A device that produces electricjig0*)(u jxcbiygb:)ity by transforming chemical energy into electrical engb)) y(ujiigcb:0*xj ergy is called a

  A car battery

  The total amount of 673c 9 *e0nuudae epw8h ;kf k+bnab4ucharge that passes through a wire's full cross section at any point per unit of time is referbe9e4bw af; 0*a ke+cuh 3n6 k7pun8udred to as

  The direction of convention current is taken to be tv1mk,mp q8vjqru0zgt,5n*:a he direction that

  A coulomb per second is th g5jkcqk* )7q z.zpdk.e same as

  Car batteries are rated in "amp-hours." This is a measure om8n2)vh0qw7 nj2 tjdj f their

  The resistance of a wire is dergaz0.h mx a/;fined as

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

  The resistance of a xdxl6 j -glr7,,n+ncn wire is

  The resistivity of a wir,m;wkd an;vt* 0c qm1ue depends on

  Which conducting material has the lowest resistizyd hhl28mxsbkf,) 1/ vity value?

  Consider two copper wirfii6o8 ev6u er9bw5 2qes. One has twice the length of the other. How do the resistivities of these two wires compar iqfubo8i2 r9v 665weee?

  Consider two copper wirecqj ofdv m(*xj/y;j7k6 -hav9s. One has twice the length of the other. How do the resistances of j6fxdo vay jjc-hm*;9v/(q7 kthese two wires compare?

  Consider two copper wirx1zeqdr;v 7xri)f ;zjy 1;(xqes. One has twice the cross-sectional area of the other. Hxief;j1q ;vrr1zq 7zyx (d); xow do the resistances of these two wires compare?

  Consider two copper wires. One has twicetou,*o 6qq;e:c 8ncl t the length and twice the cross-sectional ar 6qcenloc: uo;q*tt,8 ea of the other. How do the resistances of these two wires compare?

  The length of a wire is doubled and the radius is doubled. By ,uuvj (e; 1)c g4ru(1 txgipoclu 4gt;what factor does the resu1t (uvig4ju ex(,oc;gptcrgl) ;u4 1istance change?

  How much more resistance does a 1.0 cm diameter y .+ m f2mbyk 1w3o)a(puh5dohrod have compared to a 2.0 cm diameter rod of the same d+ 31.ah yb oof5u( wp2h)kymmlength and made of the same material?

  The resistivity of most comylrocb x) 8d ezwc.ria645. 2zcw;-f qmon metals

  Negative temperature coefficients of re itksd9sa5ej1nxtq 8(5tp*ula er:9 ;sistivity

  What is 1 W equivalent ew k:bs .hqx0)to?

  A kilowatt-hour is equivalhx1loy7wp- 1 kb -kgj(ent to

  If the resistance in a constant voltage circuit is doubled, the power d5t yzad 7;6ur3*wgziqissipated by that circuit wiliw5gzur3zd6;7yq a t*l

  If the voltage across a circuit of const2qvph0hyo53i ant resistance is doubled, the power dissipated by toyqi5 v023hh phat circuit will

  If the resistance in a circuit g u+ e8qz ighz,9+1uvfwith constant current flowing is doubled, the power dissipated by that circuig91z8vf, +egu+zuhq it will

  If the current flowigbx ln iumm6qm1*;-4ung through a circuit of constant resistance is doubled, the 14xm- ul bumn6*;iqmgpower dissipated by that circuit will

  During a power demand, jo*9hobj.p ;bbr dh(exp /,e(the voltage output is reduced by 5.0%. By what percentage is the power on a re,b(bj;hp pb*h ojx9odr /.e (esistor affected?

  A current that is sinusoidal with respect to time is referred *nfzcg81yv qqq 3- i8ito as

  Consider two copper wires each carrz) )0p9t-hste zg8z +hgvtr0uying a current of 3.0 A. One wire has twice the diameter of the other. The ratirp0z0tv 8g hzts-eth9ug)z +) o of the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes ep6g jqv9q2w i,l .l/vzssentially zero at very low temperatures are referrep wj9v2/zlv i6gq. l,qd to as

  What current is flowing if 0.67 C of charge pass a point in 0.30 svou*) u,/ b0 cco)bsm cttb,t.?

  A charge of 12 C passes through an electroph49n(s hzh7ogbxf53 .fr6qdl lating apparatus in 2.0 min. What is to7 xzhqfh (db6 gf3 rl.ns9h54he average current?

  How much charge must pass by a point in 10 s for the current t9c v ,5ojg-igeb 1+y.agi6xfto 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 ifmvx36/ub *v z4hn6cdj $4.0 \times 10^{16} \; electrons$ 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; t upg2qqf9-jbri3a 2 A of current, has been left on for 10 min. What is the net number of electrons that22pqj- qfi3a ug9b; rt have passed through the coffee maker?

  In an electroplating procesxseu5b27aw0 4atl d-gm -u; xls, 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 current be allowed to run to ds5b;2x -70 4awx m utea-lguldeposit 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 to wlbe e*69oa ka6:8m osflow through a resistance oeb 6eoa6lm8 9so:* akwf 330 W?

  What is the voltage acros tpqt lnx+/:dz47ed(fs a 5.0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What cur q+;ru+-u++dr 2e)tz wgqecu ngal4/lrent will flow?

  A light bulb operating at 110 V drawg0se ee;xi,ot za34,b s 1.40 A of current. What is its resistance?s eg 40tize,oex; 3ba,

  A 12-V battery is connected to a 100-Wc2g 1np ru9g.b resistor. How many electrons flow through the 1cn2 g9g.buprwire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? (The resi f+oo zwn0*))h 24h7wmpi ckmvstivity of fzh) w2wv+* poom4h m0)k7cin copper 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 u, k5w jqud(3ds tml73sbig)4 the resistivitymdj4gb,3)kt 7 (wl iuq35us ds is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper /2tfok cz e(i.wire (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 (resistivitejq2ltj pa.zt)3 y4 x2y $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 resis3oz,a3,zi)lcw m,b w- pu;t +3qctjmetivity?

  Calculate the current through ahmyjxv*9m.g5z.a -* nojfzt)y-mr2 z 10.0-m long 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. (The resistivity of nichrome is.) gzr5yjhn tzm 9*-.mo-xza2f*mjy v $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rz.7rzwr- zjq uq+o j-)ectangular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (The resistiviz-u.-r qo r)j+zzqj7wty of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire hahi:zad 4: u ;qt/4vtqns 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 (resistiviti9 w06sd ru8ejy $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resistance of /h krxtf(9 ty*z49dom$18 \Omega$ 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 o2)c /cano7bgg5w +,k6uogd sn f 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 poi 1et5 )r 8vqggm6;0l+zcpnyov nt of indium. The resistance of the platinu 680om5vrgqc pv) +tl;e1zngym 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 throhxob/+h 2t *jhugh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 44uzpu1.syx xp1s tn7 W. What current will it draw?

  A 150-W light bulb running on 110 V draws how manvx kpqda, - e3f42y5uch current?

  What is the nominal resistance of a 100-W light bulb designed to be used (qcn+qk3n;it5n*m: qdy:xz z in a 120-V circuinm n yk: z+n3; qqcd*zt5:qi(xt?

  A toaster is rated 800 W at 120 V. What is the resistance of ih3el4 dz) /kulzoe2-h gnd96hts heating element?)khl2he h 4u/n od3-gd9l 6zze

  A 200-W resistor is rated at0m uas fpr pb4kl6cj*a44 (rl7 $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rq-ft95nop hhrvp2 5 :jlt+mc :ated at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used lqf6h fqd21jmnxt/1/at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V(vvysdi;/hy q+le)x:c3u 6 (p95e 6gp lahgjk, what is its resistance?

  A 25-W soldering iron runs on 1 .ek -h 7.xdq+jdiqou:10 V. What is its resistance?

  How much does it cost to operate y)gja uy6m 104cc*t c4k8yxu aa 25-W soldering iron for 8.0 hours, if energy costs cuc*yjyu 4t146ak xc8g)0ym a$0.08/kWh?

  How much energy does a 100-W light bulb use i kouifm-:nw94o vh02p ve3+drn 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. vdb 0slpa u5iu-, te iuz88)y2How much heat energy is u bau0lzi)85-isey8 2tu , vpdproduced?

  A battery is rated at 12 V and 160 A-h. How mucy9l (,gm rq;rjh energy does the battery store?m(y ,;lqrrj 9g

  How much energy does a 25-W soldering ironfvqm 4 y3 4v62rvyrz/ut+a ci4 use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Aslara2(i9pc a 2ouc/38r jk,zlsuming the power company charges 10 cents for each kilowatt-hour of electricity used, estima 8kurc2 /,olc9(pr2 aaizj3alte the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours per daszcu5pq4)lh, bp4gk0 y. If electricity costs 10 cents per kWh, how much does it hb5pq4,kzu pg 4l0 )cscost to run the computer annually?

  The monthly (30 days) electric bill included1kd vu)z 84,lhb)vm.keps -oy. j5 ,oghfurf/ the cost of running a central air-conditioning unit for 2.0 hr/day at 5000 W, and a series connection of ten 6p8 ) m1b,/5j.uz)h-gfof ,. lyusk rkvdvohe40 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 operate (7h * pkuicxarcl9q,cm97:tws on 240 V and generates heat at the rate of 2.1 (h tp7 kq*ricc9, :a7lcwxm9ukW. 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 temperature.) What effect will the repair have on the power dissipated in the heating element?

  14 A of current flows throua5g/ihxh1tyy;6 .jnw gh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs i es 4(znwmr7 v9 5)z/u;gkmt+r8jq gm$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% efficiency. H)xltsez r d+n9xyc36t-r o /-iow much current does it36e oz +xi)rttsdn y/l9crx-- draw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ai a1e 00o hicr51sklk3c power source. What rms current flows through ekair35ok0 si1c0hl 1this device?

  A 500-W device is connected to a 120-V ac ig;)v(pz *b mn9z 5(k;atz2tfd vu4 ubpower source. What peak current flows through this devicv)(nbtf;2pv*u z4;m(9u gtb azikdz 5e?

  A 500-W device is connected to a 120-V ac power source. What ivxu , :.6 48uorqfephs-,hl 4gkhc)l ps the peak voltage across th-h,c ou)f 8qrx6: pl4gvskp.euhh4 ,lis device?

  The diameter of a coppezv 7b pk0-o)dfo*gq,rr wire 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 ther70 -b)gvzdpqfk o*,o drift velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)