A device that produces electricity by transforming chemical energy into electz2 oh:vwz3y;mi/t3 swrical energy i yzmw iw2 h;3vs:z/3tos called a

  A car battery

  The total amount of charge that passes thua;:kr3nea4 hrough a wire's full cross section at any poin:u;a rk34anhe t per unit of time is referred to as

  The direction of conrlhay( j6l9dk mpixs +m0 9+yp k2b7/bvention current is taken to be the direction that

  A coulomb per second is the same a(rrmka q:0hfa:c siz(d 2/q c,s

  Car batteries are rated in "amp-hours." This is av x8s/8zt 8j osrrcv5g+j:mq+ measure of their

  The resistance of a wire is dk8tzk9.g9 .svw sbg7k 2-khieefined as

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

  The resistance of a wirax-hb f.m6 :uo4p jdv;95y nvfe/x9 ore is

  The resistivity of a wire de(d3);k:45us h2m2gn w:behid ,*liyg nlvr scpends on

  Which conducting material has the7.dngtvr ;*nw lowest resistivity value?

  Consider two copper wiresf3nc:o 1whw guztnfcj j8 :4*l +-k*ki. One has twice the length of the other. How do the resistivities of thes co*hn *glwifw-tj:+j f4 z3u :kc18kne two wires compare?

  Consider two copper wires. One has twice the leng7di j9 3tb z/qevt2(rgth of the other. How do the resis(i/ d 9g re3bj2qztt7vtances of these two wires compare?

  Consider two copper wires. One has twice the xlfux1u4*./zk d5qivr::dyc cross-sectional area of the other. How ukrddlx*zy5vxf . 1 i:cq/ u4:do the resistances of these two wires compare?

  Consider two copper wires. One has twice the length and twice the cross-secpw9d w48mbc1h)zdo0 ctional d)w4ch z0d 9bom8pcw1area of the other. How do the resistances of these two wires compare?

  The length of a wire is doubled and the radv/a8xeero h 5+ius is doubled. By what factor does thee8v+ar5eo /xh resistance change?

  How much more resistance does a 1.0 cm diameter.ypt2* o8o r y 73cxalwvopv2gt3.j1k rod have compared to a 2.0 cm diameter rod of the same length and made of the same mate j2tvp.l327* xgok3t8y1yracoow.pv rial?

  The resistivity of most common)hkb ib 5g+ga4i,1 lqs metals

  Negative temperature coefficients ofxbf4o+i5 co0 g0;ujit resistivity

  What is 1 W equivale45h4gu.zg6w v (2t u+wmlgieznt to?

  A kilowatt-hour is equek2klmtkqz 7sp3:4.vivalent to

  If the resistance in a constant voltage circuit is doubled, the ss,p4u s)64tyizdz 2dpower dissipated by ty4s,64zuiztds d)p2shat circuit will

  If the voltage across a circujyzx+44 6eobjit of constant resistance is doubled, the power dissipated by that circuey+46o4 zxbjjit will

  If the resistance in a circuit with constant current fl 9dlxb3b6/(,iipypzoowing is doubled, the power dissi(i/9 xo63pp,b i yzldbpated by that circuit will

  If the current flowing through a circuit of constant resistance is doub16i+r+qbw;di 8. ivwlm 8i oltled, the power dissipated by tha8m6l oi81+ ivtwiidq+;.lrwbt circuit will

  During a power demand, thp,8sm 7kjf s/f1hywej49 bu-oe voltage output is reduced by 5.0%. By what percentage is the power on a /,hj-kfuw4s8bmy71o9e p f jsresistor affected?

  A current that is sinusoi end*/rw h9lqcib,; b*dal with respect to time is referred to as

  Consider two copper wires each carrying a avx*:5hk xj,qcurrent of 3.0 A. One wire has twice the diameter of the other. The ratio of the drift veloa j,vk xxq*5:hcity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially ze 0*w4m6lw1nkjb z(l gzt.ou i7ro at very low temperatures are referred to u kwt6z.b7 4iz*lmn lg1j0o w(as

  What current is flowing if 0.67 C of charge pass a pointa;rse 0v+9lzlm.4he m 4 jfbf+ in 0.30 s?

  A charge of 12 C passes through an electroppyj 8t xcd-/.rlating apparatus in 2.0 min. What is the average c j/.tc px-y8rdurrent?

  How much charge must bme(rt3pb7:zi d 7p7p pass by a point 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 flowvp9 h ysep-i2 9jje 1y8bkf 3wkgk(c/9ing 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 for 10 mi+l3+5 ;i:(d2bj qhebwgvqkk en. What is the net number of electrons e52v: (wk+qible3dk ; h +jqgbthat have passed through the coffee maker?

  In an electroplating process, it is desired to deposit 40 mg of silver on a h d/t4+3dqg08pbf(z zh(fv7b p *p s;rh1dc ojmetal part by using a current of 2.0 A. How long must the current be allowed to run to deposit thi p f10( r4fh b;p(+ h3 sb7qvozz*cd8gd/dpjhts much silver? (The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference ibf96jongks(7 s required to cause 4.00 A to flow through a resistance of 33 o(sf6 n7k9bjg0 W?

  What is the voltage across a 5.0-W resistor if the current through it is 5.,uzmh axl c;t 5pah1o;cpw(z3ul6d:40 A?

  A 4000-W resistor is connectej c / 2w9ep*4: uy8/xvwbxmqsgd across 220 V. What current will flow?

  A light bulb operatif7 vx2j6 om(1fmun1k3x )batpng at 110 V draws 1.40 A of current. What is its resistance6ot) m(un173am p1k2b xvffjx ?

  A 12-V battery is connected to a 100-W resistor. How many electrons flow througk((mhk / (iyqxh the w(ky q /xm(ikh(ire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameyd3+nex6l(nh 3vay(r ter 0.40 inch? (The resistivity of copper dl 3a6n(erhy(3x +v nyis $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diameter and 45 mgrk 8uy,zy/ /l long, if the resistivkgyr/y8/u,z lity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wirpd8 h0pde:pxb fj02z, e (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 w i6(-j+njaum4axl jns3i e0/oire (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 0.040 ohms. What is its resistivity?uskn1 (j8 xrknn 1ne5r04:kps

  Calculate the current through a 10.0-m long 22 gaudf3 c e,j+se,cge (the radius is 0.321 mm) nichrome wire if if,sd ec+,jc3et is connected 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 long and of rectang-p6kdiziw o1o kgojz*: 5(u kmgl+)l;ular cross-section, 1.0 cm x 2.0 cm. What is the 5*6 l +z moizdog):(;1ow-ilg kjuk kpvoltage 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 rad aa/pz/4y:zjdf er (q1ius 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 t t(z:hf+)(/hgtq vtv:xcga 5(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 rek(arce;wq1,f s x.m+m sistance 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 resistivityf3w*v.(u7.s v7 0afzjggv)f xuy 8rwsy 5a/ xr 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 detero3wh)j6r(inx/vn s 93z;x hsfzhb2- tmine the melting point of indium. The resistance of the plaj6 hh-hz33b(vxztn s;f/r)xo 2sni9w tinum 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 thrdl f-xf:l6*brough an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. qs0 k +htgk40t nkmb9d;dyu6* What current will it draw?

  A 150-W light bulb running on 110 V draws how much cv q,jqvkd8 s5/9qoso aar9.;a,4h ydjurrent?

  What is the nominal residva*:3*kwa0 9p :w ecstf: nogstance of a 100-W light bulb designed to be used in a 120-V circuitow*kngwd*s30v f: aa9 pec t::?

  A toaster is rated 800 W at 120 V. What is the resist ywsv .q6full63cxv+z736ej aance of its heating element? ya.qu637l6 xj vwfvz3 +cs6el

  A 200-W resistor is rat/pwvh9g6tp; q ed at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rateddjgr:h 0(f /jj+ ya uelcfz);usfu4 3+ at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what cu+bk685vgv- 5uxq bd parrent does it draw?

  A lamp uses a 150-W bulb. Iz y- atqmo71s;f it is used at 120 V, what is its resistance?

  A 25-W soldering iron runsltaol p55 b)kkl uh /)0b7ya6j on 110 V. What is its resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0 hours, if enerc dd5 s)i*mrt-i9nv z5gy costs t dvizidsr-m c5n)5*9$0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0-.8utfyox n56m 3adhg hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How much hv-d8 zryv ua5.eat energy is pradv.z 8v-y5uroduced?

  A battery is rated at 12 V and 1vjn- sem:) pj is6lc5:buk0r 260 A-h. How much energy does the battery store?:-s5r v6cke:)bj02 inp smluj

  How much energy does a 25-W soldering iron use in 8.0 hours7z/+3rqtf;ksbj2 am9rnqen ,?

  A 100-W driveway light bulb ii7*vfdyu m) w,je6rw- s on 10 hours per day. Assuming the power company charges 10 cewem6iuf j rvy)-,w7d* nts for each kilowatt-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer 17rdysgla ufi4 ( c8o9oag2bl*mc(1e plus monitor) is turned on 8.0 hours per day. If electricity costs 10 cents per kWh, how much does it cost to run alae o489g(ris*7d l(cyfc2ug1m b o1 the computer annually?

  The monthly (30 days) electric bill included the cost of ru7qzml):9uyou h h (un+nning a central air-conditioning unit for 2.0 hr/day at 5000 W, and a series connection u+h 9muyu 7l:)onh(zq 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 b,gla)z4(xhiu f fu8 :d ,h0rngenerates 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 temxbh :h4a, ( idfnru08gul ),fzperature 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 t74g+-,kk ncppn sk*kthrough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs+8g 9kap *evvosbdt.2 $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. Howg3gy u.2iflxgds we*l :90uh5 much current does it draw fr 950ifgweguldh. u3: 2xgl*sy om a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What k*+uvx 26na ; o6eh j5q8hqgblrms current flows throuhb;n+aluv5q8ejxo qghk6 62 *gh this device?

  A 500-W device is connected to a 120-V ac power source. What peak 0rxnbzmu /hj844 (p kb2ec 6nlq 9nia4current flows through this device?8j huq b4r nc a044x9ki2(be6z nm/nlp

  A 500-W device is conne7yljnzlb) -whgf.5e 1cted to a 120-V ac power source. What is the peak voltage across this device g 5ew.l1bl)zfhy j-7n?

  The diameter of a copper wire is 0.081 inch. The maximum safe current u.jpvfbx / (c /p2h+svit can carry (in order to prevec us jvxhpp +.(/fb/v2nt 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 $8.5 \times 10^{22}$.)