A device that produces electqnp9,p0qqo o mv5)6ph ricity by transforming chemical energy into electrical energy is vn6p m0qq hpoo59) ,qpcalled a

  A car battery

  The total amount of charge53gd+gf 3 wk 3xc:ciax that passes through a wire's full cross section at any point per unit of time iskaf 5:33xi3 ccgxw gd+ referred to as

  The direction of convention currenb+kxgxejr2yy1 vfacxw p )z/i z:-863t is taken to be the direction that

  A coulomb per second g-ma xd7vh7ax: hf8, iis the same as

  Car batteries are rated in "amp-hours." This is a yb.9x( nye*rfipxn,(,/gut / at ma-qmeasure of their

  The resistance of a wire is defined l8 g 9en-fyy 1anvbv.yyk;4x*as

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

  The resistance of a wire ikdupdko)*t, ;m*r* 0h4mrg t qs

  The resistivity of a wire depends oa9 gx5y;ffh33 l oaqu1n

  Which conducting material7iae83p fy; qt has the lowest resistivity value?

  Consider two copper w 2qs 1j4tdsbq 33c8c*9fpsrunires. One has twice the length of the other. How do the resistivities of these t q3s*cs1 2jucnpqs8df3bt 49rwo wires compare?

  Consider two copper wires. wn0-mpfz4s8p t6k k9,f jor9o One has twice the length of the other. How do the rer4ms6oo9fkpp twj8-fnz 9, k 0sistances of these two wires compare?

  Consider two copper wires. One has twice tw j7x/gnk-vm,he cross-sectional area of the other. How d /-v g7wmn,kjxo the resistances of these two wires compare?

  Consider two copper wires. One has twice the length and twice the cross-seo (edtwp/2 7ugctional area of the other. How do the resistances of these two wires codp ot72/g(uwempare?

  The length of a wire is doubled and the radius is doubled. oyffr t. (i5kaob2b-. 4r -jit By what factor does the (2.rb. toiarotb 4 -fj-5ify kresistance change?

  How much more resistance does a 1.0 cm diameter rod have compju8r/,i jdm* c0cx u.vared to a 2.0 cm diameter rod of the same lenmju08c v* drujxci, ./gth and made of the same material?

  The resistivity of most common mevu)io oy:en y793u(a dtals

  Negative temperature uji- 6nw.7:+fwi qiwecoefficients of resistivity

  What is 1 W equivalent tonf+ kspq;2:h c4p*sqg?

  A kilowatt-hour is equivalent 09fi l.8hlib4wr lnw/to

  If the resistance in a constant voltage circuit is doubled, the wl6nvf;;kls1jo) 6fx power dissipated by tok f6l)v;l xsn ;wf16jhat circuit will

  If the voltage across a cz56 r2v)iau djircuit of constant resistance is doubled, the power dissipatejvauri6z )5 d2d by that circuit will

  If the resistance in a circuit with constant current flowinmhy37 ck9w 1xbxkoa73z;1s febb7v9 ig is doubled, the power dissipatedyxbk 9efhs9b7 1;1o3i7 v3bzcw mx k7a by that circuit will

  If the current flowing through a circuit of constant resistance is doubled, thzc4)s ufrxw/5) kljam1x ti5.e power dissipated b5 mk5uz)x/ .)4lisrt j1xcwafy that circuit will

  During a power demand, the voltage output is reduce7zqmm- uj p-(6*kzuj lzb .o:xd by 5.0%. By what percentage is the power on a resistor u. jb:7-mz zjp(uxz l6m*ko- qaffected?

  A current that is sinusoidal with respect to time is referre,sh jh1c 3az 3hdbe)4jd to as

  Consider two copper wires each carrying a current of 3.0 A. One wire has twice c1ytli9 9c*d wx/,oip the diameter of the other. i/ y9 9*cxctl,do1pwiThe ratio of the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes esql zxb)2s3og2el8 ag*sentially zero at very low temperatures are referred to asqs8z)g2 2*gebl x a3ol

  What current is flowing if 0.*g144kgsj zss 67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes through an electroq up(ao)-(quu c7l r5dplating apparatus in 2.0 min. What is t-dqu p5(u(l c7q)au rohe average current?

  How much charge must pass by a point ik wdgm0j o2f0.n 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 iximv,k- l udo;82hwa)f $4.0 \times 10^{16} \; electrons$ 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 bepkpsy.,8) +t:ght2+ds-i f2 zwaeb zf en left on for 10 min. What is the net number of electrons that z++ 8fsf -d kst eyg)p,tb2pwahz.2:ihave passed through the coffee maker?

  In an electroplating process, it is desired to deposit 40 mg of sil5x)fr p;a cb8ah5l9f/dvked9 ver 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 silver? (The silver ions are singly charged, and the atomcrd l)vdxff/aa e5 pkhb8; 995ic weight of silver is 108.)

  What potential difference is required to c x rgn 2b2(9/pjkze/gqause 4.00 A to flow through a resistanbg(/jrkp9gzxeq2 2n /ce of 330 W?

  What is the voltage across a 5.0-W restgri ey9q52o) g hwc1-istor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. Whaowlch9)4a h,o t7nt;f t current will flow?

  A light bulb operating at 110 V draws 1.40 A of current. 0oc fg1en+sq( What is its resistancegqf0o(ec1n+ s ?

  A 12-V battery is connected to a 100-W resistory* og5g w7nm9tq4kw* v. How many electrons flow through the wire wqo45vtm gwy gn*7 *k9in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? ( iw:l/dm s8f0l:ld,y8j8r8 e,njlqvuThe resistivity of copperfl 8djmrv8de8lqijnlswl:8 ,:/ 0 ,uy 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 lonwx tg)/bw) ,xrg, if the b)rxx )tw,w /gresistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (reemly5 w *7q jyj1 g6;.nbcskv.sistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistivity zgt*m g7vt2czp7w 7f+$1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod,;qdnq69 +riny 4.0 m long, measures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the rad6;5hnag; yc lb p-ypj:ius is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. (The resistivity of nichrome is p:pgy l5;ja6nb-cyh; $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and 4fklhb w, :2 h1*aza.sgdontc p9 5pa0of 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 h2c kad4o1wzb hl a5p9s :n., pgfa0*tis $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire has a radius o m 2xxz)iphu r+ iz*s(+w/chb8f 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 (resistivity f, x+nr5m lhw8$1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resists 8ur 3wr fvw99rjc425rho:xsance 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 resh: a bwsaf6c4ye0t4u wi n92(aistivity 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 mel2;gmbbfg(/ lx:vpp l-ting point of indium. The resistance of the platinum wire is lb-f(v ;:p g xg/l2bpm$2.000 \; \Omega$ 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 8 9as: 8hhbspban $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rateda((c )-thv5flq u6ojoh by*.8m nq 5jp3t 0nbd at 1200 W. What current will it draw?

  A 150-W light bulb running on 110 V draws ngspdj p,wxi p3x f4 9j2+w05qhow much current?

  What is the nominal resistanczt jghzm(6.:m01z quilu s:)udxj 1y.e of a 100-W light bulb designed to be used in a 120-V circuit?uu1j:1x: .su6jhz).ygdz ml m qt0z( i

  A toaster is rated 800 W at 120 V. honw+u 2 w23vk What is the resistance of its heating elementnh2+3 o wv2uwk?

  A 200-W resistor is rated 0 b(uz+ qxkecd2 qil(:x:p5doat $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rlicb,c24g vw -w;x; (fz*l przated at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bnh ezmky2 6l iwfj96+-ulb. If it is used at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used 2v bp tq (r.t.v2zmsya+:av4a)pczl5at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. Wgt2zf;s4e i+ vhat is its resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0 hours, if eneo8yhpmg :a4ahv 2, :rqrgy costs: ga4vp ma yqh,ho2:r8 $0.08/kWh?

  How much energy does a 100-W light bulb use in .nk :xz pu;nb9:u 6zen8.0 hours?

  A 1500-W heater is connqz( fks63qov6 qpn.f 4ected to a 120-V line for 2.0 hours. How much heat energy is p z.qv3oqks46n6p( ffq roduced?

  A battery is rated at 12 V and 160 A-h. How -f6r ac boqa--/gago: much energy does the battery store?g-aoa6foq :-g/ c-bar

  How much energy does a 25-W soldering iron use in 8.0 hours?+) yzg)poel qa,:ib7 ky)/ euw

  A 100-W driveway light bulb is on 10 hours per day. Asqng6p a o+)(ld(h wlq5suming the power company charges 10 cents for each kilowahw5q ()a6 npgdol(ql +tt-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is tursc;is6hi19l oned on 8.0 hours per day. If electricity costs 10 cents per k l1o;cihs69is Wh, how much does it cost to run the computer annually?

  The monthly (30 days) el zth 1ueebpo42 576dg1jcg- vdectric bill included the cost of running a central air-conditioning dzbgj141p-e t5gudceh6 o2 7vunit 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?

  The heating element in an electric drier op3jzw5g3 bd8rcy2- enl 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 temp-3z 5gd3ylnrecw j2b8erature.) What effect will the repair have on the power dissipated in the heating element?

  14 A of current flows throug4v;atbj )x uu,2,ueb d8xl3wah $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs 7mjflb- tz7 p.g2g+le$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% efficientpk/8uq x* dh(cy. How much current does it draw from a 120-V line?p( /xq u*8hdkt ($1 \; hp = 746 \; W$)

  A 500-W device is connected to;bwygj1 y;5l.y*fe jn a 120-V ac power source. What rms current flows through yjng;y1 e .;fy*jwb5 lthis device?

  A 500-W device is connected to a 120-V ac powe5i6p,+a raa8rvwb y+lr source. What peak current flows through ta8p+r l,yw6vb a+a5irhis device?

  A 500-W device is connected to a 120-V ac power source. What is the peak volt fq7(rofi+u2e+c6lixage across th6ocff+el7(rxi 2uqi+ is device?

  The diameter of a coppe .qhiq 8 b;jnrv.2 hyawcsg9.0r wire is 0.081 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 9a8r.w.y c0v bq2nhj . hq;isgvelocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)