A device that produces electricity by transforming chel.3*3n ah,gr dv u8fsvnslvw800q r4hmical energy into electrical energyd3*fr8a,hr03nsvu8w. v4gl 0 qhnv ls is called a

  A car battery

  The total amount of charge that passes through a wire's full cro,su//a bp 6wdsklf9rir:30z wss section at any point per unit of dw9rlaikp: ss, zfwbr3u0//6 time is referred to as

  The direction of conly baerf *wux:q, (1e(vention current is taken to be the direction that

  A coulomb per second is the same jq2: nime*8kq 8.5nkobh, ljnas

  Car batteries are rated in "amp-hours." This is 0c -xjw,rywmx, q7yd 1a measure of their

  The resistance of a wirnboot; :n;h,t- y1nw ne is defined as

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

  The resistance of a wire is ,:f9rna36* a9 pesfknjaj.vd

  The resistivity of a wire depends ob+:. upm*j/.urqu d w/l nyn2cn

  Which conducting material has the lowest resh+n f;enfwd4an 3e 3g2istivity value?

  Consider two copper wires. One has twice the length of the op7csd1jk/ ( rtap(;y c nqhu32ther. How do the resistivities of these two wires 7a prjd2cy1s(/thn u3cpk(; qcompare?

  Consider two copper wires. One has twice the length of the other. How r uux6y+(lzjg 6sdj)a4u h *g+do the resistances of thg hd6ur6+alj)sj*uz yu4( x+gese two wires compare?

  Consider two copper wires. One has twice thme ,xx - lo.,rwv8p0 kno 2,tqdiy;w8fe cross-sectional area of the other. 8ow,80etq -vml; f.nywdo ,xkxr,pi2 How do the resistances of these two wires compare?

  Consider two copper wires.m)d 4ekk9y,+g:og0r8x hys o4*tusz t One has twice the length and twice the cross-sectional area of the other. How do the resistances of these two wires s 8e*dx9:g zrto y0khog m4 ty)u,k4s+compare?

  The length of a wire is doubled and the radius is d fn5.hlag24d joubled. By what factor does the resisd4 f.njag2lh5 tance change?

  How much more resistance does a 1.0 cm diameter rod h7mnc 7e9)sbj tfwiej ;w+wz70ave compared to a 2.0 cm diametejmte; 70 79z+w)wcef7sji n wbr rod of the same length and made of the same material?

  The resistivity of most common me ay62xk1ysy ddlb4h;v9.o- bjtals

  Negative temperature coefficients of resisblua1yu :5l(q pu0l u6tivity

  What is 1 W equivalentwzs:aob 9sg2p *51i fgda1tdhu:9+vc to?

  A kilowatt-hour is eqb2qbs 1 rgi;1zuivalent to

  If the resistance in a constant voltage circuit is doubled, the power dissigs m:t6t1 lb0jpated blgjtbt0s 6:1my that circuit will

  If the voltage across a circuit of constant resistance is doubled, the power d ctl)i( /km8elvamc+;issipated by thai+l8vk (a/) tmcc e;mlt circuit will

  If the resistance in a circuit with constant current flowing i.0e5. f0 vesd/scct bys doubled, the power dissi /0..v ssfd5 tbye0cecpated by that circuit will

  If the current flowing through a circuit of constant resistance iagvba 43vp (ka il)v(9e+eg. os doubled, the power dissipateoaa(pgl ka 3gv9+)bv (e.ve 4id by that circuit will

  During a power demand, the vol mko18vmepw6*1w m (vb-zsx 4htage output is reduced by 5.0%. By what percentage is the power on a resistor affectkvp ze84b* 1mxwov m h(6m1ws-ed?

  A current that is sinusoidal with respect to time is rj)tc6 ieotb6ac10m 7ah .4hp feferred to as

  Consider two copper wires each carrying a current of 3m y*rgeszwt1-nk7i m xqgx;d080-:y w.0 A. One wire has twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to *zgt--nrg7xym 1k:w0 iws8;e 0yqmxd that in the larger diameter wire is

  Materials in which the resistivity becomes essentially zer,xdu:zupymwez48e)zf g x -; g-yd-y. o at very low temperat8xg e-yz;fzgu,pd -)e-m 4.y wx: duyzures are referred to as

  What current is flowing if srbe s qla2,tw7;yz i26+xe.e0.67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating apparatus in 2.0 min. Wh 7fi/3 vldjwgjo85ky4u sf, k(at is the average clu84fojw i, k3f(d5sg /jky 7vurrent?

  How much charge must pass by 4i9kj.72l, bsffx j lla 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 flowing z+ljwp*2)pvp )x j i8cvo27atif $4.0 \times 10^{16} \; electrons$ 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 ffkcqj 2(0em:f:eq r czas/-8 draws 13.5 A of current, has been left on for 10 min. What is the net number of electrons that have passed 8 j/20smf k:q-reqf(f:czae cthrough the coffee maker?

  In an electroplating process, it is desired to deposit 40 mg ofone-w1 n 1q(bo 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 weight of 1n qb-e(1wono silver is 108.)

  What potential difference is required to caabk; -2pvlr me0. e4u89f fcbruse 4.00 A to flow through a resistance of 33 l2m4.pebvk;-8f0aurecrb 9 f 0 W?

  What is the voltage across a 5.0-W resistor if the cuafkzn6s ,)*;ymw8h hwrrent through it is 5.0 A?

  A 4000-W resistor is connecte gzn,jz 3(b )yl4s9kjld across 220 V. What current will flow?

  A light bulb operating at 110 V draws 1.40 A of current. What is its resistance h2i05)-noy b q.tmjyh yymjboi02qtn).5 h-h?

  A 12-V battery is condj 306x d1a-nz0qnwbo nected to a 100-W resistor. How many electrons flow through the 0djzq w- 6nb1dxnao 30wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 7d(hsr wjvcw( yl )2y9inch? (The resistivity of c79 lr h(vwwy( c)djys2opper 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 lon;4 lwu :) jacrpps50lhofv-l4g, if the resistivityul:4 oa0;pchr- j) vlfslpw 45 is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (re*+qb1 o+zvp ( n8bpnfssistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire 4lkotg2dpjmhfq6 kdi)3:gvo2i )6sd6d2 8bd (resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, ml-t:j43whw/6pjfj plfwuy c-t/tp +) easures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the ers n 5 ;m-p-myo:il /o+*;q xyuxrg1vradius is 0.321 mm) nichrome on;r;rl ox1*e+:ymp-/gq v isu 5y m-xwire 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 cross-sectio7e/wp-,, mi/vgl9h ny:zg s jtn, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carrzjsv,,7i/- nlpe/ 9 w gy:mtghies 4000 A? (The resistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wirozsrl; w4 b8cl0ep 6u+e has 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 copper wim4i2k f2 0gdzjl o3,wnre (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 resistankh 6+zl* a(iooce 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 coeffi cj-el+,rx:pg9xn r5u;vo y( lcient of resistivity 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 inrp s,hfq6ng ls:e h.f/q.w3(sdium. The resistancswe:,(fp3g6r fs.h qs.h ql/ ne of 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 througoul-t ( m1xl6k*zj 4nt9az/ajh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. )tlgk09k36e lixx ;n v What current will it draw?

  A 150-W light bulb running on 110 V draws how much cuzk.alxs+u ; o3rrent?

  What is the nominal resistance ofdg: wts(ja/a;n.j1- uruzknvxj.j 0 * a 100-W light bulb designed to be used in a 120-j*knz1w .n/:0 -sa xj.v(rt dgajj ;uuV circuit?

  A toaster is rated 800 W at 120 V. What is the resis5 h 0d7(vgfk 4emwe8iptance of its heating element?(kme 04vhf 8p7e5igdw

  A 200-W resistor is rated at 51v6))va o:jqkzbul)d d9wxg$1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated at 6ywj s,(jpc,2zxn i/p)bh,r z $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If 1efhdvl/ :36sut g-ge it is used at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is usb9-6 fs*pw;pe t)2rthamk .dved at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What is its wvi/kk: y-zobb0foj;c- cxha,f /98b resistance?

  How much does it cost to operh6hc 5*ec; ahqp 35 fluinqz-dk8-hk9ate a 25-W soldering iron for 8.0 hours, if energy costkh c6ih5kza 9h;3-d5qh*e8 - plncfqus $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 hour2/h7g0xd ot yes?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How much heat enervl0xy ipvym2ge / g4, x5m2uu6gy is produm2 ,gv /x v5y26pge4ymliu 0xuced?

  A battery is rated at 12 V and 160 A-h. How much energy does the battery zo p;vb c7kqirv9)-.c store? zco-c ;ripvvk.) 9qb7

  How much energy does a 25-W soldering iron use ins,k9azmn(a vuf w q).rf opj w a68d1xs9)1fz8 8.0 hours?

  A 100-W driveway light bulb is on 10 h:ltizm k 627chours per day. Assuming the power company chal:6 k m7hitcz2rges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 h x.yt5u* ) tp0b(oz y0jzhwbz) bvu6v x*ttu2,ours per day. If electricity costs 10 cents per byu*t x ,0x6z5tbh vv* )j( t bzw)t2uz0upy.okWh, how much does it cost to run the computer annually?

  The monthly (30 days) elect-h gz* pm3z47rguw3db ric bill included the cost of running a central air-conditioning unit forh4g* 7 -bdpzrugmzw33 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 operates on 240 V and ge 0uhme mzg,12knerates heat at the rate of 2.1 kW. The heating element shorts out and, in repa2g 0zmm,k he1uiring 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 througq49(n1yj fwds h $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs9 iadz e5jhxefo6,k 80 $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 wor06-nuwdjml n7k at the rate of 2.0 hp has 60% efficiency. How much current does it draw from a 120-V lij7d0m lnuw- 6nne? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rms ly/ 0 1 1ncrk56aaihf f goeg/0cog,o*current flows through this devicegai*/1eocgo ahk/y1fgf,6 5 ln c 00or?

  A 500-W device is connected to a 120-V ac power source72id wcji7xx* z(h(zi . What peak current flows throi *i(z(jcd7w2 7zih xxugh this device?

  A 500-W device is connected to a 120-V ac power source. What isi2*:ugtpc- bkrd81r g the peak voltage a2utki8gbrc pr: dg*-1 cross this device?

  The diameter of a copper wire isx f,dk(h)l9nmw.zj l3 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 velocity of the electrons? (The number of electron carriers in one cdmw9xzn .)kl , hf(l3jubic centimeter of copper is $8.5 \times 10^{22}$.)