A device that produces electricity by translhj00 e d6wk7 5+0fyvyg4vfm ydd j-*sforming chemical energy into electrical ed*076jy fdg+ v jmyehsl 5d-v 04fyw0knergy is called a

  A car battery

  The total amount of chars+x6p1ret-rm.oneuf7yn s- : ge that passes through a wire's full cross section at any - yfrn6x osr-nt upem+:e7s1.point per unit of time is referred to as

  The direction of convention current is taken to be trv4chb,)fi7f gajeuo j g4):/he direction that

  A coulomb per second is the2j9ip; c zx0nm.-r1 ijr 2re8f k0jfqb same as

  Car batteries are rated::od .las:j tp4 1.hgm gwbz6n in "amp-hours." This is a measure of their

  The resistance of a wire is definerqu.wa+(eouu/p ;2hld as

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

  The resistance of a wire0tk, e9;vdf8; sfup ss is

  The resistivity of a wire j : ty67 k4drra;5m9lashhjt. depends on

  Which conducting material has the lowest resistiv+d5c4poh bp1f(l hyju z1ez5.ity value?

  Consider two copper wires. One has twice the length of the othr6 8 uyxic9ja9er. How do the resistivities of these two wires compaja6r c 8y99iuxre?

  Consider two copper wires. One has tw bph g,8po/ 7fkckd(x.ice the length of the other. How do the resistances of these two /.bppk g(fc ,doh78kx wires compare?

  Consider two copper wires. One has twice the cross-sectsh,l.0bze,m(il z 7 j0-;0id;wtagm6 rom fso ional area of the other. How do the resistances0oihfdm;zs mti7ml,o.w;gs0(j,z 6a r0l e- b of these two wires compare?

  Consider two copper wires. One has twi3dgtb. (z;y,.qha:e*h- (dt zqzaaab ce the length and twice the cross-sectional-tbhz eqyb:aa*z,dd(z;tha 3( ga.q. area of the other. How do the resistances of these two wires compare?

  The length of a wire is doubled aehmj6y9y (6 fsnd the radius is doubled. By what factor does the resistance changeeyjsy fm(66h 9?

  How much more resistance does a 1.0 cm diameter rod have .xtntb:f ,mc8d* mc2j0: irklcompared to a 2.0 cm diameter rod of the same length and made of the sa.i ktr:0:dcc, t*m8jb 2mlxnfme material?

  The resistivity of most common metaiv u,:mcdw:wb(*j 7dsls

  Negative temperature coefficientst + 7x bry.q52b-xqfty-kevl9zq-dq/ of resistivity

  What is 1 W equivalent to?-ig)ut cu3sdnf0,q o *

  A kilowatt-hour is equivaluaolq. 2eo1 w4o9d 6poent to

  If the resistance in a consts3b n *w0)wyh )1 zdver(,itryant voltage circuit is doubled, the power dissipated by that cwy(1r3s ihb te )z*r,vnw0)ydircuit will

  If the voltage across a circuit of constant resistanc4ys4 )a :owqqte is doubled, the power dissiyq o)st4a:q w4pated by that circuit will

  If the resistance in a circuit with constant current flowie9pw-)itubnob- pf)3 ng is doubled, the power dissipated by that cpwtbf)pobnui e3- 9 )-ircuit will

  If the current flowing through a circuit of i(3c)vm x+ kgvconstant resistance is doubled, the power dissipatedcxg( ivkv+3)m by that circuit will

  During a power demand, the voltage output is reduurw6i0h r +s7*ugrs-uced by 5.0%. By what percentage is the power u6s h+ g0r*7rwr- uuison a resistor affected?

  A current that is sinusoidal with respect to time isxes )k)dde ;1n referred to as

  Consider two copper wires each carrying5vkke c2. e s(8w7lxkp a current of 3.0 A. One wire has twice the diame kp8 lx.ces7evk(k25 wter of the other. The ratio of the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becobs)d7s;p;h ve mes essentially zero at very low temperatures ar7pvs bd; h)se;e referred to as

  What current is flowing if 0.67 C of charge pass a point in 08 dt/s ;n7nth w6hbn49px.hfc.30 s?

  A charge of 12 C passes through vg o4ak9:jlkiai: ./p(l db,wan electroplating apparatus in 2.0 min. What is the average curre/la9aldw:vb g ipoj4,i :(k. knt?

  How much charge must pass by a point in 10 s4lufjo:ezxg7l o 6 e+e5 ow)da,n/o d c+qe99n 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 flowinn g ur)7no+4jag 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 left on for 10 min. Wembq7 ,dr gj*:hat is the net number of electrons that he7d*mj ,rq:bg ave passed through the coffee maker?

  In an electroplating pxvx nv*ygqa c; 0ahc4 34my4*yrocess, 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 silver? (The silver ions are singly charged, and the atomic weig 4x;gh4c*0y4a vynyq* x avcm3ht of silver is 108.)

  What potential differenc/5 pki/z; /4u(zsv8zhxozr ie e is required to cause 4.00 A to flow through a resistance of 330 Wip85vizu/x rk/ /zhzeso4 ;(z?

  What is the voltage across a 5.0-W resistor if t /m1bg twfihsmh: y /h5ps* eo03ri4r6he current through it is 5.0 A?

  A 4000-W resistor is connected acrosj-usm/sms135s+rj3 b f dq d pj*2vti.s 220 V. What current will flow?

  A light bulb operating at 110 V d/arfd, h)nq q:raws 1.40 A of current. What is its resistance?q:dfh/)qr an ,

  A 12-V battery is connected to a 100-W resistor. Ho lh 1(9bewu 4hh,etrwl b03ii1w many electrons flow through the we1hu,l ihbhr3b 0i(wwt l19e4ire in
1.0 min?

  What is the resistanc k)xv46cf zpop6dc3a* e of 1.0 m copper wire of diameter 0.40 inch? (The resistivity of cop6zc xv6pf ak3pc4)d*oper 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)ume :d4s1dwp the )s:p4mu d1dwe resistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (re49oyrlrf+u lv1*d b k8sistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistivjsoq*iie8rkc xiykab 1rn- d4 ,y-11 +ity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 wfz3,+ hozeu9 ohms. What is its resistivity?

  Calculate the current through a 10.0-m lobiks0r+bb,g ky9d z ; -lih;;bng 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. (The resistivi; rkb,0liyg;b -kzh isb+b;d9 ty of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cro)sg(f 6y; 9ckyfdio9 lp84 pqsss-section, 1.0 cm x 2.0 cm. What is the opyqsf;lk 89 d9 )(i fp4gysc6voltage drop along its 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 a radius of 0.50 mm a*85l2zsq x sfdnd 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 cop)kdcqd;:5d pa hld *c2per 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 resistancer8m -rfnjv1i8 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 res3 mz m*xuk:wg6istivity 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 melting point of indium. Th/ewi du 0u1,+ /wigafve resistance of the platinv+g/w0eu 1wia, u /fdium 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 ;va1it: )efdz:azre) $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current will it 8f 4m9dozukzw ,k+pp))l tt. v8jys 5cdraw?

  A 150-W light bulb running on 110 V draws h, l;;v sl9srrg4a,cdwt:7 k qfow much current?

  What is the nominal resistance of a 100-W light bulb designed to byc li2.n6- kt,cparo :e used in a 12i.ca-cpkl2 :6o rynt,0-V circuit?

  A toaster is rated 800 W at 120 V. What is the resistancxzlrpm4(c,m01 5amuv e of its heating element?rvm( lpam,c15x 0m zu4

  A 200-W resistor is rated nn4 *(c/6kvgjm ubn k-at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated atp285abt jr 8b g+l)juw $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what c ro ;d)ji.3b5djx:ce surrent does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, whlxf(n lv6jlv b(mi992at is its resistance?

  A 25-W soldering iron runs on 110 V. What is its resistancelaprvwc6 w;( lr s649x?

  How much does it cost to operate a 25-W soldering ironoi1k+qm3mi)e for 8.0 hours, if energy cost)ie3mm1q oik+s $0.08/kWh?

  How much energy does a 100-W light s3m4s ,qb7rkb6 mh+n xbulb use in 8.0 hours?

  A 1500-W heater is connected to alopsi1 rsltsx5 ) 2ve7rk,d 9+ 120-V line for 2.0 hours. How much heat energy is prod)tlr172 voksdx 5e, + s9isrpluced?

  A battery is rated at 12 V and 160 A-h. How much eneq3sv,-lg4yn t 0gedx 8rgy does the battery store?8 t0yg-xge4 qv3ln,ds

  How much energy does a 25-W soldering iron u mxm -wd;u*v)rse in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assu,+mas8ffohh2kddas dj(4 ( 3 rming the power company charges 10 cents for each kilowatt-hour of electricity hsrafj3samh,d o (4k( 8dfd+2used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours pe7,u2-o9z oq r0qpo xyxr day. If electricity costs 10 cents per kWh, how much does it cost to run the c2,x - qqzoo9urpo7xy 0omputer annually?

  The monthly (30 days) electric bill i61 qj8azr(2 xdrpkc5lncluded the cost of running a central air-conditioning unit for 2.0 hr/day at 5000 W, and a series connection of ten z( a pqrl81jrdc5x 26k60 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 x3e2 c7i sevcj2,cag 7operates on 240 V and generates heat at the rate of 2.1 kW. The heating7c2is3eexj7c2, cv ag 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 temperature.) What effect will the repair have on the power dissipated in the heating element?

  14 A of current flows t2e;t u*f)x wxjfr.ox4hrough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costsbnk k04+cewa 3 $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 hpb6s 0 +.x xe21ylvvb uxee3j9h has 60% efficiency. How much current xvxxelh2 9be60uyev 3s1j +b. does it draw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rms current flow9r/a0zvv uz ho:s z,cj-bp .a2s through thiszvo ap c, hb2s9j0 z/vu.a-:zr device?

  A 500-W device is connected to a 120-V ac power s4j:vjku5x ug 4ource. What peak current flows through u jk vx5ug4:4jthis device?

  A 500-W device is connected to a xd**ef j0g/jsa l(w;x120-V ac power source. What is the peak voltage across this devfs( /x0l*d ;*agjje xwice?

  The diameter of a copper wire is 0.081 inch. The maximum sapnc sdu0ri2 7.t v)sm9q;:niwfe 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 carstsnq92 u p 0)rwdmc.7i :nvi;riers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)