A device that produces electricity by transforming chemical energy into-f shgtr3rtf98st ; p1 electrical esrp t -g;h3ff1 8s9rttnergy is called a

  A car battery

  The total amount of charge that passes through a wire's full cross sectiov.p)1mlvceqe/e c m61 n at any point pevm.1p e m l6ec)1q/vcer unit of time is referred to as

  The direction of convention current is taken to t); w0 ;ljec o/ nyxivh)r 7;l3h,nubhwh15bibe the direction that

  A coulomb per second is the r1r ;cti7tooicae8 .3rakj74 same as

  Car batteries are rated in "amp-hours.yt815kv r elee)vrdw f +dhdw4),*mc*" This is a measure of their

  The resistance of a wire is p-jr)ufojui q2.csv v m-tb0tc-*40 xgz8 tj +defined as

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

  The resistance of a wire 6m;4ejlx tu*eb(ue: dis

  The resistivity of a wire dey4i/ hu*n+wa7 )jox:xsk 2cxbpends on

  Which conducting material has the lowest resistivity val,avex 7f bt53tpq-d 4mpyl3e 8ue?

  Consider two copper wires. One has twice the length of the other. How dayq.p lv.z yr3t ;o5sie5;l .so the resistivities of these two wires comptis .l. o;rea5 .5lspq 3zy;vyare?

  Consider two copper wires. One has twice the length of the other. Hoa:6uh0vaosr l3wcys; 0cl f(5tgh;. uw do the resistances of these two wires compare?lfwhvoc c.(53 0ray;l 0 ;ugs6sah:u t

  Consider two copper wires. One has twice the cross-sectional area ofcn o9ogj1ui g9ht2m14rf-xp 2 the other. How do the resistances of these two wires compu99g 1pjh 2ix-2no g1r t4comfare?

  Consider two copper wires. One has twice the lengjcirnv5 3ai7+iuo a5wi8 :t *yth and twice the cross-sectional area of the other. How do the res *7i:ioni + vr3uj5ayt ac85wiistances of these two wires compare?

  The length of a wire is doubled and the radius is doubled. w (9-q 6pfken0 ndei-hzsbv. -By what factor does the resistance chan9p n b- zsk.-wh0e(fvqd -6ienge?

  How much more resistance does abl; cf l.9 za cvtpunemnb39;9/+u x9e 1.0 cm diameter rod have compared to a 2.0 cm diameter rod of themu9t; ll +pnv cx9u czen9fb.b/9;e3a same length and made of the same material?

  The resistivity of mo diarc)u*7auxlgw83 d(snx; 8st common metals

  Negative temperature coeffiby +oo2:)bz cqg1 7kth-at)a mcients of resistivity

  What is 1 W equivalelzr .b onrwrdil.; 9--nt to?

  A kilowatt-hour is equivalent to y0kum*jxh5--ozp 8,byim.dut kv .i ;

  If the resistance in a constant voltage circuit ieor c-qef)5r /s doubled, the power dissipated by that circuitf 5 oc-eqe/r)r will

  If the voltage across a circuit of c 3 *sr qrnhzr7zp/ vv:bs+a6n- cba6/wonstant resistance is doubled, the power dissipated by that *7c/vnv q6rwph/3s r6as+zzr bb:-n acircuit will

  If the resistance in a circuit with constant current flo r ) 1k0 wmfnhmfed/)fu cauelo8+0:8twing is doubled, the power dissipated bf0au08e) f 1w 8 fmu/:lkdmenhc +to)ry that circuit will

  If the current flowing through a circuit of co6kin o) glnf1)7mpzzc7b 78 gdnstant resistance is doubled, the dpm6 zg8fz) gn1o)ibc7nl7k7power dissipated by that circuit will

  During a power demand, the voltage output is reduced by 5.0%jyp) j7. zcrm68h+k5h ;haq ia. By what percentage is the h5 zqip 7ha).;rk+j 6h yj8amcpower on a resistor affected?

  A current that is sinusoidal with respect to time is referred to asl lw:-5btv/m m(q1ayf

  Consider two copper wires ea gsid n 7xzc960eyztt)ukwzz6+1 /c r,ch carrying a current of 3.0 A. One wire has twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to that in the larger diameter w91t,u+xrctgwk ez0cz /z zns7dy)6 6iire is

  Materials in which the resistivity becomes esse kn wedl8co) x32uq.vw0 frx9l1c8ox(sg6 /fkntially zero at very low temperaturlkx)9rnfelf3wdu 1x8/wov(ok0sqc . xc g86 2es are referred to as

  What current is flowing if 0.67 C of charge pass)-te ai6hedk a.6nu3 c a point in 0.30 s?

  A charge of 12 C passes through an electroplating appax4ngt3 b- x/np ew8q/cratus in 2.0 min. What is the avertcg xpw-/ nn8beq3x4 /age current?

  How much charge must pass by a point in 10 s for the currentw)oa hgwr0cmeyfm1 7 3gl(p*8 , liw+g 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 if hjna7 6x( ;hjy$4.0 \times 10^{16} \; electrons$ 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 been left on for 10 min. (g7jm x bf/vjpm.c-. g What is th/g-7j.jmgm p.v xfc b(e net number of electrons that have passed through the coffee maker?

  In an electroplating process, it is desired to deposit 40 mg of silver on a -f9 qxc;cm j a-nsg:t,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 are singly charged, and the atomic weight of silver ismxnc :t;j9 qfc -a-,gs 108.)

  What potential difference is required to cause 4.00 A to flow throu2fm(m ldo e+q*gh a resistance of 330ef2+d*q lmmo( W?

  What is the voltage across a.tq2ujve4s k . 5.0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What curren v77(:eibpnogix; p/ ut will flow?

  A light bulb operating at 110 V draws 1.40 it+p5e 14 d-o6ux ugmhA of current. What is its resistance? p4tdu-x+o 6 gemhu15i

  A 12-V battery is connslz, ez.mwc ;3ected to a 100-W resistor. How many electrons flow through the ws lm,.;c3z zewire in
1.0 min?

  What is the resistance of 1.0 m:1lenuznlu jf47g3y-q ;cc4a wq.d k3 copper wire of diameter 0.40 inch? (The resistivity of cc1keu4. y-uq:73 qfa4ncz gllj;w3nd opper 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 3fk. vbs;;oi qlong, if the resisq svbfio k3;;.tivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of coppe )o,m;t gyrvz:r wire (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 (resis3 eoowni /.4, ,,z wnokkl-restivity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 resistivity7z,7 j,coj;tpu5dsb u?

  Calculate the current through a 10.0-m long 22 zv0u ql(/n gj 0vnq,*7 e,aywngauge (the radius is 0.321 mm) nichrome wir ,ywv naqnq/vz(0g 0jn,7elu*e if it is connected 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)mduelhm 1 4mgq:;iw-b2k 3qz+ e/7 f5fdwlud and of rectangular cross-section, 1.0 cm x 2.0 cm. What is the vog7u+qzfhqwm3; i1 edl4l de:2m-b/wm5 f)dukltage 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 resistivityf 3+ l)nptdd/p) jnd,q 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 (resistivmvp,s)cg4/;ra,sd:)ieq unh ity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resistanevmae-zs)m5f ,+r u)bce 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 q 47diim*)lgrresistivity 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 povyu. pw4k iw(8int of indium. The resistance of the platinum wireukv8p iy 4(.ww 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 throu22 m i5.inlfzq(yr eu-gh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current will it dra 1iuh6)dnq xxo2+y 9 zz/m*:r;ukbimrw?

  A 150-W light bulb running03guc;gox 7w r on 110 V draws how much current?

  What is the nominal resistance of a 100-W m xnf12-a89her1v cs hlight bulb designed to be used in a 120-V cx9 -r8 echnmvahfs1 21ircuit?

  A toaster is rated 800 W at 120 V. What is the resistanbke86ex8 n9x e,br+cxce of its heating elemen,k6b889rxbeex+cx ne t?

  A 200-W resistor is ra;e2lw9nbdw6ev72ntkjrcly 408 ;pi nted at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is 63isxk(:uvu grated 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 it draw?fdc har6/(z6oov:g w*

  A lamp uses a 150-W bulb. If it is used at 120 V, what is its resista- )y tq2pb+qbunce?

  A 25-W soldering irojk 9tzr c8-sz5h us47vn runs on 110 V. What is its resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0 hour+wnv30k rjqw( 9w0 qlvs, if energy costrv39 + jknwv(w0 wql0qs $0.08/kWh?

  How much energy does a 100-W light bulb 4 thqpj/gq5a*2,w:i 0uwb2zhk b2 y dnuse in 8.0 hours?

  A 1500-W heater is connected to aexn:u gw,53qj 120-V line for 2.0 hours. How much heat energy is proqn ,eu3jw:x 5gduced?

  A battery is rated at 12 V and 160 A-h. Howtfm p hc7m 6 -v(9x3l6ozwzl(c much energy does the battery store? 9pf3lmc-( lx(tzvc667hmz wo

  How much energy does a 25-Wp+ lxceyggs85 (:k-ct soldering iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per (4ad ra 6d hl1tjg wdv0k63z+yday. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, ydhaj 1k0 d4l+zgd6( w6tr va3estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on49zp qqogvuhs9 f;)y3 8.0 hours per day. If electricity costs 10 cents per kWh, how much do3;s9zh ofv9 u4qyg)q pes it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of running a central anlx9 smj1- uw)a-e vg;ir-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. How much did these items contribute to the cost of the monthly elect wn a-1xjsu;gm evl9)-ric bill if electricity costs 8.0 cents per kWh?

  The heating element in an electric drier opnqf( hce6u3 6 iis9bkrsvf2:3)uo,ss erates 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 resistivity of the wire will depend on its temperature.) What effect will the repair h ):ifkro3u, es s3 cisqb(h6u s6fv92nave on the power dissipated in the heating element?

  14 A of current flows t:rbj37kkkrmc5 y90 blhrough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costnsmqv . v3,8hfb+r; hzs $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. How (,7nr0 *v pdejz,iaez much current does it draw from a 120-V n(pi 0* ,7edra,ezvjzline? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power sourc-knxa8 x2frn2co2 t 6we. What rms current flows through th xtfka-c w26rx282n onis device?

  A 500-W device is connected to a 120-Vxj(tirfh vj,z *)n1:b ac power source. What peak current flows through this devi *,it nx1b)j( hfjv:rzce?

  A 500-W device is connected to a 120-V ac power source.-d 4xvcu vi4u8 What is the peak voltage across cv-4 dux 4u8vithis device?

  The diameter of a copper wire is 0.081 ing6wrh4, u 9hn-p ptzl(ch. The maximum safe current it can carry (in order to prevent fire danger in building construction) is 20 A. At this current, what iuwp-rg t9hnh46z p, l(s the drift velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)