A device that produces electricity by transforming chemical energys5pok-aa(q) q into electrical ep5-qk oq)a sa(nergy is called a

  A car battery

  The total amount of charge that past4a1q(g 5sm(du -hprqe;iq7 vses through a wire's full cross section at any point per unit of time is refer qp(sdmv(trgu-e 74haiq5q;1 red to as

  The direction of conventjp +d*:z- 7jcm ;k l/p/xlaoueion current is taken to be the direction that

  A coulomb per second is lmx-jpz56,x)8e) l fk mmt8nithe same as

  Car batteries are rated in "amp-hours." This is a measure of thfmzm7i854 oq7jo ru6heir

  The resistance of a wire is7erz;131:dk 7 p oazyf zw8vrg defined as

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

  The resistance of a wird,wvce w p;p9.e is

  The resistivity of a wirs rts8au9gi:o y 8 x 07zwc9*5bxpuw3l1j i+mje depends on

  Which conducting material has the lowest resisf3m6 wl6q.*l7 qj8pzk5ylr i ztivity value?

  Consider two copper wires. One has twice t chc2-);9fepnvfz(athe length of the other. How do the resist9h ptva(f2cfe z)c n;-ivities of these two wires compare?

  Consider two copper wires. One q075.eoqhb *enavzv w(;yt) w has twice the length of the other. How do the resistances oq zq o05b) e*.7e;wvta(ywnvhf these two wires compare?

  Consider two copper wires. One has twice the cross-sectional aym2k b i4q9y3prea of the other. Hk y429myp 3bqiow do the resistances of these two wires compare?

  Consider two copper wires. One has twice the length and twice the cross-s9ju/f68 fs a;iubep(kectional area of the other. How do the resistances of these t af6;ujb( k/fs98puei wo wires compare?

  The length of a wire is doubled and the radius is doubled. By what factor does y/h zzx*w4kk* r)bflhob;wq 74tam + 7the resistance ck)7qbkz/mw *47faw l h4ty+bxo;zr * hhange?

  How much more resistance y-oahj/ljl00 does a 1.0 cm diameter rod have compared to a 2.0 cm diameter rod of the same length and made of the saj yllh00o- j/ame material?

  The resistivity of most commrs bzz2txip :,nt 3+b+on metals

  Negative temperature coefficients of ryt ebg ws,+oa v857en0esistivity

  What is 1 W equivale hfnt/vbh46e g o,3b(ent to?

  A kilowatt-hour is eqiy4a 6 e3nfu ;3o)d5og)kr3lvucte7duivalent to

  If the resistance in a constant voltage circuit is doubled, ta7v+s5u84 g uc9 ckbobg jm6ad w93a4sm9f:fzhe power dissipated by g 9au6zg9sjcom7d9cf5 s w bauk b3amv448:f+ that circuit will

  If the voltage across a circuit of consuxhv5 1 g-b+:qmn+is6kc h7oatant resistance is doubled, the power dissipated7i :sqvnm6a cxkgh uh+ 1-o+b5 by that circuit will

  If the resistance in a circuit ilwxq*jb9o +*t8 hd9t with constant current flowing is doubled, the power dissipated by*tqw*j db9lh 9oi+x8t that circuit will

  If the current flowing through a circuit of constant resistance is doubled, the zc7kag 00k9eu power dissipz e0k9ac0u g7kated by that circuit will

  During a power demand, the voltage output is reduced by 5.0%. By wh.z) kyy5o mi*hat percentage is toyz*ihm y5k. )he power on a resistor affected?

  A current that is sinusoidal with respect)odaqn-w7evj zle jbv n*40-2 to time is referred to as

  Consider two copper wires each carrying aq 3n b:.;y; vutaiuf5a current of 3.0 A. One wire has twice the diametn;ai35q:uu; vb.ayfter of the other. The ratio of the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomesffn/*u+xumm ( essentially zero at very low temperatures are referred to asumn/+ (fmxf* u

  What current is flowing if 0.67 Ch aefw04i0z 9c of charge pass a point in 0.30 s?

  A charge of 12 C pash dot4dh7 c kn3bia3b1hp3 j(-ses through an electroplating apparatus in 2.0 min. What is the avehhod - 3 jb3diph4t(b 17n3cakrage current?

  How much charge must pass by a point in 10 s for the curren- m;alm )0jbppt 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 ih(ir5cro m49oc+.2.ct un e w y8)pdoaf $4.0 \times 10^{16} \; electrons$ 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 og8 k 7ddp-v;azf current, has been left on for 10 min. What is the net number of electrons that have passed through the -v8 zd;g7dapk coffee maker?

  In an electroplating process, it is desired to deposit 40 mg ouzvw5w3,6 yup f 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 silverp 5,6u3vwwyzu ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference is required to cause 4.00 A to flow through a resitf:b i x2*1fklp3xg+ 8xpzh h9stance of 330 W? ktxhl+p28zg9x1*xhffp bi3:

  What is the voltage across a 5.0-W resistor if the current th3 .(n(jyyf fndrough it is 5.0 A?

  A 4000-W resistor is connected across 220 V.** o3ixep0 5qms0z t./w2ab txgovs/h What current will flow?

  A light bulb operating at 110 V draws 1.40 A of current. What is its resist096uesrfvcopqx ,w.i; 6bxac:,ove 0 ancee.vf:o6 x0ec9s,, biu0 orax ;c6wvqp?

  A 12-V battery is connected to a 100-W resistor. How many electrons flow th:; /v u8v wiv4 hrvkv5ewybo*4rough the wirev y/viw;*ow5 4v8 vk4bvur:h e in
1.0 min?

  What is the resistance of 1.0 m copper )id7;qnv. z awwire of diameter 0.40 inch? (The resistivityq )wnv7;i.d za of copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diameter and 45 m lond/sr6 eahr ni)ll;t: 1g, if the resistivity ir/et si1h:l;n)d l6r as $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire teb v2 5- vfjltl*8fa+(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 (resistivi.amfcbqom;hj: 5;ygr 79k a +xty $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, measures 08k thpot)5gm ( il)*iy.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radiusy4t skb0dh bw-7pu/n- cqi5n4x qn /.z is 0.321 mm) nichrome wire if it is connected to a 12.0-V batterynt 7k-5wixcp nbqh.-b 4n/d/qz0syu4. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cross-sectionbgzq o:3qldzapi7b:)k53/bg:6gwk n ys* to3, 1.0 cm x 2.0 cm. What is the voltage drop along its lenggzb3nbqg /:6sqo5oga 3y7b)p3 k dwk:l* t:izth 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 0w/3 b/gglwea(d/d* ws .50 mm 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 wi ot,u6*d5cy3ajul l-g z2mb 4fre (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 resistance 5a9 q :jt40b1;fudtmqiw tav4of $18 \Omega$ 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 resish5xkvv1w m; szn vsz+x)7c-y 3tivity 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. The r4kw06p -vibwy)3fzpfesistance of the pbw4 w pv0fi-pfy6kz 3)latinum 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 a :j t6o1cnkqc4wf(b:y9 zg,wyn $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at jbzghk6 f9ih j(u.ompnl(/(;1200 W. What current will it draw?

  A 150-W light bulb runni j8cb:ayr my7+ng on 110 V draws how much current?

  What is the nominal resistance of a 100-W lighxe;bs * (c f2z-ipop7jt bulb designed to be used in a 120-V circe jocsz 7(;f b2*p-xpiuit?

  A toaster is rated 800 W at 120 V. What is the resist kfm/msg (*of8ance of its heating elemen *go(fsm/8kmf t?

  A 200-W resistor is rate8i79-g,b8 nsjcbdin cd at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rakfld 87n8u/vd x (hkb9cu*w;wted at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what curz t+z xkn+w4up v7/3vdrent does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, whz.vdl3d dt0x wl:sv7. at is its resistance?

  A 25-W soldering iron runs on -t dqai9ibo2u -ppz+zo 4a 2;v110 V. What is its resistance?

  How much does it cost9aw-tmsw3vvl7 lnm7. pr9 i -gji/l 8r to operate a 25-W soldering iron for 8.0 hours, if energy i8/sl n7lgltrm9-3v7 mw-ji p9w.v a rcosts $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 hoursek y /imz*+vv/?

  A 1500-W heater is connec c a3s2l.i ,ztw5evsf+ted to a 120-V line for 2.0 hours. How much heat energy is prodf3a 2 5vw.eis, zlsct+uced?

  A battery is rated at 12 V and 160 A-h. How much energy does the battery )n4 -z cd9,dy2 g cvjpoww/uu7store?uwvudz,g o-7c w/2d c94 ynpj)

  How much energy does a 25-W soi *h6nrku5+qmk9z6d wz, wpo7ldering iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming the powgyurx4ph/9y v:4 :cz49 vnjocer company charges 10 cents for each kilowatt-hour of electricity used, estima4hu 4xy 99j /onz v:vygpcr4:cte the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours per day. If elefk we)85e-x c, y7p okcg9yqn2 *0nvxactricity costs 10 92kae wf q-)*5 c,c8op enkv0ygn 7xxycents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of running a centrzc(vn r8v81jual air-conditionin8v zjn1 8(curvg 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 drier operates on 27xrz :/vt7d0 fgp 5f7deqb(we 40 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 1 7qd7tzw(7pff/ be:ex0rdv 5g0%. (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 flows throug9-g/4a p0bz yje0 vzlmi /-pplh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costt3i ;8ybn h:bqirjekb;c 6 dl.,)2kx rs $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% effx0e*1 ga7lyxy9dg kc6iciency. How much current does it draw from a 120-V line? ya19eyg7lgkcx60 x*d($1 \; hp = 746 \; W$)

  A 500-W device is connected to atgi)cs+.;3/ reobh r8uil2 u o 120-V ac power source. What rms current flows through this di /+;3tobgrs8c uo2 )ei.lruhevice?

  A 500-W device is connected to a 120-V ac power so )5jmum m+vpkr4.hbp4q s+/feurce. What peak current flows through this dev5vrqmbp4 +p )m /kfhues4+m.jice?

  A 500-W device is connected to a 120-V ac power source. What is the peak v02e.;bkrrparh 66hx tge* w1coltage0rhhx*e. rt bce 6 2r6p1g;kwa across this device?

  The diameter of a copper wire is 0.081 i+p g k)x7a14djvc*ivench. The maximum safe current it can carry (in order to prevent fire danger in building construction) is 20 A+4e vd 1vp )ax*7ikgjc. At this current, what is the drift velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)