A device that produces electricity by transforming bkvex8c,/ 4 vnchemical energy into electrical energy is called 84vkce, bv /nxa

  A car battery

  The total amount of charge that passes through a wire's full cross sectio+k+jle j u81tpn at any point per unit o+ pjkt u8j+l1ef time is referred to as

  The direction of convention current is taken to b2.c*fkh( +q7 bgyrmrje the direction that

  A coulomb per second is the samdbs10gucngr eqi7jw )-bc6(7s,nd. xe as

  Car batteries are rated in "amp-hours.";.)y*fk c: ua5g++orsjwx l.s.fu ras This is a measure of their

  The resistance of a wgue(b n8z zy;u/w,ju/ire is defined as

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

  The resistance of a wis w:;kzoy9k8r5 u w3jjre is

  The resistivity of a .e7tdby7 4zke wire depends on

  Which conducting material has the lfff(w o hp.:d9+5elctd ixh)3owest resistivity value?

  Consider two copper wires. One has twice the length of the other. H fpve(i 27k8 psq9myky8/,mf xow do the resistivimy ek,i 29v pykfx8qp7ms(/8 fties of these two wires compare?

  Consider two copper wires. One has twice the length of the other. How do the r*rhsnt(r)( yooy) / tbesistances of these twr/bot )n*(y)s oy(hrto wires compare?

  Consider two copper wires. One has twicvlf d *66oi)cde the cross-sectional area of the other. How do the resistances of these d6o*f v dcil)6two wires compare?

  Consider two copper wires. One has twice the length and twice the cross-sec pbd;c5t 5* vkbtgd55ftional area of the other. How do the resistanc*kptv5gcd5; 5 tdbb5fes of these two wires compare?

  The length of a wire is doubled and the radius is doubled. By what factor dow. 97ty4:d k5zsioaqdes the r 9t4dkz7 :qysa wd.5ioesistance change?

  How much more resistance does a 1.2l l 3g 2zj x90 j4zwsnkykst(u;c+71ggzj -hz0 cm diameter rod have compared to a 2.0 cm diameter rod of the same length and m lgg2zx(jjc kh; 1z2t-l4 z7s+w3zyknujg90 s ade of the same material?

  The resistivity of most cdi,.dmxs 78pj4 th5ph6y5pb0f+ cb zcommon metals

  Negative temperature coefficients of resix i k)ooyp2;ov1u 9vg;82kq rastivity

  What is 1 W equivalent to?jd5vzraf): m*

  A kilowatt-hour is equivalent kw1wyxw8c,s(w9i9i(af 43 txr xa3um to

  If the resistance in a co q, qf6e4kyez(e7ro*r nstant voltage circuit is doubled, the power dissipated by that circuitro6 ye4 f,k*q7(erqz e will

  If the voltage across a circuit of constant resistance is double04-o jj8hrovfd, the power dissrvjh-4j0 o8 ofipated by that circuit will

  If the resistance in a y.rqc4 trids9ws-* 8 0hzm:q vcircuit with constant current flowing is doubled, the power dissipated by that c *rv t9:zym48qqhs .-r0 swicdircuit will

  If the current flowing 0l4v;v-ig:qgcp6qh l through a circuit of constant resistance is doubled, the power di -l:gvpq 4g;q0c i6lvhssipated by that circuit will

  During a power demand, the voltage output is reduced by 5.0%. 8u2uks jg r hgm88maz, yvukp:9,++bl By what percentage is the power on a res:8 uus,8z +gvhjb u a,8g+rkly2kpm9 mistor affected?

  A current that is sinu h;j. ly(m;ybosoidal with respect to time is referred to as

  Consider two copper wires each carrying a current of 3.0 A. 0r)+d meb dm +pgm,9kg One wire has twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to that in the larger diameter m)e+,+g g pdkrbm0md9 wire is

  Materials in which the resisti6rw ;:.rl uoc;amvhm.f j 1lc8vity becomes essentially zero at very low temperatur mrh flv6ma ;.lcjc1w8ruo.: ;es are referred to as

  What current is flowing 9j+e/vrv0iq yif 0.67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes through an bevl: 3nn9,.beyfa 8d electroplating apparatus in 2.0 min. What is the averag9bnlev:3, b8e ayd.f ne current?

  How much charge must pass by a point in 10 s for the curr0y t0- 8,iksnk qaf/vm(*ew dgent 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 i e (da0e/lrp i1m(c+wf 5yl1oif $4.0 \times 10^{16} \; electrons$ 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 been left on for 10e nmxq(6y rsry1ti6n 6*16 kev min. What is the net number of electrons that have xv(qri1 ren6y1e6st *m k y6n6passed through the coffee maker?

  In an electroplating process, it is desired ia bz9g w,/g1h/qenmqux;x .)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 deposia)n/19 i; gxqeuxq zmw,/.hgbt this much silver? (The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference is require16vkece6u, dr d to cause 4.00 A to flow through a resistance of 330 W?6, edc r1ek6vu

  What is the voltage across a 5.0-W resistor if the current throuxp 3rum2-um2kci 5 +uzgh it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What curren 3xv b38fmr8 b ui1(m42yzddmbt will flow?

  A light bulb operating at 110 V draws 1.40 A of current. What is its res;066ck 7d rev( lsasssistance?76s scelrkvasd 6(0s ;

  A 12-V battery is connected to a 100-W ,) h,ilgjkd +lkug0bhpecs/8j 359 t tresistor. How many electrons flow through the wire in +3de,pb )gijcjh9t/tu0lk5k ,h lgs8
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 in,x.jzjsr4d2 +tk8 ,3 ;smf -t p gzhnxt,mpz:sch? (The resistivity of copper.d2mpsx-sm pr4+tjn3,z sfhj;tzkx,,g: 8zt 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 lo*hoazlfgv, 5 dt 3fn5.e7iww9ng, if the resistivity i5 aflo.9n3 githe5v wzw*d7 f,s $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of coppeorpwj.x6g w6f*60h a0tlhfc 6r 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 (resistiviu(vfsw5di;*y (x )0o hupgjy1ty $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m longfsi5vlcl 6b 8 -wgxysh733 -vb, measures 0.040 ohms. What is its resistivity?

  Calculate the current througz27tu7.no0sr 7gc 3(qldxbdzmgt; i1h a 10.0-m long 22 gauge (the radius is 0.321 mm) nichrome wire ifgi2gzc ;x1 bm.lqtr7s7703dtodn z(u 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 croso6fg 4 ty a7*z9zmnc;ss-section, 1.0 cm x 2.0 cm. What is the ns; 79zay4c *otfz6gm 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 0.50 mgbih ;: 2ztsi0xhso )i/8*eilm 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 q, ,k,1.of )nc/mite v dn+lg2esmjb+ $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resist0o4x,pt ype8(lwoiy1fn a )e8 ance 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 resistivi8-dcgh c;21 ztb ffu;nty 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 (y9 x,vhwpk f 7ftaiszq( /n5-melting point of indium. The resistance of the platinum wire if q/ xt5n7(z-9fsy kpv i(hwa,s $2.000 \; \Omega$ 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-6j e ewolebs :41mjf. an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. k5n 3b 6agk.:r k kowog4x0qmb3 4scr8What current will it draw?

  A 150-W light bulb runningi31t aoty.cm ,etjj/hb6tk k a2pdc5gx+9 ).f on 110 V draws how much current?

  What is the nominal resistance of a 100-W light bulb designed to q.d mx3r1510b .:jie2zyg ov w:qqriibe used in a 120 5ibeq wr y1z3v1rmii.:o xqgdj.q:20-V circuit?

  A toaster is rated 800 W5/n6 hdaw )hd 5t:edwf at 120 V. What is the resistance of its heating element:tw 5whed/nah )5fd6d ?

  A 200-W resistor is ratedgkzsp (da:ky )jt v*z r0y1s7) at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is ratojcrqsrm fpzh8 2 i(;zp1we:/h q-8: sed at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb.t4(lhqm)lkk +36c ave If it is used at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is uo9;p +e5o p l0amlzky(sed at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What is its resistanc(5j3qh .eq9vb (i iasne?

  How much does it cost to operate a 0d ; : u4jgrqz7l4u8gwsqk+fy25-W soldering iron for 8.0 hours, if energy costw7qgrduf+z;q k8lgyus:44 j0 s $0.08/kWh?

  How much energy does t dh(d c-qme.vmvdg :rww 7 n100.y,rka 100-W light bulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hfswgv-e2d(38dhqxs 2 /nc a-hours. How much heat energy i-dhg-c23 2 8xnesf(hd/vw saqs produced?

  A battery is rated at 12 V and 160 A-h. How much energy( ochkcajgn 0h/05j i- does the battery store?kh-5/jnc c o0i a0g(hj

  How much energy does a 25-W soldemx9q*y 3m rn6rak9 bt2ring iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. of1oo, wh(z5iosu1.y. dtb.v Assuming the power company charges 10 cents for each kilowatt-hour of 1 yi..dh o b15,t oo.wzfus(voelectricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) hc- ,hr: 3hubhis turned on 8.0 hours per day. If electricity bhh:,r3u hh-c costs 10 cents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost 1tm tq-4n,a j k6jax.3sc(s irof running a central air-conditioning uni .(a3jqk4 tcsn 6-,t a1mirjxst 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 electric bill if electricity costs 8.0 cents per kWh?

  The heating element in an electric drier operates on 240 V and generates he(ykf+ / exk5keat at the rate of 2.1 kW. The heating element shorts out and, in repairing i+x (ekek/yf5kt, 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 tw;dsf g+vuj -v( fd rggb-f4xb4a /(x3hrough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs 21k9r+oqxr( k 6du rar$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 tg(zmk o6u1 8ethe rate of 2.0 hp has 60% efficiency. How much current does it draw from a 120-V line?o 81zmkeu(6gt ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac pow6cz (rkg ,o 9vxvueb*2m8 4nc:/aane ner source. What rms current flows throunvn*n rz 9/a cbvx4 6ka(ec:g82o,m uegh this device?

  A 500-W device is connected to a 120-V ac power source. in/3m1qo 0xod What peak current flows through this devic m01ndo3 ox/qie?

  A 500-W device is connected to a 120-V ac power so ,) ju;tda8irxurce. What is the peak voltage acrossix8uajtd ; )r, this device?

  The diameter of a copper wire r myb sxwd: mo.rl00;.:u *qcuis 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 numb 0rmsbmo.q0r:l wu ;:y *ux.dcer of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)