A device that produces gr6 dur6c lyy(+x)n-melectricity by transforming chemical energy into electrical energy is calledyu+r-ycr mln6(g )x6d a

  A car battery

  The total amount of charge that passes tsahkdu:n3, ph7v3g *ehrough a wire's full cross section at any point per unit os7v,p*g3:de hkanuh 3 f time is referred to as

  The direction of conveexk+e-1u8+cjj j0v j j.bioj (ntion current is taken to be the direction that

  A coulomb per second is the sa0fhzo3qx wb 7o8n; ;npme as

  Car batteries are rated ins1g*uyzi6z3;5 fdqdmy 8k pt, "amp-hours." This is a measure of their

  The resistance of a :ut .3rz: d a,tbzv7akwire is defined as

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

  The resistance of a w -r+-bbd)qly xqi-y6cgb c8:mire is

  The resistivity of a i4f *j:l)r as2v6 n5rm2wzaskwire depends on

  Which conducting material w/z8x ceb0,ij5la e,k/qk) ye 5sgth0has the lowest resistivity value?

  Consider two copper wires. Onpltv hrdp-0213qm ne/e has twice the length of the other. How do the resistivities of thestn30v p l/d2 her1pmq-e two wires compare?

  Consider two copper wires. One has twice ;s u8r,b5rl9zct nqj 6the length of the other. How do the resistances of these two w5r9jntur;8,bl qzs6c ires compare?

  Consider two copper wires. One has twice q5glug7sp *r+i+8b og the cross-sectional area of the other. How do the resistances of th+p lb7g5 *gri+8oguqsese two wires compare?

  Consider two copper wires. One has twice the length and twice tqpe*+z.i tiv qm a;r- cla+3u6he cross-sectional area of the otherc m3qr; a*t .pz q+6li+v-ueai. How do the resistances of these two wires compare?

  The length of a wire is double 8f:raey4v c)bd and the radius is doubled. By what factor does the resis:fyea8 brv4)c tance change?

  How much more resistance does a 1.0 cm diameter rod have compakzxyd21(jh j1dpg ( +;.vgl asred to a 2.0 cm diameter rod of the sa jlpdh2;y+x1(ad1sj v (zk gg.me length and made of the same material?

  The resistivity of most common metalsvetzp:6fs/be -g v;4w

  Negative temperature coefficients of resismul)7 asst )5lmg7m n0tivity

  What is 1 W equivalentz+a7ns bo)0 t38 * asuizaey5n to?

  A kilowatt-hour is equztu6 tcff,,js4s 1(he3 o-evwbl(ft7ivalent to

  If the resistance in a constant voltage circ r)sbnwk6f+z* yu18uruit is doubled, the power dissipated by that circu) b*r1sukyf wnr6+8zuit will

  If the voltage across a circuit of constant resistm.g0v9 kf(ev,ukdoj 9ance is doubled, the power dissipated by that c0vku.jgmk d(feo9 v,9 ircuit will

  If the resistance in a cir :7ga,x7ho cmscuit with constant current flowing is doubled, the power dissipateda:xco g, 7h7sm by that circuit will

  If the current flowing through a circuit *qdt (l6ii(nodcnw4(of constant resistance is doubled, the d(qn d (ton(6*wcl 4iipower dissipated by that circuit will

  During a power demand, the lrw,8*lqlr y)voltage output is reduced by 5.0%. By what percentage is the powe ,q8rrly*wl) lr on a resistor affected?

  A current that is sinusoidal with respect to time is referredfq) zdx(eq37kv q.5oq to as

  Consider two copper wires each carrying a current of 3.0 A.0gg7+ da kq**nuevpgks sv +e icu5 g4b0*w8i7 One wire has twice the diameter of the other. The ratio of the drift velocity in 7 vaqe*kuc0 0vd+8gsb +*g gke*nugi pi5w47s the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially zero at very low t * gftpac4tg l-i,g9w(emperatures arp*tcgwg -iga4 f,l9(t e referred to as

  What current is flowing if 0.67 C of charge pad4ibqe;tpju+z 5;t xz*i b0 8mss a point in 0.30 s?

  A charge of 12 C passes through an electroplating apparatus in 2.0 mk,9;mc1valw, li8 a ujin. What is the average cur ;cv8 ,uai9,a jlw1lmkrent?

  How much charge must pass by a point in 10 s for the current tou gps2e spdn:/; a.jk- s7ndh) 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 5 g 1luulkdw:+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 cdps+ hb th/rwu531q1f urrent, has been left on for 10 min. What is the net number of electrons that have passed through p+tdqr uwhh 1/s35b1fthe coffee maker?

  In an electroplating process, it is desired to depos4d ;dqrjgr(k.8 fm. .wmzli,s1m7blmit 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 charged, and the atomic weightdmqlfm. mbrkd7 w, gjr.1l;i 4(smz .8 of silver is 108.)

  What potential difference is required to cause 4.00 A to flowm p;56j pkrvl4mcho 72 through a resistance of r24vpk 7clj hommp65;330 W?

  What is the voltage across a 5.0-W resis7cn -.c i3bls77dhd3kxu/hhq(jxa8 ptor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What current will flow?q3e6 z-6 -gf*zy eubit

  A light bulb operating at 110 V draws 1.40 A of current. What j0j3 j:zuqp o hwie3cj2/m 0p9is its resistance?iup9c/ zj2owjepm h3 3j00qj:

  A 12-V battery is connected to a 100-W resistor. How many electronsf4x )g5sgkok -pbt9:f flow through the wi)bx:4sg5g fkk9fp to- re in
1.0 min?

  What is the resistanchf1gbk5pzy w 4x1l;ra- /iv a)e of 1.0 m copper wire of diameter 0.40 inch? (The resistivity of copper isgip4lay 1/;1kxf)zwh vb-5 a r $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diameter and 45 m long, if th f6 vo.s1j uux6sy+5wucvk.pai;f-ckrp( 0,x e resx5y.ksj;0 -cu6 vaf( k+,.px6 siruc 1povf uwistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resigdr2:w* zlrf : vfhvww4 -:wl:stivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resirz l :1,wkz;qgstivity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 re2ie-qx2kz/b; we/y .huebg4kmft ;;usistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius is 0.321 mm) n fd519v9un, x:d cf . wdzamm anphe/6efw/.b0ichrome wire if it is connected to a 12.0-V b9xebna z./ e5,aw 1 cnuff dvpmhddfm/90:6. wattery. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangu0.jy hsnn p( n8bzu8-hlar cross-section, 1.0 cm x 2.0 cm. What i0pynnhb.zus h-j8 n( 8s 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 mmm* 3 s+ion4scc 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 (resisti.y wte ;xb.e5mw hsn14vity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resistance of ,w(*kp kd qf,idrxoy36ymceb, q 19x1 $18 \Omega$ 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 coeffici bsbrjfk7 -lw f;j86v;ent 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 usetgdi:c0 wod)ag kd3 9da e4v46d to determine the melting point of indium. The resistance of t 346e)cokgw g4dddia9 v:dt0 ahe 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 thr6c4y9cx(u b/ue obav0 ough an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What currenk8+xbpxg+32 , q nrmgwt will it draw?

  A 150-W light bulb running on 110 V draws how much currxhmur/4z sh ;n w.mc;a5 u(y;dent?

  What is the nominal resistance of a 100- gzcn)j .qbh2xecbrr+b r j6x543 ep/f5q v/;iW light bulb designed to be used in a 120-V circuit?e 5 evqbc2c; jnifrjbb3) . zg5/+x6rq rhp/x4

  A toaster is rated 8iu6,idtz(u*ink )csu4od : o)k s+ z5t00 W at 120 V. What is the resistance of its heating element?:)zzuk sco 6d tsio+* n)i(d,utiu4k5

  A 200-W resistor is ratsn-ylzdk1 9/ ted at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated at *j,s 2bfge4f tv5o7yw p52+ kwl,nqo pyq6zj4 $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what current does it dr-m o+r:fqm i k7p 3m40g/tafguaw?

  A lamp uses a 150-W bulb. If it is usey1;ws8y b iwjdvg*9; /i4ku bgd at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What is its resistatxnyn3; 2fo1 9u - z*epahu:zcnce?

  How much does it cost to operate a 25-W soldering ib g),4u y3eusxron for 8.0 hours, if energy cost34x ,uebu sgy)s $0.08/kWh?

  How much energy does a 100-W lightnyhd:.kpa id9g x;59s bulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V liltj)6ke2 6(+2 u 5qi iccvpbtine for 2.0 hours. How much heat energy is producedq+v (cjil )2 k6ebcputti 2i65?

  A battery is rated at 12 V and 160 A-h. How much energy dogc)l : zpbgp,jk7q9s 0es the battery store?lp0j7cs: zgq 9kpg,)b

  How much energy does a 25-W soldering iron use in 8.6jkrdm2 -iv4u 0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuzq 2 kd*5l;vs;fhq:oq)+5 ihzob4ec k ming the power company charges 10 ce ;hqbk+fk)c;q q*vz h5dlze oi2o4: s5nts for each kilowatt-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turcf7jntqat*/ d/4kzn, ned on 8.0 hours per day. If electricity costs 10 cents per kWh, how much does it cost to run the computer annually?d t t4na f7k/z/nj*cq,

  The monthly (30 days) electric bill included the cost of running a central air-c(yglt eets/9 z0 o6a;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 the monthly electric bill if ele(a 0gclz ; et6yteos9/ctricity costs 8.0 cents per kWh?

  The heating element in an electric drier operates on 240 v2ii+bmf.vpx)+9dg q;pwkt- 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 tempg9+)i2w mvk t +qpfxvp-i.;dberature.) What effect will the repair have on the power dissipated in the heating element?

  14 A of current flows thjjhqv2 ;p:9 yirough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costd6 xa-(9 w4c9wdevywbs $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. How ve:xqql 7,q nsz4zou 6*gi1k( much current does it z xkqo,qu*nesl: (741iv zg6q draw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source.y xf 9gczbsf46; it.(w What rms current flows through this(4 9tfgfc;xbws yz6.i device?

  A 500-W device is connected to a 120-V ac p-0ckural y +y,ower source. What peak current flows thuralk,+c -y 0yrough this device?

  A 500-W device is connected to a 120-V ac power source. Whag+ y: w/yc3+vwz j*kjgt is the peak voltage across this devi gcvwjy z:w*+g y3j/+kce?

  The diameter of a copper wire is 0.081 inch. The maximum safe current it can czvby 6.rg)3d a; x8ur6gkwg)xarr)gbugaw)y8zdkrvr 6 .x g;x 63y (in order to prevent 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 $8.5 \times 10^{22}$.)