A device that produces electricity by transforming js/z.me8r ;g tchemical energy into electrical energy is/t8rme. jg; sz called a

  A car battery

  The total amount of charge that passes through a wiy ny7hpe*v. 1eiy 68dkre's full cross section at any point per*kd vh.e1yy7y 6 p8eni unit of time is referred to as

  The direction of convention current is taken to bes40mict dl,c2 rt gb:xn( +)jj the direction that

  A coulomb per second is the sarxj+l7 v (zc.17blfp,osx4 tome as

  Car batteries are rated in "amp-hours." This is he-fxu, lxc ;9a measure of their

  The resistance of a rtm,3se8ne7 t jb56iy 71bmql wire is defined as

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

  The resistance of a wilg)o 4; 2ew6,)-bm mjjbvsc2ainp3h dre is

  The resistivity of a wi:(7xvp s:k/ran b:hyt re depends on

  Which conducting materia2:6h5ocb u .qp2ziorm l has the lowest resistivity value?

  Consider two copper wires. 2 *i yzk)pyc3k y-d*gh One has twice the length of the other. How do the resistiviyk y2dg*z3hcpk i*- y)ties of these two wires compare?

  Consider two copper wisls2qs8+.jt 1 bgtk2t b68m zeres. One has twice the length of the other. How do the resistances of these two wires comparsbg 6zsjbs8e 2 q8t2 k.+t1mtle?

  Consider two copper wece1 :;npv wmg-f1ea,ires. One has twice the cross-sectional area of the other. How do teacwmnf :g e vp1-;,e1he resistances of these two wires compare?

  Consider two copper wires. One has twice the length anx ,s5gz kjqjh*s( r:r0d twice the cross-sectional area of the other. rkqx s(gh, j50:sz *jrHow do the resistances of these two wires compare?

  The length of a wire is doubok gzm g7qm 63pu548g 3,eywhbled and the radius is doubled. By what factor does the resistance cho mgy e7k65 m433h zwgp,bu8gqange?

  How much more resistance does a 1.0 cm d7zvm -n7t+ bp arb9l--.* xwni0rhpxjiameter rod have compared to a 2.0 cm diameter rod of the same length la7 hizx-t-x rmj 0wbbn.n7- v9ppr*+and made of the same material?

  The resistivity of most ;*e lt0 v cj.w1f; xgw(svlvr9common metals

  Negative temperature coefficients of resistivit2n ts.v h81 4qlnuzj)sjhe- 9sy

  What is 1 W equivalent toumhhlw pv+ l(()m7fl 8?

  A kilowatt-hour is equ 55oo3-bs:gbbvu m5yvivalent to

  If the resistance in a conog)yeoh (rf*(k/ ow+8 u1x5roc/juky p;d e2i stant voltage circuit is doubled, the power dissipated b1op jh cfe5or /yw2+oyd i8;k*u)k(/ xeurg(o y that circuit will

  If the voltage across a circuit of constant resistance;k4 vbxw efh( :;pg:g.,jtj6f3dxi zh-kb7th is doubled, the power dissipated by thjf:t-i3 v,htz:h j;4bbe(g7 xd.gh fx k k;wp6at circuit will

  If the resistance in a circuit with constant current flowing ic+b/o0ou8 isjs doubled, the power dissip o j+s/8uciob0ated by that circuit will

  If the current flowing through a circxtmdkr7 : 7p5 t0ntmx6uit of constant resistance is doubled, the power dissipated by thap057 t tt7m6xk r:xdnmt circuit will

  During a power demand,(w j u6p-.t zg/ut6mcc the voltage output is reduced by 5.0%. By what percentage is the.tj um z/(gpw6cc 6-ut power on a resistor affected?

  A current that is sinusoidal with r vce7p;oq.rpfj0: n i*espect to time is referred to as

  Consider two copper wires each carrying a current of 3.0 A. One wire h rif31rjv x 2kd2.6a5xm1pqn.w2kg ghas twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to that in the larger diamete2.2 1igm3f26xg1 kphx kwrvanrq5dj.r wire is

  Materials in which the resistivity becomes essentially zero at very low temperatz u8b p/49hyqn5ipsu8ures are refer/q9siphp u58 b8uzny4red to as

  What current is flowing if 0.67 C of charge pass a point i7x -i3a zxyrawvlkq9*3n 9v 7in 0.30 s?

  A charge of 12 C passes through an electroplating apparatulee 5lr5z2f06 j 0fwwr4bosm0s in 2.0 min. What is thew0zrlo6s 54j02 fbm0e lrf 5ew average current?

  How much charge must pass by a point in e2+e*kv euo z: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 flowing i+- oi1y 9wbgiov b04lwam*xm)f $4.0 \times 10^{16} \; electrons$ 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 c;6 5su fc ic06pbyk3kaurrent, has been left on for 10 min. What is the net number of electrons thc5k6b3yipfs c;k 6u0aat have passed through the coffee maker?

  In an electroplating process, it is desired to deposit 8 lm/:umqxs118y zj3 f yg3jnj40 mg of silver on a metal pfsg1yxuj 1n 8ym/3jqm3zj8:l art 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 silver is 108.)

  What potential difference is required to cause 4.0+pa7 wnqp7vxmkfwn3+d3c 2. w 0 A to flow through a resistanvw+pnwqx cw pa3.n +k 27df7m3ce of 330 W?

  What is the voltage across a 5.0-W resistor if xx.rn66e+bc,/n*p1qemw dy d the current through it is 5.0 A?

  A 4000-W resistor is connected acrosvb937udg;n lkpc *vbo-q)e 1 ds 220 V. What current will flow?

  A light bulb operating at 110 V draws 1.40 q0g hyyt5; of;A of current. What is its resistance?thg;y;q 0 oyf5

  A 12-V battery is connected to a 100-W resistor. Ho t xrs8,e11o4sj6zkl9 qa oges, d+o5lw many electrons flow through tslx1s86j4o 5dl g, rqzot eok9sa+1,ehe wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of/b;n5aso;uz-/ra oz r diameter 0.40 inch? (The resistivity of copperroa nosz / b-a;;zu5/r 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, if ru3x1 t7f (rvjthtr u31r(fx j7ve resistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (rep2fp f/mdh(q n+ fl+l1sistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (r)ze:zf3uf/e j h loww0nq5nsg4 c8a+ ,fet(b7esistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, measures3i:12q l j f n1iyj+-f ghrn7nmqlg43r 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius is 0.321 mm) nfu m3 ve xq+c;ez2/mho4yg+t p6(v f0aichrome wire if it is connected to a 12.0-V battery. (The resistivity of af zxm2ohgem/uc+6qf(ev0 p 3 vty;4+ nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cross-section, 1.0 cm x 2.0 cojiba 4*3cn;w6pv k(um.i*o p kn(c43j;wabvu6 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 resistivi ol pv9j;5:6r*mm1qz olbf*edty 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 (resiaegm3h56c3 5uv0ck d10yiyfo qr;x1 ostivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a re5 a5 q +/ ; bunmvhia:i2enfjyz-j;2fosistance 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 plati2qmkpqk..drvnd ,ki6 b )5w v/num 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. The8 qqkp,x xrn dd0x g/-r-.bv(a resistance of the platinubd.x, q/gdr --rx0 k(xq8anpvm 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 thwgupf h9, d gq+aj qq4yp*v1);rough an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer i,l5l/q rpsvvss/t/ ;ss rated at 1200 W. What current will it draw?

  A 150-W light bulb runn 2o+zvw.3oni8odg2(loqv pwvv2 +al 5ing on 110 V draws how much current?

  What is the nominal resistance of a 100-W light b:k(mxy7dvkcttw 1 3 t3ulb designed to be used in a 12 kvc x1twtt yd7mk:3(30-V circuit?

  A toaster is rated 800 W at+6v9f db ukgp( ckn.7t 120 V. What is the resistance of its heating elemenu7d9 +tkk .6pgbv( fnct?

  A 200-W resistor is rated a( ynpoc 8q:8c6a(vpjn-pl u cp.rqh-1t $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is ratv:7d u1x eds 8qh+bz,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 current does it dr zvm a b0whm(hir yk,g/:(v0+daw?

  A lamp uses a 150-W bulb. If it is b--q 4vqzm d6iused at 120 V, what is its resistance?

  A 25-W soldering ironsm 0 r3)nwt zpi:-b8cz)l)aim runs on 110 V. What is its resistance?

  How much does it cost to or nb bslz58pnhw/d 028 3sjev3perate a 25-W soldering iron for 8.0 hours, if energy cos3b3 v8lr s05 dzs/ nhw8ejpb2nts $0.08/kWh?

  How much energy does a 100-W light bulb use ikq: x:ixe.rc odgry + 3ytm1ic6518d jn 8.0 hours?

  A 1500-W heater is connected to a 12gk.4y8dzo j y:0-V line for 2.0 hours. How much heat energy is prodg:zj8 .oyd4 kyuced?

  A battery is rated at 12 V and 160 A-hdnfybv8zr t)30s/ox b:u sk (9. How much energy does the battery store?bszkr:bvn ) 3ft( d0y xo/98us

  How much energy does a 25-W soldering iron use inug2z)ej- mgrdp (c/ s.41hdtd 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming the power comp o yw bxd*sb4eb.r 8w1vqx(n(6any charges 10 cents for eacy ds1q* n4or(b6we.x(xbwb8 v h kilowatt-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitord/j )w j+dc(hf) is turned on 8.0 hours per day. If electricity costs 10 cents per kWh, ho /wc+dhf)jd(j w much does it cost to run the computer annually?

  The monthly (30 days 0m0iasnc2 bd,kvg( m1) electric 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 tbgk 2adnsimv(1m, c0 0he monthly electric bill if electricity costs 8.0 cents per kWh?

  The heating element in an electric drier operates onl- s7ulc fu5v: 240 V and generates heat at the rate of 2.1 kW. The heating elementf: us-5u7llvc 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 the power dissipated in the heating element?

  14 A of current flows td ( wczerh72d1hrough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery cost9o dfl )5dldna* u1k3as $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 wor66 aifl x-rz0ok at the rate of 2.0 hp has 60% efficiency. How much current df -lri6xa oz60oes it draw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rms curren-t -uxm7xms/ht flows through h-7muxms/tx -this device?

  A 500-W device is connected to a 120-V ac power source. What peak current fl 2c i+rxy.6kzoows through this y+ ik6 o.rxc2zdevice?

  A 500-W device is connected to a1 5r:txe7d:;xw w7txxo j ofj2 120-V ac power source. What is the peak voltage across t trj:71xefxo5;oxwtj w 2:x d7his device?

  The diameter of a copper wire isjjw)kkf 4.l w82iuje.lv a:9i 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 vaifje.lj 4kjl 2k8w :)9.ui wvelocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)