A device that produces electricity by trawn3y1f8(hm y/z v)ifhnsforming chemical energy into electrical energv 8hfi(nyy)mf 1 /hzw3y is called a

  A car battery

  The total amount of charge t n82pqx1szcc;6: azmphat passes through a wire's full cross section at any point per unit of time is referred to ap s x18 c2;6znqczma:ps

  The direction of conven4;bm1c y 8edsxtion current is taken to be the direction that

  A coulomb per second is the sabw9ilt l /-5vg4q/ i;p;ptkhkme as

  Car batteries are rated in "amp-hours." T+qat j8m5gjzbq 78 ti5his is a measure of their

  The resistance of a wilueb s wxsfy35p/xv(:, : (kwqtksr75re is defined as

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

  The resistance of a wiww ui+6eqz9f3 oug27 *p-pau yre is

  The resistivity of a wire depe+viz -;wlsb( qnds on

  Which conducting material has t4+eh y ay7xj0akx2(x04tcgbzhe lowest resistivity value?

  Consider two copper wires. One has twice the y tqeo;u qx (qt/tj8a . dn mq0:+w7-fehi1uj2length of the other. How do the resistivities of thet q t;q12(xn:+ue -tjj 8im0de fh/owy7uaqq.se two wires compare?

  Consider two copper wires. One has twice the length of the other.bm jy 4m4 ua3pci,rx++ How do the resistancemx,4jpm a3c++ y4briu s of these two wires compare?

  Consider two copper wires. One has twice the cross-sectional area of thzniepbyn4xj/7 - 8zx5 e other. How do the resistances of thesz-5b/7x8 pxjn eiy4z ne two wires compare?

  Consider two copper wires. One has twice the length a 00 .huoe .-kmh6gswuknd twice the cross-sectional area of the other. How do the resistances of h60.gum .ko k0 -ewsuhthese two wires compare?

  The length of a wire is doubled and the radi+l6wf* c hm.f ,oj)wzlus is doubled. By what factor does the resi) *mc6f,lfzj ho+w lw.stance change?

  How much more resistance does a 1.0 cm diameter rod ha-py tvzdl(v-d -w3:km ve compared to a 2.0 cm diameter rod of the same length and made of the ( myt- -:v-ldv3wpdzksame material?

  The resistivity of most corh)h d1)f 3g+dlp7p4 apb4mt)jvdw 3emmon metals

  Negative temperature coefficients of resgqnb/7 vpy xpjw(h fv2+;3ow/ istivity

  What is 1 W equivalent to?wzg8z1 bw- pz. /b+tokj12zw vla(ny2

  A kilowatt-hour is equivam19 dtb(t)n3wc ov 8 wl3jg13ikgvv. elent to

  If the resistance in a constant volspr,: 8h7zauhn t9;n9olac,vtage circuit is doubled, the power dissipated 9 cz s8:pu7hltarnnoh 9;,,v aby that circuit will

  If the voltage across a circuit of constant resistant -4i0*aum)7 hgr kkmjce is doubled, the power dissipated by thatkgru0*i7t) a mmhjk 4- circuit will

  If the resistance in ae9j1ol/k+uoyk7u)e i circuit with constant current flowing is doubled, the power dieojk1yuel9u ) /ok 7i+ssipated by that circuit will

  If the current flowing through a circuit of constant r8zir x;:x mu;v.ku0b 3fy9bofesistance is doubled, the power dissipated by0i o bfbvf;93r ;uyku:z8.mxx that circuit will

  During a power demand, the voltage output is reduced by 5*:oodv +qi2g* gm .ama.0%. By what percentage is the power on m+g .:id gaaooq2m* *va resistor affected?

  A current that is sinusoidaih/ 2 .pdojxzbv7 3j6al with respect to time is referred to as

  Consider two copper wires each carrying a current of 3.0 A.ddy(/m0 elimzqc k8b8 jn3-k , One wire has twice the diameter of the other. The ratio oc dl(kbzmji8ynq8- /0,3e dmkf the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity beco+-g( s;l 3vnwd hd-ciymes essentially zero at very low temperatures are referred( icv-h d3glw- +snd;y to as

  What current is flowing if 0.67 C of charge pass a point in 0 .worz ma9r7*4/yj ;wxwgj,fd.30 s?

  A charge of 12 C passes through an electroplating apparatu0:b hy,(b.n nyrdw4hos in 2.0 min. What is the average b4bon y,rh nw.h:0d(ycurrent?

  How much charge must pass by a point in 10 s for the current to be 0.50cyyxv7*nikch sbc1z *.o4qv7n 9o: m 0 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 i d9hibj wkh44 ra,,+nuf $4.0 \times 10^{16} \; electrons$ 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 curre05kf sg2yqfx 5q2v aoi-re+ -wnt, has been left on for 10 min. What is the net number of eqv0rf5o +k 2ig2e--5fsqwxy alectrons that have passed through the coffee maker?

  In an electroplating process, it is desired to deposit 40 mg of silver omp ie6bab4elp3s 7-h 7n a metal part by using a current of 2.0 A. How long must the current be allowed to run to a-ppb 637ieb mlh4e 7sdeposit this much silver? (The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference is required k3tu/g0pfgmw+( gsu .to cause 4.00 A to flow through a resistance ofs/gtwg0 fug u+(k .3pm 330 W?

  What is the voltage across a 5.0-W resistor if the current thrdo:d lj(4 .kawough it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What currentv 4gl*wf7f0 frrntdde1y5u69 will flow?

  A light bulb operatinit*x ti3 bxn5/g at 110 V draws 1.40 A of current. What is its resistancenx/i*tx t35ib?

  A 12-V battery is connected to a 100-W resistor. How many electrons fm5 4fmup-i6 jpa)kdwgvt3)d. mby/ 2plow through the .ybmk) 3wpj fp/ igua46vmd5- )2 dmtpwire in
1.0 min?

  What is the resistance of 1.0 m xz :1ki6q(od*qkhz9ve3 m h,a copper wire of diameter 0.40 inch? (The resistivit9kzo6qmvx dz h*,3hi (ak:q 1ey of copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diamete,fby: w /olqh0r and 45 m long, if the 0o,qb /fwhy:l resistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper whaymhad:4auw6 wx6 j*, g-zv4 ire (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 wire (red).wqc d 5csds 7(frwjo 5c(4ysistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 resis/g69.vo)8 zs c6x acif vd.fiwtivity?

  Calculate the current through a 10.0-m long 22 gauge (the dun,9t( 0bk 9 ch coy0dfda:,nradius is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. (Thc9kdt fa0c du (n9ob:dn0,h y,e resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 2cezx cc5 ++pzu) n0-cmii rj1r2jy;7h a4- gbd0 cm long and of rectangular cross-section, 1.0 cm x 2.0 cm. i n pa;gre c+idym u5z+0c2h-)b 7r1cjc4z-x jWhat 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 resistivity ;wdb +m7 k by7kci35fdof $100 \times 10^{-8} \; \Omega \cdot m$. If the wire carries a current of 0.50 A, what is the voltage across the wire?

  A 1.0-mm diameter copper wird3fh j49a *y 6xxergz9,ew b5ne (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 drdk)o:-s m)7ejr.bebsr(+ tresistance 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 resistivity of platin*/j ljfpbiqrn5w7c )i 2z(*mf um 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 thesq .0p7yj3k-k 8xdi cn melting point of indium. The resistance of the platinum wire is 0skn-7 yxc i83q.kdjp$2.000 \; \Omega$ 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 thro 2jgj-zs8x+ rough an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 120f6bt 7coo.+ )hnkja,i0 W. What current will it draw?

  A 150-W light bulb running onfi3zh 7mi98 nsx h8(qc 110 V draws how much current?

  What is the nominal resiu8. vut6l5d fcstance of a 100-W light bulb designed to be used in a 120-V cilf6u v 58duct.rcuit?

  A toaster is rated 800 W at 120 V. W( / on5jzarxo(r:ay, rhat is the resistance of its heating elemenjrnra,zy5 (r xa/ o(o:t?

  A 200-W resistor is rated atgynm8,-c92md7sd p sk $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated atijc.2u z3;l m piz8y)t $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulbm-*lspig 6tt8(l zh4,vwf ns 2. If it is used at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If inwk5*uzd uo0)9x.hsd0pm 0n06pryb 9kcgb z7t is used at 120 V, what is its resistance?

  A 25-W soldering ironk3nq 6rl -bm-bvu 8xv+:qdb8j runs on 110 V. What is its resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0otwk b5d8z (g rod.,)k hours, if energy cos d.( od zkbgw,t)ok85rts $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 hourtqelmvbf0/0(7y4 mc ms?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. H8np qz r2y;fpv7 4-m 9pj(ruybow much heat energy is prod7zpjryn4fq;2mp u vpy- 8b(9ruced?

  A battery is rated at 12 V and 160 A-h. How much energy 6)s rw:lrwsr39 :. mu o4y6hkhuevv,x does the battery store? rl9 m3xwvk.,4r w6s6h:shoy v :eur)u

  How much energy does a 25-W soldering iu9 .hdsaat ld4g6/xu/ron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming the power company yt(uwce) -d1+b+y twq s,f8hfcharges 10 cents for each kilowatt-hour of electricity used, estimate the q-f)t, t +8(dy bwu+ychewfs1annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned ozya/, xv 15ji hovl+0en 8.0 hours per day. If electricity costs 10 cents per kWh, how much does it cost to run the computelih1y/+vz05axj eov, r annually?

  The monthly (30 days) electric bill included the cost rm* eij:gggp*m06h4 lof running a central air-conditioning unit for 2.0 hr/day at 5000 W, and a series connection of * p rg 0jl4iheg:g*m6mten 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 generat6w)u pce 3cmw)es heat at the rate of 2.1 kW. The heating element shorts out and, in repairing it, the owner shortens the )we3m6 wpcuc)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 flowzu.3exi; b+ 4z7p.ql ipy1qdus 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 /4k cs*p yuzc4$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::bwkig2b lk3e rate of 2.0 hp has 60% efficiency. How much current does it draw from awbi:lg :k2b3 k 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac powerqfrbzu*t (+6u source. What rms current flows through thi ft zq+b6uru*(s device?

  A 500-W device is connengvu0 y83aol8 cted to a 120-V ac power source. What peak current flows38loay8u 0ng v through this device?

  A 500-W device is connected to a 120-V ac power source. What is the peak vot(+9:onzp/ a hskds. nltage across this :ps.k n 9h/dsaot(+nzdevice?

  The diameter of a copper(h73w;hoqkik wire is 0.081 inch. The maximum safe current it can carry (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 khiw(7;q3h ok electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)