A device that produces e + fw 6ao*/rlfvco ktx/869anxa8u ;iolectricity by transforming chemical energy into electrical energy is called w*//i9t l+x8oakxo n;fou8afa6 c6v ra

  A car battery

  The total amount of charge txqsflv0 ;mk; dirfa d5:t9h6;w +pw9j hat passes through a wire's full cross section at any point per unit of tim xkpvsqta69fi0+j;l5w9 h;f r;mw d d:e is referred to as

  The direction of convention current is taken to be the direcc26nl.mc-j)5 vt.me pydu:l v4kla q+tion that

  A coulomb per second kkxi3d,eqp+a 54 8h5ajoen, p7 vw xn1is the same as

  Car batteries are rated in "amp-hours." This is a meas snsoajc) : */ s*. 0vp7rgnn895wcflaqm:ted ure of their

  The resistance of a wire is defined am1xf j)m5 w(rob0)c,kfj y l0xs

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

  The resistance of a wire b33j-h /svl67-bqhuytu09 yzmwdpx/ is

  The resistivity of a wire depends ;5pcqtjk4xakg yj (b(4 f)5jfon

  Which conducting materizk4c.+10mfw)mza *ny b;u/ c;z txf mwal has the lowest resistivity value?

  Consider two copper wires. One hr1 jnug87 vez:c4hshj 0i8c 7was twice the length of the other. How do the resistivities of these two wires compare 8 u 4hiver:8j0ccs ghw77z1jn?

  Consider two copper wires. One has twice the length of the other. Howl w4ll-k0hn v1itr ;;m do the resistances of these two wire4 r llh;l0m1ivn;t kw-s compare?

  Consider two copper wires. One has twice the cross-s k l4kk tw 84xy7mtr/uhxz be9:vo1(q(ectional area of the other. How do the resistances of the((zttml x4w 4okre uk/b98 x17q:vy hkse two wires compare?

  Consider two copper wires. One has twice the length and twice the crosd 01e a* j:pem+rbngy4s-sectional area of the other. How do the resistances of these two wires compea :e4prgm +b*01jyndare?

  The length of a wireoxi1sc +4i 5o. 2,e4pyyjnhll is doubled and the radius is doubled. By what factor does the resista sx2l.ipc 1ojiye5 y4l4no,+hnce change?

  How much more resistance does a 1.0 cm diameter rod have compared to amcee lo9 /cj,(o8os i7 2.0 cm diametecos7ijm e9(8 ,ec/olo r rod of the same length and made of the same material?

  The resistivity of most common meta iw fhj-5vfd02ls

  Negative temperature coe63m( jduul g1tfficients of resistivity

  What is 1 W equivalent ykrf3t5ac9l6 to?

  A kilowatt-hour is equivalentcc8p6xu:: i mx to

  If the resistance in a constant voltage circuit is doubled, the poyj*x5. qtf :vhwer dissipated by that .thj xy:qf5*v circuit will

  If the voltage across a circuit 83g-ixxdgde- of constant resistance is doubled, the power dissipated eig38xddx--g by that circuit will

  If the resistance in a circuit with constant current fldyo s.l5:dck:owing is doubled, the power dissipated b c::odl d.y5sky that circuit will

  If the current flowing through a circuit of constant rew;;tej-lp l hov+ ) owp-4e0s1 y)ikvnsistance is doubled, the power dissipated by that circup +jl1;o0p4lit;) e eh owwvky v)s-n-it will

  During a power demand, the voltage output is reduced by 5.0%. By what percfncx9(e.ux.4v(q+q /34 l 1ocuyel4 rk bwtbrentage is the powe.bc 4q1(+re4 9uqo( x./vbl fr tw4nke3luxycr on a resistor affected?

  A current that is sinusoidal with respect to time is referredwi9q4dt+iwaj,xlof ye:9 r9 :i. 5,zt;h dee d to as

  Consider two copper wires each cufoz.wnxm62q k b2. j,arrying 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 , o6b2 2xk.uf. jzwqnmin the larger diameter wire is

  Materials in which the resistivity becomes exptrb-)n+s yfh::w. a ssentially zero at very low temperatures rx+-awh::nsb .) yftp are referred to as

  What current is flowing if 0.67 C of c/jbsbk 4u2qx59ujzu9i vk:y id*u:2z harge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating apparatus in 2.0 min. What isw04 x d/pt up)4mq, ohlvnu5/f the ave5 op tfxudm4,n)pl// hu4w0 qvrage current?

  How much charge must nijth/ojq*:37wpw* ap k-5 ,+jb wmiihw46gd pass by a point 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 flowingd7m.0iy)g lun:hh7y*q9 vf,ka unu; x 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 drawk) sxm8frm dsacl4 (59s 13.5 A of current, has been left on for 10 min. What is the net number of electrons that hamsdafmx4ck) s(5 lr98 ve passed through the coffee maker?

  In an electroplating process, it is desired to deposit 40 mg oozx3 m9kfza .c6 nr.,mf silver on a metal part by using z rf m..xk3nm6oz,a c9a 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.bx/ane y --a*i00 A to flow through a resistance of 330 Waye *ib/xn--a?

  What is the voltage across a 5.0-W resistor if the current throughimb o8mt,*h(37su1gf6sdq a j 5l :wyr it is 5.0 A?

  A 4000-W resistor is crepc+ 1 mvb vv/,9qkwj43 xa*honnected across 220 V. What current will flow?

  A light bulb operating at 110 V draws 1. wh;*;b 7y73vjwleal44x 0-al r fpguf40 A of current. What is its resistance4v47yx; ljuw-br l*0 ;fpwal e37 gahf?

  A 12-V battery is connected to a 100-W resistor.co(.r6samvlr*as(. rxc8 /4q1htf fe How many electrons flow through th.6a/eo1sr xlmst.f(c* r8r h qfv4c (ae wire in
1.0 min?

  What is the resistance ofq12r v ildon:7 djs84k 1.0 m copper wire of diameter 0.40 inch? (The resistivity of copper4nd sr 2ldvo8ikq 71j: is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diameter and *9dk y+q:x.m asvnx6u-qh.yc45 m long, if the resistivit: qsx9 y.hy*dakxq mc6u-v.n+ y is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of coppe m:loblz6sf2/uc :x)y pwin+4r 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 (resisg ksc*ux) 57istivity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, mera 85tbzbuaofa14b 5+asures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radiu2 tzqc* 08nqvys is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. (The resistivity of ynqv cq0z2*t8nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long andjfwtd hn-9+z7 ns;xr4 of rectangular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along i+hsn4 f7w9z t;jx-drn ts 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 ;t.n6:g*mjwg *dv eyh 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 copz xnh 7orgm9*7per 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 (.ttl:ameqi// 9 ahq za resistance 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 resistivityswuv ,uhs82xjhv ) 6/m 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 determizq9/gq w;tghvki4p )1ne the melting point of indium. The resistance of gq w/gt4q;hk i9v1zp)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 throuyfy,m)nf w . b59mbc)ugh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current w.ia8bler ts6 :ill it draw?

  A 150-W light bulb running on 11 0kd(eiy8gy h30 V draws how much current?

  What is the nominal resistance of a 100-W light bulb dwq)w;3up qf6+(q eai qesigned to be used in a 120-V circqaqfqp) w;ui q36e (+wuit?

  A toaster is rated 800 W at 120 V. What is the resistance b4ra5yb;p3jd of its heating elemenbbpj4a ;rd3y5 t?

  A 200-W resistor is rss fnt9)znx:0tb l 6b-,isr d5ated at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated ak+t hqbt3z+t 1rib 31gt $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V,+bf/nvrav 7u / what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V,+7b 7 x3de*awwtl(q fszjw7 .q what is its resistance?

  A 25-W soldering iron rg3 d ks57 ,pxgfprvc89uns on 110 V. What is its resistance?

  How much does it cost to operate aq 4yflt 4oqy)3 25-W soldering iron for 8.0 hours, if energy coflyo y3 )4t4qqsts $0.08/kWh?

  How much energy does a 100-W lighhkujd2nr )( 2nt bulb use in 8.0 hours?

  A 1500-W heater is connecttff sh :a-rx;*hh8h2ied to a 120-V line for 2.0 hours. How much heat energy is a ;hitr-*:hhf2 8sxf hproduced?

  A battery is rated at 12 V and 160 A-h. How much energy does . niz2yw8 z8ahr(uu5athe battery store?.(y zahar8wzunu8i2 5

  How much energy does a 25-W soldering iron use in 8.0 nd ws0. n-mx+chours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming the power ra;ogku ;f9badf)+gkxc-.y 8 company charges 10 cents for each kilow9.gg)k;a8f o fa;-u kdby+crxatt-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hou1oyfcebirq;50 0 ros ,rs per day. If electricity costs 10 cents per kWh, how much dry,sqirobe5f01c ;0 ooes it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of running a central ai)xw;t-xu p/f,5 cdh hzr-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 electric bill if electricity costs 8.0 cents per kWh?)tuwhdhzxx5f ;/p, - c

  The heating element in an electric drier ope, sxgb8*h,lb1 3zw wpgrates 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 dg,8b,szlgb 3hwp wx *1epend on its temperature.) What effect will the repair have on the power dissipated in the heating element?

  14 A of current flowsijz) cr0 oa5uy9 yk::s through $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs s5io uph-9 0sq c-hn2y$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 5au: s74k1yl u/ hd5o4iwxt vbthe rate of 2.0 hp has 60% efficiency. How much current does it 7ul5a1 bxwk yd:u4 vh5/ stio4draw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power woc*a x/h1n8 qsource. What rms current flows through this devicw* q8xah/ no1ce?

  A 500-W device is connected to a 120-V ac power source. What peak dc5iu08l / sqrcurrent flows throughd5r / us8li0cq this device?

  A 500-W device is connecv9f 5fkxw:/plo 5 8wacted to a 120-V ac power source. What is the peak voltage across this dev cp 8 9wvaxl5:wk5fo/fice?

  The diameter of a copper wire is 0.081 inch. Tvb;vvy9 p teok*+1/btl 6 wnk(+hwr5 she maximum safe current it can carry (in order to prevvrwsl*+ kt5 vo9ve+y(1t k/h 6nb;pwbent 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 $8.5 \times 10^{22}$.)