A device that produces electricity by transforming chemical energy into ele wsvpa8 lsjn13w;c: /pctrical energy j3;wpvw1/ 8als n csp:is called a

  A car battery

  The total amount of charge that passes through a wire's full cr*6kk4gpumt5 v oss section at any point per unit of time is referred to *vtk gum 564pkas

  The direction of convention current is .*w 9 ib6o thl:mbg85y- ye,/czqykritaken to be the direction that

  A coulomb per second i kfrky0 +kn5:rs the same as

  Car batteries are rated in "amp-hours.o1amu6b xkmqd*+2- h i" This is a measure of their

  The resistance of a wire is defined dmbstg*5n g k*9 .9q5ko3vljn as

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

  The resistance of a wirxdrbja+5.n) o e is

  The resistivity of a wire depends ./z nx bze.-toon

  Which conducting material hasbm 7)ep4sy6(z g xa)0utz2vlj the lowest resistivity value?

  Consider two copper wires. One has twice the lenot 2nvm3. xi*qgth of the other. How do the resistivities of thxmi23oq * ntv.ese two wires compare?

  Consider two copper wires. One has twice the length of the other. Hbq:- b sqd9/,)3rq;u ex xyzsgow do the resistances of thq xq- q3dy)9ze;:/brsb , ugxsese two wires compare?

  Consider two copper wires. One has twice the cross-sectional area of 7 *t1.6vsxhmobh s.lathe other. How do the resistances of these two whxas.1 hsm t7ob6v*l .ires compare?

  Consider two copper wires. One has ; gf f;wio hm+ti,o/gno z24n6twice the length and twice the cross-sectional area of the other. How d/fo;,iw +mg624 ogz;fitn onho the resistances of these two wires compare?

  The length of a wire is doubled and thei/uxc bq. wf).pbsj:: radius is doubled. By what factor does the resisticbxfpj .b: ./s qwu:)ance change?

  How much more resistance does a 1.0 cm diameter 03(ro: 7 onwoluzdus(h:,qb4ny d 9 ul0g5ajfrod have compared to a 2.0 cm diameter rod of the same length and made g:ul:wnu9b o nfr00q4, ( azdyso(d3o 7jh lu5of the same material?

  The resistivity of most co4ylqqg)bp s h 3e(,s-hmmon metals

  Negative temperature coefficients of rea +xsj8/c, alue p0lp;sistivity

  What is 1 W equivalent to-lqu7 g7ncq t83y 0xm4g iq2ylj1b *zf?

  A kilowatt-hour is equiva09p q1/ qcjlhglent to

  If the resistance in a constant huwhb-m ;3 ;ldvoltage circuit is doubled, the power dissipated by that cirl;m- bdwh; u3hcuit will

  If the voltage across a circuit of constant resistance is doubled, the pkpd19 . gn,btxower dissipated by that x9npb . dtg,k1circuit will

  If the resistance in a circuit with constant current flowing is doubxzo()uba sr;wf e+,8cled, the power drfsza8ob x;,cu+)ew (issipated by that circuit will

  If the current flowing through a circuit of constant resist05dmr eol-s(pance is doubled, the power dissipated by that cirpml0 d e(os5-rcuit will

  During a power demand, the voltage output is reduc3evpd:q a7 l6jed by 5.0%. By what percentage is the power on a resistor afdl :jvpe36a7 qfected?

  A current that is sinusoidal with res5jjd /c)t *7ju vihj*ppect to time is referred to as

  Consider two copper wires each carry7e) ,v72ns+ bgs thsrming a current of 3.0 A. One wire has twice the diameter of the other. The ratio of the drift velocity tvrhs7m2 )b ssg+n7e,in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity hr53 znb wl;hc d1g1j5becomes essentially zero at very low temperatures are referred to 5rc1j zhw h13 l;5dbngas

  What current is flowing if 0.67 C of charg+7n8f ,t/q,zw4pc(sxdp8kg k l yuwd0e pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating apparatus in 2.0 min. d n -s)v)hhsqt0 mw.5mru u.q,What is mr-t .)vwh 0snhu)s5qd,.mq uthe average current?

  How much charge must pass by a point in 10 s for the current toh5la2d ++o nq0( xnc yfnr76ma 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 flowi ske 4mhgva6..ng 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 1/44 + gvepojl9 vqy6ax0 min. What is the net numbelvx4qe 9 j/4opgvy+6ar of electrons that have passed through the coffee maker?

  In an electroplating process, it is desired to deposi-rsgv f )ombu-z9dy(7zn3 .*p ph7 iudt 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 deposit tiu*f)9p s y gdz-o(p7uzhb r7d v.nm3-his 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 through a resi3 : h)snfz.e1ybfqrt+stance of 3f3nbftzr yqh:s1.e+)30 W?

  What is the voltage across a 5.0-W resis+ 4 tvcf6 4:sytros1dctor if the current through it is 5.0 A?

  A 4000-W resistor is connected),esnviuu- ,o across 220 V. What current will flow?

  A light bulb operating at 110 V draws 1.40 A o4ny:*p6 ml bk2k cset11jcr*gf current. What is its resistance116c rkmscgenb2*p j:k* 4 ytl?

  A 12-V battery is connected to a 100-W resistow vx1ul56b1qi ,gs9r or. How many electrons flow through thegq9so,biw r1 u6vx51l wire in
1.0 min?

  What is the resistance of 1.00rtyehk spsb4), l;3d e aq9,f m copper wire of diameter 0.40 inch? (The resistiviy,sfltps90e,reqa bk h4d;) 3ty of copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circula.+yvr5huylk w6)n i 8er rod 1.0 cm in diameter and 45 m long, if the resistivity ii +kl)hnvy6.5we8u yr s $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resistivity jg5 wvu,3oz7;i wilk- $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resisti/rp 29b-2pzm b2hx jelvity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 ic8d j2j1nk0xb s its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radi5*nwwt c+(:cm 3g0qbrq i+nrpus is 0.321 mm) nichrome wire if it is connected to a 12.0-Vmqwctw* (n gbp0+q+5ir3 cr:n battery. (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 xph4flc f,.j* /a a:nhl:3 zchx 2.0 cm. What is the voltage drop along its p4 3,* hhcnlah:jzx f al:.cf/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 vbl ai (r222ygwhe71sius 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 (resahtxmjalz+gh 8szi65+mo (fd- 4za(l m;+c3 sistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has l+ iq.8 )ji/ zrmm tgynnwg4*;a 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 of resistivjg89mo-4u8yc;j2a f k bodv;kity 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 usedl5x0+ dw:3ji)wjojmw1z me, p to determine the melting point of indium. The resistance of the platinum wi)jw 5w meixo w1j:lp j0,z3+mdre 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 througuox) r62iy : 1g*jfee,t( gcndh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current will ik*w7nb-h hjj*t draw?

  A 150-W light bulb running on 110 V draws how much7m2uj70/zx0i vhajzy-p axf ; current?

  What is the nominal 1d(7 /e 7jwwurps irp*resistance of a 100-W light bulb designed to be used in a 120-V 7r(wj rw1e*pids7u/p circuit?

  A toaster is rated 800 W at 120 V. Whp, v jx nqic 4y-c)5rf5d:nq-cat is the resistance of its heating element?-)xrcpvqcynq5 d45ji -:cf, n

  A 200-W resistor is rated at w (9/7ybg.g.j y,zu0o:inep fd. vxyq$1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated at kdxisn74 jbi/wt:i*v . +(byx $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. /vt nw( z5uiur4e3.w e If it is used at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used atf4 uc :0mdlo:7 zyv/kl 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What ivlze 7e8(7kz5 wvj*fp s its resistance?

  How much does it cost to operapuww9kgytv7rd4: h6 hs 3f7q-te a 25-W soldering iron for 8.0 hours, if energy costp hk6y9:- shg7 3v47fwwqrduts $0.08/kWh?

  How much energy does a 100-W light bulb us ;:czs(7e)hpsb zzfb 6e in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0u5ggm0ou c--i qb 2ay) hours. How much heat energy is y b)5u0om -a 2c-iqgguproduced?

  A battery is rated at 12 V and 160 A-h. How much energy does the batteob.zl (vyd a p;5mkp;:ry store?v;y k(z;am.5:ppod l b

  How much energy does a 25-W.*lwe,ef q1 is soldering iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming the p 0dz7s yawxu-qh8ct- 4ower company charges 10 cents for each kilowatt-hh70da wzq-csu8x-y t4 our of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monzbsubtrd1p 30gx .tp b 21+, ot5y.lrpitor) is turned on 8.0 hours per day. If electricity costs 10 cents per kWh, how much does it cost to 31 ,.5bbysrplzg xo.t0uprp2 tb t+d1run the computer annually?

  The monthly (30 days) electric bill included the cost of runni 8-1cqyb4iofg ng a central air-conditioning unit for 2.0 hr/day at 5000 W, and a series connection of ten 6 -bfy41c8g iqo0 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 drkwzwn 6 9kbx1*ier operates on 240 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 temperature.)b 9xkw6nk*1zw What effect will the repair have on the power dissipated in the heating element?

  14 A of current flows throughlscu f)9 )gnm- $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs 7u(u2j4j le zc$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 +(;z frg)f h klpa,8pfhp has 60% efficiency. How much current does fgpfr8 lpa(h)+zkf;,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 qy, vh/d61us*c,ry mbflows through this bsh y,ym udcv*,1/ qr6device?

  A 500-W device is connected to 2qy91 dna.+wf afu- lua 120-V ac power source. What peak current flows throuw f+2fqa- yuandu9.1l gh this device?

  A 500-W device is connect ,erhx:di5921qwcj xo ed to a 120-V ac power source. What is the peak voltage acxc59 1,iwr2oqjdx :heross this device?

  The diameter of a copper wire is 0.08xj:lon2 z1h+(rgop;9 bpq m n71 inch. The maximum safe current it can carry (in order to prevent fire danger in building constructinj oxq 1mr ppob9+g72(:n lh;zon) 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 $8.5 \times 10^{22}$.)