A device that produces electricity by transforming chemical energyyix8bg wji2 8+zj9on7 into electrical energy i n+b2joi9w7y8gz j8ixs called a

  A car battery

  The total amount of charge tum0j5tfu- vujs2+ 3mrw,k/*fja / d wchat passes through a wire's full cross section at any point per unit of time ism+aj-u*/wj , dfwu3 tc05fjkm ruv2s / referred to as

  The direction of convention current is taken to be th7p9;rv+vyyatnec ;xf tds j73a0-yq;e direction that

  A coulomb per second is the same v/ ov8lht-42 d zkul.das

  Car batteries are rated in "amp-hours." This is a measure ofo jm5c(f c sfj9:ygb8n2q0z0y their

  The resistance of a wire is definedkz29:lb 7gl(7rkjb:e - qt aje as

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

  The resistance of a wir, oyybh pife6i7x:0k 0e is

  The resistivity of a 9wnq/.n rgv .pwire depends on

  Which conducting matj0 7bti/o ;rylerial has the lowest resistivity value?

  Consider two copper wires. One has twice- 0 aekogd4ce( the length of the other. How do the resistivities of thega0d( k4ee -cose two wires compare?

  Consider two copper wires. Onx9qn8ja: z x 8eug9y6 b6tln;ue has twice the length of the other. How do the resistances of these two wilbyx6 jnga 9n e 9u:qxz868;utres compare?

  Consider two copper wires. One has twice the cross-sectional area of the other+qplw:. n-.xmxe h s)f. How do the resistances. p-hx:fn)qlwexsm + . of these two wires compare?

  Consider two copper wires. One has twice the length and twice the cross-secti8y2)izng , pdcqw.g6 + m)qltzonal area of the other. How do the resistances of these twwct6p z2.+ygmd) 8 )qnqz,il go wires compare?

  The length of a wire is doubled and the radius is doublek)hg p7yqw3n q*uc 3.wd. By what factor does the r) h*u3qcgn3 pqw.7kw yesistance change?

  How much more resistance does a 1.0 cm diameke p3pc4f mp t.9ib3yt ;hbwtph+ q;7-ter rod have compared to a 2.0 cm diameter rod of 4p+fbm7 9b3iptc 3; kw-y.pheqth;ptthe same length and made of the same material?

  The resistivity of most common metals1 hw 35y4mgw dwt-)/w- qeflnn

  Negative temperature coefficiev8zh(ami oq-p+tf) t spj 6r83nts of resistivity

  What is 1 W equivale2onn kz0hcjjjb3*pg+ 6wc; f,nt to?

  A kilowatt-hour is equivalea4q6 yyoguola w,w 72h7fb5/ unt to

  If the resistance in a constant voltage circuv8a4o fgb332z c nvjo*it is doubled, the power dissipated by that cav*og vz jf3nc8 4o3b2ircuit will

  If the voltage across a circuit of constant resistance is de) h.k.cbel(8,(+xpvatod a a oubled, the power dissipat)oepa( axk tvb(,d.+. c8 ehaled by that circuit will

  If the resistance in a circuit with constant current flowing is doubled, the 8ym2 m+l o bhy oq9v22.g.tdkrpower y9l2bvqmy r.82hmo+ 2kto.dg dissipated by that circuit will

  If the current flowing thr7zr; g z*hftk(j;n, +hkwqm t;j*q-urough a circuit of constant resistance is doubled, the p k+zt; rh(kzj,w guqrnf ;ht7m-* ;jq*ower dissipated by that circuit will

  During a power demand, the voltage o 6je+g5 a/fi.xnml:j mutput is reduced by 5.0%. By what percentage is fag+:x 5ielmmjj6n/ .the power on a resistor affected?

  A current that is sinusoidal wikra 7*okyb rb(u-n7)+ p v.autth respect to time is referred to as

  Consider two copper wires each carrying ac .rg ,u* wdc-yv1to4b current of 3.0 A. One wire has twice the diameter of the other. The ratio of the drift velocity in the sm4 br-.vyd ,cg*1otcw ualler diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentiall9ta a6y:qm7bbay( n*ly zero at very low temperatures are refb a* q:6a(9mytnb7 aylerred to as

  What current is flowing if 0.67 C of charge pass a point ix pe:y7poq b)q6; (//hdzbwamn 0.30 s?

  A charge of 12 C passes through an electroplating apparatus in 2iy 4. j( z3g;aud.xtcb3sjf 2k.0 min. What is the averakgy.t3 fdcx.ab( jjz 4u;3s2ige current?

  How much charge must pass by a point in 10 s for the current to be 0.5eqy ;k j7.8sgp0 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)cjea2v; 4p*dk/eol s3 g jivd8 m0a-o 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 d6am dpq4mw,8 q/c5ehtm8c3x of current, has been left on for 10 min. What is the net number of ele camtc6h4, m35mq dpwd8q/xe8ctrons that have passed through the coffee maker?

  In an electroplating process5ux3zyxy - f3ylr:1 hz, it is desired to deposit 40 mg of silver on a metal pf:5uyyx3 yhzx-13l zr art 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 weight of silver is 108.)

  What potential difference is required to cause 4.00bw5aj+ ;g) bfmwe o8/t A to flow through a resistance of wj5w8/f+b ga);mb toe330 W?

  What is the voltage across a 5.0-W resistor if m//lu -lpw3vcxkq:0x0mnb tq )29d0x cynq:bthe current through it is 5.0 A?

  A 4000-W resistor is connected across *opkdg; t/j2yd uq)7hvw ) 4jl220 V. What current will flow?

  A light bulb operating at 110 V )d6b0ye k px+q)dvdk :td45sq draws 1.40 A of current. What is its resistanced)k0q4p:5)e ds +6bdqxvd kyt ?

  A 12-V battery is connected to a 100-W resistor. How many electrons flow throy iszc 5fznvjiyh i8-p5b1y :3)v8j6k ugh the 8pv53i y1ii)s:njk -hv 5y68ycz zbjfwire in
1.0 min?

  What is the resistancw ,n orl rkrl*j :jvp5i8m8()ae of 1.0 m copper wire of diameter 0.40 inch? (The resistivity of copperij*lpjr 8nwk:v 5a r(,8m)lor is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod +si1zqwc ;gu-vd(ha . dk0bt.1.0 cm in diameter and 45 m long, if the resistiv ;t(q. +0zgvhc ukw. bdai1-dsity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resis:cw x z(xzsa9-tivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wiresqji (0(s:xv w (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, measures 0.040a4zon -3mzimn 3duuxc 1b(3e) ohms. What is its resistivity?

  Calculate the current through a 10.0-m loaa i3..ow,gxghg3 3 tpng 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected a 3ghw3ig,t.p3 aoxg.to a 12.0-V 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 c+1/csaf9mxwf m x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (The resistivifx /amf1wc+9sty 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 rj.mfwjc3v9zas* zxkoi(w k)1 q *7k8of $100 \times 10^{-8} \; \Omega \cdot m$. If the wire carries a current of 0.50 A, what is the voltage across the wire?

  A 1.0-mm diameter copt nq iocpz7y9s:8-,ooper wire (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 0/ck:lp9fjpnunw y,7a 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 resistivity o 9ct1zrcmzcpn9 (8q+ lf 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. The resis 41*;skjkvssv d7dq9qtance of the platinum wi 1sks4q7vddj9;q* vk sre 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 throug:av1oc eizhj )- vi*a-h an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 Wvbkjdnm;xo674j z ,7q. What current will it draw?

  A 150-W light bulb running on 110 Vjipu/cy07i8ruv :5 nq draws how much current?

  What is the nominal resisdh:jqr8eyf*u( 5*px o tance of a 100-W light bulb designed to be used in a 120-V cie8 :ju*yx orphq5f *(drcuit?

  A toaster is rated 800 W at 120 V. What is the resistance of its heatinb3fex)5f, nwd) z z;llg element?z)b3;w)z l,5fxf eldn

  A 200-W resistor is rate5n7eudts/c; q48 llst d at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is ratey0f -lny k4;tgn2qvg6 d at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what curtg olkob3d 9m3ak 4n.7rent does it draw?

  A lamp uses a 150-W bulb. 8z.w4dcvo)h;l;m ,fhie34n v: durupIf it is used at 120 V, what is its resistance?

  A 25-W soldering iron ru f7ou.6a )u+2 j-ark3d 2j+amgepxjh yns on 110 V. What is its resistance?

  How much does it cost to opee .o3ic*wh mf vzu-)y/fnv/5krate a 25-W soldering iron for 8.0 hours, if energy o/5ifvnh e*z .)3fyuwcvk/-mcosts $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 hours?4;urnx+ s mf4o

  A 1500-W heater is c aoz(ap (o9t0w g8owh/onnected to a 120-V line for 2.0 hours. How much heat energy is produ8ow h(/awza0g p9(oto ced?

  A battery is rated at 12 V and 160 A-vp v -.ds19r ds2:ymjnh. How much energy does the battery store?dp1m 2-:d 9srynvjs. v

  How much energy does a 25-W soldering iron use in 8.0 hours?yadl;xyy yzv d*2i:)ut i/m5*rj;p ;o

  A 100-W driveway light bulb ic 9qyw f02zu8 bi4(xbls on 10 hours per day. Assuming the power company chqb w8z lxby2(u90fi 4carges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus mo xckd4*(pf1pknitor) is turned on 8.0 hours per day. If electricity costs 10 cents kkfpc( d 1px4*per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of running a centrr)vp:x i3cn o:al air-c v)po3:nicx:ronditioning 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 electricity costs 8.0 cents per kWh?

  The heating element in an electric driee sh + rhoy9bh 328ckcdi79,pur 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 resi rcyd+h2ihbeschuo89,3p 97k stivity 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 flows thhca 1jx d7c/bmg6u1 fpk03: z4wmb* cxrough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs - xqhko*vfzqekp-y4 t 4/t5c 0$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 tep p:v20jiv0q xx (dr 2w-w9i2.0 hp has 60% efficiency. How much current does it draw from a 120-V line? x(pjw0vip9 -2vq0dtrewx: 2 i($1 \; hp = 746 \; W$)

  A 500-W device is connected kenjk e;eq;8-dx/4 tbto a 120-V ac power source. What rms current flows through this devic4n/ee8bkj;q d-e k;xte?

  A 500-W device is connected to a ckzzy ujvr8+0vdw6zqx7g9nr+a c,+4 120-V ac power source. What peak current flows through this device?+vcny+cvq7z8 r4+z,zgj d xwr9ka06u

  A 500-W device is connected tu o(hxlsq;3a-r0n( k8 xnf0.izhldzcy ;// kyo a 120-V ac power source. What is the peak voltage across this devic38k /h rnzn xoq(0u;k/(zlh0 ldxias;fyy- .ce?

  The diameter of a copper wire is w10h6 q v-jkpr0.081 inch. The maximum safe current it can carry (in order to prevent fire dangerpv1qh-0j6kr w 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 $8.5 \times 10^{22}$.)