A device that produces electricity by transforming chemical 4*c3nx4p+:a gdsjy al 3:pi hfenergy into electrical enes: 4afp cjn4l:p3d +g3yi*ahxrgy is called a

  A car battery

  The total amount of charge that pass+va6/8gb mos fes through a wire's full cross section at any point per u fv/86+ob sgmanit of time is referred to as

  The direction of conventiou gkzrcc*bq,keq7u9z91 , gj2n current is taken to be the direction that

  A coulomb per second is the sa,0wfgh6dl f/0 /gcqqnme as

  Car batteries are rated in "amp-h5mwb t7y;ftww4o4px(ours." This is a measure of their

  The resistance of a wire is definern- z;bg;t1revn g;u) d as

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

  The resistance of a wirht ./) kl0 wii(qmn8sxuot m.9e is

  The resistivity of a wire depends+m8idjmq3-*lm q vcbp9 ;loi- on

  Which conducting material has the lowest resistivit k)dx)du,, b6;g hyszhy value?

  Consider two copper wires. One has twice the length of the other. How do th e;qi2h+d o,ppe resistivities of these two wires compo2e q+pidp;,hare?

  Consider two copper wires. One has twice t fl0qy wp8nib0j5hw,-he length of the other. How do the resistances of these two wires w0f-n80i,w5ylhbq jp compare?

  Consider two copper wires. One has twice the cross-sectional area of the other5 lfulu.h9mf2jf +p7q. How do the resistanc ulh95p j+uf.2qlfm7fes of these two wires compare?

  Consider two copper wires. One has twice the length and twicertq i/ih0x /a3 the cross-sectional area of the other. How do the resistances of these twor iah3 q/itx0/ wires compare?

  The length of a wire is doubled andxlv(5 f4 u jebly)k.2x6db1sj the radius is doubled. By what factor does the resistance cl 5l(. 6jjuy esk2)bv4xbdf1 xhange?

  How much more resistance does a 1.0 cm dixhe; ozn/ jqwk9488opi6j np *ameter rod have compared to a 2.0 cm diameter rod of the sjp8e 8wxn / qj9no4k ;6z*iophame length and made of the same material?

  The resistivity of most commobun4, 9tq4j wdn metals

  Negative temperature coefficients of resistiu4xy1ae cl -/xefjx+l05v4b t q8 ni1wvity

  What is 1 W equivalent *a 7nld3o0 bj( euwcb7to?

  A kilowatt-hour is ey/z dkhaeer4(91w i/) r*gnph quivalent to

  If the resistance in aoq luv 5k)i ywn16at;- constant voltage circuit is doubled, the power dissipated by that circuit kovqw)na;i 5l 6t-1uywill

  If the voltage across a circuit of constant resistance iukv u4ake86 2is doubled, the power dissipated by that circuit wil uke i2vk4u8a6l

  If the resistance in a circuit with constant curren ks7fwhmt 6cbso;8273eiw9ijt flowing is doubled, the power dissipated by that circj 3scktis269b eimf7w o7h;8wuit will

  If the current flowing through a circuit of constant . *ic7vtya z3bs3 1oe)igfhs6 resistance is doubled, the power dissipated by that circuiti3cvfb6as71 ts zg.*3y)ho ie will

  During a power demand, the voltage output is reduced by 5.0%. By what percent86 sz7aauao 6 ecp;*asage isea86za6a *o;p7causs the power on a resistor affected?

  A current that is sinusoidal with respect to (ibby1x v9 044 hp/w:0disalpe+pzc ktime is referred to as

  Consider two copper wires each carrying a current of 3.upkdy7p 6 tsxz+6336 ef6 m( 0nhym8p,sycjak0 A. One wire has twice the diameter of the other. The ratio of the drift velocity in the smaller 86ksp6e6ykmdpyz(,hpm t f u+0y7ja6 3c3nxsdiameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes n a3mpcy 7+73w lfmlk q2(xl:ressentially zero at very low temperatures are refeycl37 r+:(7f p k l32axmlqnwmrred to as

  What current is flowing if 0.ic:)an e9c9ggspkl6nn d9;-io +h0r f67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes through an electrol6j0)l tmk*qu;bju 7rplating apparatus in 2.0 min. What is the aver blrulju)0jm*;ktq67age current?

  How much charge must pass by a point in 10 s for the current tgxd: rgrf2u,; o 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 ifz yk- r-tk2jfrh h04(de , chfw5.m2vv $4.0 \times 10^{16} \; electrons$ 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 cu64 x/l(y4p6vt3bg)z. i ai sjq.mzsoprrent, has been left on for 10 min. What is the net number of elei.j4isp6ym3pxtq)4 o6b (l vzag.s/z ctrons that have passed through the coffee maker?

  In an electroplating process, it is desired tob(kgaaz;( ap/x3rffe;fxs8 5 k 3j1hbobz :(o 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? (The silver ions arb3fx/k hp13fa;x(orszbk zgao:8 fb5e (;j( a e singly charged, and the atomic weight of silver is 108.)

  What potential difference is required to cause 46wov9 (,tzupi p(p:ch .00 A to flow through a resistance of,o6zi:puhtpp9 wc(( v 330 W?

  What is the voltage ac +br,oz+qo vx9ross a 5.0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is compm0yv+ou v k83hj 5j4nnected across 220 V. What current will flow?

  A light bulb operating at 110 V d() ncgq3 h8pg t7aqwq*cnkt68raws 1.40 A of current. What is its resistance k)p wgqc8cqt a7nt3*qg68hn(?

  A 12-V battery is connected toqwrm(r,8v+xqwy sni;m6 7p lu8 :asbifp,/0s a 100-W resistor. How many electrons flow through w0ml bqsrsy,f8 w(p p :u ix,r8as67i+m/;qvnthe wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter qcwk7n ,e(c.d *rz6 lfvd4z) c0.40 inch? (The resistivity of cop,w*67nz.d(cf 4dvzcqcr )k l eper 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 long, if y,o:4nl,v/)p* ch9av jzqyyxthe resistiny,,x4l/ 9)zqoc yv:ahjy p* vvity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resisz-ki : 9e7uhfitivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistiv mnrn/.ymrhbv48) 4-r zoz 84f/vh4nuxf :oypity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, measures 0.040eg610 ncsz u;;q2d-pis5ju q 3pk r6dc ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius is x7bmr2vaj pd1vy.9-sz9h*lf 0.321 mm) nichrome wire if it is con rbyjfz2- l dpv97vxm9*1ha.s nected 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 crossn5o;q s dovp6uyh/z6: -section, 1.0 cm x 2.0 cm. What is the voltage drop along its length w:u vp6 qnh5 ;s6ooz/ydhen 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 of mikd9l c5ih gng1i103$100 \times 10^{-8} \; \Omega \cdot m$. If the wire carries a current of 0.50 A, what is the voltage across the wire?

  A 1.0-mm diameter copper ,t:6f/munm 9 1 6jovjjmsvv40tg/nnv 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 a resistance of;lo(+.4cgbx1nwpp3hi ; f)-tqntbrj $18 \Omega$ 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 coefficieor/kc- ikya32uu66g hnt 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 used tord0 xmvdmf:y f :ps036lyt)+q determine the melting point of indium. The resistance of the platinum w:yl fmx q r)v fyt0dds+p0:36mire 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 :fpyyw+q 56iq$10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current will it drawjnfdyuql3y a ;;1ck1/?

  A 150-W light bulb running on 110 V draws how much a*985z /npbnx:n yjl scurrent?

  What is the nominal resistance of a 1t:ogq7j m-1t*8jsx xv w1yfc6a /7duv00-W light bulb designed to be used in a 12sv /1jtcyqo7vx-6fw1u *a 7j8mt : dxg0-V circuit?

  A toaster is rated 800 W at 120 V. What is the* r) c7ag:vwui 4uz6vc resistance of its heating element?vcg 467 vurwac:*iu z)

  A 200-W resistor is rated dv, 7 w,dqe/xnc; *(xq cwk+hgat $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is r g6ebo 0,xc7wlated at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what current does *8bx s:/r klbqit draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, what is its resistag7 ok8tzb y:ah 6*a9tdnce?

  A 25-W soldering iron runs on 110 V. What is its 5 yra 0lau14)esjz-m xresistance?

  How much does it cost to operate a 25rwie-. gf)..lrm hh7u-W soldering iron for 8.0 hours, if energy costs .rh). w-f7 ihmguer .l$0.08/kWh?

  How much energy does a nn6k i+ u)wtb(100-W light bulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How 0tj1s-z yk r1nn g7f75t.sieymuch heat energy is produc7grst10z 1y 7fnkjnie .5s -tyed?

  A battery is rated at 12 V and 160 A-h. +qp 24jgf/cb5idxr;r z+n;a uHow much energy does the battery store?;bxrizqgpaj2;+ cfdr/ 4+ u5n

  How much energy does a 25-W soldering iron use itwz4 6d6mm0f5-z ;y; qt gxypqn 8.0 hours?

  A 100-W driveway light bulb is onytm 2s0;n pgnl;(k8t16clvhl 10 hours per day. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost to operate th1ptk g(v60t;ls2mcn n y;ll8h e bulb.

  A 400-W computer (compuu*w; t/snzi(gter plus monitor) is turned on 8.0 hours per day. If electricity costs 10 cents per kWh, how much does it cost to run the computer annually?g/t(i uw; s*zn

  The monthly (30 days) electric bill included the cost of runnin8py; 9+khk le8q25qj w2nm , vkpue- yqbhb7r4g a central air-con8 5 m k8nb2l p4pbe7y;h 2 hrk,q9-qveqyujkw+ditioning 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 240 V and ge *i.k)axgweju9yns*:nerates 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 temperature.) What effect will the repair have on the power dijeakiuxy* .*: 9sn)gw ssipated in the heating element?

  14 A of current flows through )uhir n t 2k*zq4,ul.yw4h2nt $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costt;tj/;d9ruo as $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.pkex- 30g-u9b1fjix 42d yaut How much current does it draw from a 120-V line? x y -e1uia29 udbxf3k40g-pt j ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power sozajj ,dx fk1-.urce. What rms current flows through this dev kjxd-az1. jf,ice?

  A 500-W device is connecz:eo) e/iaxsyen : n-+ted to a 120-V ac power source. What peak current flows through this dev): i s-:enye+/ezxnoaice?

  A 500-W device is connected to a 120-V ac power sourc9ic r6x4f/whtr q8 +ak 8kf/yze. What is the peak voltage across thirkkqi4yzwra8/ hfx + /t8cf96s device?

  The diameter of a coppers1)bn9xrdij (5fgp exil,i5x0kv 2h ( 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 electron carriers in one cubic centimeter of co9i lj h20b se 1ivrnx5()gxd,fp5k(x ipper is $8.5 \times 10^{22}$.)