A device that produces electricity by transforming chemical energy into :m m-golnz+i: electrical energn: m+ mi:gz-loy is called a

  A car battery

  The total amount of charge that passes through a wi5vdce2jo snb-k24*cg0n an6w re's full cross section at any point per unit of tnccj0oea25kn*6s4gbn 2w dv- ime is referred to as

  The direction of convention current is take08oih rz 3o//frx k/hin to be the direction that

  A coulomb per second is the same ag 4yx*)w9v/wr:qmi1f3qnd b ks

  Car batteries are rated in "amp-hours." This8bqjqg x;*b- 1dtql n( is a measure of their

  The resistance of a wire is defimwd)ywg po 3+ wt9.z9gned as

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

  The resistance of a w.xbz(1z c 2v3jocrng 7ire is

  The resistivity of a wire dept:q,i ,r7 q2zokhfyi35mfz5w - bp3biends on

  Which conducting material has l ld76y;eh0fyvdw 3u , zc*+kethe lowest resistivity value?

  Consider two copper wires. One has twice t;f: 4 r1qn.(ersqav8x y nlkv-he length of the other. How do the resistivities of these two wir .8rf(vv:na els;xn 4rq1 k-qyes compare?

  Consider two copper wires. Oneene ll*- 2i*ket0 kn6jnm99,r/epw mb has twice the length of the other. How do the resistances of these two wires cokej /e,enpm * l2nwme9 6tnr- b0*9lkimpare?

  Consider two copper wires. One has(k ;tqigy 0qc8 ;:rzqn twice the cross-sectional area of the other. :itkgc;n(r0 ;q 8qyzq How do the resistances of these two wires compare?

  Consider two copper wires. One has twix*;. a6zchd zice the length and twice the cross-sectional area of the other. How do the resistances of these two wires compic xa6;*zhz d.are?

  The length of a wire is doubled and the radius is doublejrtm cif /qw2h7a f1tvoq 0:)2d. By what factor does the resrqq2jo/it0hva:wtf2m 7) 1cf istance change?

  How much more resistance does a 1.0 cm diameter rod have cof0xfe8wxx9m7 +e a2 qhmpared to a 2.0 cm diameter rod of the same length and made of xfxahw x7 e 8q9mf20e+the same material?

  The resistivity of m q b2z(u kdi2*vpw kly6*orj8h 2d)o3dost common metals

  Negative temperature coefficients ofu * jggz80hkr+ resistivity

  What is 1 W equivalent to veklfal,u8) fe aw,96?

  A kilowatt-hour is efvhs;9y+a s 7n+ 3rmsckuol/: quivalent to

  If the resistance in a constn(n4 ,9qh2 pijm+ fpxsant voltage circuit is doubled, the power dissipated by that circuit wilqipj(+sf29 ,nmh4x n pl

  If the voltage across a circuit of constant resistxc-j+*kn/-). mojme6umhu dg ance is doubled, the power dissipated by that circuit o m j .xm-e-ud*ugcmn/j+k 6h)will

  If the resistance in a circuit with consv(a+ j5 t7ulnb5x2q owtant current flowing is doubled, the power dissipated b(25axt57v woqln jbu+ y that circuit will

  If the current flowing through a ciru2u y:m;zo 5*nq e 7kyd :jbt(c-skt/hcuit of constant resistance is doubled, the power dissipated y:j:shc;-k(dtz5n7 2uuqy k t/embo *by that circuit will

  During a power demandpg03q9 fwo)ej, the voltage output is reduced by 5.0%. By what percentage i p0j3qf)eowg9 s the power on a resistor affected?

  A current that is sinusoidal with respect to time is rkg312rq.. b gpjr3 hk3nj,judeferred to as

  Consider two copper wires each carrying a current of 3n09m fz(o+3uq r)hubb .0 A. One wire has twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wiboz 3h+0f )9r(uqbmu nre to that in the larger diameter wire is

  Materials in which the resislj-1o *:ob abstivity becomes essentially zero at very low temperatures are reo sb1 -jbao:*lferred to as

  What current is flowing if 0.67 C of charge pass a pd;71lt q6;*rl bu) fsl ew9kipoint in 0.30 s?

  A charge of 12 C passk qco(h,7o z.g)m:a: gg lsu /1o(9seoetx/g les through an electroplating apparatus in 2.0 min. What is thoxe.1sgoqga)m ouk9 co,:ehlt(: lg s/7 /z(g e average current?

  How much charge must pass by a point in 10 s for the current t96y/m;nqnra w 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 flow ck fe9ml6 n*0/r1qskting 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 13m;30pwqk6 p eaxp pzwei(r,5j-miu34 .5 A of current, has been left on for 10 min. What is the net number of electrons that have passed tm;aek,e x-3m46wrjiu iz p w30p(qp 5phrough the coffee maker?

  In an electroplating process, it is desired to deposit 49s 98dolb1 1nhac/1jzaim/ qy 0 mg of silver on a metal part by using a current of 2.0 A. How long must the curr/1qnm ila9/8 hdcbzy11joa9s ent 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 cau *xyax8d6-blr:ngt y: iwx /1qse 4.00 A to flow through a resistanb1n:/d y *xxl x6a8y-:gqriwt ce of 330 W?

  What is the voltage across a 5.0-W resistor if the current through itc:yyf 2fvu8oqk )8 7nzkku)8d is 5.0 A?

  A 4000-W resistor is connected across 220 V. What current duobcxxt 208oj od k-c5 5g.yzu6-t:ewill flow?

  A light bulb operating at 110 V draws 1.40 A of current. What is its resc bt48j7j ;zirs a,hg3x-*dfn istance?ni;gfrd-3 zx4jb7 c*tha,js 8

  A 12-V battery is connected to a 100-W resistor. How many electrons flow thrzzd;(oc-9 d1 mysh4tpough the wirem zh;4cs9 (1pty-zdo d in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? (hx im7 x,nd4g+The resistivity h,nx7+mgxi d4of copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular ro7fu* a7bydjbt5ue 6 +p thp30sd 1.0 cm in diameter and 45 m long, if thybbp u57d7 t spu0 tf+h6*aje3e resistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resistivibu:- wlsvrfb46 7j u4kty $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resilz/tl;-5b6i,8. vubfqaqnw s stivity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, measures 0wn, f (it8:ymmwinv;/d)bzj 6.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radi 6yxh-n fzqb;w fhm-8f-a*u0 cus is 0.321 mm) nichrome wire if it is connected to a 12.0-V batterwm0c au6 ;f8bh hyfqnx---*fzy. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 2bsxxqhhoe(tm90) *h +j24s d s0 cm long and of rectangular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (The resistivity of copper is oes 0jshd4h(*xtb9 q) h2+smx $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire has a radius of 0.50 mm and a resistivity 8r+(sp8qpfz n zbi4b o7d9qb (:kyy/vof $100 \times 10^{-8} \; \Omega \cdot m$. If the wire carries a current of 0.50 A, what is the voltage across the wire?

  A 1.0-mm diameter copper w*rnhy p3f;h a5hym30jire (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 resi lr31m6magnljr, n1xf4e z5 gdr9f:5ystance 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 of platinseuynm:w;6f2- es0 q9o;tyv pum 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 me7-u/fckf y:p,vgy- vj lting point of indium. The resistance jy/-u7 vcf p,fyk:vg-of the platinum 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 o,i7w jn )cwrl18so: v$10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current wilu; wp3x)plh si0q)7*kuwv ( htl it draw?

  A 150-W light bulb running on 110 V drawseq/ tqdo81( j-m,eln* hhc9j v how much current?

  What is the nominal resistance of a 100-W light bulb despe75( p/cvgdo;q f4ez) n ,9bu1fb5nr8gfl waigned to be used in a 120-ql1nd/ g 5)p7 ;ezb8fbe4(5pnufcw 9,garovf V circuit?

  A toaster is rated 800 W at 12hd4ff7c-p( c l t/yy6b0 V. What is the resistance of its heating element(l4-f6 yb phfc/y7dct?

  A 200-W resistor is rated amamw (ip; md9:t $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rao,rf1wl--0: ;xnl2 efl lsbslted 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 does9x-xaayl t-uu -y*+cx it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, p,a-d /;3jblp+emgr1 at /hidwhat is its resistance?

  A 25-W soldering iron runs on 110 V. What is its resistance6 c pr0iu8dh;y?

  How much does it cost to operate a 25-W soldering iron fof*.q1f*c52il rv:r j kl bz-yur 8.0 hours, if energy costfrbcul *lq 2-1kf vrj 5.*iyz:s $0.08/kWh?

  How much energy doesqs.cl87nat jvo mpt6f*k52j - a 100-W light bulb use in 8.0 hours?

  A 1500-W heater is connect5 xmur crgql a /9nvxu5b0d5/,ed to a 120-V line for 2.0 hours. How much heat energy is producednr9v/r5cx5bx 0/uq uglad m 5,?

  A battery is rated at 12 V and 160 A-h. How much energy does the batteridl -s2;/fua hy store?uhdal/-;ifs 2

  How much energy does a 25-W soldering ir; 1t264jhth dsxxbjv2z tvi+7on use in 8.0 hours?

  A 100-W driveway ligca+m8 ak9soe +ht bulb is on 10 hours per day. Assuming the power company charges 10 cents for each kilowatt-hour 8a+9c +amksoe 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. If ny,if*r:a62uvb;as)kbkz/r electricity costs 10 cents per kWh, how much does it cost to /z:ru2,rvyf *a; )abskb6 knirun the computer annually?

  The monthly (30 days) electric bill included the cost of running a central air-.gwxy5 y+ec2uconditioning 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 electri e52yxwy +ug.cc bill if electricity costs 8.0 cents per kWh?

  The heating element in an electric drier operates on 240 V and -qoart gc0m14generates heat at the rate of 2.1 kW. The heating element shorts out and, in repairing it, the owner shortens the Nichrome wire 4-1 amr0oqtcg 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 throuau qcx 15lyyc.rgwcc -+g,5s 7gh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs 7,qx yuw+v1 rc c/e6ww$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% effxkds 7k(dzf3 *: :ihfyiciency. How much current does it draw from a 120-(7fyx di3* :dk hs:kfzV line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rms curre wlo8-dtp: jv /nmr3z*nt flows *vnot8 3-mw/zjpl d:rthrough this device?

  A 500-W device is connected to a 120-V ac power source. What peak curre(h o -ff7owf1int flows through tof(-7hfi 1w fohis device?

  A 500-W device is connected to a 120-V ac power source. What is the peak volqae3e : 1e5os4wgn9.h.j3a (p vaext dtage across ean we 39esjp . q4h(egda1o ax:5t3v.this device?

  The diameter of a copper wire is 0.081 inch. Theb ). jii 4smlpl.igt5/xz 7enu-yn, :q 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 /nzb )ei 7igmqul,:-jl p..xn4tyi 5scopper is $8.5 \times 10^{22}$.)