A device that produces electricity by transforming chem:xln+v t. f)q ixr;s b8ofsv9.ical energy into electrical energy :ss9tx;fb.rvl8n ox+.)q vif is called a

  A car battery

  The total amount of charge that passes through a wire's full cross section at zrjk)gko)b0pajv 1v/t*xep+ 3; . j meany pb)pv *mpzkx/e g e)j+.a031vko; r jtjoint per unit of time is referred to as

  The direction of convention current is taken to be the dibza:-s, nq ,ihrection that

  A coulomb per second is l4hiylwsqi*)ucy 4a**k4r6ythe same as

  Car batteries are rated in "amp-hours." This is afv4un- rxf cuz m gt 8.(s/c8s/15kmvx measure of their

  The resistance of a wire ih:8f2y w iy6qks defined as

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

  The resistance of a wirezdo: n2 gbc10draz;m: is

  The resistivity of a4w1sgk -xh mu( wire depends on

  Which conducting material has the lowest resistivity va d-z1dwz5apyjj7n -3 rlue?

  Consider two copper wires. One has twice the leng w5pgqm2c g,(/2chaze th of the other. How do the resistivities of thesz,c2g/(2h mcewqap g5e two wires compare?

  Consider two copper wires. One has twice the length of the qt5 wvkh7uf3l svo.ph55*zqdj xr1 99other. How do the resistances of these two wires compar*9h7j9 okh w5p 5q3xftz.srv1u v dlq5e?

  Consider two copper wirespas xk+:c1/f +wsha7tgoabd21 cf1 6o. One has twice the cross-sectional area of the other. How do the resistances1okopd/:2s1 fbc7x6tahs g + a+caf 1w of these two wires compare?

  Consider two copper wires. One has twice the length and twice the cross-sectionmqfi;k us3xf *o-2 2bnal area of the other.f;2nio*fs-x u kq 3b2m How do the resistances of these two wires compare?

  The length of a wire is doubled and the radius is doubled. By wh-r,xmo- r(ug*gz:sba at factor does the resistanc: rx-bg(-g,*m urzsoae change?

  How much more resistance does a 1.0 cm dgk -hm++ z9cwrvki389zk. x rziameter rod have compared to a 2.0 cm diameter rod of the same length and made of thz9kikk3+.z-cv9 x r+g z m8whre same material?

  The resistivity of most c b*-: e/qns ,hghejfe/ommon metals

  Negative temperature coefficients of9cspro 5m*(ma resistivity

  What is 1 W equivalent towixv i 2k6+/td?

  A kilowatt-hour is equivale.kx5046s9 u2x vuot+u,rpfqq1bd8j cc o y4tunt to

  If the resistance in a constant voltage circuit is doubled, the yvdhc5)phg6w d .56hgpower dissipatedgdpyc5whh 6gdvh5 .)6 by that circuit will

  If the voltage across a circuit of constant resistance is doubled, the power d f ;hve3ewy srjrc6 4lh48q((gissipated byr(6f4w hy8 e3evr l;j4cqs hg( that circuit will

  If the resistance in a circuit with constant current flowi k8y e90v41mdsfd7kx ung is doubled, the poweskd90df k81v4 euym7xr dissipated by that circuit will

  If the current flowing through a circuit of constant resistance is doubled,qha l*/*xo r4c the power dissipated by that circuit w4a/*rhqc*oxl ill

  During a power demand, the voltage output is reduced by 5.0%. By what percentabpi3s(j4;+wcn jtzk:j j: 2k :yoi6wh5spx l8 ge is the power on a resistor affectec ip3t(6bk5h:zsy;jpj :w x+8ls2wjo i:n k4jd?

  A current that is sinusoidal with respect to timehqn kk;2wbuh1 46omy f6c33qv7nmic2 is referred to as

  Consider two copper wires each carrying a current of 3.0 A. One wire has twice 5gxur:*1pees7t 7k ql the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to that in the larger diameqrk7*e l1gsep:5tu7 xter wire is

  Materials in which the resistivity becomq1h,:pzlb0zv3xx - l pes essentially zero at very low temperatq l:,bzzlp0 1-xph xv3ures are referred to as

  What current is flowing if 0.67 C of charge xlc jlw e9ds,u qxu)f0f+) o2+pass a point in 0.30 s?

  A charge of 12 C passes through )u(h v4tfkeo+ an electroplating apparatus in 2.0 min. What is(uk)h+vo f et4 the average current?

  How much charge must pass by a point in 10 s for the current toqz/y 5ij s)oq8wbsjs(0w0; y q 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 ijz;ma8pc 8 r r*rd-+uvf $4.0 \times 10^{16} \; electrons$ 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.ig3p ,rn-m l puh16/sy What is the net number of electrons that have passed through the coffi/-31lpy mrp snh 6u,gee maker?

  In an electroplating process, it is desired to ddy9ze ;t1ox 1co9fth9 eposit 40 mg of silver on a metal part by usin11ytxc9 e9tzfd o;ho9g 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 is 108.)

  What potential difference is required to cause 4.00 A to flow through a resistan oij u:v544k6adkz k:wce of od 5zvukiaj4: w:k 46k330 W?

  What is the voltage acrossiit20f: s a+x21 mypxf a 5.0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is connected acrpgst 4ezler-0qa-b q0a; f.w7oss 220 V. What current will flow?

  A light bulb operating at 110 V draws 1.40 A of current. What is its resisl.-io(-qb)d r*q:hc .rhof qq tance?d h.qb rio-f).o-c :qrhlq(q *

  A 12-V battery is connected to a 100-W resistor. rqyw( 4l*qn+o How many electrons flow through the wo (qn* +w4qyrlire in
1.0 min?

  What is the resistance of 1jbngs.b8. v,j.0 m copper wire of diameter 0.40 inch? (The resistivity of co8.bvn, sbgj.j pper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 i9smmk(v0vl1 cm in diameter and 45 m long, if theklvv m9i1 s0m( resistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wibvt q s(lz5f i;scw*0,re (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 (resistivis,8j-id raan7 b2*bpuvz5 - mrty $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, measureuk tn)-35s*il t e9n; ) 67pdebsxvjhws 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m 2y at)r jq1vr7long 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. (The resistivity1)jqar27 vtry of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cross-sectionb0a, cdvh)o1z11 vqg1f jij(j, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it chj,)vz 1 f (qiv10g1bcjo1djaarries 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 r:(jhq+nwg0 ol6m8wct:3dc oand 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 coppeswg7c vaml)xeuh/ (;5tb 0 pa,r 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 resis4 5ofnvo27o6s:jhq abtance 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 coefficienmwv1f q/q63+kmin+(vvc ts-d t 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 to determine tg5cxa 9sah,b+jxuly k8v*c:; he melting point of indium. The resistance of +vcgx 85lx*s jauhc:b ka 9y;,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 ankxcm:a004e;sho 4.fdxc,sj g8qyy 6v $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current will it drxq,sy ga:g -s/aw?

  A 150-W light bulb running on 110 V w)h4v5 snr*w(cv nr0cdraws how much current?

  What is the nominal resistance mg sdw1f*guz*fjte7z0c2 yobr 0 +1k xko;8- wof a 100-W light bulb designed to be used in a 120-V circw7zt djky;*fk 0s1 f1z0g2r 8ogu m -bo+c*xewuit?

  A toaster is rated 800 W at 120 V. nd68j ,k,nhyqn h(d;if iz/fu.8 fkx3What is the resistance of its heating elemenfz8y (kjin3 8fknfn,;u/qxi6h, d.d ht?

  A 200-W resistor is nvdkgayh,,44m7 sv 1spjvz )8rated at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated 3y 5x ae :k:ud;r,xmhuat $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W +-/nysyyh by3 /k:j wjbulb. If it is used at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, what is its resis lsx6t6.+ko8qgcusll)e* k: ctance?

  A 25-W soldering iron rscven 0cu 2n23uns on 110 V. What is its resistance?

  How much does it cost to operateq6 3 7coivwl:kpzc/-x2; k8dnb7c; l , kwjtya a 25-W soldering iron for 8.0 hours, if energy clw-ibjc7k6 yz a,ko2;wn3tk;v q8cc:x 7d/p losts $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 hac7*8 fs6ufno ,:mkusf*n 7z kours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. Howxkged9 : c7g)si 2gaq, much heat energgg79,k)qxi a g :2sdcey is produced?

  A battery is rated at 12 V and 160 A-h. y:pcuw;tv1gcvl m +/4 How much energy does the battery store?vcu4wyl;tm +:v p/1gc

  How much energy does a 25-W soldering iron use in wutp, m +owpywfgd11403 r4ri8.0 hours?

  A 100-W driveway light)5m-dt5+ kqu5m0 ukz qxqxe v1 bulb is on 10 hours per day. Assuming the power company charges 10 cents for each kilowuvd5uqtz5 x)-xekqqm1 +k5m 0att-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hour:lpu*+/ kktp ys per day. If electriy/k:t*pl u+pkcity costs 10 cents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill includeo ) wah5d1 rw wro/45n:fy 8wyw2w/nuxd 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. How much did these items contribute to the cost of the monthly ele w1hnw5r ua):wnwoyod8/r/ 5f x2w4yw ctric bill if electricity costs 8.0 cents per kWh?

  The heating element l.-:- kedir kz s8 24cers:nsy7vi5lain an electric drier operates 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 dezesserys ac 4v 8 ldiilk-572r-nk:.:pend on its temperature.) What effect will the repair have on the power dissipated in the heating element?

  14 A of current flows througr;)f9j8o epmfcp9i-m h $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs pcza/w:g 4 6ar f-j9fe5h5b hi$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. u)eid :h9cow r2u0hr7 How much current does it draw from a 12)r7d29hei cohu:0ru w 0-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is copi on/l)d *hh0 q(b9p3a9a7c w 5poempnnected to a 120-V ac power source. What rms current flows through this device?hlad3 b epmpohc / 9pop7w a()05i*9nq

  A 500-W device is connected to a 120-V ac power9brze+:)mk vhxsbh(f)e5w;m source. What peak current flows through thbkw)x;)e5mvs9fehz b m(:rh+ is device?

  A 500-W device is connected to a 120-V ac power source. What is the peak 5+daw5 lca a x1wfsyhens)./2 voltage across thiha y)weld x . aa+cw5/s12n5sfs device?

  The diameter of a copper wire is 0.08)jh)cplf8 fc9h; hzn 8zj4-equ)c q:j1 inch. The maximum safe current it can cacj hqfq;j-c8j:l8 )h c9ezz f )nphu4)rry (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 copper is $8.5 \times 10^{22}$.)