cf,a dj1sdqhd7e qgd98divalent to

  If the resistance in a constant voltar hhnha 7m.uh+1d c3+ lhk(y4hge circuit is doubled, the power dissipated by that circud43h++hhly1 mhrkhc7( . u nahit will

  If the voltage across a circuit of conmb*wk,i** w mb3uam1lstant resistance is doubled, the power dissipated by that circuit willb*m* w 1 ba3wkmmi*,lu

  If the resistance in a circuit7 k(,ve pxl,av with constant current flowing is doubled, the power disvl7 x(v ,,ekapsipated by that circuit will

  If the current flowing throughbh*ry8 yh+.-:nelbyn*e sxr 0 a circuit of constant resistance is doubled, the power dissipated by sy xh0yb*rn+b- neer:lyh8 * .that circuit will

  During a power demand, the voltage output is reduced by 5x ,)y t2txtz57qq,sf e.0%. By what percentage is the power on a resistor xztte7 tx2,,f )yqqs5affected?

  A current that is sinusoidal with respeqb7wp4hlduik 00)4e d ct to time is referred to as

  Consider two copper wires each carrying a current of 3.0 A. One wire hanghw);,8b) g ccuz 6wl.u/3xcd lg;nfs twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to that in the larw hzn /c,u f bgcuxcl w)l)d.36;g8;ngger diameter wire is

  Materials in which the resistivitytyh ho7.jz. 5v becomes essentially zero at very low temperatures are retvyh5 . 7o.zhjferred to as

  What current is flowing if 0.67 C of charge pass a pointoo:5je r *waj4p skj12 in 0.30 s?

  A charge of 12 C passes throulkupa72ec-d5kgg+f:- ) cy iugh an electroplating apparatus in 2.0 min. What is the averu:lk-fk-agg)i+ up7 5 e2c ycdage current?

  How much charge must pass by a point in 10 s for the current to be 0y35v:wh7a ,znaz/ oas .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 flow.,ev6h.jvwy)s ze/q x ing 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 beefx .j4vrl5w 1bt(qw7*gq,u )xww ;epun left on for 10 min. What is the net number of electrons that have pasr4;pugxjq 7 .(u5 1elbxfqw ww)wv,*tsed through the coffee maker?

  In an electroplating process, it is desired to deposit 40 mg of95eg*mlmqv 5 e 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 m*elg95q 5emv silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference is required to cause 4.00 A to c(iai( ekn rgq5:ip;f imqo /mm7 ,+,rflow through a resistancemmm a,/c5r oiinf(iie+ (: prkgqq,;7 of 330 W?

  What is the voltage across a 5.0-W resistor if the currentign4 p728iceo through it is 5.0 A?

  A 4000-W resistor is connected acv9 nnj6mj)0 p eml)gi(ross 220 V. What current will flow?

  A light bulb operating at 110 V draws 1. iuct(x+aq/2b;3jex d40 A of current. What is its resistance?at i b ux+x/je3(c;2qd

  A 12-V battery is connected 53suwse+nk4p+a 5prn to a 100-W resistor. How many electrons flow through the wir+n5up3w4e nk+a5rs pse in
1.0 min?

  What is the resistance of 1.0 m copperfnb. apam ukqqj3+459 wire of diameter 0.40 inch? (The resistivity of copper isbnpmf+k.5 u3a9q 4qja $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in qm zx9*z*ywn6 diameter and 45 m long, if the resistivqzy*nwxz *6m 9ity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wij18ej9u zg7z1y y:i p:t20u7dg sre xqre (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 (resistivityq*r10+k x6av :/pf yxfsv ga(s $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 resm: 0e1sssz6 asn x/9ouistivity?

  Calculate the current through a 10.0-m1fuz4 0ubu3 e xo3zd.e long 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. (The resistivity of nichromxb . duo0z4eez3u u3f1e is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm longq2a:q .4k urfm/b b)aq and of rectangular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its lengthabakqb)2 .mrf uq:/4q 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 has a radius of 0.50 mm and ak9 dol6t,( -gur5 dmzt 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 wire4aip7b:d f:j sh24aio (resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a ry/n+8 ot t -gv+jl6hycesistance 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 plati*y6a9*efpfuj9f ih6pct7 dw+ 6yq m8dnum 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 ij)y8k(jijmkf( 0rg 0 7okh5 s qs7.cotndium. The resistance of the platinum wire hj(0 mc)yrk.8qo f70 kj(k7sg jito5sis $2.000 \; \Omega$ 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 through i91 :/u g;:iv)bfpoxuubil r- 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 draer0k0iaez7st )sh.hw z3m69tw?

  A 150-W light bulb running on 110 V 2 5f;n149xyieuexogr.eh g w;draws how much current?

  What is the nominal ress/y mb/pn +yk(va-u yln q9j0/istance of a 100-W light bulb designed to be used in a 120k/n (aqj0l /spy v+mn by9uy-/-V circuit?

  A toaster is rated 800 W at 120 V. What is the resistance of its heatwtw36p4vwypt 3a1oac10 b;zcing element zp1aayc0 ww1v w;bp6t 3c3to4?

  A 200-W resistor is xa zufd5eu +-k)zrd)wy+* ( ehrated at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rat,s3dv4k6o;sxl + dmepk( pq(oed at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bule7d e kd0l7/yq 0+rarnb. If it is used at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, what is its resistancelmbepa 918g- v?

  A 25-W soldering iron runs on 110 V. What is its resistance; jf(ft*jnj .: w/bziz?

  How much does it costai8 16bt3o xg gevd:,r to operate a 25-W soldering iron for 8.0 hours, if energy costs eadv1 ib,683 xtgor:g $0.08/kWh?

  How much energy does a 100-W ligzt4w yq2j)p a8ht bulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2eljno(ew/(i rlv 2i79.0 hours. How much heat energy is9/l7(v2jeeow nr (iil produced?

  A battery is rated at 12 V and 160 A-h. How much6 n wa ufa)dvo0:x1:lo energy does the battery store?o)d:vwa:a 1 0ofn6lx u

  How much energy does a 25-W s i7lyo: 9iy gle),72wz j;oxcpoldering iron use in 8.0 hours?

  A 100-W driveway light/0 srbc mp7eo0 bulb is on 10 hours per day. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, ese7b ps0 r0com/timate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0em 7b42)1 yi1cg*rcr*g gf ipt hours per day. If electricity costs 10 cents per kWh, how much does it cost to run the comgg *1itfr )c4m c1yip2*ge 7brputer annually?

  The monthly (30 days) electric bill included the cost of running a centrad:ozyu ;gcw,l2 4bjes/a ze*3l 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 :/;doz 3l2j y gb*aze4 uc,wesbill if electricity costs 8.0 cents per kWh?

  The heating element in an electric drier operates on 240 V and generates hee -)c)n j.y kxvc53wjiq7o9xgat at the rate of 2.1 kW. The heating element shorts)yqxej7vin kcc)w 9 5jxo-g.3 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 thrmhf m;.zw(g4m/a7e r zough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery cost dt(icqbt8 b(ld7g, 8ns $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% ef-c8d6g x ry0hnficiency. How much current ddr-ncxy g60h 8oes it draw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. Whajp ,q x6 )gt.xx a3h/fo*tphcyae:w4*t rms current flows througtqogxa3yf a* .pp6: /cxh wt j*he,x4)h this device?

  A 500-W device is connected to a 120-V ac power source. What peak cur vok a i;;50rd(fx6wcwrent flows through tac;ofwk6 wrd0iv( ; x5his device?

  A 500-W device is connected to a 120-V ac power source. s.z 0kigsrsr55a.e p g:8l1yeWhat is the peak voltage acrose .lgy01ra gk:ssp5z8.rsi5es this device?

  The diameter of a copper wire is 0.081 inch. The maximum safe cq.ar(e m2( devurrent it can carry (in order to prevent fire danger in buil da .e(2mr(qevding construction) is 20 A. At this current, what is the drift velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)