A device that produces electricity by transforminh2azuws rhcan97 t*- sl ztjb6;tu 6(7g chemical energy into electricals6tujscz ;r9hz h7ba672a-l tu(tw*n energy is called a

  A car battery

  The total amount of charge that passes4d nvr7usk hsjd.m :z.*3vm7j 3l2twv through a wire's full cross section at any point per unit of time is refe.: uw*dz vj. vnm3sv 7 kjm7hldr4t3s2rred to as

  The direction of convention current is taken tc1*mzvr2m5kygs z m4 m6f2;glo be the direction that

  A coulomb per second is the sam bi uay6z6)5rocbt3t, e as

  Car batteries are rated in "amp-hours." This is a gea1g f.u8yr orv6g.yul+q2 t.ou88rmeasure of their

  The resistance of a wire is defip/ elh m6-:ake7m byloy 2i1 l892qyxdned as

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

  The resistance of a t0g3gx9-jqx+ j g-em hff1sy )ki4fa,wire is

  The resistivity of a wir1phclyyk;k- 7hx,z4uz +wvfa hyl54 8e depends on

  Which conducting material haay- yo8n1+wtfd l., a gc;j+evs the lowest resistivity value?

  Consider two copper wires. One has twice the lgx0tigwk;zudbu.m;: f2bk;bc2w , *cength of the other. How do the resistivities of these two wires comb;i,2cw ;wfk;dbu: b *k 0.xtc muzgg2pare?

  Consider two copper wires. One has twice the length of the othe7nw mg/n*n35 s oud8evsc3w g.g9:lib r. How do the resistances of these two wires comparese8./w7mdg ni ulv3n3w nsog:5b *9c g?

  Consider two copper wires. One has twice the cro8j3xi,. /numv(7yqaw+ffy x bmm8 9mz ss-sectional area of the other. How do the resistances v/z3( bmf,jy8x8+ xqmunay mimwf .7 9of these two wires compare?

  Consider two copper wires. One has twice the length and twi1i)a;1tiws9fag kcm /jhh3c u q9(4upce the cross-sectional area of the other. How do the resistance1mc 39j)p si9uk(h;c1wth4fq aga/i u s of these two wires compare?

  The length of a wire is doubled and the radius isutq 7b caugj,63l7v /z doubled. By what factor does the resistan,vg7b tju/ 3q7a6uczlce change?

  How much more resistance does a 1.0 cm diameter rod have compared to a 2.0 cmfry oypdqx 034p3 )z,u diameter rod of the same length and made of oypr x3zp40yq,)f3d uthe same material?

  The resistivity of most common met)-f vjds6 5owz)tlr7lqs3 7 owals

  Negative temperature coefficients /b v /g tqe7q2kjg3h 1g(+:f woaugyts4zx6y;of resistivity

  What is 1 W equivalent t1o0e9r6h6 2a oe kolqmoo (2wro?

  A kilowatt-hour is equ6c.1enll0v2xhxf zu6 c19w 3el6swrvivalent to

  If the resistance in a constant voltage circuit is doubled, tb/5p x w(ar6lutlb *y3vf0u:ghe power dissipated by t3u6t:l *xy0agrbl pbv u(wf 5/hat circuit will

  If the voltage across a circuit of constant re aj31e yc31j:d4;ah6u yn7+eb yyequdsistance is doubled, the power dissipated by that circuuyyd:y1d;ajhj1ba e7 e36 3n4c eyq+uit will

  If the resistance in a circuit with consc(i e+vzujd+h.q 4 7*)wnf0tj: 9c: jjlrzowktant current flowing is doubled, the power dissipated by thv0 l:zdwjj4hn9.*qzew+ :c )jkc (fojru +7itat circuit will

  If the current flowing through a circuit of constant resistance is doubled7 huspw4hb tn0o+my)) ukk )9f, the power dissipated by th9o470uf )ukpmnt h +y)swb)khat circuit will

  During a power demand, the voltaya 6h2o l7fc0cge output is reduced by 5.0%. By what percentage is the power on a resistor affected?6ccahy0 2o7f l

  A current that is sinusoidal with respectrqwc32ghp hs(y)if9p9f ik-5 to time is referred to as

  Consider two copper wires each carrying a current of 3.0 A. One wire hab:g/efeuh/e +3 q pl(es twice the diameter of the other. The rat+e gb /le(uphe/3q:e fio of the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity bec :0 rgp4z,-jzlpvi )-yt)dcafomes essentially zero at very low temperatures are referred to as 4)z,)rta-p- d:izy gjvpfl0c

  What current is flowing if 0.67 C of chc, /8y+4j zrm4ozwhdn arge pass a point in 0.30 s?

  A charge of 12 C passei5w8ao t:y4ey /u8zols through an electroplating apparatus in 2.0 min. What is the avera liyo5z ayue/4t:8ow 8ge current?

  How much charge must pass by a point in lb1n0q2m x+kt10 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 w 0xw;,bs+l.cl2fvcv 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 min. c3 )k9zbk1qckogvw7 2 What is tho7kzkb 9kq g31cwc2v)e net number of electrons that have passed through the coffee maker?

  In an electroplating process, it is desired to depost z:wzmj45e lsd)x2a6it 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 depod: )ezj 6as4t5 wl2xzmsit this much silver? (The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference is required to cause f7z90a /:o 93 k6nwna7gewh h+ tqeufm4.00 A to flow through a resistance of 3wufmw z9o7e/3+6 hnkge9aq :70 fhtan30 W?

  What is the voltage across a 5m n6bzo4 1q0mjc vw,g,.0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is connected 4 0f92fxw9o 1tc50gkxl k j8ttbbmvw1across 220 V. What current will flow?

  A light bulb operating ; 9tx9.w sm ,7vpceijcat 110 V draws 1.40 A of current. What is its resistance?;xw 9 ic7ce.,mvp9ts j

  A 12-V battery is connected to a 100-W resistor. How many electrons flow throu8 opz9h0kxf7 xgh the wi98p07kxxfz o hre in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameterig(c wv18y ug yz.0ta+3nf8ec 0.40 inch? (The resistivity of cop v(w0efc n8.y+8i1z3agc yt guper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 unjhe7w5 9-;n)xcz: m 6 vuf wop(yri,cm in diameter and 45 m long, if the(wue9 hpjovi u,6 )wx5:c-n7 ;ymzf nr resistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resistipvv y6zirc/wgc,*f g k:1 c73rvity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistivit6*3-w2jy u z fo8covoxy $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, qk-b4a ed i0t,4.0 m long, measures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius is 0.321 mmrt)mx a.j k9k9) nichrome wire if it is connected to a 12.0-V battery. (The re)9x.a kt j9mkrsistivity 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 t.mi6(q8qd 2bmk mlh rsjfb5d5l)+e8x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (The db rbim+md 56llk. fsqht58 m8j)(e2qresistivity 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 resisti8:sxz)c brfa)z5 s5 ox5 oro8gvity 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 (wm7 pcy/m m) f9vemk17resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resis42ju n4+3uxof.hc2xh vp h/zqc x+7cwtance 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 coeffi z5j) sf(usns2duxxp.g .9j)mcient of 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 point of indium. Tv064fdloen+o*b2mbaa5 ;ti uhe resistance of th;oaub 6n oma4e0l* +bf52tidv e 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 through an-ded4slz0vr8bk0d1 r.p zz, x $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What cupdue uvk 8wy6my:xdz: f)3,6z rrent will it draw?

  A 150-W light bulb running on 110 V draws how(.uns/6i8/tg; si +oe 3fqanq 2x mtvz much current?

  What is the nominal resistance of a 100-W light bulb designed todm:gk87wydzxo 8/oud 7y5 oe ) be used in a 120-V circui7/kdyue7 mo588)o z wo dxg:ydt?

  A toaster is rated 800 W 2a *qr 3qfnzpaq 5s/ qf20/sjeat 120 V. What is the resistance of its heating elemena 0q*fq2q p2as/ zjf/ snreq53t?

  A 200-W resistor is rated orobgm0g10 2 mf4l:xlit u)oxva65 t0at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is ratot uhd.w2l8s c8ii i71ed at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used a-)+owg3bbz3b h99v0ey6le8n aupk y pt 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 pm.)hqs4de7sfrpv ny*w3lep)e- ) m) V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What is its aakp1 +8;;l-cl rtbyw resistance?

  How much does it cost to operate a ta6,h,kp/ n ;ejq p8j -p8gbl;q*ksyt 25-W soldering iron for 8.0 hours, if energy njabl;pgtt; kph sp y*q8/q-8k,j, e 6costs $0.08/kWh?

  How much energy does a 1)+9rxcvp+ pwe7 yi6c2p gpj4:;me *s0tkjwht00-W light bulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V liner r.fbp46; uid for 2.0 hours. How much heat energy is proirp r4;6.dfu bduced?

  A battery is rated at 12 V and 1b );)w: kpova 7uzf7gag-k su460 A-h. How much energy does the battery store?uz-v)s4a 7 bpgfo : 7g)ukkaw;

  How much energy does a 25-W soldering iron uqafj1y+ aw,)sc+ 1mzs8h *wzp se in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours pe bu)yuup+6t0ayl q+5q h/ 4ixv.(hjc zr day. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost tv 4i6t)a quup 5yyh ./xbjqu+z+hl0(co operate the bulb.

  A 400-W computer (computer plus monitor) is turned on8exqm*j;gt 5 v:p0ol vbkm0f6 8.0 hours per day. If electricity costs 10 cents per kWh, how much does it cost to run the computjmpqeg* xf06mbo5l 0 vt8k;v:er annually?

  The monthly (30 days) electric bill included th0 8gdhs 3q-xpi3ap j/yfdn3 0me cost of running a central air-conditioning unit for 2.0 hr/day at 5000 W, and a series connecdmpph3/i3fx j8gqa sy0 0n- d3tion 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 ,va ( r-d8w(9ixdfum -motg:qoperates on 240 V and generates heat at the rate of 2.1 kW. The heating element shorwtioam r9d m(x 8,u- vdq:g(-fts 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 flowb 3ugvpqa *zsvdj1utj.:t5 27 s through $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs sv n,6:2jcnxcx6e/m b $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 th :j+oahdx+(au ggvjs . zr,8d,6 kebn0e rate of 2.0 hp has 60% efficiency. How much current does it draw fro6exj.k guhd+b8r(n gjo+az,vda0 :,s m a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to i1 xaczrc(rmi)/b, /wkto w 9:a 120-V ac power source. What rms current flows through :w(ikmr 9 , /cbixa cwtrz)o/1this device?

  A 500-W device is connected to a 1205zl.lgoao j +--V ac power source. What peak current flows through this devicazo j.5l+o-g le?

  A 500-W device is connected to a 120-V ac power source. What i:n )us jca yzj1bwy(5(s the peak voltage acjn(bwycj u1(zsy:5 )a ross this device?

  The diameter of a copper -52tywly swu:yag6o/m 9x-la t t2u.awire is 0.081 inch. The maximum safe current it can carry (in order to prevent fire danger in building constru9yxmoyw.2uy l62-aa t a-tt: 5lgswu/ction) 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 $8.5 \times 10^{22}$.)