A device that produces electricity by transformtf60biv4a dc ro )+mp:ing chemical energy into electrical energy is called ra +topvdi):064mbc fa

  A car battery

  The total amount of charge that p1.9n rnhjkr.nasses through a wire's full cross section at any point perkh.rnnr 1.j9n unit of time is referred to as

  The direction of convention current is taken to be the direction thatrojd 6,3ts56v yq+p4 eyr0 d2v zneq4h

  A coulomb per second i l43hbd0ti p yxwohg2;87)ykps the same as

  Car batteries are rated in "amp-hours." This is a vtmh8i 8:zq:6gpme. y measure of their

  The resistance of a wire is dq))d-a*mr nwtp ky7x1efined as

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

  The resistance of a wire isn0;ltyk r p5x*zo.y9-xzn 4uw

  The resistivity of a wire deu 48q.4stpi6ecq 3n (1a,l gel(qjifgpends on

  Which conducting material 0zkdhwf-j3yy-zzhy0.yyt 8pzi 38kgue89z 9 has the lowest resistivity value?

  Consider two copper w bhh1e-f7fta8p 63hjm ires. One has twice the length of the other. How do the resistivities of hfef a7h1tm8 6-h bjp3these two wires compare?

  Consider two copper w xk4:s5lcwvx5k+k :n ) bma+hsires. One has twice the length of the other. How do the resistances of these t +xxhsv: ) kwlcm kbsk5+:an54wo wires compare?

  Consider two copper wirhgjcks. o c711/x t-ates. One has twice the cross-sectional area of the other. How do the resistances of these two wires compare1ot -gtcax1s /hk.c 7j?

  Consider two copper wires. One has twice the length and twice the crooor/nbv:jci9- -k wpht 77f/dss-sectional o/f9 or7c - dtb/ip7hnjvk:w-area of the other. How do the resistances of these two wires compare?

  The length of a wire is doubled and the radius is doubled. By what factor do.ik; *lx5/a5lt jahnsar5 vo 1es the resistanc. ;ht5o/ j5lla asnr*kx vi1a5e change?

  How much more resistance does a 1.0 cm diameter roi0tz 0c2ebl7fh gy).*l uy u3yd have compared to a 2.0 cm diameter rod of the samlby*yc2l.i 7) eu zhfuyg0t 03e length and made of the same material?

  The resistivity of most common metaltrm: xs:f)/+vcsq0 llq:all 3a) uef-s

  Negative temperature coefficients of resistivityoottaod8 1b6 n5ei.m3

  What is 1 W equivalent -o( wnghb0y7 uto?

  A kilowatt-hour is equival;ukh ve -12+2cl yuuokent to

  If the resistance inx7w-lp d./oy4fqmbp7k * f2st a constant voltage circuit is doubled, the power dissipated by tha7pw-f/kq*2o47psxtml y. bf dt circuit will

  If the voltage across a circuit of constant resistance 3yfcvq ez97e)bx w-j -is doubled, the power dissipated by that circuit webz3c- vj-wyxef7) q 9ill

  If the resistance in a circuit with constant current flowing is doubled, the powb v1c9itv z7y7 :nzwx*er dissipated z: y1b9vt7n*xw cvzi7by that circuit will

  If the current flowing through ai t c i,n) 7jtatwpe2:0j2al4m circuit of constant resistance is doubled, the power dissipated by thattpjen4tt: 2j)cawa0 li 27 m,i circuit will

  During a power demand, the voltage output is reduced by 5.0%. By what per/mk. x) qydi;scentage isd/ ixsy) ;k.qm the power on a resistor affected?

  A current that is sinusoidal with respect to time is referuz)b;fl: /y urred to as

  Consider two copper wires each carrying a current of 3.0 A. One wire haj1xsxsda ,7:ys twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to that in the ,1d xass 7xyj:larger diameter wire is

  Materials in which the resistivity be:de.bw00ykqzdn: : z xcomes essentially zero at very low temperatures are referrzk :zdd:xe0 w:y0q.bned to as

  What current is flowing if 0.67 C of c/xd u icos9*z8harge pass a point in 0.30 s?

  A charge of 12 C passes thj 5 yv i ,*dqt7l1gq2bk-:lzkmrough an electroplating apparatus in 2.0 min. What is : j5gmq*i,v1llqkt kbdy27- z the average current?

  How much charge must pass by a poin2d)xeco vj7pu1s/r +bt in 10 s for the current 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*q/sap u6.pgasf5:io 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 13.5 A of current, has been lem*nw-dniv g q5tx .*3mft on for 10 min. What is the net numb5dq*nmwm -. i3vxgn*t er of electrons that have passed through the coffee maker?

  In an electroplating procb:f2 8csng2w59+i hteq kqv3i ess, it 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 silvev+ i2giqskq bwt n:hf293c58er? (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 flj m v.omwm7mpo 3+026c x5:myshsuha,v0xx0z ow through a resistance of 330 Wxo,x+0xz3mm wm v7u:p0vamm s c6 0s o5h.jy2h?

  What is the voltage across a 5.0-W resil:2x6nl 6w1jjvvt jc1x29x iustor if the current through it is 5.0 A?

  A 4000-W resistor is connbn f-b+)bi4 jiected across 220 V. What current will flow?

  A light bulb operating at 110 V draws 1.40 A of current. What is its resistqnt e qq:b0ygh8w(d/iu d(5 (iance08u:qy wnh(dtdi5 bigq( (e/q ?

  A 12-V battery is connected to a 100-W resistor. How many electro;r yey,yxv2m3ns flow through the wim; 3yevr2 yxy,re in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameti5- q,-sg+r rju oz+vner 0.40 inch? (The resistivity of copp-izrs5jn o,- q+r+vuger 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 thm i1w1ms6iz9* kfj px7e resistivity isxpiwms7fik m6 j1 z19* $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resis kh0slvcp* :1wtivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wi2yo v jqsude4n 4tryc) 8t6g6nvq 0i2.re (resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 resistivimbv47r : m2cqjico3 o3ty?

  Calculate the current through a 10.0-m long 22 gauge 2thqzyy7eo 5eo d46 4g c6+dom(the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V baq5mc+h4d6y2d4 7eey6ot g z oottery. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectanguqwl +)jd+y) sfv3mo v bq51o t6-wj8gwlar cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (The resistiq+omg-8 qv f3v5)lwy6)1owtsj+j d wbvity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire has n3/vdv .,k c xjqfbg,)a radius of 0.50 mm and 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 (resistivit1m(ffd4y2bpxyq 19jlh m;by2 qau 29qy $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resistanyp kmj1e du3:;e1 wtw*ce 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 platinum is rdzi.gdxrmz8a ;*6m0a .s n1k $3.9 \times 10^{-3} /^{\circ}C$. 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 point of indium. The resistancp 0ux;r tg4ij2g+yel1;ww z,3a ;gzj pe of the platinum wire w2agw4pztjjgx13;e y0;,;rz + ui lg pis $2.000 \; \Omega$ 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-730 3rt l0jokzyql az $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is ratedcx e ra7r0-s2v8i-i xp at 1200 W. What current will it draw?

  A 150-W light bulb running a/r2i 99,uee-s vpijmon 110 V draws how much current?

  What is the nominal resistance of a 100-W light bulb designed to be used in a 6s a*rdciwy5n l+)c 0q120-V cir c0qa6ysi5 wc)dln+ *rcuit?

  A toaster is rated 800 W at 120 V. What is the resisp/0--l*d 3oyuyupbs u tance of its heating elemenyd-l 0ob su-3ppu*/uyt?

  A 200-W resistor is rat lt/3ny-7sh0cjaebn c7afq mrz17c /;ed at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rkg7 +awh-v1p(zy t :knated at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W + /j9i(ojurn rh4a4, ve ;cyubbulb. If it is used at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is usedtq xxim.37vr l74s5vp at 120 V, what is its resistance?

  A 25-W soldering iron runs(sfmj3ft (k cea91-bq on 110 V. What is its resistance?

  How much does it cost to operaip8s;9co o)vln by85bte a 25-W soldering iron for 8.0 hours, if energy costs ; s)opc5vny bl8i9bo8 $0.08/kWh?

  How much energy does a 100-W lightrodn 6-6 mc*v+ n(crjw bulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How muy; l7e0yhjd,hr( p2*ay onua0zve nhy f1(n97 ch heat energy f(7hhypu,( 27*0n9ye eh r1v;n j0odazynlayis produced?

  A battery is rated at 12 V and 160 A-h. How much e9e6cib/ b9p evn oo(/rkki1y,nergy does the battery store?y / k6n1 v9pibekeiobc/,ro(9

  How much energy does a 25-W soldering iron use in 8.0 t n1pv124hsbflex1h.6 sb oi 7hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming the piv4i9nezm0z 0f mh.5* ix7 rnbower company charges 10 cents for each kilowatt-hour of electricity used, estimate the annuiv9znm z4i nm0b5*f0 hxe7 r.ial cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hou0xze,0etu 3efo2g9 c xrs per day. If electce0f e2z t0 eug,o9xx3ricity costs 10 cents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days)jna) +me/;e vo electric bill included the cost of running a central air-conditioning unit for 2.0 hr/day e ajvemo;n)/ +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 electr( 6lvenik-xw vc.aax 5fm3v+7ic 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 fa6ec+- .nm3kx vl5vwv7xi(a 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 throe w;mjnup 30ibt8yp.)ugh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs hb8 y5(6zvxm0s2u dlo $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 2.0v,6/oo 7-lkep7)el4s a vyobnhptq). hp has 60% efficiency. How much current does it draw from a 120e) atonohevolq/ )7 p7kb p 6.-,yvsl4-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What y(p64wolaoj8oj o)(jy 901jn o9xh asrms current flows through this deviooa(xj9y6o9o81 h jlopsaj(jy0 ) wn4 ce?

  A 500-W device is connected to a 120-V ac power source. What peak current flowy5ua6sh f-to :.anul9s through thnoulu-6 . yf5aah:9 tsis device?

  A 500-W device is connected tnt-8r , yvo/ ;bcfn)pho a 120-V ac power source. What is the peak voltage across thi8y/ntr cp;o,nhvf)b- s device?

  The diameter of a copper wire is 0.081ay*f16 zygovw4 82z2* sduza/s;q s5(czm w wz 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 cop2va1zs*oy ; zgwwzs2 cs8zfz5mdaw/uq(46* yper is $8.5 \times 10^{22}$.)