A device that produces electricity by transforming chemical /b,g1 f(sx6 k* dozgeaenergy into electrical *1o(s,gzda/g x6 febkenergy is called a

  A car battery

  The total amount of charge that passes thf1anva .2*j1j+f mpzyrough a wire's full cross section at any point per unit o 2nf1*yam z+ vf1p.jajf time is referred to as

  The direction of convention curre;vlg (* p2hkljao 2-kynt is taken to be the direction that

  A coulomb per second is the sa2 7b(xdro7suk3acz +bme as

  Car batteries are rated in "amp-hours." Tktup/weriw u/z -e),tfe5t l gm)a846his is a measure of their

  The resistance of a wir4:s7s bacnn2f e is defined as

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

  The resistance of a wire )5 dya godav..is

  The resistivity of a wire depends + iv wj3n;k+nblb2 rus:ys7t)uj ;j8pon

  Which conducting material hastiun( fxn,v1w x8aao:6h*tq - the lowest resistivity value?

  Consider two copper wires. One ha9g1l(otl v c/ole( xw-s twice the length of the other. How do the resistivities of these two wires com l-vl(( lxootcwg/91 epare?

  Consider two copper wires. One has twice the length of the othet9r6zfxy obpsm25od tg/; 7 eckmo227 r. How do the resistances of these two wirer pt75do2e972/goo6m 2xscm; bt zfkys compare?

  Consider two copper wires. One has twice the cross-sectional area of v xd ,y+/ze.aptxns2jtmp )i6cf.928dlpvn :the other. How do the res 2v 2mjdt)flca.t+zx8d6:n xp ,pis vn/.e9pyistances of these two wires compare?

  Consider two copper wires. One has twice the length and twice-. t xu4/uefar the cross-sectional area of the other. How dxefuat r-4u/.o the resistances of these two wires compare?

  The length of a wire is doubled and the radiusl 23y ol,36( bh :cw-;(fdsiitexbhge is doubled. By what factor does th,g;3-xeld 2fy(i sc e obib(6whl :th3e resistance change?

  How much more resistance does a 1.0 cm diameter rod have comppaql4 c*9z zs0a-f8 1su.e4m rmetk; cared to a 2.0 cm diameter rod of the same lengtka.l c 1e 4;qz0sp4mafut-* mzc es89rh and made of the same material?

  The resistivity of most common metal7ar6k8opfd b/s

  Negative temperature coefficients p9p)q csvm)1e of resistivity

  What is 1 W equivalent 3dby:yq/da hw/2 8c2r03uc(csgw thz to?

  A kilowatt-hour is equivalentaz y xol 9tmxr:64bd3v/*s1wf to

  If the resistance in a constant voltage circuit is doubled,s.) p*jclddf 66uyuw(0)jgeg the power dissipated b0udf s pdc)*j wulg.6j y(6)gey that circuit will

  If the voltage across a circuit of constant resistan)gy az;-wqw-q3-khb fce is doubled, the power dis wwz ;fhb3q-qg-a)-kysipated by that circuit will

  If the resistance in a circuit with constant curr6ds0z 4u 36 hct iivq(wx/rytm2x:.kyent flowing is doubled, the power dissipated by dx6 3x /m2(0tizuyc 6.:wtvhqyrsk4ithat circuit will

  If the current flowing through a circuit of constant resistance is doubled,t q p;ixjo;p2rn1+y7b the power dissipated by o+bxp;j7nipqyrt; 1 2that circuit will

  During a power demand, the voltage output is reduced by :xv*xm/.:ni*d ijro4q(f ykl 5.0%. By what percentage is the power.jidqmfx*l k /xvn o 4:ir:y*( on a resistor affected?

  A current that is sinusoidal wii6pb zz wu6wt)ds xdo*o:w +t ,1r1c/sth respect to time is referred to as

  Consider two copper wires each carrying a current of 3i -za;gxz,e s3 6pt)vh.0 A. One wire has twice the diah6sit), xg3-zvp z;eameter 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 becomes essentially zer49ybs srwvmyj9** v/e o at very low temperatues yy49rwvsj*v9 bm/*res are referred to as

  What current is flowv c;11sraug1r nu,bu 0ing if 0.67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating apparatus in 37wfi f 1dklo2i g.xf22.0 min. What is the average currendx.i2likf1g 2 73wofft?

  How much charge must pass by a point in 10 s for the current tq,i ;m q a6r,o5bh:aksvo u(i5o 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 flow(0 pn-+0nzgoo9zgk2 5og(/u p hrr mering 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 beerg(suo 1q i5c 55n-ywon left on for 10 min. What is the net number of electrons that have passed through the co(uwqsyr i-oc55o 1n g5ffee maker?

  In an electroplating process, it is desired tod+vs +4 )bsqe7k 2snzf deposit 40 mg of silver on a metassnq7 +zes4v+ bk2d f)l 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 weight of silver is 108.)

  What potential difference is requb j(ykby3h,lo) :w7lj ired to cause 4.00 A to flow through a resistancyky, l boh:bjwj7l 3()e of 330 W?

  What is the voltage across a 5.0-W resistor if.sm.eeg83bjvi8lb w t1v8it / the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What c3uzbb+*qcyy5u*7w i6 gg.ttl urrent will flow?

  A light bulb operating at 110 V draws 1.40 A of current. What is ufo6d5xh 3be, its resistance3odx65,ehbf u?

  A 12-V battery is connecty5 ( cnub6ph5 z01x vyv9:m5ua oov*jhed to a 100-W resistor. How many electrons flow through ozh6vn ah1p xv5v5by j u9 (y0umoc5*:the wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diamel(k+nlzcgc m58x0k:*ka +d ejter 0.40 inch? (The resistivity of copper is*k +jdk+kcle l0 z(5 cman:gx8 $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diameterchzj w6r*lz4fd 3*a m7 and 45 m long, if the resis zzld wah374j*cf* rm6tivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper c1xwr3:ku yr)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 (resistrka3jhdq:x (t8 h+ .ctivity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 mb0uqq u6cf.jl;xe/ u z z47du6 long, measures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m lono8m q:ouben99 g 22 gauge (the radius is 0.321 mm) nichrome wire if it is connectuob e9 oqnm:98ed to a 12.0-V battery. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cross-section, 1.0 cm x m:; *q bznxmf.fv4.sz2.0 cm. What is q mzb.*vmfn 4;zs:x.f the voltage 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 0.50iah74 08phv 8d bbdz6u 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 co*+0 0p:1zf 3iq9urkzlfmqax3 7 jlvvr pper 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 resistancz .n nlcc2 a*si5k/rc-e8)fkie 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 resis(j x6+ 6 5bjfezxr0ifotivity 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 a;dpi69qj 13r6 s oyajthe melting point of indium. The resistance of the pajq sy6j;ao16p39d irlatinum 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 throu3*kkgra3 kycy- -1 * lsiex1kygh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current will it dra2yk/))kqp dsowv +uj/w?

  A 150-W light bulb running on +t1uy vuks s;( e,n( wk;5nkkx7gt ur.110 V draws how much current?

  What is the nominal resistance of a 100-W light bd+(yror2i o1s ulb designed to be used in a 120-V circu 2o1 (dyro+isrit?

  A toaster is rated 800 W at 120 V. What is the r6c jkia mr +7y7oidy.j0g 8br(qap8,v esistance of its heating elemen 6kdrgp ycibaam0q7 j,r .y78vo+i8(jt?

  A 200-W resistor is -u: zsjm /kw-zrated at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated atr/sn umw aj++g mn4m*he5 yuc)9( )usy $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what current does ht -+ c-g+e4hig-vbjz xi6c0v 9tuia)it draw?

  A lamp uses a 150-W bulb. If it is used at 13mk9 1urvc kcv0gqc4 520 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What is its re. w)x1fv )hz.g eze5k actr(i9sistance?

  How much does it cost to opeeu-wbc/, mx );gj1kyg . 3qaerrate a 25-W soldering iron for 8.0 hours, if energy mayr.,3b ee xcwg q-)j1u/gk;costs $0.08/kWh?

  How much energy does a 100-W light bulb use iny a3e)kq1n3k 9j+m35jbcbauu. xltjh 0mdr 36 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How much 7oq )du y4mnpy 3kbogm-r (:k,heat energy:(rmu)p, yyon4k73 bqdo -mg k is produced?

  A battery is rated at 12 V and ( j8z 8se5m 9xzkbltosks/vh o g6c7)3gi2: nl160 A-h. How much energy does the battery store?c3l:8zs )n2bve87h5 smgts(o9 xz6k/oilk jg

  How much energy does a 25-W soldering iron use in 8.0 houb r nzj0e3/a zv+zfsjwofm57-n3dg 0.rs?

  A 100-W driveway light bulb is on 10 hours per day. Assuming 0 p.g*l.ifawg-b/xx wthe power company charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost to operate the bulb.gg0*.l .f-wp iaxxb/w

  A 400-W computer (compp(zv jo+yiy:u2 /av5u uter plus monitor) is turned on 8.0 hours per day. If electricity costs 10 cents per kWh, yp+o5/: viyazj uu(v2how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of running a c1t*nf/h-bh)6pqbknm wwz8e(p 7qx+h * z+ tysentral 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 elect)*-h6kpzbqfh xs t8 hmw n +(w+z7nyt*qpb e/1ric bill if electricity costs 8.0 cents per kWh?

  The heating element in aq+f:4 ham*6d sn/ z1lmxjk5 znn 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 s aj:mxm +fq6 5nh*zz14kl/dnwire 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 throu z(m/afb; 0s9drvuy+xgh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs u *ovs kvjy3g r0-56*sspuz8(ue uo +k$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 h a-.cbr9/ v jfdymkxu ka 8i.oyl.::v+as 60% efficiency. How much current doeri8k .bx+ :./mykad:lf.yj u-avo 9 cvs it draw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. ;e1 kh*jr*eo n What rms current flows through this devirn ojk; ee**h1ce?

  A 500-W device is connected to a 120-V ac power source. u7smk;-ja/*hph*ml- l7f gmk What peak current flows through7 shmmmu*/ ghl;*kka- jf7lp- this device?

  A 500-W device is connected to a 120-V ac poieds 2d.ma9 ofq7- i2qwer source. What is the peak voltage 2qoed7s9f.2d a m- qiiacross this device?

  The diameter of a copper wire is 0.081 iyxr8*ced ml:ye; p5x/69rgqs nch. The maximum safe current it can carry (in order to prevent fire danger in buie y85:;/rrxs *dq ey9g p6cmlxlding 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 $8.5 \times 10^{22}$.)