A device that produces electricity by transforming chemica hrb) kxv,03h:c +9 5oq dcakf4mfqa,ql energy into electrical enefh +xmcq:qkf9)5hk cda3r0vq4 bo,,argy is called a

  A car battery

  The total amount of charge that passes through a wire's ful8+/j6alnl psvepo 3,nlpr g: zqj7y5+l cross section at any point per unit of time is referred to 5+p jn 3j7rz/a :qvlg6eyl+spn po8,l as

  The direction of convention 6-e, :,sq.ggod*p+l fdpdafrcurrent is taken to be the direction that

  A coulomb per second is the s) uvqwyx9 5 v9nt4jv5kame as

  Car batteries are rated in "amp-hours. cul 4v;zi(:no" This is a measure of their

  The resistance of a wire iswwr5) q/b8nb1x; g,ai 7djjli defined as

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

  The resistance of a wire c09dl 3qwr/uais

  The resistivity of a wire djs1rm oh9o- kqo 7lpgm(*3pn.epends on

  Which conducting material has the lowe..up c/w)4h2vv9o5 7rkwqm t7pkza keffw/z7st resistivity value?

  Consider two copper wires. One has twice the la0o)3ix8 fewl ength of the other. How do the resistivities of t x)io0e3lw af8hese two wires compare?

  Consider two copper wires. One has twice the lengthzqs,:a7ls 5qtrq+rsz8 iq m , 1l;c*sz of the other. How do the resistances of thes,zqsmlz8 ri+1t qs:sa5rsq ,q; *lz7c e two wires compare?

  Consider two copper wires. One h.9ebjijc3s fk2 xw7h6 as twice the cross-sectional area of the other. How do the resistances of these two wires xhs i k796cfb23. wjejcompare?

  Consider two copper wires. One has twice the length and twice the cross-sectionkj0s.qrbm6 *k3/niks al area of the other. How do the resistances of these two wires compi/m 0nss6 k bjkk*.rq3are?

  The length of a wire is doubled and twit( noi1 15cahe radius is doubled. By what factor does the rtnac i1ow1i5 (esistance change?

  How much more resistance does rahw;2qa27rgs +1p 6nv8f cyba 1.0 cm diameter rod have compared to a 2.0 cm diameter rod of the same length and made of fsr16w2cr2 ayg 78+pqn;a vbh the same material?

  The resistivity of most common)p;.rqwp 1(p*wrwsgl metals

  Negative temperature coefficients of resiskx lvgvj+2g7 yh7bk7w9a+ ak6 tivity

  What is 1 W equivalenz 9s,,susyo c3 qhec3*t to?

  A kilowatt-hour is equiv2iw,jbw 0jw7 talent to

  If the resistance in a constant voltage circuit is doubled, ;y yqn ,q4gt (9u4c s2rystp9qthe power dissipated by t4ut q92syr4( 9qgnqyc,ys ;pthat circuit will

  If the voltage across a circuit of constant res5ijhtrt:;f i8so0 n.sistance is doubled, the power dissipated by tha8tr t:is0; js5on.ih ft circuit will

  If the resistance in a cir/:0ydehxoty-e rx+-kcuit with constant current flowing is doubled, the power disstk+:ex0 r-y /e h-oxydipated by that circuit will

  If the current flowing through a circuit of constant resistance iscj,hdvth w 7bi in0.* -ncva81 doubled, the power807i vbd i j.w1cn nav-,th*ch dissipated by that circuit will

  During a power demand, the voltage output . n5g96pmnjuue i:ja9 is reduced by 5.0%. By what percentage iap e5 j9i9.num:gju6ns the power on a resistor affected?

  A current that is sinusoidal with respect to time is referb6 -b5tvl:cty red to as

  Consider two copper wires each carrying; cys/lv myhwd(;z.(n a current of 3.0 A. One wire has twice the diameter ofs;nlyvc(z (hd w ;y/m. the other. The ratio of the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially zeroal uc09xn (6x c2p8ubz at very low temperatures are referred cp2 96(u8buz0xn acxl to as

  What current is flowing if 0.67 C of charge a2 hauunhbn) gvecywv4d3 2-8ljg);/x95ylfpass a point in 0.30 s?

  A charge of 12 C passes through an electroplating apparatus inh rbids:w3dcpe , ,*+z 2.0 min. What is thecd+*, bd,h si3zw:rep average current?

  How much charge must pass by gum:4ea tz(4gjg3hpc)ey :t4. 9 p bqza point 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 flowing ifc pl,/gm t (d*uhb 6b(d7nik9k/cr au: $4.0 \times 10^{16} \; electrons$ 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 currmv:gglpkx3 z-(o da51ent, has been left on for 10 min. What is the net number of electrons that haoxl-(kg pz 1da:v5 m3gve passed through the coffee maker?

  In an electroplating process, it is desired to deposit 40 mg of silver on a meta *jzpq8d,x,a il part by using a cuq8d jp*z ,,ixarrent 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 silver is 108.)

  What potential difference is required to cause 4.00 A tqe; j;* :;wfwtqyja/ lo flow through a resistanceql wja; f;j*e;y:tq w/ of 330 W?

  What is the voltage across a 5.0-W resistor if the current thujue5/ ;5nwk9cpywc 0 rough it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What current w + 2f(bmt7eyzfill flow?

  A light bulb operatingmay 890 )sslduaw(:ur at 110 V draws 1.40 A of current. What is its resistance(yul8wsrau 09)d:s ma ?

  A 12-V battery is connected to a 100-W vz7i9fo lk5;vlr88w k :u9fmhresistor. How many electrons flow through the wirk8 ;rovwi lh8f9umz79v5l f:ke in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? d/bjw2 gtlu;/ v q:b-8 0oltft(The resistivity of copper is /fdl 0 /g8jtqt-bw;oltu:b2v $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diametery3;;z kfus7 cr and 45 m long, if the resistiy 3; zkf7sc;ruvity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wir +d zba2ndj06he (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 (rea9-1dk 08qtozzkhnkj q)6 -k rsistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 is ih/os6i u( z4xats resistivity?

  Calculate the current through a 1h:t1l : u0mb*o ztf-; yjw;vte0.0-m long 22 gauge (the radius is 0.321 mm) nichrome wire if el;foyvj :b-*1:u th0;wt mtzit 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 lonvz qfkt8i .cpdx4-a-- g 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? (The resistivxd-kcq4 i fz- p.8-vtaity 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 resistivityo6dx:ok e:l vxm4;-wklrm y8q z8d02qp(u)lm 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 copp-e -bmeim,pz)/tlj6y)q of0w er wire (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 resis*fe5op4 34y2njkst mmtance 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 plargrk4ipy-lvi39(6 /wz b1j w ctinum 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 indium. The ;so-k00jtc scr0vln v wy s/.5resistance of-0ct00 r o/ ylks.wj5vn scv;s the 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 throug+v-z-jc-t ox7f97fmfvwy3c th an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated 0s+4r 9hhqq:t5o8i6e 0ios iqwr1n jb at 1200 W. What current will it draw?

  A 150-W light bulb running on 110 V draws how much j94z0 l tnran/93gdgo v abe5m( xp+:fcurrent?

  What is the nominal resistance of a 100-W light bulb designed -oy /jt-kv5g7v2fmv2r m 2ysoopg 8nza+1qj- to be used in a 120--o+8/frvtv-n y p 5j7vsak2gmzjqyg o21o2-mV circuit?

  A toaster is rated 800 W atvb0;9fu r2:k2z)w 0 lrmqa rokh cdo0;vp9b t* 120 V. What is the resistance of its heating elementh b )*o fa0rrvvq wb:;lmdto2 urp k0ck0;z992?

  A 200-W resistor is rated at du au hx.(mm92mb 58m4: wn 0+limi.wqb6k orp$1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated at a;6 0m 8i(d r8elsgs0rnezg9a$1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what current does it :2ymzqayg ro7*5 g w;edraw?

  A lamp uses a 150-W bulb. If it is used at 120 V, d0de c0:wzn.pj/v*8go qrj u3vo8ey/ what is its resistance?

  A 25-W soldering iron runs o9 i n;o0 wu7xj5vza7bym-dg2 hn 110 V. What is its resistance?

  How much does it cost to operate a 25-W soldering /qgmzema,qxqq6lt.7e6+o r)pa+f l 3 iron for 8.0 hours, if energy 3)q o67e6tg x,qqqazl +mlm+ep f./a rcosts $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 hours?25r8p9g yjvs t0nno/6uqt0 ud

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How much heat eny, h/exf46qnsm of0 zfh e12.pergy is producenmsh2 o1h0ee,6/p qfy .z4xf fd?

  A battery is rated at 12 V and 160 A-h. How much energy does the battery sil /,ump,8fdv-8hqo ptore?d8 lq v/mipu-,,ph8fo

  How much energy does a 25-W soldering iron use in 8.0 hoursmnz3)wxx. o (x?

  A 100-W driveway light bulbaj fd25xmr ebo3er.ac 2 ,hh54 is on 10 hours per day. Assuming the power company charges 10 cents for each kilowatt-hour of electrm .23crb45hrjx 2ah foade5 ,eicity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours per da1t 5vgz 3ikxfnoyy7 61z q-r+xy. If electricity costs 10 cents per kWh, how much does it cost to run the computer an zq7x5vk1n3y6y1-xr tg+io fz nually?

  The monthly (30 days) electric bill included the cost of r6nb-, u h4m,nyg iw1xqunning 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-b 6nnxmu,wg 1q4ihy, 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 jaaswb 8rh2-6at the rate of 2.1 kW. The heating element shorts out and, in repairiw arb 6j-28hasng 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 flowq.3z.fxnn(1o ;naa jps through $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs :x31ee+ahjs4r j eh/u$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. Hoi5d3 wsnm+mx;6ro - yrw much current does it draw from a owm+r5mds63 ir n;-xy120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. Whatptncxc(wm tzebs g.q 4i6a9 r;d),3+z rms current flows through thiszpms en cattzx69d)gcwr,4i +3 (.b ;q device?

  A 500-W device is connected to a 120-V ac power source. Whieil 5(b7n :inat peak current flows through this deviceblnin5: e i7i(?

  A 500-W device is connected to a 120-V a6z8m j4vk4rz9z uv;xqc power source. What is the peak voltage across this de4j 6xrvzk z84m9 vquz;vice?

  The diameter of a copper wire is 0.081 inch. Th;ip192i rrh ole maximum safe current it can carryr;r o2ip1lih9 (in order to prevent fire 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 $8.5 \times 10^{22}$.)