A device that produces electricity by transforuus mfj/u6l+ 1ming chemical energy into electrical eneuful j s6u+/1mrgy is called a

  A car battery

  The total amount of charge that pa dcvwwmk yc+sk(17.j-sses through a wire's full cross section at any point per unit .c7kkm(wc wv-j +d sy1of time is referred to as

  The direction of convention current is taken to be the direction th0jqjwf25 d6y/lt/ s.ovu.f- (qo kh cwat

  A coulomb per second n 7 z.gxmq++(av 6pghcis the same as

  Car batteries are rated in "amp-hours." This is a measure of au2h0(b 2 meiytheir

  The resistance of a wire is j45)dxj:pwf1); o hrnyl(nez defined as

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

  The resistance of a w4+f*7yujbe nq ire is

  The resistivity of a wire depend6 vzdoy- dw cj+5(ed1sf. ks.ts on

  Which conducting material has the w(+ttr egqzu1e+85em; )x vg zlowest resistivity value?

  Consider two copper wires. One has twice the leng +zs( c0p. o/twkdj3rsth of the other. How do the resis rksjzd3 .w0t+co(s/p tivities of these two wires compare?

  Consider two copper wirehn/8qx ;xo oy+:zlw kgxzp*3*s. One has twice the length of the other. How do the resistances of these two wires cqxz/ln8g:+p* kox3x*oyzw h;ompare?

  Consider two copper wires. One has twice the cr6si*ncwoggtja- ea; l /)3 od8oss-sectional area of the other. How do the resistances of these ta-e 8ctd j3/)gsa*l iogwno;6 wo wires compare?

  Consider two copper wires. One has twice the length and twice the cros; vb206j yv7rgomov s5es 0:dds-sectional area of th yso s5evbjg2v67 ;d:mdrv00 oe other. How do the resistances of these two wires compare?

  The length of a wire is doubled and the radius is doubled. By what factor6, /e ood+lues does the resistan,o +ou/dse le6ce change?

  How much more resistance does a 1.0 cm diameter rod have compared to a xdv5n2 ,-f6n:k7 d b.ird5,zyqkyja e2.0 cm diameter rv 7dnd.fryqi -k ka5e26b: 5zdy,jnx,od of the same length and made of the same material?

  The resistivity of mosjnh5j ka:/ujh/g-,td t common metals

  Negative temperature b4 qukz9tq-1edng:-icoefficients of resistivity

  What is 1 W equivalent o 6g++:tdr,6 rvq: lwwlsfwe*n 1 rn0dto?

  A kilowatt-hour is equiwz/3i2s(di xy valent to

  If the resistance in a constant voltage circuit is doubled, the power diss2w gc h(c3 x ;-zc;;ljope:zlcipated by that circuit jch2;3w z ;zg:xpclo( ;c-lcewill

  If the voltage across a ci 65fpbq4) rr(.fx uvycrcuit of constant resistance is doubled, the power dis)b 4q5y .urfpv6 x(frcsipated by that circuit will

  If the resistance in a circuit with constant current flo*:ol ;i jzxkk8wing is doubled, the power dissipated by that circukl*j;oz 8ix:k it will

  If the current flowing through a circuit of conshpd5z9ui 5p+0ftq 3v qtant resistance is doubled, the power dissip + hq0v ufdzt955piqp3ated by that circuit will

  During a power demand, t :y3 1kp1eabhxn9fx4s he voltage output is reduced by 5.0%. By what percentage is tx:p9sa1 nf 1byhke3 4xhe power on a resistor affected?

  A current that is sinugt.:wwg+tq ,ysoidal with respect to time is referred to as

  Consider two copper wires each carryingk) 5gn mv;2hd c)r4; dsogtxt nzs-0u. a current of 3.0 A. One wire has twice the diameter of the other. The ratio ) s.d;kn;cvudtgmnr h gsz5-tx2o0) 4of the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially z9*t1xdwy , o9 pvlqu2jero at very low temperatures uv9,* opw 2ydlx qjt91are referred to as

  What current is flowing if 0.67 C of charge e sh 4qu(bua43pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating apparatus in 2.0 min. Whayqj5e/ vd8 lm)t is the average current ) dejl8mq5yv/?

  How much charge must pass by a point in 10 s for the curoc d:zo( k0yc,n k7,vjrent 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 vmkb.u 0;. cwrrtz;q* (pnt4mif $4.0 \times 10^{16} \; electrons$ 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 g ohm6v28kr;u t18d epfor 10 min. What is the net number of electronp1 8 2gvhr;m6 e8kdtuos that have passed through the coffee maker?

  In an electroplating process, it is desired to deposit 40 mg of silver on a mancvx;3(jsema6 .we .etal part by using a current of 2.0 A. How long e3anvsjc(.6 e.xwm;a 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 to flow througiii9d*soww, d6 9-p zqh a resistance *ziww,9q 6sdii9- pod of 330 W?

  What is the voltage across a 5.0-W resistor if th lkug ( ygu z:h4,f,(df1n5i/ xjrtp2fe current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What current will6f7- hw uakvb ychx+ yi5bi6e/e (; n.pg6wn.q flow?

  A light bulb operating at 110 V draws 1.40 A of currewu f+o,7f ( peq-uty3tnt. What is its resistance7we-ptt ff ou (uq+y,3?

  A 12-V battery is connected to a 100-W red0oyjchl8/b9 obu +lpu -vi;3sistor. How many electrons flow through the wire ilu38yo bd0c/liv ;ho9jb+ -upn
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? (The resisls.v.a (i2rpy ohh+q(84taqktiv q4.(a+or avs lhhtk(2.qiy8pity of copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diametespnv:sl3aejbq 00 i9 jkz9+y+r and 45 m long, if the resistinsa9vk:j0e+z0lby pi3+9 qjs vity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resistivity y t,vyx .0)u1. knv38p bxoai 1j*6xzdqmb)mq$1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper at,cnwc 4 pej(3fkz+i -td+ 7xwire (resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, measures: s)zkveek2) l 0.040 ohms. What is its resistivity?

  Calculate the current thdp9b q-.)(vloayec a .0-i gkjrough a 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 n9.(c)ko bpiyv-0jd.aa -lge qichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangmjs 0;gha2 :yv.+1c tprm6yr vular cross-section, 1.0 cm x 2.0 cm. Wha2.:0j tr+vmgmyahv 1s; p6ryct is the voltage drop 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 has a radius of 0.50 mm and a resistivita5(go1 zqoh:q y 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 (rgh d5s2bw:;tk eupxhaf 1(8m1esistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a r8r, -2egrgz x.ktz wm;esistance 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 v1:2yc8x+wx oqp;w/ aalj 1b7r-gec g 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 melting po stoq;8z,/2nl fc hlu/int of indium. The resistance ofqcsf/, 8nl2 ul/z;o th 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 throuewcl5pvm:e 6, gh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current dxfu: f:gl c)-will it draw?

  A 150-W light bulb running on 110 V draws how much c+c* +iwl4tld3gxmdd 8 w6tt9 current?

  What is the nominal resistance of a 100-W light bulb designed to be used in a t52 .-wuzkk tp2r cm(a120-V circr- a(w.m2 pczkk2 tut5uit?

  A toaster is rated 800 W at 120 V. What is the resistance of 0 :pxm e7d- xuob-ian9its heating elementn-be m97d -p0i:oaxxu?

  A 200-W resistor is rated 36j x ubatc.ab(ot73c7 ps)yfat $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rah0r5zmhob, at 9v2v:6sbz9j eted at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used tv* mlt0.u; rrat 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, what is itsy:2v7h wx,pl:o2jbox resistance?

  A 25-W soldering iron runs on 110 V. What is it q0 2/ve+cn1u zi b(j8omdhi.rs resistance?

  How much does it cost to operate a 25-5/aw2o f)j(1im ajtyu6q ju p1W soldering iron for 8.0 hours, if energy cos/6)q( i2fpwa1u aj tjy1u5ojm ts $0.08/kWh?

  How much energy does a 100-ikc4hb(kwz. u 1n9ks .W light bulb use in 8.0 hours?

  A 1500-W heater is coj9u+t4p uj(x(1(lzd f mt ael9nnected to a 120-V line for 2.0 hours. How much heat energy i9+xuzj(lu4lp (d jetf1mt9(as produced?

  A battery is rated at 12 V and 160 A-h. How much en(q)gm22jedaw)bh/o e 8d,my mergy does the battery store?eah m(j/2om ))edw,b2qm8yd g

  How much energy does a 25-W soldering iron usbzwd b;y mrpm za))b9 j*j,fpg27+jk ,e in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. qt8rkh 7k,eb oj .;:clAssuming the power company charges 10 cents for each kilowatt-houq:,kkjtclob r .e;8 7hr of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (cobzv1 a uz, 4i+ghz(5mo.6/+bdk qq doemputer plus monitor) is turned on 8.0 hours per day. If electricity dkgbm qv hizzud+.6/e za(q ,o+14bo5 costs 10 cents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the ,c7z mtl7fi(anq l,2/.ru 9v dvde 9wccost of running a central 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 ta2d7 d l v,,/c.vzlcr(nutw qem979i fhe monthly electric bill if electricity costs 8.0 cents per kWh?

  The heating element in an electric drier operates on 240 V and generat: ktctn;4 sst be+q,,wes heat at the rate of 2.1 kW. The heating element shorts out and, in repairing it, the owner shortens the Nichrosqs+;te cn b: w4,kt,tme 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 throuidjwzsp0( ( 0sgh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs9e.0f : st5mldlyt-ba $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 xv 43nzfvmztp2 e eh53+s(.wm60% efficiency. How much current d wnz3+4e vf(m.2 3zvt5xs emphoes 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 current fraduki b b,9g//sm0 *olows thro /*g,a9r/b0kbiud o msugh this device?

  A 500-W device is connected to a 120-V ac power source. ec7jbjeodxl6;x:)5-f kb 1nl What peak current flows through this devijxf e: j6)7 lxbn-1ldc5e;obkce?

  A 500-W device is connecbyg0-pr,rt dn) * xa5g pu-6brted to a 120-V ac power source. What is the peak voltage across this devi rrg 50r6x) p adbbnptg-,uy*-ce?

  The diameter of a copper wire is 0.0y*oso u-j4q:t/7xlg k 81 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 numu4 q*y:lg/7 -j tookxsber of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)