A device that produces electricity by tb) c33vo/of egw0oq3hransforming chemical energy into electrical ene3/voo3)wec0 bg3 q ohfrgy is called a

  A car battery

  The total amount of charge thoz( 1jcv -chfr vd02ch/+ nyh0at passes through a wire's full cross section at any point per+v c (2h/vr-hyfcz ohn0c0d1j unit of time is referred to as

  The direction of convention current is tak6z4j utmd *j+sen to be the direction that

  A coulomb per second is the s;:ixn7d ntwvxe8vgfhx;j ;6+ ame as

  Car batteries are rated in "amp-houn1.aee khbhj i2x+9;z rs." This is a measure of their

  The resistance of a wire is defisqcm uc1fu0;tqw l k1,/ 0 jp3rv6xme7ned as

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

  The resistance of a wire isq:cse:t p+.vwc o;;xm b7 /ate

  The resistivity of a wire dex+b*9nn j 3r)izf13f sml*f agpends on

  Which conducting material has the lowest resistivity val,*o -vzyj s m0jt,sjiayw;j82 ag1w 8kj.co3rue?

  Consider two copper wires.-b1etsncj(m 7 One has twice the length of the other. How do the resistivities of these sm tbj-( 7n1ectwo wires compare?

  Consider two copper wires. One has twic+uq; z,p5i5kmviwm+i7 wtj s+ e the length of the other. How do the resistances of these two wires comq+vm z7i;+uijt 5 5,mp+kwiws pare?

  Consider two copper wires. One has twice i;0flzdau+jq (syb05 the cross-sectional area of the other. How do the resistances of these two wires compa5+f(ys0jilq0 uzd b;are?

  Consider two copper wires. One has twice the length and tol:l wko ;2:,ht,fdsxwice the cross-sectional area of the other. How do the resistanc:fo k,slod wlxt,:h;2es of these two wires compare?

  The length of a wire is doubled and the+vn7 3qpzw25:4*zqw u t oslxj radius is doubled. By what factor does the resistance changex723*nq:qjvu +s4pwzowzl5 t?

  How much more resistance does a 1.0 cm diameter rod have compared to au*3y6gf q+-s9m(pu u3etfm xlmcyv,9 2.0 cm diameter rod of the same length and made of tc9m ( q+up6emxvtf3yg*yuu9mfls-,3he same material?

  The resistivity of most common met3trt1mt54trxk5 7 xv+d(0wh+b a9vxw9hje v hals

  Negative temperature coefficients of resistc8;fdmmst we n89-(5b tz,ogvivity

  What is 1 W equivalent tqzg(vt * -gb,wpc6ri tqwvq i6 kc;(,8o?

  A kilowatt-hour is equivalent tmh d 8g0:eedvy-vvgg +f* .-wm+ve:gmny .zj(o

  If the resistance in a constant voltage ck*vc- 7g i1(wm7 rua kf4fc-icircuit is doubled, the power dissipated by that c(4ig*mkw7rc1iau fc7 fck- v-ircuit will

  If the voltage across a circuit of constant resistance is doubledyoi1cr y+ (qmzy/,3zmw /:d dx, the power dissipated by that circ 1mr:y,oz+cqy xyw //dd3 (mizuit will

  If the resistance in a circuit witd v /rhfaz/2)vt+ yaf+h constant current flowing is doubled, the power dissipated by thatfv yaf2 a)/tz+/d vhr+ circuit will

  If the current flowing through a circuit of constant resistaxm9u3 o+3mc hfn lhs:+nce is doubled, the power mmfch93lhn:sx3o+u +dissipated by that circuit will

  During a power demand, the voltage output zb4x 9kep36jfqq s1al(+3ev y is reduced by 5.0%. By what percentage is thb1(ys 6 4 kq3ezqve+fpaxl3 9je power on a resistor affected?

  A current that is sinusoidal with rrfk ) 6d:g7* vkts k:4t7vjp.y vg2xtvespect to time is referred to as

  Consider two copper wires each carry65ya1uz+uy kbo t6nv0o1pi ;hing a current of 3.0 A. One wire has twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to that in the largep 6 y+nv1615yhaikzou0u;tobr diameter wire is

  Materials in which the resistivity becomes essenjgtzn2: 9wb q4e lw j dvkh/lp55w0w/6tially zero at very low temperatures w5jk4 v 26leqzwwj:p /gtlbd095n/wh are referred to as

  What current is flowing if 0.67 C of charge pass a point8z/ymc 7fhb wae e)7o:5c6wp w in 0.30 s?

  A charge of 12 C passes through an electroplati )9c2ubbnt7l, (l a+i(fkpo:e n2lw,ir(sos x ng apparatus in 2.0 min. What is the average cu72net(p ,i xlab us, ofk:s(b29 rin+w(o) cllrrent?

  How much charge must pass by a point in 10 s for the current to be 0.50qcjtn0(9x ry+ 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 gnfksp8;k -bcsl;3u qc 7f09bf $4.0 \times 10^{16} \; electrons$ 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 10 min. Wsbqi. jnm25.+e:thz ga xv e 9qsw)2)mhat is the net number of electrons that have passed through the coffeewt+2x. )ij5qems b:) .zmaq9 2 sgnhve maker?

  In an electroplating process, it is desired to deposit 40 mg of silver on a mn*2nacxci*b(eblpk. 97o0b ufm9pf8 hhct.* etal part by using a current of 2.0 A. How long must the current be allowed to rx*8(i.9fhcbuf9pn0btmkl po*hc e2 7 n *c .abun to deposit this much silver? (The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential differel9rz 3r5j dya4r9zn9m/xmoz .nce is required to cause 4.00 A to flow through a resistance of 39y rl rd9j4no9z.5r/ma mx 3zz30 W?

  What is the voltage aym 6 pzs l0st/5s2ko.lcross a 5.0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What current will flow7 gv7rqijqml5 qab8.bbj - 91pl(tn6e?

  A light bulb operating at 110 V draws 1.40 A of current. What i ko s5qa6t m-+3c3eber)4ou lin7st g,s its resistance ocesu-neski,aq m3 5o7 lr 43tgb6)+t?

  A 12-V battery is connected to a 100-W resistor. How many d+0;ghn cp6 inelectrons flow through the wh;cd0g6np i+n ire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diametkxk2y 55l k1y of3rk3her 0.40 inch? (The resistivity of copp1552hfr3kko klxyk y3er is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circu e v1hv-*v7srslar rod 1.0 cm in diameter and 45 m long, if the resistivity is sevrvh1- v *s7$1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resy2e6n rvs: 8hee 9;wix j5htt4istivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistivitp;xu2:e,lri1n84 j*. tmo n(4+micaeggipdz y $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m lpu h 5f2i4bq.long, measures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m lbx6ag nek,o h2xxw3-2ong 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. (The resistiv2og nw6hbxex-3kx,2 aity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cross-section, 1.0 cm x 2.0 dva5ei lt70kl yv .;9wcb.k7 jcm. What is the voltage drop along its length when it carries 4000 A? (The resistivity of te.ai90;db ckwv jk.lv7 y75l 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 nj g10v*k83p xy2vp+iolz/y ma 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 (resistivity9 k6eb u6q2 c7gsz:b0upfqc( m $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a r yoqzzvzjj 3o u3t)6pw0b m 7l/0*,xkvesistance 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 (why)6 a)2jw-outgzm 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 point of indii ws8k8qud,x -um. The resistance of the platinum wire i, 8s-wuq 8ixdks $2.000 \; \Omega$ 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 throug0:l ss56w*qcngq-xpi7t c; pd9 ihr3q h an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is v a-qrrbc qeixl)ua-x19 5 m+)rated at 1200 W. What current will it draw?

  A 150-W light bulb running on(e/v*zlklu2 ;0m q ba, 0hvw j6o1hamd 110 V draws how much current?

  What is the nominal resistance of a 100-W light bulb designed to u/ h xr1(id(wmbe used in a 12i/du wrmh(x(1 0-V circuit?

  A toaster is rated 800 W at 120 V. What is the resistance of its heatdy+0/ w-3wt h+2 xnu zj:m;tugvjb1dying element? 3d :tb- ;mj21+ / 0+wvnhutdyyujzwgx

  A 200-W resistor is ratepf9ub6k8sf5u d at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rcnjqc)v *h0b l tbc5+(ated at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. ;ud qb21darzokvo+*3e *pu8 u If it is used at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used ag( bme f .3dkc0t1vg*4pmb+ dft 120 V, what is its resistance?

  A 25-W soldering iron runs 3h m zljw2evs5,(wz:ron 110 V. What is its resistance?

  How much does it cost to operate a 25-W soldering iron her rn-xtmu6)n. 4.ok for 8.0 hours, if energy 4krht.rn mueo -)6.nx costs $0.08/kWh?

  How much energy does a 100-W ipc mf.qj4h*xa4rsw.;/jeq -light bulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V li f 91uz972f5rpcw7vdaw3grzine for 2.0 hours. How much heat energy i w19dufrcfp 27vz 75z93 iagwrs produced?

  A battery is rated at 12 V and 160 A-h. How much energy does the battery stq3k5,gr t,ymuf m+3o01in avl g 3xvg.ore? v kggl,3x5a31,g+q0n. muvirt o3mf y

  How much energy doess bfpq w3t, pa6d5vbph.a0b86 a 25-W soldering iron use in 8.0 hours?

  A 100-W driveway lightr-iudfi54p rdo1n p p97vf:l4 bulb is on 10 hours per day. Assuming the power company charges 10 cents for each kilowatt-hou:l5i p df44vur- p9 f7dnro1pir of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours per day. Izx(pakd ech+.jg3zp 9:;f 7nhf electrdekc:z .a;g7hx9p njp(3+ z fhicity costs 10 cents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of running ) vb ah:zb)somnjf56m4c4v 5fa 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 thes s v5 bm5avj):fc4hofm46)nbz e 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 generae;0(2/ 8b 7un*klskftlqv 1ofiq g5n ftes heat at the rate of 2.1 kW. The heating element shorts out and, in repairing it, the owner shortens the Nichrome wire by ;k fs v/q bi7l2f(nteng51*08qulof k10%. (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 throp m :k l*)rhic(+ l7bsq6xto2eugh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs7 /*ocvt;mw5cit 6q ma $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 5pf1n/1 (bz o 7skfolry*(s,q kov .wawork at the rate of 2.0 hp has 60% efficiency. How much curren/pnk( 5yo1(f1 w s*q .,vrbazsokfo7lt does it draw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V a tk .9gc-l934sqxjd oyc power source. What rms current flows throuctj9x d.go3-ys4ql 9kgh this device?

  A 500-W device is connecteqw2d6mzg )u)v3r7*ssbun7 iaz 8r wl-d to a 120-V ac power source. What peak current flows through this devi3qu- vr6rm7il)8s gaw)uzsbd2* n 7wzce?

  A 500-W device is connected to a 120-V ac power source. What is th b m 9lt+95antc6eky3g2bjbl/e peak voltage across this devicgy59b9m2t l+ tcnla6bbk3/j ee?

  The diameter of a copper wire is 0.081 inch. The maxirvma*8lh.gfh99 xnq ;mum 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 number of electron caanm gqv xfhh*lr .8;99rriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)