A device that produces electricity by transforming chemical 1xp+zgzb.7ffow54u; 4 waoobenergy into electrical energy is57 fow w xbg4zbpau;. z41oo+f called a

  A car battery

  The total amount of chare4 xcxb 4z .kt.fbke.1ge that passes through a wire's full cross section at any point per unit of time is referred fe.zce4 bt4.kkx.b x1to as

  The direction of conventio ux-ctqw17of /n current is taken to be the direction that

  A coulomb per second is tpinom l.vfjg:;:p+9l-o8 xyw he same as

  Car batteries are rated in "amp-hours.fxrhx 4gj2d.9ua-w,x" This is a measure of their

  The resistance of a wire is defined as f30x(ft ,5a2isold-bmnb:ae

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

  The resistance of a wire fbosrwp-nw 9,/8pcb.is

  The resistivity of a wire depends on*xrc4bfkx3w8,ybn6g8 g a1cn

  Which conducting material has the lo 23 tqu+ywdzp3west resistivity value?

  Consider two copper wires. One has twice the lengp 6p4. mxnfqd qkid:).th of the other. How do the resistivitiemd4q dx)..pk:nqfpi 6s of these two wires compare?

  Consider two copper wires. One has twice the length of the other. How dlwm3*i 7ghm. do the resistances of tilm7.* 3g dhmwhese two wires compare?

  Consider two copper wires. Oc e cz- /h9u7r0t1znt3/thcvfne has twice the cross-sectional area of the other. How do the resistances ofrct/he3t1-ccf0 u7thv9z zn / these two wires compare?

  Consider two copper wires. One has twice the length and twic6mxx:u x**ah ee the cross-sectional area of the other. How do the resistancesxx**uaeh x :6m of these two wires compare?

  The length of a wire is doubled and the radius is doublerc9;;u:-;sq 5bxaqo oca9 /xrkkmkci ; d.b*c d. By what factor does the resqiakscc;;x;.krbba; u k*q 599:r dxcmc -oo /istance change?

  How much more resistance does a 1.0 cm diameter rod have compared to a al /ztpg y( 1)v)blq(j etu4+d2.0 cm diameter rod of )zp e)u1b/lvq(( gta4+yldjtthe same length and made of the same material?

  The resistivity of most coelzl4v0; q/kb ng9b3 ;b*sbp wmmon metals

  Negative temperature coefficients of j pq du-ter, *7-pm,ryresistivity

  What is 1 W equivalent cjs3fw5-irtv8: 1a :)h ss*ao5fpdp 4 dlpwf:to?

  A kilowatt-hour is equivy()9tqiuwlw-6 .and ealent to

  If the resistance in a constant voltage circuit is doubled, the power dissipatkrt, )f9jjh/j2pn07fuon+gg ed by that circuit will+t)j2 0gjr,n79kfg jfho p n/u

  If the voltage across a circuit of constant resistance is doubled, the po)c. pz-99nzdzk* o)goqs )wvtwer dissipated by o*)dgzp sn)ocvz tzw qk9).-9that circuit will

  If the resistance in a circuit with constant current flowing is do)xnj bz 2 wfa/x3)dy*hubled, the power dissipated b)nhx yf/ x*w zj)3d2bay that circuit will

  If the current flowing through a circu:qf2rxom3 aj3b : -p9goznii* ju;9nr it of constant resistance is doubled, the power dissipateiau2 oo* qj 33mr:99-j;bg rnnfx :izpd by that circuit will

  During a power demand, the voltage output is 3,mj4)4qngzlpfuk( a(*sqb1 lam e9r reduced by 5.0%. By what percentage is t9k lrg(4mq abz*4(s,flunme jaq13p) he power on a resistor affected?

  A current that is sinusow-ldy(gv- i7 hdcz 6,pidal with respect to time is referred to as

  Consider two copper wires each carrying a current of 3.0 A ri5vieh;s8sa5* 5gpk. One wire has twice the diameterrik eashg;58 5 ivps*5 of 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 zj46hnh+w -x7ccvyjy, )me4 scf;f;lresistivity becomes essentially zero at very low temperatures arcyc,c4 w+ jl7h zjvhnsxy) emf-;64 ;fe referred to as

  What current is flowing j64u fhbddh8 nr(rk8g.by6 h9if 0.67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes th2lzfi: uv-e 4vrough an electroplating apparatus in 2.0 min. What is the average currel -u2zvfei:4 vnt?

  How much charge must pass by a point in 10 s for the c3l+4ntjbr qac uet +d,ny(,j 8urrent 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 i 4w olljt. xgirs03h0o0hj9:wf $4.0 \times 10^{16} \; electrons$ 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 fors5*jq+6hy/b:ko i novwr60 cy 10 min. What is the net number of electrons thatv ibr: o+6*cq65k0yyj so /whn have passed through the coffee maker?

  In an electroplating process, it is desired to deposit 40a3v2 ene(bqg2 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?n3e2 abvg2e (q (The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential diffe+yt7 f- qq,am nsh,ut1rence is required to cause 4.00 A to flow through a resistance of 330n1,, t mfqa tquh-+7sy W?

  What is the voltage across a 5.0-W resistor if the current through it eq u3-+92xgh 0h.-um nqpwevs is 5.0 A?

  A 4000-W resistor is connected across 220 V. What current w(9b6kh u3s;z xy ziy+xill flow?

  A light bulb operating at 110 V drawph2 ,l 7cx fcq39yy256gy yx(bqomyk:s 1.40 A of current. What is its resistance? pg 57yk( 2xq,ly byhfc2y 9x6q3yomc:

  A 12-V battery is con hzeipk4 -ire- dn-kds9s:3.v; v6yk+nrw0penected to a 100-W resistor. How many electrons flow through the wire-sehpkk:dew+ 4ev- ivr.r -6p nkz0y d;n9s 3i in
1.0 min?

  What is the resistance of 1.zkai8cx) h7pfat3/8 )2ndmj k0 m copper wire of diameter 0.40 inch? (The resistivitxiap38 nj )ahkzd)tc8kf27/ my of copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diameter and 45 m long, if ty8k;r9ovg cm4 he resist vrm 4gc9ko;y8ivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resisti -n:trpz/2gcqt9 y+xvvity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wiszise 5:i*xu/ ,/qx vcre (resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 9p1giwk7 qv n).:t)/nrnxby em long, measures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius is 0.321 mm 3eqsno9 .bco+) nichrome wire if it is connected s+ob.oq cne39 to a 12.0-V battery. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cy +fhop g,*xuj+b3l 6ooc13sdm 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? (The red j+p+x 3u fsl,goo6*co3hy1bsistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichromc9 u-do padb.wl(iuz0np)r2-e 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 cow-u/ ha z2hhp)pper 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 w nbj9*o1hdtc+z0h) iresistance 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 resistn/o(2p vvvu .**ti5c uelsu:givity 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 indp q-i0bw( 8kbun)x no8ium. The resistance of the platii)xb-p8bk(08ownu q nnum 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 and5abgf 4w+k p1 $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current will ia.sis 87.oqq rt draw?

  A 150-W light bulb running on 110 Vlkp :4n3 smi2lmm gr )0gf+g4w draws how much current?

  What is the nominal resistance of a 100-W light bulb des-+atikgwi) 2tigned to be used in a 120-V circuii ag )+wi2k-ttt?

  A toaster is rated 800 W at 120 V. What is the resistamtw/ qg9f;0pfgps +,j (*-phi4l ojiznce of its heating elemenpfh/4g- o(,;ipl q pg9f0+ijmtzs wj* t?

  A 200-W resistor is rmjzq ge**/6luated at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated k9t1j qgtla1+bq3 tdmw9zi,.at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is use0d 4q1d8tqs ipd at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, what isl9pyx xi dx+0 dmnd wu1/f,nts6 hn104 its resistance?

  A 25-W soldering iron ru*dss x +;oyfrl +: s wfksg;iy+ t.qi+:qpk)7qns on 110 V. What is its resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0 hours, h3t4(c/ephy4o n sna/ if energy costht nh/ (yn/e p4a4osc3s $0.08/kWh?

  How much energy does a 100-W light bul dma7exl/ ssnch:0- s:b use in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How muc6 w;lt;k* 33utau spm g7jbw7wh heat energy is plg36 ;u 7a7wusb t;tmkjw w*p3roduced?

  A battery is rated at 12 V and 160 A-h. How much energy does the battery s/8v7jh lo m4qbtdqd 2br479xbtore?l7 8b 9 47 q/bbtxvdrhodqj4m2

  How much energy does a 25-W soldering irn3m8ff, vp8cs on use in 8.0 hours?

  A 100-W driveway light bulbz7iv x lb;2at, is on 10 hours per day. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost ta l2t,zx i;vb7o operate the bulb.

  A 400-W computer (computer plus mozgx.4(ww afo p-flj 42 m ey3boiqc-,*nitor) is turned on 8.0 hours per day. If electricity jx o,l*cqz-a4 4f- ew b3iywop.(g2mfcosts 10 cents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of run w8 x6qctb7v(tning a central air-conditioning unit vbtcx(w 86 7tqfor 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 an ,i nii 6acudfr6/y7bu4+.z d uelectric 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. In reality, the resistivity of the wire will depend on its temperature.) What effect will the repair have on the power dissipated in u,b/nrz6 ayf+idui6i ud74c. the heating element?

  14 A of current flowshv0/l1m.ys s)jb0s xm through $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costifbem.rn/ko z;8 yj,*s $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. How much cus9 -,w+t,gc xfb7cmbxz0c62l tc wbi0rrenbgzx 0 62f+bmx0wb,ctt l9 ci-sw7c,ct does it draw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to 3xcd e wkig( i7(ld,5ka 120-V ac power source. What rms current flows through this devic(e kx3id7lki gd 5,(wce?

  A 500-W device is connected to a 120-V ac /t.)rg augfk54a a9 klhbefhq6s..2k power source. What peak current flows through this device?h2e4bf .ksk9alak)5 gt/a.ugr q.f6h

  A 500-W device is connected to a 120-V ac power sou7w xa-ahnka .l8:p y.yrce. What is the peak voltage ac. -xh kyl .:8awypa7anross this device?

  The diameter of a copper wire is 0.081 inch. The maximum safe curre:gc3 pfsf6+d2hvoc; bnt 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 p b6;scfh2v:g3df o+c number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)