A device that produces electricity by transforming chem-oe e 0f/sf 5i- njwo0 li7q7)eic1pjeical energy into electrica cj/e)- lq05e1 iiwe pi7f7oso-nje f0l energy is called a

  A car battery

  The total amount of charge that passes t xv ;tlxfdd11r,8.n 5n8w hci5yeunf. hrough a wire's full cross section at any point per unit of time is referred to uf8lv.; x w.nn5rfn1x8hy d5ei, dt1c as

  The direction of conve;abba6s8 c q9b* uno9jntion current is taken to be the direction that

  A coulomb per second is the same a ilnuug20u8li.sxi/ey* 8h *ys

  Car batteries are rated in "amp-hours." This is a measure of theix+x 5uhu h0sh*,:u swir

  The resistance of a wire is dukfhl:7npj1eot4ic (7t*t t) efined as

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

  The resistance of a wire is gn6fc r* d8to5.yfvms85.f,rk qzz*i

  The resistivity of a wn550 uo3bwf uwire depends on

  Which conducting material h9gc3 we0 jp3ltas the lowest resistivity value?

  Consider two copper wire 1n8/k )t5hcz+saro nzs. One has twice the length of the other. How do the resistivitn nsr+k)h o 5tzz/c18aies of these two wires compare?

  Consider two copper wires. One has twice the length of the other. Howba gcccz5 jg j1(47(p 14ehblf do the resistances of these th1g4b e jg5z f(cba4jc7p l1(cwo wires compare?

  Consider two copper wires. One has twice the cros ri. k-hwtx3t jjvlf2lh:f83 (s-sectional area of the other. How do the resistances of these tv .j8w33ft:fhk2lhr xt - (jliwo wires compare?

  Consider two copper wires. One has twice the length and twice the cross-sect-iwnce d6j)o12uioup gkbqb(zs07+pto 4x+( ional area of the other. 0 7t-noz jsb( ogpd+ 4ixc +2weiqubup1(o6k) How do the resistances of these two wires compare?

  The length of a wire is doubled and the radibkfea5/ 8:+x iyicc d5us is doubled. By what factor does the resistance changei5:x dfyc+i 8ak5 e/cb?

  How much more resistance does a 1.0 cm diameter rod have compared to a 2.0 cm.eg1s(zi5ou 4nprn*iqby ;o+ diameter rod of the same length and made of the same materia n.i1epi* g;+n5(z o ybsqu4rol?

  The resistivity of most common tbur1 xy23bv m6k6*yzmetals

  Negative temperature coefficients of resistiv 3hgvtmu-g8h4 ity

  What is 1 W equivalent qvl,jilh 9k97 to?

  A kilowatt-hour is equx tcmfi)pq;w9wp 810q3mxj 5m-j* ynn ivalent to

  If the resistance in a constant voltage circuit is dq ei;ucmhs h/p,43j;s : *) 3zz0oolfhas,x croubled, the power dissipated by that circuiaoi,e3qus4)o : ;l;hjp3rc sshf, z0xmc/z h*t will

  If the voltage across a circuit of constij7f6q7 os o8rant resistance is doubled, the power dissipatediqr7o 6f8 7ojs by that circuit will

  If the resistance in a circuit with constant current flowing1q,bxq1tf y 7t is doubled, the power xt1btqq f1 7,ydissipated by that circuit will

  If the current flowing thro2iu9dy o sfdp8 en(z)y w3t6 z.m5lw9cugh a circuit of constant resistance is doubled, the power dissipated by that circuit willi 26sd39.nztm pcy9ew5fo z8 y) (duwl

  During a power demand, the voltage output is reduced by 5.0%. By what peri86w l/)eewm )j.f5 tdf 63rvfh;gvz ocentagiv; l wffdevhmwg8 t53)zf)/6r6o. jee is the power on a resistor affected?

  A current that is sinusoidal with respect to time is referred tz;hit*x0i7l-v 7xgoxggpn / 1o as

  Consider two copper wires ea :q:vt8psldo) ch carrying a current of 3.0 A. One wire has twice the diameter of the other. The ratio of the drift velocity in the small p)o8:v:tqdlser diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially zero:cd -l9kaf 2fpbx9.dc at very low temperatures are referred l-:f dfpkcad29c9 xb .to as

  What current is flowing if 0.67 C of charge pass a po35qcvbr44(p+u jhb ln xx;oe1 int in 0.30 s?

  A charge of 12 C passes through an electroplating appara-eq du)p4,p d:p ej9jqtus in 2.0 min. What is the average cur: q9e,- q)edjj4uppdprent?

  How much charge must pass by a point in 10 d ++p/gj8 nkrtfyl6c; 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 flowinq(2 cggexh(p /g 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, has been lefx4**m ni tj*tat on for 10 min. What is the net number of electrons that x4*i**at m njthave passed through the coffee maker?

  In an electroplating process, it is desireg*p:h-ngn 8qid 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 singlg ngi *8pq:nh-y charged, and the atomic weight of silver is 108.)

  What potential difference is required to cause 4(3 c yjxf cv/8b5/ausu.00 A to flow through a resistance of 8acsu/cbyv j 5fx/ (3u330 W?

  What is the voltage across a 5.0-W resistor if the cp7 -nirh;sawi3m wm,7urrent through it is 5.0 A?

  A 4000-W resistor is connected across 220 V.n5qx: imw h: fj5n*4dd What current will flow?

  A light bulb operating at 110 V draws 1.4h;hlwuz8)1v ,qllx)w 0 A of current. What is its resistance?))u;lxhz8v1h,wwl lq

  A 12-V battery is connecdbpd ou7t0b93 ted to a 100-W resistor. How many electrons flow through tb 3btod9dpu 70he wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of5nup+tsw) q x8 diameter 0.40 inch? (The resistivi+w)tsq n 5xp8uty of copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1. v;htx zl3f56r0 cm in diameter and 45 m long, if the resirzt35xlf 6h;v stivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wi,m,enk 4, qrpire (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 (resistiz q g2jqjacqca5+b/4 0vity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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. What n33(zyniuo2g is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius iso k7(l i9vgr8n 0.321 mm) nichro8i onk(9l gvr7me wire 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-section, 1.0g3niy ce:9h; rj4u2c0hbi n p+ cm x 2.0 cm. What is the voltage drop along its length y pbh9g2;ue43 0+ hcn:crijniwhen it carries 4000 A? (The resistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nicv1,.m ub/ +bc+obnfev hrome wire 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 wire0xv7k alu :p:jj4yu1k (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 resistance of dhg kb .q.o/a:$18 \Omega$ 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 coefficie1swe(tzbk01u2c c hx 4nt 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,/v d5z55fpjx+ ql i)(rfjmq-witv z. determine the melting point of indium. The resistance of the platin5 -fqrjl5mqv 5 tix.zi,+v(df/j)wpzum 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 alogk22yj 8*w4,jiu jqn $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current will it draw?hq -,a .cy)lfo

  A 150-W light bulb running on 110ny,u,. rlr fk9 V draws how much current?

  What is the nominal resistance of a 100-W light(p xl-xx*6lu 9:7yc-kaigdtb bulb designed to be used in a 12x (dy ai79gtblp lxxuk- *c-:60-V circuit?

  A toaster is rated 800 W at 120 V. What.;cn9j/ 96hhk*rj opgvw,;s v4pkf c y is the resistance of its heating element?hv;jrk6n sj p;h.9vp cgwk9,/yo*f4c

  A 200-W resistor is ratedbs2283qc acn6 n k4tap at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is r8xd7zr9 0iue rq ; a2y:dbe9sgated at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at a u8vx;4dkacfns81z 7 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it zt x/3r8+ n8chwf0ikv is used at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. ;aa+nrk pkfu92bg r+d((e i7f What is its resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0 hours, if en*g63z r)cgg1lmmoulk *cu;.e lp0 1wo ergy cosop *l .kcugc1g; z 0lo1)m6leurg3w*m ts $0.08/kWh?

  How much energy does a 100-W light bulbt2nk6+,k rb0dxyi- .7be i jvkjqi cz1:r pr18 use in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hh lysely0 q 9cg.9ua .e;ucc;/ours. How much heat energy is p0cs 9.l lhceua 9cqe/;;.guyyroduced?

  A battery is rated at 12 V and 160 5wk.-g jm j/ydhf1m d*A-h. How much energy does the battery store?5 yhf kj1 m.wdd-g/*jm

  How much energy does a 25-W soldering iron use in 8.0 hot(f:a7es/t kr(f, bqrurs?

  A 100-W driveway light bub67or(njtu7p /l hrxlw6t io5 c8f1v7lb is on 10 hours per day. Assuming the power company charges 10 cents for each kilowatt-tf6vjri1o(7xbcl nt prlo76/hw u5 78hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turneid14-24nqig b e:ehih d on 8.0 hours per day. If electricity costs 10 cents per kWh, how much does it cost to run the comp14-hgnhi2b ie q4:e diuter annually?

  The monthly (30 days) electric bill included the cost of runn. f+ ewg.jufvbz8/ 3v5p(ty kming a central air-conditioning unit 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 8 fg+pyk u fb5jw(v3. mte./vzthese items contribute to the cost of the monthly electric bill if electricity costs 8.0 cents per kWh?

  The heating element in an 8bejj. wfk(o 0electric drier operates on 240 V and generates heat at the rate of 2.1 kW. Thew0 jek. f(bj8o heating element shorts out 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 throu:qsr5 fclj8cz-su2h; x8p5n m gh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs3j1vd8h(v0g .shgq vl $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 t*4g)qc ivrmdt)ur ns9pghz3f/64n m2he rate of 2.0 hp has 60% efficiency. How much current does it draw from a 120-V line? q2vn rgg)fzs hm6t pmnu/ 439)ic4rd*($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. :qwfhs:l/ u1k What rms current flows through hu/ :kqf :wsl1this device?

  A 500-W device is connected hn7/ p(pfmwg5/ 5zn yfto a 120-V ac power source. What peak current flows thn/5pfpw g( h 7f/zm5ynrough this device?

  A 500-W device is connected to a 120-V ac power source. What is the peak voff z)8w fmc;t)ltage acrosw ) ;)tz8fffcms this device?

  The diameter of a copper wire is 0.081 inch. The maximum safe current it can cvws;1fk i26 + l,6ubkzsna0m xy+r:k bq1o6 piarry (in order to prevent fire danger in building constructioin6k++uy kkbbsov :wqx6 6 m12ifas1l0;pz r,n) 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 $8.5 \times 10^{22}$.)