A device that produces 5cy s*me83vzca: m4r ielectricity by transforming chemical energy into electrical energm m54cvc r83i*yea s:zy is called a

  A car battery

  The total amount of charge that passes through a wire's full cross section att:ib*pt 5e*qw any poinepbti:q5**tw t per unit of time is referred to as

  The direction of convention currq(c.l b5e;,1uxzflb2z4(; l ei6gnb l -s iivxent is taken to be the direction that

  A coulomb per second is the eq*pad.:) jumw)ino )er/0 zcsame as

  Car batteries are rated in "amp-hours." This is a measure (jnb 80h d+7 w;kgwqkwof their

  The resistance of a wire is definop 1wdhu1+4cpf3ry 7 ned as

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

  The resistance of a wqvbv-hv;r ;bf (8 h)sqire is

  The resistivity of a wyo ;n/,b7p x pveo(kg*ire depends on

  Which conducting material has the lowedasg z.lp -c5fqgu sjl6)c;ytld143 (st resistivity value?

  Consider two copper wires. One has twice t6xz6o;uxi/oscoc gp6pug5- 7 he length of the other. How do the resistivities of these two wir c-c6;5piup xzg6os76oogx/ues compare?

  Consider two copper wires. One hashnqbxvkb/ f9m0p)*d8 twice the length of the other. How do the resistances o x*h9m) vf/bnq0bd8 kpf these two wires compare?

  Consider two copper wires. One has twice the ry9; 0xjkkvot)eu :7uu/qy6m4n8udbpk:mr5 cross-sectional area of the other. How do the resistances of 5d0 m/ utj6erkobyr4yv: ;mu u k87 x9k:qpn)uthese two wires compare?

  Consider two copper wires. One has twice the length and twice the cross-section/x apvy 89 sggi19k6cll5/cin al area c/pyl nki s1x6 cavi85ggl /99of the other. How do the resistances of these two wires compare?

  The length of a wire is doubled and the radius is doubled. By what factor do rzua0x+6wo8cua o5et.pr+g1 es the resistance changea6togr xr 8.w+o0c+z 5puau1e ?

  How much more resistance does a 1.0 cm diameter qm5ntpc (uqn/0, / wyarod have compared to a 2.0 cm diameter rod of the same length and made of the samemu,pwa0nyq t // ncq5( material?

  The resistivity of m *4hu:7k:nqmners 0a nost common metals

  Negative temperature coeffi rk1 0odf+v4 t4m zd4/.7u qwwdrr7bvxcients of resistivity

  What is 1 W equivalent ts jpm(2b6:7f 0bpfe-k1fdh v po?

  A kilowatt-hour is epuo t q ;mkmp,f).+s2hquivalent to

  If the resistance in a constant voltage circuit is doubled,9/ci+ yuov); 7lpij;c9bnww e the power dissipated by that circuit p onc/ i+iju yv;ew;b79c9l)wwill

  If the voltage across a circstc l ( a;m2hnp03fg c7dd-on zy(-+bxuit of constant resistance is doubled, the power dissipated by that (0xcpcmbt+hl3sa - nd g2dofz 7n (-y;circuit will

  If the resistance in a circuit with constant citfa2sf3c 19 hurrent flowing is doubled, the power dissipated by that circuit wicfs1i2 h9at f3ll

  If the current flowing throu4s+mppqw x sdv4cc50-gh a circuit of constant resistance is doubled, the power dissipated-wd45cmx4 s+c p0sqpv by that circuit will

  During a power demand, the voltage output is reduo0k ();zsfy(o j/ ybyziuk7dj9 r:(uh ced by 5.0%. By what percentage is the power on a resist0 uojifj)(bz s 7( /rukyyz9k;y o(:hdor affected?

  A current that is sinusoidal with respect to time is referr7h u3o7d oewn/guz p9,ed to as

  Consider two copper wires each carrying a cuxc3 )4,gh(p joij0tgprrent of 3.0 A. One wire has twice thpc4h ,o(xg)j3g jit 0pe diameter of the other. The ratio of the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which thec cm+aivpy9is*o5 8c3 resistivity becomes essentially zero at very low temperatures are pcmos8c3i+c9ayv*5i referred to as

  What current is flowing if 0.67 C of charge pass a point in 02m(xh6x:u6pcu s1 l: v0 nilno.30 s?

  A charge of 12 C pass eniz z;e;doob3s5d/r 2q4:nves through an electroplating apparatus in 2.0 min. What is the average currzq o3v;n5nz;ds4:e/eob d r2ient?

  How much charge must pass by a 9 i t:,hhqbo)vpoint 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 up/ys pfo- d)-.zlgmu,8:wcp $4.0 \times 10^{16} \; electrons$ 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 beecffz4 ,jgu *ja7lvhz5 2m3 kt2:8aq mon left on for 10 min. What is the net number of electrons that have passet2h5ajcj,u:mv 7zkf43f lzg 8maq*2 o d through the coffee maker?

  In an electroplating process, it is desired to deposit 40 mg of sim* m:4 ,a:kegu*pf k.psm *yellver on a metal part by using a current of 2.0 A. How long mue ::,u.a* mmf*gy*slkkmp4p est 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 gmf 7* ;lz f3s1fzq(kvis required to cause 4.00 A to flow through a resistance of 330 7(q zfgsvf *mfk13z;l W?

  What is the voltage across a 5.0-W r+bp:5kh tmrb3 esistor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. Whltncc08l( o2r* 3vepk at current will flow?

  A light bulb operating+m-fdbe q.x2n f))bo/9yqe3 h k6dcse at 110 V draws 1.40 A of current. What is its resistance?3 y /hf)bbmeen. s+)cef9qok-62x qdd

  A 12-V battery is connected to a 100-W resistor. How many electrons florwq iww)86 n3jhdt (v5w through thdr3 jwvwnq8(6h) wti5e wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? (The resisvo 3q lvkjk v7za(0a:2tivi20v3:k aoj7k a l(vqvzty of copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diameter and 4xg) ydjboz44 k 1 /3 xesokrbkvg-:s;*7;n kzs5 m long, if the resistivib; sggkkeyz sxbz-oxn*jv k43k41 ;dr7)s/o:ty is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire *lpa+ gmg01kv. t7mar(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 (resi)pdue nmid3gdxp;e- 8 j yv42.stivity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, measu0mo 2mmvi 2b)bres 0.040 ohms. What is its resistivity?

  Calculate the current through6oz2*ze we,k 7vnh(j m a 10.0-m long 22 gauge (the radius is 0.321 mm) nichrome wire if it is connec7z(heem6w 2k, *jonv zted 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 longu 3enl(w fsb j;j26wr2 and of rectangular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (The rr uljf 3s(b2jn2ww 6;eesistivity 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 a resistiv2 8e /eegm;-98) o/wodlwfaqm no9ya 7lkpl8nity 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) 2s d7/.agn9aymcskt ty $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a ressd7 swjvau .qw1 *b)2e2f(d,uz6gshv istance 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 ri(b6g do iqnwz5l65h c:4gxc 8esistivity 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 melting point of indium. Th r . sgu:laq.l/:c) mndk6gs*he resistance oflh:sg u: .lr/qgm6 dac)*.nks the 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 throz gxvc ipm) 3i:,sd: 63kznim)ugh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at t0 g/ jaa:hm-g1200 W. What current will it draw?

  A 150-W light bulb ruy;m,q x57,7w0 p stj/m p5 eac+-kigvrn b3mzinning on 110 V draws how much current?

  What is the nominal resistance of a 100-W light bulb desim7*nx mbkfq k-,0l8jhgned to be used in a 120km ,*0l8q-mb hk7jxn f-V circuit?

  A toaster is rated 800 W at 120 b2af k(f0r.vyd7k7 weV. What is the resistance of its heating elemenk.dwvfy b7 rka70( ef2t?

  A 200-W resistor is ratednqi p931ecr ijx bqtqp7/o; +; at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is ratq0e/ p:0q zu lh,z7jioed at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at * /b ;+kqga(at/lfdi h120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, what is its rid8 o 4nmx.-,xlrsj5pesistance?

  A 25-W soldering iron runs z1p*f4 4kos 6rf:)my0jggeb ul, 4zkcon 110 V. What is its resistance?

  How much does it cost to operate a 25-W soldering iron fot i.hzfg +9:jkr 8.0 hours, if energy cozt+gk f.h9j:i sts $0.08/kWh?

  How much energy does a 100-W light pbzkq-u k d5/)bulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2p2kqvik; r*v2.0 hours. How much heat energy is pr2* vrkiv2 pk;qoduced?

  A battery is rated at 12 V and 160 shi2o/k:-s p6r nw-hl5v qkq;tyaw :7 A-h. How much energy does the battery store? :5 y vh qa;wl/k7p w6sioh:s--k2qnrt

  How much energy does a 25-W soldering iron use ine-/n8 ;6kl mbmdbtnweyp / 4)q 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. mft4hhqh72p cu.q;5afaeb38o4 1hyzAssuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost to operate th oq;z4he3 ua bf2tqfh8p5 ay7c.m h1h4e bulb.

  A 400-W computer (computer fhuwuqw 87bd2 ,k,s;k0u oiz4+h ;k leplus monitor) is turned on 8.0 hours per day. If electricity costs 10 cents per kWh, ho,u f0euws do;8 k7b;iqk4hhl+w2 u kz,w much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of runnjwa d/i6tty:o(k py 5,(tze3ting a central air-conditioning unit for 2.0 hr/day at 5000 W, and a series connectikda6t3:5yy( ti wpzoj(/ et, ton 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 :y7f/ g,m,uzukcyx4h 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 temperature.) What effect will the repc k4,ym7z ,h:y/xguf uair have on the power dissipated in the heating element?

  14 A of current flowy ;s,k)do 5llhs through $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery cost*4coa :9 tj gdqz/zif;s $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 the2n e;be om +vzlw10jm; rate of 2.0 hp has 60% efficiency. How much curre; mvm ;zn0jb 1wel2+oent does it draw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rms -jut 859tyfl , s5dyflcurrent flows through this devicef9 ltl8t du s,5y-yjf5?

  A 500-W device is connected to a 120-V ac powdh e) smkpu5mc5 3.8ioer source. What peak current flows through th d) epsm. 5oiuck8m53his device?

  A 500-W device is connected to a 120-V ac power source. What is the peak jx wk wl,6c,*cvoltage across txkw,wlc , cj*6his device?

  The diameter of a copper wire is 0.081 inch. Thecrqqiqj:8-m4/u6yg a *cn ; gk maximum safe current it can carry (in order toui:rg/qgqqn- 8; yjkm ac*c6 4 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 centimeter of copper is $8.5 \times 10^{22}$.)