A device that produces electricit8y)7t oe-o uscy by transforming chemical energy into electrical o-t sy8) 7eocuenergy is called a

  A car battery

  The total amount of charge that passes through +eny1tlf v6u mt9bk0+a wire's full cross section at any point +t6tnf9lebu1y+0vmk per unit of time is referred to as

  The direction of convention current is taken to be (ri ohzmm 2ydy- /0b6rthe direction that

  A coulomb per secondw xyox+u 4hh6ho9 3;tt is the same as

  Car batteries are rated in "amp-hours." This is a measure of z ozds1fhvxau4 my+a qs2g9;f; 7w +1etheir

  The resistance of a wire is defined h(jg*,fm ztl lvk u 9cr*g.b4mwi96a9 as

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

  The resistance of a wire i0qv(ey z dvnu *v+r wb c,-dp)3yf:v/hs

  The resistivity of a wir;z cnlp*krn (4e depends on

  Which conducting material has the lowest sba8cze */hu7 m3kk h;resistivity value?

  Consider two copper wires. One has twice the lene- ,ax4vk9qn7eh 8vrggth of the other. How do the resistivities of these two wires coma9-ev gn,eh87qx v4krpare?

  Consider two copper wires. j81dul - ofd;eOne has twice the length of the other. How do the resistances of these two wfld d; 1-jo8euires compare?

  Consider two copper wires. One has twice j hs4/s0v8kc4x dk gl3vd*ge7the cross-sectional area of the other. How do the resistances of hvd7*/e8cd4vjg43k s lx kg0s these two wires compare?

  Consider two copper wires. One has twice the length and twicftyt)z jxy0djkhn46- )-s.mge the cross-sectional area of the other. How do the resistances of these two wiress6z 4hf.n ygdjtm- y-xtj))0k compare?

  The length of a wire is doubled and the radlw t 2wlr-m(y;ius is doubled. By what factor does the resistance chang2tl ;yrmwl (w-e?

  How much more resistance does a 1.0 cm diameter rod have compared to a-pbx pm(l(wj( 2.0 cm diameter rod of the same length and -(((blp jxp mwmade of the same material?

  The resistivity of most common4b/9 hguv )iwiui36kf metals

  Negative temperature cp+*dop8a3vre *:j w+7erg9e( eenioxh b6 nu7oefficients of resistivity

  What is 1 W equivalent to? cf pn9j (6hir,f*2vrv

  A kilowatt-hour is equivalent to 1z36s5bmt(w/d fsgnd

  If the resistance in a constant voltage circuit is doubled, tho6 *v d:q :*olvuog6 +q+pwisie power dissipated by that cw** :og6qdv v +q p+ilo6siuo:ircuit will

  If the voltage across a circuit of cons-l;4go(ymlsccc h6q2;v o fx+tant resistance is doubled, the power dissipated by thax4cc q 2fy;-6mslgc(;ohvo+l t circuit will

  If the resistance in a circuit with constant current flowing is doevj4jdd1 s*q+p)xuh6 ubled, the power dis vx1hq4su *e6d+d p)jjsipated by that circuit will

  If the current flowing through a circuit of constant resistance is doubled, the cerp 3/:j(kjgb8zul, power dissipated jjp :(l , b3zkrgue/8cby that circuit will

  During a power demand, the voltage out 0. mwoq zufi6u,p(;ykput is reduced by 5.0%. By what percentage is the power on a w p0uykz(i.u ;,6fm qoresistor affected?

  A current that is sinusoidal with ryhzn7rh ,dagen(.1v9 a buj0 6espect to time is referred to as

  Consider two copper wires each carrying a current of 3.0 A. One wire haclh* )+ m3swq0fjrrx- s twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to0-3rx m* )sclhfjw+qr that in the larger diameter wire is

  Materials in which the resistivity becomes es6ds 07nlb .yfjsentially zero at very low temperatures are referred to jl d0s.y6 fb7nas

  What current is flowing if 0.67 C of cho1chpa : c/wst o j58mzrx+/1harge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating app e*pr4 8lfe+qyaratus in 2.0 min. What is the average cur4* e8q y+fpelrrent?

  How much charge must pass by a point in 10 s ford/bt2b a ly6)xf i8qk/ 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 flowi g3shxf p;7ix3p n7koe .fqe07ng 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 curre sm5oj5qrk(u 2nt, has been left on for 10 min. What is the net number of electrons that have passed through the coffer55 j 2os(ukqme maker?

  In an electroplating process, it is desired to deposit 40 mg of silhx*b2:8b: )k e ap xbg1xywxh,ver on a metal part by using a current of 2.0 A. How long must the current be awp, xx2hb 8:*:e g )bbk1xhyxallowed 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 required to cause 4.00 A t/70m. hmgh defo flow through a resistangm 7fm heh/.d0ce of 330 W?

  What is the voltage across aklu*0t b,p h9s 5.0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is connectec9m a5t*1 * cfe: bxffk3lg1apd across 220 V. What current will flow?

  A light bulb operating at 110 V dr u2o pa(hdt3g+aws 1.40 A of current. What is its resistance?a(o2 g p3+tudh

  A 12-V battery is connected to a 100-W resistor. How many electr8*r)jwmsh rhqeu b+ s**vpq::ons flow through t*:+sqhq euj)*8w*rv bm :rsphhe wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? (The rvk7mpea(q0 gf0*er 8jesistivity of copper p 8(gvmkeq7f0e*j0ar 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.*mcpqvc0r3dya h y04, if the resistiv rdc*y3 cqv 4yhma00p.ity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resistm:)o pmevvnz(j:+r *m ivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (rerfy .hzs. (gab:3fk)j 8v8tcfsistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m lo *iibwh)4 ym 2ok,/8a :lcyrptng, measures 0.040 ohms. What is its resistivity?

  Calculate the current pjb),3qdqf e;g z l/w,through a 10.0-m long 22 gauge (the radius is 0.321 mm) nichrome wire if it is /3qefq w;z ,jd,gb)lpconnected 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 l/ntis( xg(vq0ong 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 resistivity of cop((vntq /0xig sper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire has a radius of 0ed-pf*x 7)lz v1 -xpu6qu3 qur.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 ( u;z:o.oby)xw+n -h lef 7f/dtresistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resistance of yh xhauinzv (m-3;/n7$18 \Omega$ 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 resist-).tdi dsi/im ivity 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 resistan qcdr szlm+0xj( 8*w3nce of the platinum wire rw(j*dq3zn xm 0l8sc+ 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 ac9 28m qbl5gqhk689 2njhoyjan $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rate iqm:mei3h3j-jyvlg 1kgn0 (9 d at 1200 W. What current will it draw?

  A 150-W light bulb runninon(7s4p l1q9zepr mw z0sqf1.oe*d. pg on 110 V draws how much current?

  What is the nominal resistance of a 100-W light 1:y )ivxc*s 9,w sui8 gssopm8bulb designed to be used in a 120-V circuit?8is scwsx sm yp)9:1*,ugo v8i

  A toaster is rated 800 W at 120 V. What is the resistance of its heating0bhf6,wj ra/h elementhb rj0af 6,/wh?

  A 200-W resistor is rated jh(zah;8 g xo j(c.8 (;h5lwpzv +ybagat $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is ratede :srqclu2;l. at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it ird v9 -aube9 0ia0cot,9 q3zwklj:ag ;s used at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used ato.lfn7agstja( 8ls) + 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What is its resistan kic)7a4tghm *;3 euupce?

  How much does it cost to operate a 25-W sbh b:0+i*og. yz uj0v1wafv;zoldering iron for 8.0 hours, if energy cwb+ z0bjfyvzgi;1vhaou .* :0osts $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 t puc8y++o f fu25;k*61t nw:kpghooihours?

  A 1500-W heater is connected to a 120-V line for 2.0 hsy pr0 dd3c0a85 bp1igours. How much heat energy is producedi 1y0dpas8gbp 053rcd ?

  A battery is rated at 12 V and 160 A-h. How much energy does thg-dncc qb7 (+ y8nw2koe battery store?nq7n2c y-g k bc8w(+od

  How much energy does a 25-W soldering iron use i74)btmlcp llf6f8jp 2 n 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuw 0t(mj/sw1 motqfw7m* a21msming the power company charges 10 cents for each kilowatt-hour of electricity used, estimate the anwoa s 0mmw1t7tq2ws1*jm m(/fnual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 goykjg36 7i.r(2 kwo vhours per day. If electricity costs 10 cents per kWh, how much does it cost to run the compu2.3y6 gwg v rio7k(okjter annually?

  The monthly (30 days) electric bill included the cost of running a central a snzu ftf :d9rnr)t)zz52 /w)kir-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 the monthly electric bill if electricity cofr 2k dwnzts5zr/9)zn)u t) f:sts 8.0 cents per kWh?

  The heating element in an electric drier operates on 240 V and generates heat.7*piuu g,z 4nlaykk8 pgca8oa(2 hd5 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 o845au*zgi ,lhgk287pp( dyankcau. will the repair have on the power dissipated in the heating element?

  14 A of current flows throughij(40v yfivcw yts+4jgv ,v-7 $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costnz2cg1ybf3g zzt/3.kkpx 6l oza8 1w3s $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. Hoe l raq8(3fs0 n3+gehq;:mngxw much current does it draw from a 120-V lfnegr3q3gn80as (+qm;ex:l h ine? ($1 \; hp = 746 \; W$)

  A 500-W device is conne v)2rj ai5lm9acted to a 120-V ac power source. What rms current flows through this devicevl aij95rm2 a)?

  A 500-W device is connected to a 120-V ach)t;2ha b ;exg power source. What peak current flows through this ;hb)e atgh2; xdevice?

  A 500-W device is connected to a 120-V ac power source. What is the peak vogc lbpv8yp ag ap3-75t59*om jltage across this devicem7po9lpc*5vbaa-g p58 g jyt3?

  The diameter of a copper wire is 0.081 inch. The maximum safe current it cahui; dcd2gya)4/ u9kbn 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 cub4 2/hua; cg9ikduy)bdic centimeter of copper is $8.5 \times 10^{22}$.)