A device that produces electricity by transform/ yjznyawn; .1ing chemical energy into electrical eneyw . j/n1;zyanrgy is called a

  A car battery

  The total amount of charge that n)oswg+2 -v7 fpr1tnvpasses through a wire's full cross section at any pow2ovn f- t)pgr+7nv1sint per unit of time is referred to as

  The direction of convention current is taken to cyfjoy:d77 i y.5n5i hbe the direction that

  A coulomb per second is the same asr;dy *pql-d4 tj qc;n-

  Car batteries are rated in "amp-hours." This is a me(i*8 h5hrntry( (dgi qasure of their

  The resistance of a wire is definedju+ a a7(q9wxp as

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

  The resistance of a wirev uw.,921wxj slr1iel 8aoga6 is

  The resistivity of a wire de(/qethrj z-mw3as6, d pends on

  Which conducting material has the ,*in+1vjo h)ssno6 w)g-ekvr lowest resistivity value?

  Consider two copper wires. One has twice the:z)fz*0zl/9u: fh r4h zkmvog length of the other. How do the resistivities of th)l0kh::9f4homzz ufrz/v * g zese two wires compare?

  Consider two copper wires. One has twice the length tj+ l7x.e)da sq(v wm80lqf q9of the other. How do the resista .q + dw0)e7lf(lqv9m sqtajx8nces of these two wires compare?

  Consider two copper wires. One5 b7::4hbkd9 0dyqm i fia;eef has twice the cross-sectional area of the other. How do the resistan0i dab4y7 efhi f9:kbqd;e5 :mces of these two wires compare?

  Consider two copper wires. One has twice the lengthr/ + y)cslss4v and twice the cross-sectional area of the other. 4)l/r+s ysvcs How do the resistances of these two wires compare?

  The length of a wire is doubled a9j: ejs0 ypxc-ue6ww 4nd the radius is doubled. By what factor does the rec wpweu:- jy0j6esx94sistance change?

  How much more resistance does a 1.0 cm diameter rod dr 7z8zhx np-.5ab2gip 8xzk9have compared to a 2.0 cm diameter rod of the samepnz2az8bhd7x i.rp 859 zkg x- length and made of the same material?

  The resistivity of mos* eou o)r.u . ce+vnf8tzxc;uq7 cg5)rt common metals

  Negative temperature coefficients of resistivit-,)l ygtee .0g(3 4a dy,mhyl7ne hmuwy

  What is 1 W equivalent pb8q95k q xmi6 wk( 7d1gsgjyz650vdppo p90jto?

  A kilowatt-hour is equiv2 rw4; j 5u3ywn1hqjiqalent to

  If the resistance in a constant voltage circuitfygu3j d tzq6 wp*x,(yq *tw7, is doubled, the power dissipated by that circuit zt d qt*,6wfyxq3, u*(g p7jwywill

  If the voltage across a circuit of constant resistance is doubl zg y:6mrp0wka)zjf9ri /dn3rsq,vsh421i y7ed, the power dissipated by r7/ a 30s94 wym6vz1 rzk2ih)ndiyrjf: s qg,pthat circuit will

  If the resistance in a circuit with l0*p8fxaa0, t)n qvelfcb;c2)ja6krconstant current flowing is doubled, the power dissipatev) acnla a068r*02) ;,t jfpqbcelfkxd by that circuit will

  If the current flowing through a circuit of constant resistance is doub,fy stpt*- ;u1kz tx,kwb5 *qyled, the popk;t ty-zbyfu5qw,t x,s1k** wer dissipated by that circuit will

  During a power demand, the voltage output is reduceo32y4g yy5m3 mfj2-s,9gox 91n ekam w n+ojrbd by 5.0%. By what percentage is the power on a resistor affected?ym 93sybfn+x9ej-m2wro o gn4g 3oj5,m1ak2 y

  A current that is sinusoidal with respect 1di:;v/wc uu0 k;yw orfcc e-2to time is referred to as

  Consider two copper wires each carrying a current of 3.0 A. One wire hawj(f4 hm,xuyy c257cl s twice the diameter of the other. The ratio of the drift7lc52hycyu (xj4 w,f m velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially zero at: 2u 5afdl gr*z5dvr,i very low temperatures are ddfgi5a2rl *,u : rz5vreferred to as

  What current is flowing if 0.67 C of charge pass676mmichztpy 954qx tz6r x:f a point in 0.30 s?

  A charge of 12 C passes through ank9)3acx 7 bjrw electroplating apparatus in 2.0 min. What is the aver9 xbka3jc7)w rage current?

  How much charge must pass by a point in 10 s o yi;a,gzkhkfy6;r gc ,e,; v,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 iba ogiyzhp 4 +.y12w*lf $4.0 \times 10^{16} \; electrons$ 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 drawx)83q jm4u scsm7xew8aj3i i g(sl-u9 s 13.5 A of current, has been left on for 10 min. What is the net number of electrons that have passed through the coffee mamu7u-w s38)ej8(a q ic 39lgjms4sxxiker?

  In an electroplating process, f23c7y j )w cdw2czw:fk2.x qdit is desired to deposit 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 this much silver? (The silver ions are singly charged2.xwd) : wf fky 2ccdqcw73zj2, and the atomic weight of silver is 108.)

  What potential difference is required to cause 4.00 A to flow t+or8 .wu;bhf5 1+9jgr4l f q4ue mkrzohrough a resistance okr18;egrqrjm +wfb9ulz4o+ 5.u4 fho f 330 W?

  What is the voltage across a 5.0-W resistor if /,g( c oe-itvb40tri;uk)qk c the current through it is 5.0 A?

  A 4000-W resistor is cohe1 :k2id pp(tra 6;rznnected across 220 V. What current will flow?

  A light bulb operating at 110 V draws 1.40 A of current. What is its resistawu97va7wj*hf:o i v-mnce?-o7m vi fauww9:jv *7h

  A 12-V battery is connected to a 100-W resimr3nbpr z: g l:za7a*idp9ie 0p.q42 ustor. How many electrons flow through the wire nlqm3:*e4r7 p0i d.:arbzzpiapg u2 9 in
1.0 min?

  What is the resistance of tl9c aovcgx23 4/ -(uzh avy+u1.0 m copper wire of diameter 0.40 inch? (The resistivity of cop(4hyax+2u-cvug cv3o 9t/ zalper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diamez *-( aorxci,ater and 45 m long, if the res(*rac oa zix,-istivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wir :)sznnd8ho t5ica-:v 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 wirejl)mr kl:r ,n4lla,4n f8w/1btv )vio (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, m83/yls1w7 p0jp ec sfneasures 0.040 ohms. What is its resistivity?

  Calculate the current thr- t.b*l jlz (roqbn,wtg, 8gp.ough 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 ni* g( n.wrjb p8qbtl.,z -tg,olchrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long qprmo d; 7w:xj x2pc(6gw ,fi1and of rectangular cross-section, 1.0 cm x 2.0 cm. Wi pwd;p:1x x(rf,2o wmcgqj 67hat 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 z r).,xp6wwpp,j wq nf)xen;(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 (rea co-zsplf3 1ftz pcztmv- ;f4(18/i asistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor hasuj9g; nuslbu 2;yn(,aqk4ln( 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 coefficibfpuy r.*i/ uc584mk bent 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 me e/:mpkbqf4cg-r7w,w lting point of indium. The resistance ofm rw7:4fk qwgbe c/p,- 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 through 3*ov44gnql uqan $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. Whatb7b b2ulf5 w08 qzm2m rxv/te- current will it draw?

  A 150-W light bulb running on 110 V 1os j9 o 3te0pnc;n4y/;nxicmyf;p ,t draws how much current?

  What is the nominal resistance of a 100-W light bulb designed to be ;pj,o 6v vv(hcz0.,c:vve ocrused in a 120o hovz:p(cvec j;v 6, vcr0.v,-V circuit?

  A toaster is rated 8y te6dg td c22 y4b,y22hetys300 W at 120 V. What is the resistance of its heating elemeny2t2 46b2sce 3tt2, ddyyy hget?

  A 200-W resistor is rated atmqmgze,lb8203oe9p w $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is ra0gyq(c zo57/ km,emvoted at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what c:+qq4 mg b;7aia6fuzcurrent does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, what is its resist1cp,3y)gnbk e6lko,f ance?

  A 25-W soldering iron runs on 110 V. What zwakw,+nb /c(/uffw6 is its resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0 7 u);nqvi89lvys b r*(+a9 uofh5obkehours, if energy cr(of * l yhabke9iq;u)bov57svu n 8+9osts $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 hoqryu 1l,4tb t9urs?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How much heat 3+-pu, tmzzurkl/)kx energy is produced+ zltxu,rkkpu -z /m3)?

  A battery is rated at 12 V and 160 A-h. How much energy does6 ctbybv 10 p::vqva2u the battery store?atbvv:2 p qvcu0y1:6 b

  How much energy does a 25-W soldering iron use ii l)::fw7hy kpepks0 8/ y:ti1p4wtpan 8.0 hours?

  A 100-W driveway light bulb 0( rci* efe)cais on 10 hours per day. Assuming the power company charges 10 cents for each kilowatae 0)r(c ceif*t-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (comput55h7g/ htsb ,ozg+ cdder plus monitor) is turned on 8.0 hours per day. If electricity costs 10 cents per kWh, how much does it cost to run7ht+s ,dcozg dgb5h5/ the computer annually?

  The monthly (30 days) electric bill included the cost of running a centraleh5 q 5/z6vcanbxayhp8c*,c/ 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 th ,ca5xb 6pavqncyhh58 z c/*/ee monthly electric bill if electricity costs 8.0 cents per kWh?

  The heating element in an )f 5 2iczvn4/d o afxfji/0lq7bhk93 xelectric drier operates on 240 V and generates heat at the rate of 2.1 kW. The heating element shorts out 0f)f7dq5/jx vl nbkzc9aix24i3 f/o h 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 flowprf:c od6lqh86c /, lxs through $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costsvekvzxj + 1xbj2(z 1ltz,(nf 9 $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 an a:f 99cgiot30y33x7ilbd ehp has 60% efficiency. How much curre :e97agb3fo 3itan 03 y9cxdilnt 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.a8c;al;kf5d-bha w8 9k -dda 1vz xs.c What rms current flows thxa;z ; s8wc-c9kl 5 b1-av.addfahd8 krough this device?

  A 500-W device is connected to a 120-Viwoe . ((lhjm8 ac power source. What peak current flows throughwi m8 ol(h.j(e this device?

  A 500-W device is connected to a 120-V ac power source. Whpd pop(rq+e,azy8 19 jat is the peak voltage ac+e(p,a qj1y odz9p8rpross this device?

  The diameter of a copper wire is 0.081 inch. The maximum safe cufah +);zv hfbf;hk7(63nxik w rrent it can carry (in order to prevent fire dangerkf(kf h;3vw7;6 x)n+hhifb za 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 $8.5 \times 10^{22}$.)