A device that produces elecz. i2x obony3ruu* 1qr:1 px3xtricity by transforming chemical energy into electrical eno3 x*u11b3rxnx.oqy iuz 2p r:ergy is called a

  A car battery

  The total amount of charge that passes through a wire's full crohty- tj/w d) ma0uo;l ;4z,,kr bfdmfy2/6hgkss section at any point per unit of time is referrefwkkh o;hybt) m ft 4m-jayd g,0d /2zr6/l;,ud to as

  The direction of convention current is takc( h: 78my0+o6xh tf;-xsrxqnn.s wo nen to be the direction that

  A coulomb per second is the sa oyxd77ta*v+ u8d qtxh(4tl7 zme as

  Car batteries are rated in "amp-hours."cse8siy ;* 1b38tljcx This is a measure of their

  The resistance of a wire is defined aon:(u hx6pgf *aw3j1bs

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

  The resistance of a wir bta +- jzi.i7dlk4z;ae is

  The resistivity of a wire depends3vso+)xratm(se. n +x on

  Which conducting material h 2gk1(k bzki3fc:- mv5) f4ycyhek*vqas the lowest resistivity value?

  Consider two copper wires. One hassbdo-dym +asp.*:8 gt twice the length of the other. How do the resistivit-*oga s8mt+ . sbp:ddyies of these two wires compare?

  Consider two copper wires. One has twicepif fg)x*- j8m the length of the other. How do the resistances of these-)8 ffpxgmj* i two wires compare?

  Consider two copper wires. One hzoecb1n n;a q4j0gd+4n.gp p8as twice the cross-sectional area of the other. How do the resisd;pe0 jzo1na4 cp gg qn.n+8b4tances of these two wires compare?

  Consider two copper wires. One has twice thgc eqla2 u+0bxc; 74lhe length and twice the cross-sectional area of the other. How do the resistances of these two wires co24cu+7lhbl c;ae gq0x mpare?

  The length of a wire is doublv1yxzs2 u c*b:ubt;6 gj5 7gnzed and the radius is doubled. By what factor does the resis v5c zn6z7gjbu;x :y2b 1g*utstance change?

  How much more resistance does a 1.0 cm diameter rod have compared m0a9,dg rz,kxn*hb:jvz 7l0p to a 2.0 cm diameter rod of the same length and made of the sa0zg0 ,djpxv*b kz nar7:l,m9hme material?

  The resistivity of mooxntxnt6i;e0xfp i +h2z2h2y(x u 1w5 st common metals

  Negative temperature coefficients of resistivi *g4uagl ga+3kty

  What is 1 W equivalent too8j7mk00o but?

  A kilowatt-hour is eeqh0w)sjt- j2 quivalent to

  If the resistance in a constant voltage cin(a .d 3+kgrnbrcuit is doubled, the power dissipated by thand. ng( 3rakb+t circuit will

  If the voltage across a circuit of constant resistance is doubled, t m8m+hlr- cfo;he power dissipated by that cir-m8r h; mfolc+cuit will

  If the resistance in a circuit with constant current flowing is /,lt i h-fgw+wdoubled, the powlw,hw /f+gti-er dissipated by that circuit will

  If the current flowing through a circuit of constant resistance is doubled, the u +, w -le1,itg*mqelx)wv*xczw(vu5 power dissipag*im q-1*xe 5elt,u) v lc vx,ww+uw(zted by that circuit will

  During a power demand, the voltage output is retew,zu8u b e9 xk/ +b/ s5cka*;hzaf6zduced by 5.0%. By what percentage is the power on a resistor 9zehba85/zkuw6 eux/ act kz,sb+f*; affected?

  A current that is sinusoidal with respect to time iskf94p gj ao;8c referred to as

  Consider two copper wires each carrying a current of 3.0 A. One wij;):a k*ua gzxre has twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to that :)j*azg;uxka in the larger diameter wire is

  Materials in which the resistivitraxh037 qayohglb.ql33 21bv y becomes essentially zero at very low temperatures are refr1hb v33a7l hgq0bl2y xq3 .aoerred to as

  What current is flowing if 0.67 C osndsm9(u(a2 y f charge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating apparatus in 2.0 minnzoylb1: ,i:l,u9aar . What is the aa:1runzab y,i ,l 9o:lverage current?

  How much charge must pass by a point in 10 s for 5.be8w-s/fl hdc /ujk 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 flowing if7zg ojtc:gjq2zg8 28 sut-cf5 $4.0 \times 10^{16} \; electrons$ 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 drawc33b9xi 8qbexs 13.5 A of current, has been left on for 10 min. What is the net ibexqb8xc 3 93number of electrons that have passed through the coffee maker?

  In an electroplating process, gjfo./n8jd7h2b/w i git is desired to deposit 40 mg of silver on a metal part by using a cu gj g.wh2f8 n7idjb//orrent 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 silver is 108.)

  What potential difference is required to cd:4 1g ;e2dmnmexd,wnause 4.00 A to flow through a resistance of 3 ge: mn2 dnwdxdm4,1;e30 W?

  What is the voltage across a 5.0-W resistor if the current through it is 56olc2 dz 6t6ib8nqsn d 9qp-+ r.xzmj8.0 A?

  A 4000-W resistor is connected a,p)c 8 kkfu/.orrjk;scross 220 V. What current will flow?

  A light bulb operatingg+dz 87 dpa-de at 110 V draws 1.40 A of current. What is its resistancedgd+7 pze -da8?

  A 12-V battery is connected to a 100-W resistormr)y h/i,/ vyx. How many electrons flow through th hx),/m/riyv ye wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of. 2))azbme lacuq)mt b*x2o+f diameter 0.40 inch? (The resistivity of copper +x)mq b)m.uoe 2zb c2aa*lft)is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 inmo.3rp.su 9za (q;zcm in diameter and 45 m long, if the r. .urs izoq;n3 m9p(zaesistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resistivityp5yin53ls4i j $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistivitu p,j*jg iiyzq7vhf p46g6u-n67 * sady $1.68 \times 10^{-8} \; \Omega \cdot m$) 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. Whytt) ;i,ri/lve39fr s at is its resistivity?

  Calculate the current through a 10.0-m long 22 gaup0s 4vl( +bbphge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. (The resistivity+bvpb0(lsh4p of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cross-section, 1.0 jrlk*2g/0pj. xvlw7i cm x 2.0 cm. What is the voltage drop along its length .gj 72 i/0lxp wjrkvl*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 habo,jj 2-nm-cl9* -kqpb 3 le;z) gonsqs 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 copper wire (resistivit ))hknuen2g4aku ;mb 83jnj9m y $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resistanc 0u;kv b(vy6rce 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 resistibqxj; 3b9-xxko+;mlsqj03 v nvity 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 thbb+p 5 k +q7al1ctmd2ve melting point of indium. The resistance of tht7bvaqm5dkb1+ 2c+p le 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 through an cdd,fnl((g1 h$10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is ra :8wh9v jlpi1ated at 1200 W. What current will it draw?

  A 150-W light bulb running on 110 V draws how much current?m7ep 9q .pmd6nds8e7n

  What is the nominal resistance of a 100,h8mvf69 (x tiin-h7a2 smluq -W light bulb designed to be used in a 120-V circu2,tmm8x n 6iq a7fsvi-hhu9l (it?

  A toaster is rated 800 W at 120 V. What is the resistance of its heating y85l iczfc4zpp6s 0i-element? 4 8z65y-0p ciczplfis

  A 200-W resistor is ratevh59x zgc.t7u.*(fcqxr cz l-d at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is ratex9zr7t969lqmngmnb91tok p * d 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 dra,wid:4a: pc+5s ol bqew?

  A lamp uses a 150-W bulb. If it i4el j :drl9q 40g6gknds used at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. Whatv8r-,qzi jg9/ qnz)z d is its resistance?

  How much does it cost 4ryrti sdz,w(,xqw 2:to operate a 25-W soldering iron for 8.0 hours, if energy c: sw(,4xd2qy tri ,rzwosts $0.08/kWh?

  How much energy does a /et8x tde8d8fk8n h xr/2(o djlncn+k,x3wp 1100-W light bulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for )ln6y 6wviov/gp 45q+oq,j) j1lgjcb 2.0 hours. How much heat energy is produced?co4)5v/, lg6 +jlnip 6q1jqwo vyg)bj

  A battery is rated at 12 V and 160 A-h. How much energy does the ba 3;.be/ 3lhx;oad ebdqttery store?.e ;ld/;h 33 axebdobq

  How much energy does a 25-W solderingj5w 4rd u9je,k iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. A ucm3npqi /;8rssuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost to mc3qu irp;8/n operate the bulb.

  A 400-W computer (computer plus monit dfz74z-ak6 mtor) is turned on 8.0 hours per day. If electricity costs 10 cents per kWh, how much does it cost to run the computer annuallzzt7-m6da4f ky?

  The monthly (30 days) electric bill included the cost od/2m v6bi/x 4;lw+l gzyv:nk)c nsnn o:7z qy0f 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 ogn+ 2k6bnl 4n0iq:mly;zxyc )nsdv //7wvz : 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 drrldyrgw2y8 q ((mo 0yg ;):bfhier 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 2rqlygb0)yfo h 8((;wd:mr gythe power dissipated in the heating element?

  14 A of current flows througb )h,-n9ts3 ( tzuq,ewpz8vhdh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs-vgg 6:-kng.eh hh9lnkm c/( p $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 m89(xg qto *o8crti -acuch current does it draw from a 12ioox-tg( *cqc9t 88r a0-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120eym 1 ;unm ;.s5 r1njkw ;ka(h(paf:gw-V ac power source. What rms current flows t(aj a;w. ;fwk5s(gyke1 h :numm; rn1phrough this device?

  A 500-W device is connected to 0e t)s*r ujg)ia 120-V ac power source. What peak current flows through this de ut*i)s e)0rjgvice?

  A 500-W device is connected to a 120-V ac power source. What is the peak volta05vbb)dw hu(3 h-deez ge acz)5- (d bdwebe v0uh3hross this device?

  The diameter of a copper wire is 0.081 inch. The maximumlof 8 2kpl pf*ts/7:bq 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 cubic centimeter of copper is 7 pl:k l2t/pqbs8fof* $8.5 \times 10^{22}$.)