A device that produces electricity by transfobt(b yr*urlnxylrs gd+6 c 2(3o mq06/rming chemical energy into electrical energy isrrsc2 /qb6rlyyodx*6((m 0l g3nu+ t b called a

  A car battery

  The total amount of charge t7e32oxtf0,e7umu 0zy,4bka l xlujs7hat passes through a wire's full cross section at any point per unit3fbyu2l7 u4j, 0ek7 aozl,esxu0t7 mx of time is referred to as

  The direction of convention current is taken to be the dirg ( j8apheyzgewb 2vi,vh17g, h/27kaection that

  A coulomb per second is pqt *uw45pfi,9e 3 .vvr;+ai mqptt,kthe same as

  Car batteries are rated in "l3 jky /2ygu-damp-hours." This is a measure of their

  The resistance of a wire is defineds,p( fzmr qc/im6 ydox *oeb47a7fx5: as

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

  The resistance of a wired)8h(1 erol(8xwf7n)o etnd d is

  The resistivity of a w,ac:3whn) o rnire depends on

  Which conducting material has the lowesufxcb y(8isb, p z3f( l*84j 9d:muzeut resistivity value?

  Consider two copper wire l,w1n.wsqccr i2x):e5y+ybu- 0r ax ls. One has twice the length of the other. How do the rq):yxbw0n1+r2.s5cxyu ,e wa r-c lliesistivities of these two wires compare?

  Consider two copper wires. One has twice the length of the oj jis.ws -9s8uther. How do the resistances of tis9 sj-.8usjwhese two wires compare?

  Consider two copper wires. One has twice the cross-s1 .bgll-*ars:ve s.30d0 ubisa1qw saectional area of the other. How do sres. dgaqs.3va00sb :ui* a1wl-l1b the resistances of these two wires compare?

  Consider two copper wires. One has twice the length and twica2 (ck6x6a90 xlbme vte the cross-sectional area of the other. How do the resistances of these twv6(e alm6xtbca 9 0xk2o wires compare?

  The length of a wire is doubled and the radius is doubled. Bywi +x qh5 32,qorkcb/rhy220mgki*m y what factor does thhk qiow53b/y2 hiq,krmmyc*0 xr g2+2e resistance change?

  How much more resistance does a 1.0ts+1ubkjw b6 7 uk9ce- cm diameter rod have compared to a 2.0 cm diamet+71t9kusbkw c b u-e6jer rod of the same length and made of the same material?

  The resistivity of most common mexu jg(n+*nv 1ryvanlst32j+7 ez:5 gltals

  Negative temperature coefficients of resis+zl s y0()cavntivity

  What is 1 W equivalent v/7lk3zdx7 r +;cnhqet:ccvx4c +*yv to?

  A kilowatt-hour is equivi1 o1y+* , xwcazc 20pstuh-cmalent to

  If the resistance in a constant voltage circuit is doubled, the power dissipe ,vzzu0*x ty7hkzf*1ated by thf z hut1* 0x7*,ekvzyzat circuit will

  If the voltage across a circuit of constant resistance is doubled, the poweesh6d j 3d27(a+0q46zcx ) nvtfrumeqr dissipated by td+ nxq 2qe(za406)3ec6jusr hv f tmd7hat circuit will

  If the resistance in a circuit with constant current flowing 9pyads5 3*k o/f.insfgu+ x9wis doubled, the power dissipated ipgo./x *fwda5 9sy9 f nus+3kby that circuit will

  If the current flowing through a circuit of constant resistance is douby: nfhau791 x*)uafgkled, the power dissipated by*9 k)hnga 1 a:uxyff7u that circuit will

  During a power demand, the voltage output is reduced by 5.0%. By what percgeimvcq7*,-,c lx 1ynentage is the power on a res,,ym-cg l evx7 nqic1*istor affected?

  A current that is sinusoidal with re5:k.k lj7* q ls8rmwnkspect to time is referred to as

  Consider two copper wires each carrying l, vh zh0jdy0,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 larger diameter ld0vzh,yh j 0,wire is

  Materials in which the resistivity becomes essj1zeibf;u9 ( r-a yo-ventially zero at very low temperat( aey-fo9zuir b1 ;v-jures are referred to as

  What current is flowing if 0.67 C of charge pass u) d(:vp5w 5 vri-psixa point in 0.30 s?

  A charge of 12 C passes through an electroplating apparatus in xwlbdaq) t.n c qaww5.,(bc80l d84zw2.0 min. What is the average cw,8 . dwadatq).l4c50nxb bcz8lqw(wurrent?

  How much charge must pass bcuz g mte99x69y a 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 bg.*lvhq) 4(h,ip ylhif $4.0 \times 10^{16} \; electrons$ 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, whichwktiyv0 c1(; e9gtbdfk(0 ,8r ryraa 4 draws 13.5 A of current, has been left on for 10 min. What;,t( 9tc rgyyrdv( i0wf8kbka r14ae 0 is the net number of electrons that have passed through the coffee maker?

  In an electroplating process, it is desidhk5v msh f omoj+uu*f3,cg3/ -m.:ig 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 silver? (The silver ions are singly charged, and the atomic weight of si3vo*hi-:5ffh/ mo, +mmdggk.cu3su jlver is 108.)

  What potential difference is required to cause 4.00 A to flow through a res,h 1 gk4t9x hwt)fxf8mistance of1w )hxtxf4mk8 t9fgh , 330 W?

  What is the voltage across a 5.0-W resistqe,1o l1to9ozxkl 53por if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What curren44x4 gcdq 8ydh*u zz/pt will flow?

  A light bulb operating at 110 V draws 1.40 c8wutd bg2e7to snak9.o.0c- A of current. What is its resistancecn 8cdg.7uea2wtbo. ko90-st?

  A 12-V battery is connected to a 100-W resistor. H3e axf13qbp5n ow many electrons flow through the wirebefp3na3 1q5 x in
1.0 min?

  What is the resistance of 1.0 m cop.bled(2 zt mimf*hb7/a5vw3b per wire of diameter 0.40 inch? (The resistivity of ceb/ mi 2ha*b5ld.bfzmvw t(37opper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular ropzwknw99w/rb 4x5c y:d 1.0 cm in diameter and 45 m long, if the /99:4xwky r 5czwwn pbresistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resisu:bzvz4ib66:zu:2jb)jil wjtivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistivity/q1sjkrmo6* h $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 ymk1q) brm-p u7kx-,yohms. What is its resistivity?

  Calculate the current through9w nwzv2 2wlx2z6d +jf a 10.0-m long 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected to a 129zw2ld2wj2 v6 znf +wx.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.sl +/ wb0dw6hk0 cm x 2.0 cm. What is the voltak+ hdlwb06w/s ge 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 had u /;oi:*, mxucmg9r qwwj6,vs 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 wire (resid/ejyloa;4 sq/6pp8hfxvesj 0j297istivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a roh54kflul z-: 49 l oj b421hio-djjuuesistance 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 coeff5l 8 gv;bg6xevicient 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 determine the melting point of indium. The resistancx4 6ned lvr46ze of the platinum nvl6 x4drz6e4wire 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 throufg up+2h4f 9fugh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What clvb d2n558cy zurrent will it draw?

  A 150-W light bulb running mys sjd3 :xas73+zdl. on 110 V draws how much current?

  What is the nominal resistance of a 100-W light bulb designed to be used in a 1*sh qwnt0swho4,wm *4 .xvu /u20-V *wostsq 4 vu/u*nh0wxh.m ,w4 circuit?

  A toaster is rated 8g7zu q250fg)(txq ct y00 W at 120 V. What is the resistance of its heating elemenqz)t 5utgxg2 0 7qycf(t?

  A 200-W resistor is jq 9sp,8.,to tbfhjwceui6*s*q/3 ourated at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is ra leis.,m(xx/nr /rwbap8m (f;ted at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what current does it db npq0/ dk6fbk+fvot w(j:rj:/c ,yi8 e p5l8kraw?

  A lamp uses a 150-W bulb. If it is used at 120 V, what 7hp 7geix j(n8 b4i+58svbtml is its resistance?

  A 25-W soldering iron runs on 110 V-xa3/ dq,qyor . What is its resistance?

  How much does it cost to operate a 25-W solderigj x;tq8(04 uhpcjv2 cng iron for 8.0 hours, if energy cvq u 8xj(p4t0jgc2;chosts $0.08/kWh?

  How much energy does a 100-W light bulb tl1/ta)/dxsnp)+9r etx d w 8muse in 8.0 hours?

  A 1500-W heater is connectedb+ul0k fv ,1nvbdpp81 to a 120-V line for 2.0 hours. How much heat energy is produc+ pp ,0bvndukb 118lfved?

  A battery is rated at 12 V and 160 A-h. How much energy does the battery store:b(1/njrv 8njk7sijj - abv0 e1,rnhd?kj7sjbib8ad r,n n/( v 1 hje1nrjv:0-

  How much energy does a 25-Wt edke m8l;*g4b 2rx6t soldering iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per dadoe-49r*eqrx y. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost to operatexr9 *deqr-4o e the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours per day.*d.z:* 9sc95eu8 qdjuio zudw If electricity costs 10 cents per kWh, how much does it cost to run the computer ajw9 :q s8zcd* uu9ez5*du.i donnually?

  The monthly (30 days) electric bill included thypym bsgaw50p5 .w d3*e cost of running 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 wd s bpa5*mg30 pywy5.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 generater3yov*wonqgj2t : dy irzj(.)35ut 9ds 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. In reality, the resistivity of the wire will depend on its temperature.) What effrojn 3:.uti) yv gy 23qd5wzot9rj*(dect will the repair have on the power dissipated in the heating element?

  14 A of current flows througwope(hzf3n v1: 4 :5sdumob-uh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs e4 )rddcbe4y8fj*/sb $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 1nxld(37ad7 vvvsxc gin1 )l* the rate of 2.0 hp has 60% efficiency. How much current doesv7s)7gxvx1v1 d nnll*3c dai ( it draw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power sourcew v. 91kkf5a(8tiemlp . What rms current flows a.mlwfk8pivk 5 t19e(through this device?

  A 500-W device is connected to a 120-V ac power sou-c sjr)qtz m3-rce. What peak current flows through this devizq m3tjc-)-rs ce?

  A 500-W device is connected to a 120-V ac ;-yp5a*p1bk/hafsc*ab 7x c lpower source. What is the peak voltage acrossac7k*p5y bxha 1 -flap/b *cs; this device?

  The diameter of a copper wire is 0.081 inch.2mzb*nbods q)/25)eu y+1e6 x vlvx ja 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? (Theaux 2xdl 2*v+)ne /by15o6vqzejs)m b number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)