A device that produces electricity by transforming chemical energof5bxwvj v6 /.y into electrical energy is called ojb xfv5./v6w a

  A car battery

  The total amount of ctu)me1d(xob8 harge that passes through a wire's full cross section at any point per unit of time is referred to (8 t1m )ouexdbas

  The direction of convention current is taken to bovuc +xjut y m*u(4j6+e the direction that

  A coulomb per secondu f9rvq-og95svm ij(5 is the same as

  Car batteries are rated in "amp-hours." This is a measure 0hvl( g/6xcjyy -fy 8iof their

  The resistance of a wire is defin8)gav o.km+-fid1on 9) shivred as

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

  The resistance of a wirer.j . +e/d(llgx osrs,zox :6b is

  The resistivity of a wirek8uuth(j)fm9 lh rq/1 depends on

  Which conducting material has the lowest resistivity valrom7pvlr.u1(6g/k lo -fk.b vue?

  Consider two copper wires. One has twice the length of the other. How osu 1wf.pdrll q(/+k+ do the resistivities of these two wires lwqs k/(+p.lf+or1d ucompare?

  Consider two copper wires.a3dmpp h46lvaga4 71m One has twice the length of the other. How do the resistances opd6gv31m lapa h7a 44mf these two wires compare?

  Consider two copper wires. One has twice qw2v9/vx9vio the cross-sectional area of the other. How do the resistances of these two wires com9voi2 / v9wvxqpare?

  Consider two copper wires. One has twice the abu3u r7af2j- length and twice the cross-sectional area of the otheau 3j7u-abf2r r. How do the resistances of these two wires compare?

  The length of a wire is doubled and the radius is doubled. By wyjc7vuqhu0 nd db77*it4, 0m3+k jkffhat factor does the *37u7f,kcu 0md07bt yjkd+h j v4iqnfresistance change?

  How much more resistance does a 1.0 cm diameter rod have c ak/ hr8rk7;qiompared to a 2.0 cm diameter rod of thk;aik 8/qr7 rhe same length and made of the same material?

  The resistivity of most common metx,h6 q-k e kud8p*cm7qals

  Negative temperature coefficients of rk1wbz j (j z9okps6e/1esistivity

  What is 1 W equivalen269 yvednp3v pdi0:r ubj8+md t to?

  A kilowatt-hour is equivagtqlq ny1r5*n/.aa 7olent to

  If the resistance in a constant voltag;(qi, ;l*;t 4wyt +o6/bam kwt:ju dr jj(ftehe circuit is doubled, the power dissipated bt h(t kl;mi4+oeub r wjjt,/y :j;;6fdqatw(*y that circuit will

  If the voltage across a circuit of constant resistance is doubled, the power di9)gd. urukvix t,g);lz 53dq assipat vu)xdd59zrl;kqt gi.au,g3)ed by that circuit will

  If the resistance in a circuit with constant current flowing ij(u2izho q8lz 5hv3.6 uqr ) k/x vcjpp),wz+ws doubled, the power dissiparv,hxu(+w3z qkuzp2lhj5q/j6pzw)c. )vo8 i ted by that circuit will

  If the current flowing th(qr 7nwznhx4- ece+q )1pvvp (st/nr u5p0k) crough a circuit of constant resistance is doubled, the power dissipated by that circuitu -crp zvnp47(5n)wk qx )rhn(p0/stvq+1eec will

  During a power demand, the voltage output is reduced by 5.0%. By wh(szrr8 s kdy;:wg5 yz8at percentage is the power ozgk 8sz:(y rry;ws8 d5n a resistor affected?

  A current that is sinusoidpkzk1- ,,5kw0g wcr apal with respect to time is referred to as

  Consider two copper wires each carrying a current of 3.0 3rge vp(;npcuc0a(2tygkp h4nxc ,(6A. 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 diametert khpp(cnu3eg0c6 np(,vx c;yg42ar ( wire is

  Materials in which the resistivity becomes essentially zero atp h(9 z8yabiy9 very low temperat98 yh(ayz9ip bures are referred to as

  What current is flowing if 0.67 C of charge2ur;du 21b b2zztn-hm k.e+m 5gyjmj 8 pass a point in 0.30 s?

  A charge of 12 C passes thg06z jkn1wl f;l-(therough an electroplating apparatus in 2.0 min. What is the avez1 0nlgw lf-ht k(je;6rage current?

  How much charge must pass by a point in 1057grn+ifin + wgp/j -ds+yq)m 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 flowiv;gz/m16qwp o*zz.e rng 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 been left on for 10 min. Whaqzywal12kr + szo;6 p6pa0ue8t is tue zs2p 66ka o ;zraqy1+p08lwhe net number of electrons that have passed through the coffee maker?

  In an electroplating process, it is desired to deposit 40 mg of silver .h)jjftrdsg- k8b/ +won a metal part by using a current of 2.0 A. How long must th dhb/)r-.s jf w+kjgt8e 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 requm t6beo9xrnv+m68 ol5ired to cause 4.00 A to flow through a resistance of 3308mxbm 9l6or6e5+ votn W?

  What is the voltage across a 5.0-W z ydvke;6t+b+n*9 czwresistor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. Wha xktesu)l /io;f6wv1*j7yy7lia w- 2ut current will flow?

  A light bulb operating at 110 V draws 1.40 A of currenqswyy/ 1s*z :8s;pmkg t. What is its resistance1kw;:p/msy gsy*z 8 sq?

  A 12-V battery is connected to a 100-W resistoedcancxxcaj3; :** .y h.wj 2qr. How many electrons flow through th2*dnj .c.:waaxxc*j qcy;3 hee wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of dia*p5vdj5fx67 m 1i*yyuud9r je meter 0.40 inch? (The resistivity of copper v76ujr* idypu5*f yj9 emd x51is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diameter and qg g:;tu-+.prax3jnq l9uy 0u45 m long, if theuu -u9:g+pgq3j0 ;ytra .nlqx resistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resii/ps a+r a+i8 pwmyx95stivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resekx 26 dxmc6a2istivity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 its resistikz) 9pn:o xn6ovity?

  Calculate the current through a pmc .x0kp ux0sd6h:u6 10.0-m long 22 gauge (the radius is 0.321 mm) nichrome wire if it6xpxc :h spd 0u6m0k.u 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-section, vw zm 36;dvdd31.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 Awvd63; zdv md3? (The resistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire has a radii+)rot:1w/ d nnl9kb vpni6 2yus 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 copperlj2 nw)3r2puk : xw5dp 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 resis0l7mtvvisub*f l tg )c5 /4cy;tance 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 plmr rz1*8))z 6)rwzjdikou h lts 47--kkr*etdatinum 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 indiu5vui 0 iu-y/h vqb45yr8-l xznm. The resistance of the pqi xulyy z/ 0-rbnviv58 4u-5hlatinum 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 throupv5)tyrl ++,4y m;uiiafojz ) gh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current will it draw2 *hmws0ed.s t?

  A 150-W light bulb runny+ tfrfe i t2spxq,(r2 j9.k,eing on 110 V draws how much current?

  What is the nominal resistance ofc3* m7yg+ litp a 100-W light bulb designed to be used in a 120-V circuim3+ y7*git plct?

  A toaster is rated 800 W at 120 V. What a.kvw8up -os.m rih 470yh4ez is the resistance of its heating element?iea k 7.zvy4wrsouphh8 4m 0.-

  A 200-W resistor is ratekmck+jet4fw 2xr * i.42qy7fa d at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rat: 4 ej0+7vuxpulitj7ved at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what currenfp*-- nckz/ fjt does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, what is its resistans jscdj ,*3tr,nxkc 31:hj/pyce?

  A 25-W soldering iron runpschp :76kio(kz q6:a s on 110 V. What is its resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0 hours, i27sp95qu*wezb/ubxze r ; p.mf energy costs ue ep z9q7b/*5.psb;zxw2rmu $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 hours? e)c7 db.y:xrqv3dv j-

  A 1500-W heater is c5f;qi o p(xjzyg6bbkl)n .-j -onnected to a 120-V line for 2.0 hours. How much heat energy is p5fjip -k(; zn obgybxjl6.q-)roduced?

  A battery is rated at 12 V and 160 A-h. How much enj yfid (m;efc84yfqaf 4qd5wu8; g..dergy does the battery store?.demgaj .4q(iffcfdqyyu8 w;54d f ;8

  How much energy does a 25-W sold3nm* zi8jvtmmx e* .+lering iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per daye;su1lv; d(2m r ps+ug. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, eg;r lum s2( esu;1vd+pstimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is tut 6dva85b +osjrned on 8.0 hours per day. If electricity costs 10 cents per kWh, how much does it cosjb8aovd s6+t 5t to run the computer annually?

  The monthly (30 days) electric dcn3t3)gzy 16ad46cu9pd) ;ap vtm bx bill included 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 thevxm3;up6t 69)3p gn zb )a4dc1ycaddt monthly electric bill if electricity costs 8.0 cents per kWh?

  The heating element in an electric0bbh ,ai* t4fm 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 theif*a0mb 4t b,h 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 througbw w .td2baggu 7*.k+gh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costsd qbdyg- x3g0:,z8 dpe $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. Ho14z2vp zcyr7vw much current dvpyr 1c74z 2vzoes it draw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac pow,vt8e: 7csk:ein5p zm er source. What rms current flows k 7:e: v,5mc nszeipt8through this device?

  A 500-W device is connected to d thm7;.lg lswsey;r-y jo1:*a 120-V ac power source. What peak current flows through this devih j7s-;yldeo* .1 lgr ;:ywtmsce?

  A 500-W device is con:u, cva,ilt 6vg p;nkpk78 d7beu4gr 4nected to a 120-V ac power source. What is the peak voltage apv7g 44 c6b ,a;kdiu:krptlguv,ne 87cross this device?

  The diameter of a copper wire is 0.081 inch. The max);far q5:dyux:7x xh u /gymr9imum safe current it can carry (in order gx y: uxr:qa)7 5hydx;f/9umr 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 $8.5 \times 10^{22}$.)