A device that produces electricity by transforminp h/ iwr7g*j4p3 e*e(lribnp4g chemical energy into electrical energy is calle*j/ r(bwgp 3erlp74hn*pie4i d a

  A car battery

  The total amount of charge that passes thro 6jym a1i15spf9oahyr bmc 4*sl.l;o7ugh a wire's full cross section at any point per unit of tioa ypia*f l1 .7hsbmym 56j lcs4o1;9rme is referred to as

  The direction of convention ct a0el0 1nfqj,urrent is taken to be the direction that

  A coulomb per second is the sag0 -k-gn. (2tagncyj3ia gp+xme as

  Car batteries are rated in "amp-hours." This is a measure of theky9g61 dtlm*q ir

  The resistance of a wire is definer jvl290*pidz d as

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

  The resistance of a wirs g-8hga6e/lye is

  The resistivity of a witoo r 2-6zh+vi-yo 6gdk*t6 mvre depends on

  Which conducting material has the lowest resistivit;c-b u 5foiqm8rjb/ex jo19/hy value?

  Consider two copper wires. One has twice z:fe a3hm6c(awqo4(6b0a jv t the length of the other. How do the resistivities of these twt oe66bm4w: zaafa 3jh(qcv0 (o wires compare?

  Consider two copper wires. One has twice the length of th7veyh4czhfblz. / 19 x wd:m8ae other. How do the resist79fc1xdm 8yawz4 le/h z.:vb hances of these two wires compare?

  Consider two copper wires.z( ;u1trf0,wwf1dalx One has twice the cross-sectional area of the other. How do td,xufl; aw 01wfzr(1 the resistances of these two wires compare?

  Consider two copper wires. One has twice the length and twice tiq gxe(i0v h.*he cross-sectional area of the other. gqe0(hi*i vx.How do the resistances of these two wires compare?

  The length of a wire is doubled and the radius iss)o 59zi-ldeai 3n0zd doubled. By what factor does the resistance ced l9z) zin-0od5as3 ihange?

  How much more resistance does a 1*zg *;bmqtf6a.0 cm diameter rod have compared to a 2.0 cm diameter rod of the same length and made ofabf tgm;q6z ** the same material?

  The resistivity of mosv 84egq1 yh+ 7vb3szatt common metals

  Negative temperature co2/t-cqf.m )qmh7/ h d-f uzqhwefficients of resistivity

  What is 1 W equivalent ttfwo.n .q9 ) dd3j(uzio?

  A kilowatt-hour is equivad2 o 02y mhc,ov9gknx(lent to

  If the resistance in 3t jn0zx*qe1msnn r6/ a constant voltage circuit is doubled, the power dissipated by that circ6zjq0 xt 3snm1 ner*/nuit will

  If the voltage across a cpr .msoviz 3 3m/s1a1hircuit of constant resistance is doubled, the power dissipated by that circuit wimm3.p /sazrs v3h1o1ill

  If the resistance in gzcyn:4xfs ) 9cjki,; a circuit with constant current flowing is doubled, the power dissipated by that circuxs)k:i,fg 94jccy z n;it will

  If the current flowing through a circuit of constant resistance is doublgx7k;wxocjiru/+ +u j f99( vxed, the vkfcurxwujoi9gj(/ ; + 7x +x9power dissipated by that circuit will

  During a power demand, the voltakgg ccbtsaj*y2k3n:3n 4t69 t8a ex)c.ppnc 5ge output is reduced by 5.0%. By what percentage is the power on j.et3)y2cgknp4:5sk9aa* gbntpc 8 3 6xcntca resistor affected?

  A current that is sinusoidal with respect to time is refe50mi-to i:kfjqa x/)x rred to as

  Consider two copper wires each carryingj04 m7:u e6e:j /9iftblvoaklx l2yw/ a current of 3.0 A. One wire has twice the diameter of thumjaj/okf/ el:tl0 6e vx9 lwiy:7b42e 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 becomes essentially zero wt.v cj -8nm.o l5yw 6q/tujj:at very low temperature .w5 8l:wmno.6-q tyjujjv/cts are referred to as

  What current is flowing if 0.67 C of charge ph2kj kva6 68ykass a point in 0.30 s?

  A charge of 12 C passes through an el8e1zs t.k4gg a xj;(nfectroplating apparatus in 2.0 min. What is the 1;ef z kg48ganj .tsx(average current?

  How much charge must pass by a point in 10 s for the current to be 0.b+ ;; huveisfnbo5.1o 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 b6ke g07 bzkipt; 8lw6if $4.0 \times 10^{16} \; electrons$ 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 current, has p3 8idr h7hy/6yxsz 2jbeen left on for 10 min. What is the net numbe7/2h8xy3p6jzishr y dr of electrons that have passed through the coffee maker?

  In an electroplating process, v pv7j8ymg2;ztxn)ls4 l d9)tit 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? (Tv8d n t4p7 )m;tx)lsy2vlzjg9 he silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference is required ttu*6, :s acywx7j9io wfn1s n*o cause 4.00 A to flow through a resistance*ns of61*uc i7 x:w, nwjatsy9 of 330 W?

  What is the voltage across a 5. kux8 -zc- yhtifos7(*0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is cox en a6n.l)4winnected across 220 V. What current will flow?

  A light bulb operating at 110 V draws 1.40 A wsu8i1y0 ebs+q z9fa:of current. What is its resistance?wy8u9 if:+bsezq1 s 0a

  A 12-V battery is connected to a 100-W resistor. How many electronr0n; :c0h::x8pkbvu7 lyihu m s flow through th:lmh r vnx:hcy7b0;8ku0 :uipe wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? (The 2xcat c 6t3;fqxlg( grx)fy74 resistivity oaxcl6 tg)g;r c3f4fx qtxy7 2(f copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance o7. v,svi 0d:+jjrourwezg+/ ab )5dpof a circular rod 1.0 cm in diameter and 45 m long, if the resistivityjowbdez. +piagro0us75v j/r:d ,+v ) is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resi2j*ad l2ax9hnstivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistivity :: : m33izxof)ocbol:fqicx($1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, oa+ n22y3e2k(h 1wjtcm.wg dg4.0 m long, measures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 0v:gy 9)s)w6vroamnf gauge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. (The resistog sw)a9nv0r yfv)6m :ivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cross-sectq)d7uj4gc( *j zn9uzf ion, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (The 4)f gu( qujzz7jncd9* 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 al(u qax2a -)nu62us;r0mmwj knd 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 (resistivitkvyuxzspv6k6d)q)vms.h3m d8 ch4 46y $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resistance ofgfr/)8r-w fmv) qx z4m $18 \Omega$ 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 zbc/c(y mnfz700 qh4bresistivity 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 use + l*zxh5.ttxa -./-dnehimvfd to determine the melting point of indium. The resistance of the plati-5/-i z hhnamtev fd.x.+x* tlnum 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 an a 9oiy b9-m(gr,ni1e:tts+eh$10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current will iz5/ *uxlay7/ex 13a +ibc+fb p*hde dxt draw?

  A 150-W light bulb running on 110 V5tkvksu)wr 91b:/cq c +esxj5 draws how much current?

  What is the nominal resistance of a 100-vk(7gi ypbn4z 0 8ygm5W light bulb designed to be used in a 12005ipyvgy n48 zbm(7kg -V circuit?

  A toaster is rated 800 W a eo a7e,0l9;trji*nrew 3b ;fat 120 V. What is the resistance of its heating elementr ,lafe*r;0jenea97tb i o;3 w?

  A 200-W resistor is rapz4s54z- yrumfl 1 bm*ted at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is raf yk01a::l, ;lmslr ythn:ro1 ted at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used+9glnkoae9b- :y-tbn6 e8a rz at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If qt7vb9 kgr1-wit is used at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What is it2 2 jd-2ip3rucln)1htwxzn9zs resistance?

  How much does it cost to operate a 25-W soldering irons ypyevde9n7 b; 76)vl for 8.0 hours, if energy co9de yvsvb p7e);6 7nylsts $0.08/kWh?

  How much energy does a 100-W light bul(jmkiz0av 1g+ zb x8s5b use in 8.0 hours?

  A 1500-W heater is connectey-;;v 29 9ldciuthl od) t)ggnd to a 120-V line for 2.0 hours. How much heat energ hdu;l9gotc-dg ltn)2 ;y9)viy is produced?

  A battery is rated at 12 V and 160 A-h. How much enb:y mw+9hmbfkz691 :me wjt s7ergy does the battery store?w z 1e:wsty+m9b79jfk m6:hmb

  How much energy does a 25-W soldering iriobe 3l rv*lc:* fq6lt v.ih+*ywv,c0on use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per daybo hsl/s+ i+ v:t-0esa. Assuming the power company charges 10 cents for each kii/slot0be:v- a ss h++lowatt-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours per day. u-90 c ptaac ueru33u.m;q ps*If electricity costs 10 cents per kWh, how much does it cost to run the computer anne3 cr s3.- 0p*tuuaau9c;qmpu ually?

  The monthly (30 days) elea;7bvqby7qcw/8w9*-r f q1r ia.yju mctric bill included the cost of running a central 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. H* ybwyvr1bj c8qu-.7m9raqq/ ;wai7fow 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 opv0e-ufukio/avt + 2t1 y52t sierates on 240 V and generates heat at the rate of 2.1 kW. The heating elemen k 5suy a20o/2eft vtviiu+1-tt 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 temperature.) What effect will the repair have on the power dissipated in the heating element?

  14 A of current flows 0 b/um;9i .5sgptotycmoh co9q14a,cthrough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costm2 ;x5(omahvqs $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% efficib(fsny-lpu8 *ency. How much current db8 -ps l(yn*fuoes it draw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is con x .i3c2os:mb5xdvl io. 0uqdm6(i1lunected to a 120-V ac power source. What rms current flows througuixo.i21:vlm (cb0 lmd3ox 6 uq di.s5h this device?

  A 500-W device is connected to a 120-V ac power sourcer*2qxm:zrhtex5mvg5 ov 15 z/. What peak current flowsvh rg/o:qxt r51 5*z2me5mxz v through this device?

  A 500-W device is connected to a 1ih)e 1 n(lrr ct8/rw0l20-V ac power source. What is the peak voltage across thisnwl/r1ir hr0c t8()le device?

  The diameter of a copper wire is 0.081 inch. The maximum hez 0g0uj ,f3gsafe current it can carry (in order th 3 ge0j,uf0zgo 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 $8.5 \times 10^{22}$.)