A device that produces electricity by transforming chwi8nq,p 2 rhp+emical energy into electrical enerp hrw8qpn2,i+ gy is called a

  A car battery

  The total amount of charge that passeser54nr6efpobi 1 i9f. through a wire's full cross section at any1 nf. pif b6e9o4r5rei point per unit of time is referred to as

  The direction of convention current is taken to be the/*y 6ddrbg,b+,;9wl qohh bx u direction that

  A coulomb per secondv22o, du d8, rczk3q mapoh,v) is the same as

  Car batteries are rated in "amp;o6d.i ff)k*u -p cvjw-hours." This is a measure of their

  The resistance of a wire is 12 3biiahk. fzdefined as

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

  The resistance of a w9 ukybv6 n z*s/wqf j,e;-)4bx iik;xnire is

  The resistivity of a wire depends ozt+ios.5f3s jn

  Which conducting material has the lowest resistik aek)a5z j5x7vity value?

  Consider two copper wires. One hajsho6pk7/fymk f0x/.s twice the length of the other. How do the resistivities of thesfkkxj/o y6.p7/f0sh me two wires compare?

  Consider two copper wires. One has twice the length of the other. How do 7zhme; )vd2hpt l- wnni* sk6/1lhy2r the resistances of ;iy)/zkn2s1h lnv dte6hw - mlpr*27hthese two wires compare?

  Consider two copper wires. One has twice the cross-sectional area of the otherokn1n.6 cx3 st b6p9ch. How do the resistancecks3 p69oc nh6nb. x1ts of these two wires compare?

  Consider two copper wires. One has tycj,ov9:lbenfdb k4an85 d-+ wice the length and twice the cross-sectional area of the other. How do the resya,bc+d fe lb4 n n:j-95kdvo8istances of these two wires compare?

  The length of a wire is doubled and the radius is doubled. By what facto ksao1r -+3gtir does the resistance ch +-1gstaik ro3ange?

  How much more resistance does a 1.0 cm diameter rod have compared to a 2.0 cm ra34xu :xvhy( diameter rod of the same length and made h xurax:y4v( 3of the same material?

  The resistivity of most comj w/prg 3 gvw7bsf.n49dig,j;mon metals

  Negative temperature coeffic+6*vz( k-0x mpxjusjyients of resistivity

  What is 1 W equivale+ cf/ mi;hfl8y-r 5rawnt to?

  A kilowatt-hour is equival4u3rbf hz- 3xwent to

  If the resistance in a constant voltage circuit ist:(i ib vf2mhm1 v8vj4 doubled, the power dissipated by thj1h: biv v8 v(i4mtfm2at circuit will

  If the voltage across a circuit of ca9jot3xrk b) 4fpq/: ponstant resistance is doubled, the power dissipated by that circuiaxrp9jbtkp) /o4 f3:qt will

  If the resistance in a circuit with constant current flowing iso*h4kcajbvvgy5i ,xjw 4y v-. 1(dc n+ doubled, the power dvc,kad14xi*jhvo(bw -yvy j5c +ng . 4issipated by that circuit will

  If the current flowing through amre+.0xu we9c circuit of constant resistance is doubled, the power dc. ru 9+w0exmeissipated by that circuit will

  During a power demand, the voltage output is revc * hb n9am)6dv4 zq:,n oyo; zis)es(pc/ig-duced by 5.0%. By what percentage is the power on a resistor affeb6m*z ;)y 4/vivs9 (socgadpz,n i:nhc )q- eocted?

  A current that is sif2k5,o0ijj0xxk l47y ab h-btnusoidal with respect to time is referred to as

  Consider two copper wires each carrying 2d:j8fqx+q qf a current of 3.0 A. One wire has twice the diameter of the other. The ratio of the drjdq:ffx 8q2q+ift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentia1 iejr,bsg rja 2u0p9.lly zero at very low temperatures are referr02aiusbg1rj pje r9 .,ed to as

  What current is flowing if 0.67 C 4-6 62pdsx smgawk:hgof charge pass a point in 0.30 s?

  A charge of 12 C passes through an electrpve1ofa2m np93x ;n 52nbv)xkoplating apparatus in 2.0 min. What is the average curbnp xx 9; p3k 5fv)nme2n1vao2rent?

  How much charge must pass by a poino+a x4l5/3 ybn n*mxyru,(r wgt 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 flow3 lunk-bv* +sging 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 current, has b ebwnd3w7xj /2een left on for 10 min. What is the net number of electrons that have passed through the coffee makerw/23 jwx7 bned?

  In an electroplating process, it is desired kt*ojri6o *,b * osks6to 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 runjkos6*sb 6*trio ,k*o 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 to flow ,-fyi) 0qtpv a8q )pxuthrough a resistanc iuv,tap y-)x)08p fqqe of 330 W?

  What is the voltage across a 5.0-W resistor 0 lozlj/*ktr;u cy 6o3if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What currentt/;bc+qi +mci will flow?

  A light bulb operating at 110 V draws 1.40 A of current. What is its resistancezmau hgtd z,s7b+ ungem 4)6s:e n)37n? zun7me:h)s6d+ tbaz ugn ,47nsmg3)e

  A 12-V battery is connected to a 10:o l5,xc ckb/c0-W resistor. How many electrons flow through the kcxc bl,/o5:cwire in
1.0 min?

  What is the resistance of 1.0-f 1 g0wqdd+yz(yj1me m copper wire of diameter 0.40 inch? (The resistivity of copper is my+fdg-1y1dz qe(0wj $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diamete ov7z 6qpqmad 1yk4k,fg-h)f8 r and 45 m long, if the resifo) qm4-kqdfy 1gvpa 87,zk6hstivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper kqy,2a /9bqirwire (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 wi aromfm*b s6,;q/jb 652 xvhwvre (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.l)evu 7+;xaoz 2nkbp( o.s1h 3a3 uisw0 m long, measures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-mrhh vpu6,4 eeru/k-, q long 22 gauge (the radius is 0.321 mm) ni rh -4r6vh, /,keequupchrome wire 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 cm long and of rectangular cross-fks2zhih u/h/ khyk.vv3/9-tsection, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (The resistivity of copper iht-./hh izuhsv/ 239v/kkkyf s $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire has a radius of 0.50 mm and a ttjt mjvj t30n1:w 3;wresistivity 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 (vhyz+s mj)(f8 kq 1*oyresistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor hasz+m garc+dg((.ip,o0p8 o * ivhjpor( 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 ks lo++ s9,z)x;driib 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 us rft) r594cemred to determine the melting point of indium. The resistance rrc) 954emfr tof 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 thr.q 27+g9uruhkp df8btjb w 5z:ough an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What curmx7 bo cd8 oq 3ed)f-.,kirw4hrent will it draw?

  A 150-W light bulb running on 110 V draws h2j ev1h* b4e5 jvkmk7cow much current?

  What is the nominal resistance of a 100-W light bul. m7)m5b:rl-il.p wpxl 3dqgg b designed to be used in a 120-V circuppl3-g5)mlribq. m. gw:7 ldx it?

  A toaster is rated 800 W at 120 Vd c azt::s3ogn q:34nx. What is the resistance of its heating elementog3t3zn:a 4n q ::cdsx?

  A 200-W resistor is rated at :b9s ay f6 onqgxgozw32 v.(j8$1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rat8qzn;*dp ymcv ip ,21sot5 w/qed at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what cdmo l5dcoqpsik5g2)yfs 01r.k. s1p , urrent does it draw?

  A lamp uses a 150-W bul unlxnzfqq :)c9y.sjm62kr8. b. If it is used at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What is / angzui 9wdwd8/. z3wits resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0 hours, if ener ee)g,4xcy. jh6e8 7nddsy )znk3;qmygy cosj z6g4)h cn;xye)dm3yqk y,. ds8nee 7ts $0.08/kWh?

  How much energy does a 100-W light bulb use mfx m: k5m,e rs,ay5,c,;elhiin 8.0 hours?

  A 1500-W heater is conneluv70 q.h*,ld bonai*cted to a 120-V line for 2.0 hours. How much heat energy is p,uhd.n*7 b0*i lov aqlroduced?

  A battery is rated at 12 V and 160 A-h. How much energy dol r2qjxvcf 0loh,.n 43-d-e ioes the battery store?-l32dlqnh . o0re4jvf c-,ixo

  How much energy does a 25-W soldering iro1l0 m *-8fx w(qytjczfn use in 8.0 hours?

  A 100-W driveway light bulb 3di , dtqqn1ap:) crozp-m5a8is on 10 hours per day. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, eonm:, pdp-t d ra5cq )z8q3a1istimate the annual cost to operate the bulb.

  A 400-W computer (compd5mm c (dlpy.1qn(ev m71ba6juter plus monitor) is turned on 8.0 hours per day. If electricity costs 10 cents per kWh, how much does it cost to run the c yal. 1epm d(1bcm65jmvn(7qdomputer annually?

  The monthly (30 days) electric bill includedw5r.4 ev ba hrjv+;)jk-l su o9h3-fws the 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 did these items contribute to the cost of th 9-ea- .)wfrks5uj 4oh s;bl3 +wrvjvhe monthly electric bill if electricity costs 8.0 cents per kWh?

  The heating element in an electric drier operates on 240 V and generates hea :vp:ic5jo ax8t 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 unchpvia 5o:j :xc8anged. 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 -(6ujm o vrec(through $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costsg qq .5stdqo/ -wa,wc;rs4h* ungrm5) $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. 3uzkrj/+ov1.2lh, pb9pd x rv How much current does 2v xr/9pvz +1.jpol kub d,r3hit draw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power)bydh+jp x--gayh3 ip mhu:sz++g9p6 source. What rms current flows through this device++3x9hh--my+)g 6jzpyi: b hgsdapp u?

  A 500-W device is connected to t1u,6k:ho;erey kwr7 a 120-V ac power source. What peak current flows thrk;: k61wyu ,e 7ertohrough this device?

  A 500-W device is connected to a 120-V ac power soqkcg., 2ik ti+dz; j3hurce. What is the peak voltage acrosh gj+dkt;3 .iqc i2,kzs this device?

  The diameter of a copper wire ishbbzbywwz c8j f5)4n t:e;j02 0.081 inch. 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? (The number of electron carriers in one cubicwjh50:tf8yb jbc n4eb z2wz ;) centimeter of copper is $8.5 \times 10^{22}$.)