A device that produces electricity by transforming chemical e; z9 cnxv-f6dsnergy into electricaln- c;zsd xvf96 energy is called a

  A car battery

  The total amount of charge that passes through a wire's frah (p8f 9cw6*alc/ ypull cross section at any point per pfw8a(ly/ phc*96rca unit of time is referred to as

  The direction of convention current is taken to be the directii/ 3:v:qtaokke i2:wdon that

  A coulomb per second is the same as 3m(iw v4tvwnuxw+hf0x q-: b+

  Car batteries are rated in "amp-hourss sw49aavmm0j:(: jn b(ykz(s." This is a measure of their

  The resistance of a wire is ph /asdzll6,+3chp3j 8 qwt5vspc:ur .9 7 oxkdefined as

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

  The resistance of a wirijxf/wwe ec1 2vg523o e is

  The resistivity of asg yid;4+sbc* wire depends on

  Which conducting material has the lowest resistivity va9uiufhe3ibo:*- f g7jlty+ j ,lue?

  Consider two copper wires. One has twice the length of the other. How d5 x,jpn 4e6d8x smz od0h:cl;ko the resistivities of 5zs;xd 6:d ek,0hpmnolc4 j 8xthese two wires compare?

  Consider two copper wires. One has twice the length of the other. How do the rz.6*m bq ycmo*eeb3p.esistances of these two wi3*. bb epz .ye*cm6omqres compare?

  Consider two copper wires. One has twice the cross-sectional area ofrtcaar( *lvr38 sl-j0 the other. How do the resistances of these two vlra c8(t* sr-03ja rlwires compare?

  Consider two copper wires. One has twice the length and twice to2 il/8mfn u6fhe cross-sectional a6u mni/ofl28 frea of the other. How do the resistances of these two wires compare?

  The length of a wire is doubled and the radius is doubledid*k udx 9*i+k. By what factor does the *ix+dkiu9*dk resistance change?

  How much more resistance does a 1.0 cm diameter rod have compared to y /qkz) ml4lvo 4/f y.mwpz1e9a 2.0 cm diameter rod of the same lengl lqyfo)vkz4 wmpe14mz/./9 y th and made of the same material?

  The resistivity of most common mefx+7mut/e vtce6+d 4rtals

  Negative temperature coefficients of resistivi0wbtw i0 z1uz +,butpec d*e)5ty

  What is 1 W equivalenje :ng;cp *k3gt to?

  A kilowatt-hour is ejx,: iudmm azhs: e;: ,sah+g/quivalent to

  If the resistance in a constant voltage circuit is doubled, the power dt r m4r+cm d)5kk vo2ebzbp,9(t uc0s(issipated ,kcse)29 mc+5 (b0v zp roku(4tdtbrmby that circuit will

  If the voltage across a circuit of constant resistance is dou:-nz khexlp vic2.k9c+*p ip) bled, the power dissipated by that c+ k:pl.kp9 np c v2c)*ieh-xizircuit will

  If the resistance in a circuit with cons*dow k(ep*c wkd54:i stant current flowing is doubled, the power dissip4 :ds*wk( ewdkco i5*pated by that circuit will

  If the current flowing through a circuit of constant resistanckl c zsty h*+9:/lrx*q7qdz. be is doubled, the power dissipated by that cilzly sz7qk:.b/htd x+rq* c9*rcuit will

  During a power demand, the voltaguckjv li jp5,t;;aqw4zalg -e/ 2 ;/ege output is reduced by 5.0%. By what percentage is the power o ; w/jp4;avkiq-lct,ajegzl/g;u2e5n a resistor affected?

  A current that is sinusoidal with respect to time is r54lpu : :o-uvg q jd/;hpx/rdreferred to as

  Consider two copper wires each carrying a current of 3.0 A. One wire has tec6u oqf/;gu+(y ;d dkwice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to thu +;(yfque/gc6kd d ;oat in the larger diameter wire is

  Materials in which the resistivity becomes essen)ifq, cxkv 2(3w-lb azi :k/hgtially zero at very low temperatures are referred:liig2)f 3ha ,k/wxv(-kbcqz to as

  What current is flowing if 0.67 C of charge pass a point in 0.30 s?pe 14zfp2mdwa : te92p

  A charge of 12 C passes through an electroplating apparatvily p*p*/f*yc1+;+qd bg znvus in 2.0 min. What is the average cbcz;ivyq+v +*fl d pg*pny/1*urrent?

  How much charge must pass by a point in 10 s for the current t .*hku;.fp j5*vbahjmo 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 if u7ry;-(jv l ,c,fjwme l2m;pe $4.0 \times 10^{16} \; electrons$ 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 c 4b0bukff -),1t cmu.l0 uezex9u.h auurrent, has been left on for 10 min. What is the net number of electrons that have passed through the coffee maker? 9f 0ea)zxuebl -.ucuuum0k h4t1f,.b

  In an electroplating process, it is desired to deposit 40 mg of si ggx / kk44*zvb/t-o*zddz p:ylver 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 ig /z*-pk4gbx*tz dkyoz4d:/ vons are singly charged, and the atomic weight of silver is 108.)

  What potential differjj7ch xc; f 0a2ks;;exf9t4eaence is required to cause 4.00 A to flow through a resistance of 332xc ; j4ajacxf;e0 tkes7f ;h90 W?

  What is the voltage across a 5.0-W resistor if the current through it is 5bul 1lrvo ;nu00lrv-9 .0 A?

  A 4000-W resistor is coi/;jizy-zh:5 sgt6 fqnnected across 220 V. What current will flow?

  A light bulb operating at 110 V draws 1.40 xs t7rco7)usdk9l. a:A of current. What is its resistance9o u tr).d7:acsl7kxs?

  A 12-V battery is connected to a 100-W resistor. How many electronz)65hd :iix.mc.bl lns flow through thx 5l).nbm ld :hiicz.6e wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? (The resis loq i)m e,1g6ujd)d06,ocrj h,xvu n5tivity , j m)evuio,n ql),xrjh5o1g0dd 6u c6of copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circularx.m8bjpb -o,rh8a vq.b s1;jm rod 1.0 cm in diameter and 45 m long, if the resistivityb.s ph.8 r;bm x1oqj,b aj-mv8 is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resilt40 uw*ht9f ai;fly 0stivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistivity9e .9aum0x 8+uapr fv3ecgrj+ $1.68 \times 10^{-8} \; \Omega \cdot m$) 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. e ndjt*4h0( ab What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (tp3okyoz7g :u06(mo8 khhx-sb. kw s-mhe radius is 0.321 mm) nichrome wir z7 -m06ky3owb. mo u(gpxh-hk:8 oskse if it is connected 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 crg; )nucow +9pwc4:ekowex/8 voss-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 iu4we/vwc ) o9cg;e+okxpw:n8s $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire has a radius of fd(6:r 0 kd lq3n1jtsfqdu0g80.50 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 wm:q.wop48e*0btmg m $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resistance c5p09u rvuud2of $18 \Omega$ 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 z232/szy rdfvplatinum 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 determinejzu0jg j6:t5,pm7yh z the melting point of indium. The resistance of py6,0:j t zjm7uzjg5h 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 througt;je;(fjnr0ba9u z7 o h an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. cpp- 9oe,4 +vb++ai qhln. ogo What current will it draw?

  A 150-W light bulb running on 110 V draws how mu2 nn/ui.tt7ww ch current?

  What is the nominal resistance of a 100-W light bulb designed to be u;,wdj2 9,f q8pp twxko:fumphx*l m3 -sed in a 120-V h:;9lkmf* utqjp, w3mf8 xwp,xod2p-circuit?

  A toaster is rated 800 W at 120 V. What is the resistance of its heating elj c (8lbvir*3fn +9mj 6tf- -*dg fnc4tza0augement? j(4d0+3ggucjaf6a8irltcb9f* n - mt-zvfn*

  A 200-W resistor is r,4ygkew 5fm06hetw io1 e/ jm/ated at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated a2cr w2 kgteq)8t $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what current does nom,u(gqd m:l m x: 3i:io7xp,it draw?

  A lamp uses a 150-W bulb. If it is uog3i,n7:tgtm sed at 120 V, what is its resistance?

  A 25-W soldering iron rubq*e-9p)c u vuyug6oa8 y2 q3zns on 110 V. What is its resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0gtt /np uj,(0cbk4 0i0 qb:fgu hours, if energy ckc/g gq:ptfj 4u ubt0bi00(n ,osts $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0c-g;xf0dx. zs hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How wo,mp4aj5acy+ 3 p5v/wey3m gmuch heat energyay 3ay/o5jpwwgc+,e 3 5m4mpv is produced?

  A battery is rated at 12 V and 160 A-h. How much energy does the ba,y(5z;2xk.zbxjyf n wvb.5mc jv/;v mttery store?zybbj;,k2/j xv.c x.; vf(w5myz5 vm n

  How much energy does a 25-W soldering iron use in 6v* b0bdoxx*p 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming the power company c)bz w,8qjv s-b 0o (d7orm0xnkharges 10 cents for each kilowatt-hour of electricity used,zqjknxm svo 0w(d87 b)-o0br, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hoh gz*2d0uk0; *wrhkj(y 5/ py2o)5mx pvrify durs per day. If electricity costs 10 ci* yz2 dwyh(g5dp0kfkyru v;0*)rh j2mpo5x/ents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of runnixx1p 7wa7dhl 9ng a central air-conditioning unit for 2.0 hr/dax1x7hwp7 ld9 ay 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 operates3 2, ouhs2djauh*p y5u 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.ahh ,u2 o5jy*32du ups 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 thrx*skrjo2 6 -ppough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs9wf-v(s/qwvlp*. i u 2etix9 g $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 ratgb-rq igur6nhld og),0 wo 3*.b du cx,z*x56me of 2.0 hp has 60% efficiency. How much current does it draw from a 120-V line b.ro*umigh66 xzr xgo,0lq-u3bwc,g d)n *5 d? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power soureo+mui+6-2fo llewq* ce. What rms current flows through this devicelwoeu+m-+*2ol qi6f e?

  A 500-W device is connected to a 120-V ac po iiz- 4qp1y+kower source. What peak current flows through this device?- i4op1yq +ikz

  A 500-W device is cop/zy/ 2g5u vyunnected to a 120-V ac power source. What is the peak voltage acr//upuv g 2yyz5oss this device?

  The diameter of a copper wire is 0.081 inch. The maximum s -:.xu))ggf03 zf jtycqke :maafe current it can carry (in order to prevent fire danger in building construction) is 20 A. At this cua)3u:)yffez q 0j- kgmxt.c g:rrent, what is the drift velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)