A device that produces electricity by traak e3q;msbvljk 5 t+3t2(8y: u i*rjofnsforming chemical energy into electrical energve5k( *+tyjum2k fo ;isa8qt :jrl33by is called a

  A car battery

  The total amount of charge that passes tohd74o o ,rd(q7h6 vcyhrough a wire's full cross section at any point per unitd4qr yo dc6 (o,oh7vh7 of time is referred to as

  The direction of convention current is taken to be theoh 2z.(mupxa7 direction that

  A coulomb per second jk4 k(nqr3kr-0fr9 2bs-;wkpv pzk b4is the same as

  Car batteries are rated in "amp-hourec)rx2 : 4k9pnku.hss s." This is a measure of their

  The resistance of a wir :hjlmk/xf-g9 l+r ;..iowtdy e is defined as

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

  The resistance of a xb+ a2 krqge*;h9k vp/wire is

  The resistivity of a wire depeldjdb1mnc( lj d0/3 (*qxlff3nds on

  Which conducting material has + *rhsjo8yj+rthe lowest resistivity value?

  Consider two copper wires. One has twice the length ofhbwl -/ckl q,b3-dy/ g9llp*a the other. How do the resistiviti, wgpqcb b/lh/y9k*la ldl3--es of these two wires compare?

  Consider two copper wires. One has twice ti 9kog(13a/qxq m*xhuhe length of the other. How do the resistances of these two wires comparekuh 1a iqgm39xxq*/o(?

  Consider two copper wirl ok+6pp 43b0ks2z guses. One has twice the cross-sectional area of the other. How do the resistances of these two wires comp ss64p z+kog03 bk2uplare?

  Consider two copper wires. One has twicnnk+hr(g 3f 0ee the length and twice the cross-sectional area of the other. How do the resistances of these two wires comn0frnh+ (3e gkpare?

  The length of a wire is doubled and thgp270.w -kiyged+*qsnn)zfv e radius is doubled. By what factor does the resistance c*0y ggn+q2k-ep7viwzsdnf. )hange?

  How much more resistance does a 1.0 cm diameter rod have compared to a iyqq pqjor*eih -4u4b w79u3 52.0 cm diameter rod of the same lene*rj uh9u3iy 4-q7pwo i5q4bqgth and made of the same material?

  The resistivity of most common mycu+g0r.t w.hetals

  Negative temperature coefficients of re0 k2zmnj*amb7w8ig s*1vw 0fa*p fch3sistivity

  What is 1 W equivalent to5dk dz jgt(3)d?

  A kilowatt-hour is equivalent kjgj7)o+8q 96iz,gsj hf-tkr6pe*roto

  If the resistance in a constant voltaguync q-ioer,4s/0gq; )l3 lkqe circuit is doubled, the power dissipated by that circuit wil yi k ,qo;n-lsr/ 3leq4gcuq)0l

  If the voltage across a jx()e8vr ,eps circuit of constant resistance is doubled, the power dissipated by that circuit wi8pv jxsree ),(ll

  If the resistance in a circuit with con oax bm 6l7e(0t(kt2mystant current flowing is doubled, the power dissipated by that cir7a mxm (2 0tk(yeolt6bcuit will

  If the current flowing through a ci06)f c x qkjoklhis:(2gz t((mrcuit of constant resistance is doubled, the power dissipated by tkskhfjgl ( i(q:6 )tzo(mx02chat circuit will

  During a power demand, the voltage output is reduced by 5.0%. By what percentaj8ku h6ik-f9 19 tsgmxge is the power on a resistor affectjh9 tmikx -8k6gf91su ed?

  A current that is sinusoidal with respect to time is referredt r ndxfk oo ;j/g/suy9qym ap57(:7t6 to as

  Consider two copper wires each carrying(evppr g-o8l ic+;em : a current of 3.0 A. One wire has twice the diameter of the other. The ratio of the drift velocityoivcp;pg mr8 e: e(l-+ in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially zero at very l1oliaqq/ g,e-ow temperatures,/gle qqia-o1 are referred to as

  What current is flowing if 0.67 C of charge pass a point in 0.303/kwe8kl )fmc9y odd , s?

  A charge of 12 C passes through an electroplating apparatusk g:ztf i e9s/g76j2:ksoelu4 in 2.0 min. What is the average ce4e jtkgk7:fsz /9 :sl6ig2ouurrent?

  How much charge must pass by a poi .cq9n 9k uikgtv5x,7i ;8r2pyylh mc+nt 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 flowin4vzqcq8gpi;w/u+ku7u 8a + pk ,m5pdug 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 draws1hf8(dd0rh pn 13.5 A of current, has been left on for 10 min. What is the net number of electrons that 0f(8hrdn dph1 have passed through the coffee maker?

  In an electroplating ;7uz0*o , onvter)xxfprocess, it is desired 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 silve z0vuoo;*tr)7f,xex nr is 108.)

  What potential difference is required to cause 4.00 A to flow through a resistantrq c )8cx-hq:4vos dqtbx 3 0(e8:nmnht*v:hce of 330:-: )*:(3no0cdq v8qshrqh ttmv xthxb c 8ne4 W?

  What is the voltage across a 5.0-W resis5m1s e 3ve4befehbq4 b;rt+3gtor if the current through it is 5.0 A?

  A 4000-W resistor is connected acrosd (8jrx,q t*cykk-d4js 220 V. What current will flow?

  A light bulb operating at 110 V draws 1.40 A of current. What is its resi ue dp:yx2;(brstancebyxd2(e ;r: pu?

  A 12-V battery is connected to a xy3j hqi:h ;)d100-W resistor. How many electrons flow through thedx 3i)qj;yhh : wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inchok1 4ctjg*9q5z tcty,? (The resistivity of ccz 9jtgyqkt45*otc,1opper 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, ifognhti 1 k5nxs7uql 2e3*. m8j the rjsuo 2gnnl517i* k3qet 8.mhxesistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (rez-xzs0 /h/y gjnvzm ew9q0z5,sistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resq8 psr+:rnp8 uistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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. Whai 8zb*vkfa,f(a. d )nat is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius is 0.321 svhqos x60sp akj: 71o-.dh3 emm) nichrome wire if it is connected to a 12.0-V battery. (The resistivity of nich .vp h7-60jqhos1ssekod3 x :arome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cross-section, 1.0 cic06/(rn s.k*prj eulm x 2.0 cm.ncj6 0u*( rkpire.ls / What is the voltage 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 has a radius of 0.50 mm and a resistivity .z j),+b4vfoplkqd 4w 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 (resistiv,r: o j.o ;bfsvz,e)lvity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resicz0cyi 1/ zqz2stance 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 platy,x9qn3 0p1 bp: gx1 -q3bbd4 brfhoebinum 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 usp.huyx2 l fc1b7u6wf5uazp5, ed to determine the melting point of indium. The resistance of the plp lb uy wx,5z.5 c2u76fahf1puatinum 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 om+iyq zk7 .1pmf)mr hai3t/;djar7eg;z 4j 6an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What currentml 1)visnvo/e26d tq0 will it draw?

  A 150-W light bulb running on 110 V draws how much+i85+ cj. hm oqebul8n current?

  What is the nominal resistance of f i;/lfu++sh. rd ump5a 100-W light bulb designed to be used in a 120-V circui +/ ;fm iu.lh5fpd+rsut?

  A toaster is rated 800 W at 120 V. What is the resistance of its heating elemenbkw3-g 4 boxt.t?wbg4 kx. 3o-bt

  A 200-W resistor is ratez5xq ar(uphx1f6/c c 4d at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is r)pkmj e8s5f 0vated 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 draw?3sxg0a;6o99lcisp7 sr:nrq m yjm k4.

  A lamp uses a 150-W bulb. Ifgs2z baqagx1.t s8)+ d it is used at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What is its r,3ny)wlgea287bav q fesistance?

  How much does it cost+-9g: kx9ffq,* dmb h ae(hujo to operate a 25-W soldering iron for 8.0 hours, if energy cos-j(oaq ugbf:k9+h9,h*m dxe fts $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 hout1i4fkh6jeav3 v 3 xcjr7e+3 rrs?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How much heat enemvmd1c5n nr) yq,;4ab rgy is proanq c v;m51drm4n), byduced?

  A battery is rated at 12 V and 160 A-h.6m e5um 6j44an8kabb cn y0ct0 How much energy does the battery store?um nc tb5ynk4m68 ejcba0 64a0

  How much energy does a 25-W soldering iron use in 8.0 houugq,i/,*ik clrs?

  A 100-W driveway light bulb is on 10 hours per day. Assuming the 9i.f4f+;weyi8ow l k spower company charges 10 cents for each kilowatt-hour of electwl9 .k+;ioifywe4s 8 fricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) isot rw uc8+xd21xh5 x)z turned on 8.0 hours per day. If electricity costs 10 cents pe8x dwt)zo1 5rc +xh2uxr kWh, how much does it cost to run the computer annually?

  The monthly (30 days) e;fmybn,we1u * 0ux6:oa eqv- mlectric bill included the cost of running a central air-conditioning unit for 2.0 hr/day at 5000 W, and a seriesfn6*y0vw:b1 xmae ;quo e,-mu 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 electric drier operates on; ,ixem;ip1z mnh;d 4s 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 e 14m;dix;z p,n;ihsm 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 through v3gmmsh37p9h-f cqx9$8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery cost3;1rfk def un3s $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)roylgxyzzy985)bync)36 xkk 1-tss 2.0 hp has 60% efficiency. How much current does it draw from a 19 6)z1lo ryxkycy -z 5yn)8bgxs)3ks t20-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 1e 9nu8ga;7rl gk; a..cjeje 5n20-V ac power source. What rms current flows c; j.7a;8ee ggrku9na.l5nejthrough this device?

  A 500-W device is connected plhezkpo/q.3wwu 06nb le bn60*j,hqui+q59to a 120-V ac power source. What peak current flows through this dee 9.pb3+uwp05jbz6n qewnlhihl/ku6 ,* oqq0vice?

  A 500-W device is connected to a 120-V ac power source. What is the peak vvi+aadu 6 y:fl6+45f mbl;i g.w hjn(poltage across thy56+i.+bjdlag6uvian 4; hl :wff( pm is device?

  The diameter of a copper wire is 0.081 inch. The maximum safe current it can 7vd2;mm fs620eeuo l(t jc) l(jz rh2rcarry (in order to prevent fire danger in building construction) is 20 A. At this current, what is the drift velocity of the electrons? c)22( v60h tjerr fdm72eo;l zjsm(l u(The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)