A device that produces electricity by transforming chemical u-dr k/uehpymzaac*(/8 gt 14energy into electrical energydmk8ey u( 41*/cp-raat uh/gz is called a

  A car battery

  The total amount of charge that y+s rd2u(h.f guev 1z2o ve4r*passes through a wire's full cross section at any point v*.(doze1f s 2uvey2uh +rr4gper unit of time is referred to as

  The direction of convention current is taken to be the direction tx5 fz2ch g27i4d svu8xhat

  A coulomb per second is the lt xh-.q(gs 2vkuh4 zv3p4oz/ same as

  Car batteries are rated in "amp-hours." This i;6ngv8ptsdnzw ,zp,f)+ e 1n ls a measure of their

  The resistance of a wiren8 z1oc /auul2: soggv0 h a:)1hrzc(a is defined as

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

  The resistance of a wire izi a2ubp;7h;6ragq k y7da22 hs

  The resistivity of a wire d.r,wwze 9.vb640gh6 wb 1 azwelc hll:epends on

  Which conducting material ha-ro*uz l6raec au,;(sjp.:r cs the lowest resistivity value?

  Consider two copper wires. One has twice the length of the other7 ya2cyr9n/o y. How do the resistivities of these two wires con 9y2y/roya7c mpare?

  Consider two copper wires:/k -pf 6k9s0jsxzbus. One has twice the length of the other. How do the resistances of these two wk6bs jp-/z:usk 9f0 xsires compare?

  Consider two copper wires.t1h+dgy v r6*g One has twice the cross-sectional area of the other. How *r 6gygd+vh1tdo the resistances of these two wires compare?

  Consider two copper wfolnde9d /fy i*v do/.2z:ts3 j.8gwi ires. One has twice the length and twice the cross-sectional area of the other. How do the resistances of these two wires compare e tiw.dj9ds 3*f8:nf2voyl/d/g.zo i?

  The length of a wire is doubled and the radius is doublemwy dn. is// ot:xp*e7d. By what factor does the resistancd xowpin *:t/.m7s/eye change?

  How much more resistance does a 1.0 cm diameter rod have compared to a 2 tu:xoe7 y*0kp-ubv )z.0 cm diameter ro)-k :uxo 7b *tvpy0ezud of the same length and made of the same material?

  The resistivity of most common me/l,6u e3qncgvtals

  Negative temperature e(;6il jtc bb v qv+t/g4e7ctmf(k,3n coefficients of resistivity

  What is 1 W equivalent t9z(7du b.f4qxi;lzgt 91thrto?

  A kilowatt-hour is equivalent tz cpf9o)c6 ia0o

  If the resistance in me.wre2i s/.ka constant voltage circuit is doubled, the power dissipated by that circuit will. ser.eikwm/2

  If the voltage across a circuit of constant resistance is doubled,9(a u85f0iwo sw ouu8fct(kftv qm430 the power dissipated by that circuit sf0 a3t84wiwfuut k 5(ocf9m(oqu8v0will

  If the resistance in a circuit with constant current flogyp)ic5ld5 *mwing is doubled, the power dissipated by that circucmydlp*i 5g )5it will

  If the current flowing through a circuit of constant resistasixc/ t:* 7eknpd+ f7 g+canvd4 ci0y7nce is doubled, the po7e+07s:p 4* g +xftk dvyd/n7 niccaicwer dissipated by that circuit will

  During a power demand, the voltage output is reduced by 5.0%. By what perf8m2gkpb*0r fnyu:4z juuxfy*m )1 y;centage is the power rypu0:yzu nm;m1* jx k24g)fyu fb8*f on a resistor affected?

  A current that is sinusoidal with respect to time is refe7b ic46;kxdaerkp :;yn oe1u-rred to as

  Consider two copper wires each carrying a current of 3.0 A. One wire has t fc(jq1mch14ze(c t -dwice the diameter of the other. The ratio of the drift velocity in the smaller diamzhcc(f-4tjqe dm1 1c(eter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially zero at i1 8f32*i rlkw d4c w5c4bayhbvery low temperatures are referrawh iyc5ir4bw 8d c12l4 *fb3ked to as

  What current is flowing if 0.67cms,5a b t 7. sks/ 6vpd0muqor:g,;dg C of charge pass a point in 0.30 s?

  A charge of 12 C passes k pynz(f ib;63through an electroplating apparatus in 2.0 min. What is the average curreifp3bnkz 6 y(;nt?

  How much charge must pass by a point in 10 s for ther) 0m;q tl7hcdl:l)qp 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 flowin:b/ y9l (dvqonq vwi88g 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, ha9: upu72 fm0sjv 9mo nyj9k o)z51grgvs been left on for 10 min. What is the ne7 mjgp9o9frm)0z:v9vsg y 5 k1u no2jut number of electrons that have passed through the coffee maker?

  In an electroplating process, it is desired to depxnw-xd oa8*5 ygoz -.posit 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 weight of sio. yno5za-x w8 dx-*gplver is 108.)

  What potential difference is required to causedvca p6,.yq*pf y 6u7 2tjc5lg 4.00 A to flow through a resistance ofqv 5pp*afyc 6 y.ct2 6gudl,7j 330 W?

  What is the voltage across a 5.0-W resistor if the currenta6qdc:9q3yl k through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What current l (z03rckqhzi; /fy3f will flow?

  A light bulb operating at 110 V draws 1.40 A of cbe99 x7iu4 nw t/grq,jurrent. What is its resistance?7exi u4t9nw/9jgb ,rq

  A 12-V battery is connected to a 100-W resi-j i,fea5kzjclf(-1wpe( 7fc stor. How many electrons flow through the ww fcie7- ,acl(-p(1 je z5ffkjire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 in*k:e*/e enw9rx6 smdnch? (The resistivity of coppedkne*s*ew/e6: rn9mx r is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 c:c uys.gu 7+,mzf7 rcum in diameter and 45 m long, if the resistiu f 7:gc.+s umruzc7,yvity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resistivifrut 3 p1z3r(mty $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistivity e9r 2rwq*kqpv3u7il 2 $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m :m lx/g ena8dwyg-7aa s;r, 7glong, measures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m llj j33.2;tosu,(bdx qh g1u;shg6y keong 22 gauge (the radius is 0.321 mm) nichrome wire if it i 3kh ;u q1ysh2u6xbs(gdleg3jo; j,.ts 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 renyh4lb: i o 9o3b4m49;rmaa bectangular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (The resileaor939 o:nm bh 4i4;4m bbaystivity 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 an*( yb5bxd bna0d 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 (resistx- ey6n o5g6ldivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a ruyhuoxxl;e )g90dr 6 5esistance 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:a/r6y )ojbt g 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 p5k l7o1x)30 zbu lldwar6y5dqoint of indium. The resistance of the platinudkr u5xd6 0a )oz 3yqbw5ll17lm 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* og se)li qw1/t8q;y tlspy82 $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at4 dnodk01bf8p3e shdw93hajy0lp9: y 1200 W. What current will it draw?

  A 150-W light bulb running on 110 3 ioqalkzx: *cwt9/*e ,l7 durV draws how much current?

  What is the nominal resistance of a 100-W light bulb desj6 5jx h0 c1aoqop2my9c/g(lgigned to be used in a 120-V6q h9gojy(0am xcl2c5j/p g1o circuit?

  A toaster is rated 800 W at 120 V. What is the resistance of iwcogqq8. k2 x1b3 s0vtts heating element?qt qowg .82bx 0vck31s

  A 200-W resistor is rated /dq ;l1uzyb 55 cq425igtsbzj at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rat swn5ywmkwzuxm0gg-( 0 a*u a1- /m3sved at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb.9 2uh a--2+mt,tv trjmcbr2 dj2 vq2pj If it is used at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, wha7ymd)zc/sg 1 eg:x 4uvt is its resistance?

  A 25-W soldering iron runsj*/vfe9g9v b a on 110 V. What is its resistance?

  How much does it cost to operate a 25-W soldering iron fq8n 24 fuhc4dez c9*f3mleh2xor 8.0 hours, if energy cos*m23 hfnxd4 9 eec2hqf8lu4z cts $0.08/kWh?

  How much energy does a 100-W light bulb use in 8lcl.zgunut7w hrl+ sw,zlfzm h)i4i) -4.-4d.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 b0 he/ ltltua(b 0/r3yhours. How much heat energy is prod bel/ yh0tlu( 3ta0b/ruced?

  A battery is rated at 12 V and 160 A-h. How much energy i+5-i0w,qw gxnp :ab jdoes the battery store? an-5qgjx+iib w,w:p0

  How much energy does a 25-W soldering iron use in 8.0 hours0kap eosj7dt5 p ukk:i *xz*4ev5s-+g?

  A 100-W driveway lighd)o h m+bixr2;t bulb is on 10 hours per day. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost to operate the bulr mb +2o)ih;xdb.

  A 400-W computer (computer plus monitor) is tua.8g p8i fxif4z) td5 xx4itp8rned on 8.0 hours per day. If electricity costs 10 z88t i at.xii4 )x4dpf5 xfg8pcents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of+mv4*4e g3tabxu 9t pl running a central air-conditioning unit for 2.0 hr/day at 5000 W, and a series connection of ten 60 W livtgbeax 3lu*4+p 9t4mght 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 eles3 +fplr:6szsctric 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 Nil6 s3rszp:s+fchrome 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 thronu6j (mwzgs 66ugh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costskhlhftl3 7dda iv1 6f/g21 rg+ $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 a)h u)ef/v1)dxh noh .the rate of 2.0 hp has 60% efficiency. How much current.e 1d/x)ah nf h)vohu) does it draw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 12vd*jcpe jzb 4/y0wyxt ,3rakb q,58u10-V ac power source. What rms current flows through tverab q1 5u3b dc t /p,yz8,4w0yjx*kjhis device?

  A 500-W device is connected to a 120-V ac powe bx+)pkozgwi/5p n9 q*r source. What peak current flows through thi/qobp)9 ipk5wzgn*+ xs device?

  A 500-W device is connected to a k nm-qv*x h1(u ml7xf5120-V ac power source. What is the peak voltage across this7qfxx 5*h-1mnmku( lv device?

  The diameter of a copper wire is 0.081 inch. The ma1cb/z+ yn b kqmb2o0g9m8ok3oximum 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 +n3km /0oz1gmc8okb b29bq yo number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)