A device that produces electricity by transforming chh nj yulo8*.o9pilli(nmbh00,( bf:e emical energy into electrical energy is call0m n.8uh,hfj(b0 lbin*oil (yel:9o ped a

  A car battery

  The total amount of charge that passes through a wire's full cross sectiob5lni4bn eq h*o5/d59 c dd:qvn at any point per unit ob:d5 9/cdnnil55* 4d eqvho qbf time is referred to as

  The direction of convention currp+xn1g -8in al3 b u ozrm.ng59oh8km4ent is taken to be the direction that

  A coulomb per second is the/mxa me9 70um.r/-(djhqo i rf same as

  Car batteries are rated in "amp-hours." This is a measr:*cqf)y0 zk;mj:tqb hys 6o.ure of their

  The resistance of a wire is defined awx .;wsg*6ko as

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

  The resistance of a wwe1-h v*r28kl 0 e anj37wywgtire is

  The resistivity of a wire ;d )dpm93 u5w 3mx t(.bxnuc*doh +bmydepends on

  Which conducting material has the lowe 1xqy k*llz6qe x3;7omst resistivity value?

  Consider two copper wires. One has twice the length of the other. Hw 9fopv,99t ulow do the resistivi9po,vf9 9tuwl ties of these two wires compare?

  Consider two copper wires. One has twice the ll4bkvnavw9ianjb y t3u(/.)re:8zz5ength of the other. How do the resistances of these two wira9 (4)vivlb8jbr:zk3 e y /a5z. uwnntes compare?

  Consider two copper wires. One has twice the o4ik3 c +7fadbcross-sectional area of the other. 47do+k i3 facb How do the resistances of these two wires compare?

  Consider two copper wires. One has twice the length and twice the cro yg /g bc-ceo3js1 dub8q5r+s3ss-sectional area of the other. How do the resistances of these t3q u bcsbgegjo+5/y- crs18d3wo wires compare?

  The length of a wire is doubled and the 2 y cmh,rl:9vft8 dq4nradius is doubled. By what factor does the resistance c2vr q4tc, :dl8ymf9h nhange?

  How much more resistance does a 1.0 cmn jy9zh35l n:f+vzp07xppgo on(cbn2yt88 z5 diameter rod have compared to a 2.0 cm diameter r( zn95 jf7yp2nhxogoyn3:cbvlp 0zn8 t8+ pz5od of the same length and made of the same material?

  The resistivity of most common metap1q.cuaoh:o+n y zb.ghu 8 k34ls

  Negative temperature62)wj cq qzq(h coefficients of resistivity

  What is 1 W equivale/pr2.b)*yjd5yp;v *y*o vbab tmo r8ant to?

  A kilowatt-hour is equivalea),p8oh f :bkwnt to

  If the resistance in a constant voltage qn6nqb s*4cl7 circuit is doubled, the power dissipated n7l4bc*6q snq by that circuit will

  If the voltage across a circuit of constant resistance is doubled, thb fbsk fdg qma3:p2thlnww 8awq8r5-yr160;- e power dissipated b8l6b r a fq snfh;ywp3k1q5 8ww2:t-mr-ab0gdy that circuit will

  If the resistance in a circuit with constant current f8mur68 hw l. po zv1+mki:*wkhmw6o1llowing is doubled, the power dissipatewu wl1 khlz m rm8+* 61vkopw8o:.6mihd by that circuit will

  If the current flowing through a circuit of constant resistu53jr 7 qqhxb*f*4nr(tjpy+rdqv n ,. ance is doubled, the power dissipated bq .v+,jry n*nprxdtu q3b7j* (h5rf4qy that circuit will

  During a power demand, the voltage output is reduced by 5.0%. By what pegbsus wj(9x ,.rcentage is tss9jb,w(g.x u he power on a resistor affected?

  A current that is sinusoidal with respect to time is referred t)kxm amc5 s2l1h p2a3oo as

  Consider two copper wires each carrying a current of 3.0 A. One wire has twico6-t2vwiksnl7lp9 b mtn2md.1c ; 9xbe the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to thato-9m6inlknwbmtbx 71dv 9tc.s2p2 ;l in the larger diameter wire is

  Materials in which the resistivity becomes esspt6rfcfrbp.*) ix3 v*l x+ kg;entially zero at very low temperatures are referred t p)36 xcp *k.g+i lxr;fbtfrv*o as

  What current is flowing if 0.67 C of charge pass a poinr0xx* jbel,7on5e*4ex)l c agt in 0.30 s?

  A charge of 12 C passes through an electroplating appa, p4wmkb2. rtvratus in 2.0 min. What is the avera 2wtrp4.mv ,bkge current?

  How much charge must pass by a point9cw:p 0s5xquyk0enr )vt7+ nq 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 flowineafh- 9ck7 )kmg 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 currevjt kyu:km se9m3t +z v r(92e2iha*-wnt, has been left on for 10 min. What is the net number of e2r(y ikmhaj :v3 9vs-w9zem+t*e2u tklectrons that have passed through the coffee maker?

  In an electroplating process, it is desireuv*6ww 4vb8ono 9+z8der 6wxeud9 iab)f+ p+cd 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 twa4xd+b*e9+iv6w68 9zunoefdr u+w8op) b v che atomic weight of silver is 108.)

  What potential difference is requi8cc l;; b4vjiwred to cause 4.00 A to flow through a resistance ofj ;v8 lib4cc;w 330 W?

  What is the voltage acros-vb yop n ntv ysn)cme3p(0ja.32q/k+ s a 5.0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What current will f xo)h*.ia2 pyflow?

  A light bulb operating at moktz3znc(z*dca5 ) 2110 V draws 1.40 A of current. What is its resistance?n5a*td 2z c (kzzoc)m3

  A 12-V battery is connected to a 100-W resistor. How many electrons f-s+b3djvpg6 1;ybz/+ju tks w low through the gwz +t/ yds3 +vsjb-uj6 1pbk;wire in
1.0 min?

  What is the resistance of 1.0 m coprxhs*b g0o4ta,*yw h0qg-ac -3bg+c zper wire of diameter 0.40 inch? (The resistivity of w,cxar+t4- -z g ysoq3hbgg h*c*b 00acopper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diameter6oy4pr m;yi y)/au+uq and 45 m long, if the resistivitq/ruo6y uya y+)i mp;4y is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resistivtgo ac(e.s 4*uity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (r8n m0v b35evuwxbdhb02; c+jkesistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 ohm6n+/sn./tz19ee/mhmto d x.+g he5z z,omnkys. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius is 0.321 mm ,byh rsv1p8qi,/cz4visr2n s) lw)1f) nichrome wire if it is connected to a 12.0-V battery. (The resistivity of nz4yfc) l11s/,vqshiprr) 8 wn,i2sv bichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cross-section, 1.0 hfys1n. h-1dtcm x 2.0 cm. What is the voltage drop along its le ntfh1h1. -dysngth 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 uu0b.uyx-kp*wy -k5n 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 (re n .6kt9 on:po;e8fsbksistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resistxl. hyw8s2cq/d+u2jhance 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 resistivzx:1f,43f 8xoj p rkbvomr4;ij kws6/ ity 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 indiumf669e6z gjqjl4 hd b+g. The resistance of the platinum wigfzb66l+6gq 9 j4dejhre 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 f2-dxpf k-v:a $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is ratedq4km wlo.k) u. rq50ne at 1200 W. What current will it draw?

  A 150-W light bulb running on 110 V1 -xfvbc* arlmmu( a305fsycz1*; wz/ vncts4 draws how much current?

  What is the nominal resistanbt8bb(b0y i 3lce of a 100-W light bulb designed to be used in a 120-V0 yi8bbltb3b( circuit?

  A toaster is rated 800 W at 120 V. What is the resistance of it 4;ow*v -lso8yo;my yfs heating element?v;l; fy o*o8wyy o-4ms

  A 200-W resistor is )ki.xkupj 4 vf,m2(he /nyf i3rated at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated at fqseg06g .ne r/h)cr +f, /qfk$1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used a1dt..2xyiv )sk1 ntnwt 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, what is its resistance?o. azr 6/h5vgd

  A 25-W soldering iron runs onj6o24hky7 bain,a vj * 110 V. What is its resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0 h9 1 i8ea0txdh1n.pljxbxgvbu5 zs3. +ours, if energy cosps bvu8ia xg1d13xhb9 .nlzj0+ 5t.ex ts $0.08/kWh?

  How much energy does a 100-W liggx ef 6+5 :lnc,x2kl3w gyaqs+ht bulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How much hnqkmbhxv*1e e)-9u +u 6twm+qeat energy is produmt)9e1-kue + +*wvnxuhb qq6m ced?

  A battery is rated at 12 V and 160 A-h. 2:qh -hbg)5/+kmyl xeuhjl *qHow much energy does the battery store?uqh:- hhbql g5lk+2x)* e/myj

  How much energy does a 2aah*:gm548 djf p4wyn 5-W soldering iron use in 8.0 hours?

  A 100-W driveway light bulb is sgqk lkyj: /2k in*59jon 10 hours per day. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimate the annuaj *2knks ikq5yl9j/g:l cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned b8 d.igqu5m xio-9-f won 8.0 hours per day. If electricity c 5u8-iigfowq9m x. db-osts 10 cents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost g9j5ldwi;w .5wumzb +of running a central air-conditioning unit for 2.0 hr/dg+j9w d5bwz liu.wm ;5ay 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 generates heat anb-kcamooq92qe. g11so lgok2j 5g ;( t the rate of 2.1 kW. The heating element shorts outjgsn2 o5kaq .-q1k;2(g 1m bl9gceo oo 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 through c:ikry 2*mec9g: a(zf $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs c 8rj e 8nvtgsjd9;07m$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% efficiency. How much cu+u7gc (-.yz:,kxpxtm v0xquarrent does it draw from a 12x(7ut z+ck:u .,xmav-gx y0pq0-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rms cut787hw3ru5ayknk 4ejiz. xy,1 pb8 i prrent flows through this device?5jin x7ty8eh.kruwp1 7p3 ,yzbia 48 k

  A 500-W device is connected to a 120-V ac power sv4w ;;/h )ehsgid:r yzource. What peak current flows thr / 4; wr)sd:h;vziyehgough this device?

  A 500-W device is connected to a 120-V ac power sourkhh 9jnep+/n 9ce. What is the peak voltagkh jnpe+/ 9nh9e across this device?

  The diameter of a copper wire ii4 idx*pfik(6l.skv 12lk syu1 pof+7s 0.081 inch. The maximum safe current it can carry (in order to prevent fire dk 6pvifo1kys ls fip14x*i7.(l 2k+u 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 cubic centimeter of copper is $8.5 \times 10^{22}$.)