A device that produces electricity by. tkij4 pyjh b30,a.dj transforming chemical energy into electrical energy h.tjdbp. 0j,3a yk ij4is called a

  A car battery

  The total amount of charge that passes through +y(hps- ut +hua wire's full cross section at any point per unit ofy uhuhs(t-+ p+ time is referred to as

  The direction of conventiocjbc2+-a + bxdn current is taken to be the direction that

  A coulomb per second is th3-7 4dsbzlqsd+ 6iaz xe same as

  Car batteries are rated in "amp-hours." This is a measure o(fb/zml*t lr :f their

  The resistance of a wire is d gvx.r+c.ho :fefined as

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

  The resistance of a wire isv4tqp muw43ry )2h f+s

  The resistivity of a wt2uje a0zt 8+ b;5qqe.gfc,xaire depends on

  Which conducting material has thes-2 i /mrs yo *(oikx)4)nytip5da47m9nkobo lowest resistivity value?

  Consider two copper wires. One has twice the length o5jj. dygk;r a ts:4b6fc z-*ejf the other. How do the resistivities of these two wires compar.zg56 f*:jay4kjtcsjdebr-; e?

  Consider two copper wires. One has twice the f x nvot4w;q,4length of the other. How do the resistanf;q4 ovntx4 w,ces of these two wires compare?

  Consider two copper wires. 2)vb+8lcs.8fcshvm/z umn +d;b b;5kw x:fu pOne has twice the cross-sectional area of the other. How do th zc:.c8f2vsvb sk+mlx mp;d5 )bw;/uun+ hf8be resistances of these two wires compare?

  Consider two copper wires. One has twice thrzto/n ki b8cgdk 6c((1hl* a7e length and twice the cross-sectional area of the other. How do the resistances o1(d/aotzh( 7cn*8irck l6bk g f these two wires compare?

  The length of a wire is doubled and the radius is doubled. By what 9 drvh -;: l:runiax.xfactor does the resistance change?nar;iul9:- rvxd xh.:

  How much more resistance does a 1.0 cm diameter rng 1 jztyo( bg/k0;y-yod have compared to a 2.0 cm dia- kyt(y ;gzo 0y/jnbg1meter rod of the same length and made of the same material?

  The resistivity of most come-.dot:6dq5tcwd )j w r kp8g0mon metals

  Negative temperature corf: tks5g0s yz rf:u- .f/omc(m(pso9 efficients of resistivity

  What is 1 W equivalent tt mp9;wc(/fi z2 n8y/jyjg l;wo?

  A kilowatt-hour is equiva( ris6luf t1a4lent to

  If the resistance in a constant voltage circuit isqvi -zk ,fs l jh032sqls3426puo r.kj doubled, the power dissipated bvrj3s.qizq06-3ljp lk ,2 usk oh fs24y that circuit will

  If the voltage across a circuit of constant resistance is 1:bnxt)2 pgpg doubled, the power dissipated by thatxb :2nt)1pggp circuit will

  If the resistance in a circuit with cov0 v* 1limk,rlnstant current flowing is doubled, the power dissipated by that cirr vli*,10 vkmlcuit will

  If the current flowing through a circuit of cons ;b kk4, +eyw:8t iljs ge-ftzmwml259tant resistance is doubled, the power di;iw stegb:5j fe2 zkwl9ty,mlmk8-+4ssipated by that circuit will

  During a power demand, the voltage output is redle*su vv+ g4/( z7qpkhuq7.u kuced by 5.0%. By what percentage is the power on a ruukq(hsl .zpevgvq u/ 47+7k* esistor affected?

  A current that is sinusoidal with respect to time is referre sn+kea.8dgzw0i- sn5d to as

  Consider two copper wires each carrying a current of 3.0 A. On* +bsk vy2o:db8m 3:ka -pkxuse wire has twice the diameter of the other. The ratio of the drift ve- ko8ks: a2vbmy:kub3*dx p+slocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becet;u r1(+zh ,+cafn 3gz +jscqomes essentially zero at very low temperatures artf(ze;q1 chu,+++na zsr3 jcg e referred to as

  What current is flowing if 0.tfoz.u3lpyw 8q.l0. hx 8 1zzz67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating appara;zyh8*j i zbdy )o5i1ctus in 2.0 min. What is the averagzy;z 8 h)1jo*5 idibcye current?

  How much charge must pass by a poipv;;ir6o2( b x hk3qzcnt 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 flowcs:w;sf u1jx v:s7 8voing 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 mranyktngo2br/+d 3 5u m36/g for 10 min. What is the net number of electrons that have passed rng3br+t nk53g /um2d/moa6ythrough the coffee maker?

  In an electroplating process, it is desired to deposit 40 mg of silver on a me7/3 thb8wjm:uatmy52vi e z k 9f+5judtal 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 a9kjmuj hwm5dtey78f bt:v23z+/ 5 ia ure singly charged, and the atomic weight of silver is 108.)

  What potential difference is required to cause 4.00 A to flow throl1 ) km l)ol4lk;bhzd4ugh a resistance of 330 W?4)k1 b;)kzllollm dh4

  What is the voltage across a 5.0-W resisth1l4o;o z*axwm b ;k;gap:ar26nl(q mor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. Whu phq( oyh2c449cd 6plat current will flow?

  A light bulb operating at 110 V draws 1.40 A of current. What is its resista:rbg5je )*ycd u uz,j4t+ge2y nce tzy*jdcuj,+ ggue rb y42)5:e?

  A 12-V battery is connected to a 100-W resistor. How mannmqb4 +oun-a/ m/gljtlp+) .x y electrons flow through the+/)t ljma+u/x-g b ln n4.ompq wire in
1.0 min?

  What is the resistance of 1.0 m copper wi ,*ci2;m - ykokl/brplre of diameter 0.40 inch? (The resistivity of copp *,;p2lbrkykil cm/ o-er 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, lee*l:jun 7g:if the resistivity is 7j: *:nueellg $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper ws 8ixhb,l l sy .+oy7:iiptp9sjw/1v)ire (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 (resistivity r mcu*-m;i, 5f+iwbym p;:hz d$1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, measures 0.0h e/x9qp)8kc2gxkk, sl1b )dp40 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius i9).k ygf ,r j1arojhr c8b.vd.s 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. k.cb8 .ord.fga jvr1jr)9 ,hy(The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cross-section, 1.0 cm x 2ia d6g.m0.9bzmo+ vke(bblod5(wo 1c .0 cm. What is the voltage dropb d9 5 ib.o (a.coe(0mz kdblovm1+6gw 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 nichrome wire hasv ubx721i8 ye qpu(u6u 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 copf; u*/1 5;q9r3v pzgrnp*p(iygzzwd jper wire (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 rk,xwfi.:-z21qs.r b3b+ bncatey 7 xa resistance 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 of5fmv/mfir0 fsa .d)t ) 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 determine the mel192qpzva. xplting point of indium. The resistance of the platiql 1ax.9 zvpp2num 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 throu 8ri0x)c *v9zhg3 45mhpe atpygh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current will i 4 u wixvcmlw,6e,ovr )+9x+dqt draw?

  A 150-W light bulb running on 110 V draws how much currsma ;:xn.c7 sz,gjf. yent?

  What is the nominal resistaa w,v-po /*s8d(smlvgnce of a 100-W light bulb designed to be used in a 120-V*d/,vowaspv(l8 g sm- circuit?

  A toaster is rated 800 W at 120 V. Whatvg7tg)6vo3 * 7pr1 *atup- 4pgaupqfc is the resistance of its heating elemen3* v-4cu*q 16 r7agg7au)vftp g pptopt?

  A 200-W resistor is rated 1tqrkby/gx 2,m xiy*4at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is r-d 8f n zyxr23-xhb-rrated 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 it drz k)c0 -ewdv)raw?

  A lamp uses a 150-W bulb. If it is used at 120 V, why3e nmw jlg0/,rry a1m, /urv-at is its resistance?

  A 25-W soldering iron runs on 110 V. W ml ffxnb:(1:that is its resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0 n zc6f:t+n tffm- we6h(5g: /yt hjus8hours, if energy (y6+f6 jn:/h8hzu f:cs gt-ttn me5wfcosts $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 ho1/ uzdaxd 2cfx,6;cig bq ,/v v+i(ynvurs?

  A 1500-W heater is conneck h*8eq4yt-ot ted to a 120-V line for 2.0 hours. How much heat energy is prodqyto8 *he4- ktuced?

  A battery is rated at nu -48 h/b 1apirh3 q.zjnj0qh12 V and 160 A-h. How much energy does the battery store?pn z1 -30hhauq4b j8qj/.hrin

  How much energy does a 25-W soldering iron use in 8.0 hours?w2oc -wut :x0 l*b2x)ltzh;rmbt h.7r

  A 100-W driveway light bulb is on 10 hours per day. vi qdb/y;sz+zs3 gcp. fh879fAssuming the power company charges 10 cents for each kilowatt-hour of fih+.dz9 c;7ysp 3f8vszgq / belectricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turtaw 0va f/n,6m.rq bj2ned on 8.0 hours per day. If electricity /,a0 trna. vfmq 6b2jwcosts 10 cents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of running a central ai vo1k, eu4-;vt07ph ux5azgtr r-conditioning unit for 2kovavh ugt4 ezx50;r,pu1 7t -.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 zl+6s:lmf o1nqgz5(tj1f x9d 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 wire will depend on its tempsmftf:1l j5+zdlgzx noq 6(19erature.) What effect will the repair have on the power dissipated in the heating element?

  14 A of current flows throd- m5gk8o ,uaixn1/ izugh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costslz;2rww)x*fy/0w g: yw ,inio $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 worbiv l5/8 /zypyk at the rate of 2.0 hp has 60% efficiency. How much current does i8/iyzp5v y/lb t draw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source.z kca5* lx,ljuv(60p k0m ges1 What rms current flows through thisz10vskjgl mac6ux*( ,5lk 0 ep device?

  A 500-W device is connected to at-k peq)73zsw u,/ ngb,6r qon 120-V ac power source. What peak current flows through this-6/zqq w3 n rgbekso ,ut,7n)p device?

  A 500-W device is connected to a 120-V ac power source. What is the peak v+v hbb c+6 13u/4;hktj btk4j e.t2nkm xyvf9holtage across this1cv;tx kbh9uk+6 /h4m2 b3vjbkytj 4+f.h nte device?

  The diameter of a copper wire is 0.081 inch. The maxsj;nd cc.frz,qmig-7 /guhw+ e g 1r6mow v73,imum safe current it can carry (in order to prevent fire danger in building construction) is 20 A. At this curre w+- g;quc .e6 f ,/gjr dwr3oi7zvmmch1g,7nsnt, what is the drift velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)