A device that produces electricity by transforming chem,*z+ sy ,41z pqvcgivvical energy into electrical enez,,*qvv4+czgs ip yv1 rgy is called a

  A car battery

  The total amount of charge that pal kx lkle6 rjn;;k//7msses through a wire's full cross section at any l6n k ;j7/xlml/;ek rkpoint per unit of time is referred to as

  The direction of convention current is taken to be the directio qw7hwe 9xai3xlxm8-4n that

  A coulomb per second is th q. /eatq2fpx3e same as

  Car batteries are rated in "ds)v,f/z3xoz taiu- 8amp-hours." This is a measure of their

  The resistance of a wire a6ok1cw) rv y*is defined as

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

  The resistance of a wire isxt5n zhlfm)9-kz b;+p

  The resistivity of a wire ixl d. 0us8adsfyf *0;et 4kn+depends on

  Which conducting material has the lowest resistivity valueuai5xa2cj hr mkr76++?

  Consider two copper wires. One has twic*brzx5n8w.va ma)gz+ e the length of the other. How do the resistivitizx8 5r g.nma bwv+z*a)es of these two wires compare?

  Consider two copper wires. One has twice the length of theiao4q90 0)sn fxcitd ( other. How do the resistances of these t)9o4fa00tn i(ci dsqxwo wires compare?

  Consider two copper wires. One has twice the cross-sectional area of thzxa /6/ ubyictdki83k2n ( 1:fpz 9vxee other. How do the resistances of these two wires2k/p by v1cx3d9u8z tiznak(:f /ex i6 compare?

  Consider two copper wires. One has twice the length and twice the cross-sectio kjpmc3r5 vv/-ah)z 09+efhb26 ecesc nal area of the other. How do th e5+e-0r cz)afvk3cvc/hb s6 hpe2 9jme resistances of these two wires compare?

  The length of a wire is doubled and the radius is doubl/:n0ka bdj)b5ydfk: qu3l1bked. By what factor does the f : 3bb/l: dk5dunj)b1qky0karesistance change?

  How much more resistance does a 1.0 cm diameter rod have compared to a 2.0 cm dirg0c mt cc 475vu+rz1(w;amriameter rod of the same length and made o zrcc51r;t+7u(rcwv4 mam i0gf the same material?

  The resistivity of most common metal*vq4ei svo+x u;esi*: g5tec2vn s14 cs

  Negative temperature coefficients of rmq +e z-p5;xwp nj;f/kesistivity

  What is 1 W equivalent txj 4p61 1u0 mdqmxhg+bo?

  A kilowatt-hour is equivamm i/a2hx1g2db.dacgx b ,o 12lent to

  If the resistance in a constant voltage circuit is dkchb.gqpe bg*)*j 9vy x6gv,n.on0+voubled, the power dissipated by that circuit we.*0 .b+noyg*vj xvqcbggnvp6 9kh ),ill

  If the voltage across a circuit of constant resis2cxhat1) .usutance is doubled, the power dissipated by th)uxc 1stha 2u.at circuit will

  If the resistance in a circuit with constant current flowino7qgb 7yy v kyui,(8b7u+ ;ghsg is doubled, the power disskq8i+v7hubs b;, y7 yy7ug( ogipated by that circuit will

  If the current flowing through a circuit of constant 0cp3vi:dgl5lfx. 9n bresistance is doubled, the p.9l05fdbli n xgc3v :power dissipated by that circuit will

  During a power demand, the voltage output is redu zdsl+xd 577l, v5khgiced by 5.0%. By what percentage is the poweidglv,dl5 kx 5z77sh+r on a resistor affected?

  A current that is sinusoidal with respect to gpi)h,;)4ialx-xf2ry+x8 r7trvg drtime is referred to as

  Consider two copper wires each carryin5 ::tfmxi3 zymg a current of 3.0 A. One wire has twice the diameter of the other. The ratio of the drift velocity in the smallerm:yi xt 35:mfz diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially zero at very 18idoe 5j.r0da +;m no9sfhkg*zz a /slow temperat8s1 zasa 5rz ejdk oni.f;/* 0m+o9gdhures are referred to as

  What current is flowing if 0.67 C of charge pass a point in 0.30 s s*is zxbh(.b5?

  A charge of 12 C passes krhv mb x07+cafj etd60o0, -qthrough an electroplating apparatus in 2.0 min. What isced-0jf06a7hm x+ 0tbrvo,q k the average current?

  How much charge must pass by a point in 10 s for the current to be 0 +qmpia00yh:u2bqc( n.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 flowingl18b ae ci0rkvrhnl7**p 6b1n 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 cuiba +ob9 ewo8edbiyf86)vx ;kf og )-;rrent, has been left on for 10 min. What is the net number of electrons that have pasoyof6b+; eiio ve8;kbabf-8))g w 9d xsed through the coffee maker?

  In an electroplating process, it is desij6xuhbefy40-s 2 d)dp red 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 xd d 64yfeu -pj0bsh)2silver? (The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference is requireq;g ubbl0,e myrr:(y 3q(z8 dpd to cause 4.00 A to flow through a resistance of qlqr :;8mu y03(pge rbdy,z (b330 W?

  What is the voltage across a 5.0-W resistor if the current through it is f;f+ 0vgwju 2g7ssu+doe562sh-c ig o 5.0 A?

  A 4000-W resistor is connected across 2c:x/ghl/ 2 s oyjyc4:w20 V. What current will flow?

  A light bulb operating at 110 c 8v7dh7udxy1v(6m ed V draws 1.40 A of current. What is its resistance?dvd7yd( hv1ux 8ec 67m

  A 12-V battery is connected to a 100-W resistor. How many electrons q j4j*l:wpdv .flow through the wir* 4:pqvwj. jdle in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 e +ri +t33si0yd7j0uk iku)iy inch? (The resistivity of cop0 kituisrjek3y dyi03)u 7++ iper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1bvesjn9 8rglqpq ; 6clu8.y.8 .0 cm in diameter and 45 m long, if the resis qlubqrn c69. 8y;.segj 8lvp8tivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wi.ox0 ftl5t dt9re (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 (re6x3rub :zo6a,opumrph c67/ u sistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, meas2 0 /b jud.zanl-xoras3ao:ylx;9bu *n. .t ntures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the rh9o+yr*3 e yb5aydf j*adius is 0.321 mm) nichrome *dye bhja 5 +f*3r9yoywire 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 cjml)3hlg lu9 j)/l ;-rbxda6u m long and of rectangular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 A?amul3/l gbxl)l6 rh ;u- jdj9) (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 mm and a resisp mzdk b 493:za enub6mb0l7f9tivity 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 hck ;4f,e3 ofbda - jk71i7ff khhg35q(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 nm+9enqswc6pzsdn;gty +v:rc ,du; c)c4(m* a resistance 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 resistivity of plm7houw9 ku dku/ ;z3)uatinum 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 dety ku2ven a;5f2ermine the melting point of indium. The resistance of t;f2ay5uk 2vne he 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 through ahep8-hec t :k+ph9nn3 -jqjd5 n $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is r6-zuur2sq t/nh* s)m nated at 1200 W. What current will it draw?

  A 150-W light bulb running on 110jz:q uvg; g1w) V draws how much current?

  What is the nominal resistance of a 100-W light bulb designed to be ; 6)vznlxs9u zfwb.gvsg)w7:used in a 120-7 zb w:).l6x sfwsgvug;9vzn )V circuit?

  A toaster is rated 800 W at 120 p4jf)w6d sa85hja, g k9n0 jxtnzyd:(V. What is the resistance of its heating elemenj4p fd (tn,:j9y56a0 sx8a z ng)hkwdjt?

  A 200-W resistor is rated* fld1h0rqqd:1o ux g9 at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rateeg72 k8ruc jf5d at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, whaq7eyw f/-ye;r t current does it draw?

  A lamp uses a 150-W bp6tdx8 qyfa*j3j6cvf+oz .r ;ulb. If it is used at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What is its re f49vn8cjb9r(fe 7sks7bsb8ksistance?

  How much does it cost to operate a 25-W so897ka-ij/mvcu y he8lldering iron for 8.0 hours, if energy cosi9ke alcyu 8/7h-m 8vjts $0.08/kWh?

  How much energy does a 100-W l3hat 4rq co*)oight bulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0m*;tdu5ce p1s hours. How much heat energy is producem*utcd p1;s e5d?

  A battery is rated at 1i)b shx 9hpaq9)f 3c2d2 V and 160 A-h. How much energy does the battery store?x9ib)d3s2qap)9fh ch

  How much energy does a 2x thxyu;/t)xem1k 9h3ex p m,;5-W soldering iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming the poweb u c*kj:q,ke, jp8kg9r company charges 10 cents for each kilowatt-hour of electricity used, estimate the annualqjc j, k,8kku:*bg9ep cost to operate the bulb.

  A 400-W computer (computer iki 1wyb.b 1 xuy*-h,bplus monitor) is turned on 8.0 hours per day. If electricity costs 10 b,11.y b *iuhwxb-yki cents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of running a centra yupl8l*e c*img)2)+qvakr:cc 7jqu+l air-conp+*m cjkl)+c2 u*g yl7ci )8aqq:vuer ditioning 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 these items contribute to the cost of the monthly electric bill if electricity costs 8.0 cents per kWh?

  The heating element in;ji7j 3w.b 5debnjmlyf,, w: k an electric 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 Nichrome wire by 10%. (Assume the temperature is unchanged. jyndw.el iwf5bmk;: ,7 j,j3bIn 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 qkx0n50qzq +y $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs(capmt. /w(wgr)g qe ke)5 m8f $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 efj4m1; z9n9 sa-jxugwork at the rate of 2.0 hp has 60% efficiency. How much current does it draw from a 120-V line1 m4 -;zj9jan9efxu sg? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120- )wo )rdcy51nsV ac power source. What rms current flows through )d5or)c1 ysnwthis device?

  A 500-W device is connected to a 120-V ac power source. What peak current fe5o0m1 /jqfc b9jtso;lows 5jt ob0/e9mfcosj1; qthrough this device?

  A 500-W device is connected to a 120-V ac power source. Whath1cvh xkel6mv i.36 :n is the peak voltage acrosv 6lim 6vk h3e.ch:nx1s this device?

  The diameter of a copper wire is 0.081 inch. The maximum safe current poph9nwvxro m:/:j.kck.f +( it can carry (in order to prevent fire danger in building construction) is 20 A. At th/fw.hnox k. p:v:mc+ jo 9(rpkis current, what is the drift velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)