A device that produces electuu2t6 ofi )n1sr66u th5vyja. ricity by transforming chemical energy into electrical energy is caviju ua6t21 fy6o5r nus ht).6lled a

  A car battery

  The total amount of charge that passes throughxqa0p j+* chht0-p :bp a wire's full cross section at any point per unit of *x-p+h0p0ch:t q pa jbtime is referred to as

  The direction of conqq pe-c5 )5 l9li+k hab (ehlp-,fi2j1rn9 irrvention current is taken to be the direction that

  A coulomb per second is twun/ax8 f2 w n57z nwqe)/5.go. cbexihe same as

  Car batteries are ratebw.q4y sqy)/ ug/pd5id in "amp-hours." This is a measure of their

  The resistance of a wire is d3:3 pz(skqm d4eq+-llqj fxm6rte +;qefined as

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

  The resistance of a wire o0a.pz* ,y8up qqq)2nhli l0 ois

  The resistivity of a wire depends*y3* kt4psq7cgt;yotm5h 7 *qnra(y l on

  Which conducting material hadl q m,)lg)- cv)rplj:s the lowest resistivity value?

  Consider two copper wires. One has twice the length of the other. How do q7wu l/b -i2s 1uyyr9athe resistivities of thesu-yu7 r/ql9sya1wi b 2e two wires compare?

  Consider two copper wires. One has twice t) , mfmeh* ahp3:/j2jwpk1afn he length of the other. How do the resistances of these tw3hpmn:ej ha*pf1m fj2 /)w,kao wires compare?

  Consider two copper wires. One has twice the c;w4u/c ap) 8 dyqlczgw03h8 clross-sectional area of the other. How do the resistances of these two wires h)c3wccpgwz84qal0/u 8dl;y compare?

  Consider two copper wires. One has twxth4u4fcgk1, x0d5vc ice the length and twice the cross-sectional area of the other. How do the resistances of these two wires dc vh44 xgu015,kxt fccompare?

  The length of a wire is doubled and the radius is doubled. By what fact 2vd2q4eo4 mheor does the resistance changee2vo4emhq2 d4?

  How much more resistance does a 1.0 cm diameter rod have compae., ry sar/6ncred to a 2.0 cm diameter rod of the same length 6,nrarsc .ey/and made of the same material?

  The resistivity of most commontv.e(ma */l-npc3l7/ kdk 9olzg u9he metals

  Negative temperature coefficientxt(9 i el+1b1j pohm6s00pocds of resistivity

  What is 1 W equivalev:7f:q:o3 a7f vbura ; g;as elh0pkk:nt to?

  A kilowatt-hour is equivalent tna+m *e.bwr )do

  If the resistance in a constant vo kc57mvrb3gkw/ vc)ux)/ z: loltage circuit is doubled, the power dissipated by to)gvkuz/rl5 kb)cm /: vxw7c 3hat circuit will

  If the voltage across a circuit of constant resistance is doublslqpn al2.pt (th 6b2)ed, the power dissipated by that h (nlt.tp2s6 bpaql2) circuit will

  If the resistance in a ci dld1n nhgqyd ((6bqn8mr,8:z:x xa0 drcuit with constant current flowing is doubled, the power dis x d :dmqganr z0:d1qnd(b8h, 8y(nx6lsipated by that circuit will

  If the current flowing througtods2+(: f8)4nfrh u r0bl1z/hwbnes h a circuit of constant resistance is doubled, the pons/ : se)(1d+zlhbnrb th f2or08w 4fuwer dissipated by that circuit will

  During a power demand, tyr, qp5 hdg;(mhe voltage output is reduced by 5.0%. By what percentage is the power on a resmd 5,g yq;h(pristor affected?

  A current that is sinusoidal with respect to time is 28i wak,s;8nmfbka9 ghx- +l breferred to as

  Consider two copper wires each carrying a current ofa kmxwcak 1w*2: ge)mo)ii2/ x 3.0 A. One wire has twice the diameter ofawi):wx) aok m*1 k2xei gcm2/ the other. The ratio of the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essenti zp9 -fnw2kgz8ally zero at very low temperatures are referred 9ngfk p2z -8zwto as

  What current is flowing if 0.67 C of charge c0 e2o z 8s+iv.j*nbex;qiptr/cz 0 ,bpass a point in 0.30 s?

  A charge of 12 C passes through an electrzjzrir2t*g+2k l 1n -aoplating apparatus in 2.0 min. What is the avnz i aj r2trz2l1*-+kgerage current?

  How much charge must pass by a point in 10 s for the current 41vy 3tn(omw p9e(q7b ,eeookto 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*p/p/nw2jbb a 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 beenpe0 .xcuj*p:a left on for 10 min. What is the net number of electrons that havjc:ap0 x.*epu e passed through the coffee maker?

  In an electroplating process, it is desired to deposit 40 mg of unv8lh-a;/ 8vufr0f q; 1 hsyzsilver 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 sinh s 1;y af8f8uu /hrvl;z-0vqlver ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference is required to cause 4.00 A to flow through a7 66d2ytqjbwtw r, 6nd resistance of 27rj66dt,ywwtbq 6n d 330 W?

  What is the voltage across a 5.0-W resistor if the current ax*s9zdg+ 7vehc(06.p*g+d7 b6emt svv xwjg through it is 5.0 A?

  A 4000-W resistor is connet7tkr 7)p;w pvcted across 220 V. What current will flow?

  A light bulb operating at 110 V draws 1.40 A of current. What is its resistan;cp0 0xcw+dnw ce?n;cw d+0 wx0cp

  A 12-V battery is connected to a 100-W resistor. How many electrons flow thrnyx4c tsr8w15ahi9 0g ough the wix5n w0gthsyra i4981cre in
1.0 min?

  What is the resistance of 1.0e*k*z/azjf*liu uq).wc+9 u b m copper wire of diameter 0.40 inch? (The resistivity of +*iewuauqb9k z*/c.jf l)u* zcopper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance nc 7;w wyp*bc9of a circular rod 1.0 cm in diameter and 45 m long, if the resistivity c 9p;7w*yw cbnis $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper r7k 7yl:si5uccz3*gd3eb: ql 2q usc;wire (resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (t tm 0s(p/vf9tu6r+hgofv: s-q4l ;skresistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m lokv sz d*xh7 4u2oxws,5ng, measures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radp0xt 0)r yf(6wrn4kdj6zn,vp ius is 0.321 mm) ni dn ry0p6) (xn64zf,jvk0wtrpchrome wire if it 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 lopeq (q0u fr d+g/fo;zd z264qxng and of rectangular cross-section, 1.0 cm x 2.0 cm. Wha;rd qe(zffu/2 +xdqzo4 qg 6p0t 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 wirecfnewu2xi zk7l:rv 7 f 1/)yg, has 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 (resistx y y)+gn3b.sy34a npu8bvb*pivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resis u go2ye51:cvl i23ta1s82bt oega +oetance 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 plat iu6oi e5x(lt r*0dxrhxnn1g1/a 6m)xinum 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. The0ny osvboz6y zqvk:or85xr5 375 yrb. resistance of the platinum wire :o srrnykqbbox.r7vy 6 z0zo555y v8 3is $2.000 \; \Omega$ 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 twmpmydj8tcfy:8mh0m 2y )6t7p. ml1 $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is ,*3 qxgbq9 1+q06btmb p7s z6tbrovgorated at 1200 W. What current will it draw?

  A 150-W light bulb running on 110 V draws how mu +.tuor .2xdldch current?

  What is the nominal resistance of a 100-W light bulb designed to be used in i,lo8 qlb8k2z* )pd b-t y(vfpa 120-V circu2ltlv (z dpbf) *oby-8pikq,8it?

  A toaster is rated 800 W at 120 V. What is the resistance of i r -4z z tdn45e2eg7nl :ikcl.u2nhnw/ts heating element d247 .keznr4ne2nhln:-wu/i5 tcglz ?

  A 200-W resistor is rated at k)nel0q)tgd - ma- afsd4w*d.$1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is r8;6(rrt 7vgccszay v,ated at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 Vl imd gf;n*ap;99ftm 6( )kmeo, what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120mu1a cscg qs otcr/bu51f8z 8 f0:my8 bs/1f+j V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What is its resistance?r5 q9kyy;l:cm

  How much does it cost to operate a 25-W soldering iron fii2m0 .bihv.i m/t5w wor 8.0 hours, if energy costsi..h5w/0i2mvi mibtw $0.08/kWh?

  How much energy does a 10o;bj2gsox3: w 0-W light bulb use in 8.0 hours?

  A 1500-W heater is connected to a 1z(y4xx svvwhl y1,( l:20-V line for 2.0 hours. How much heat energy is produ w4s,lzy1v(l( x:xyvh ced?

  A battery is rated at 12 V acx 50 4qgs-.eb1/ 9weebopgg33 qtcccnd 160 A-h. How much energy does the battery store? 4p-93ggeq bwocc.1e3 5qgxe /bst0cc

  How much energy does a 25-Wq.-s/spru9iv7x1 k,cqv.f d wk vg1o- soldering iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Ass ;//yj(,neaa l:y 6blyhu;kkfuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost to operate theye,k6j :(al;ln ;y/abuyh/kf bulb.

  A 400-W computer (computer plus monitor:mg0q mq 2q.x7nwm3gs ,dptv-) is turned on 8.0 hours per day. If electricity costs 10 cents per kWh, how much wnmdxv 2 qsqm. 03 gq:,gm-7ptdoes it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of running a centralr t8;* jz1cnh7 q*tjiwf-db,r 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 the monthly electric bill if electricity 8tb*t w;r1-rjqnizjd,hf7*ccosts 8.0 cents per kWh?

  The heating element in an electric drier operates on:i7 ol2:6vi ckfy cqw) 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 the power dissipated in the heating element l 6vfci27w kc):q:oyi?

  14 A of current flows through9f gqlek+)y 9g $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costss+5k nd4ims )7jqe-o t $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%*-7u d.p gtast efficiency. How much current does it draw frtst7p*a.du g-om a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 1661hb)ja5u a x+eief cb1t8cf 20-V ac power source. What rms current flows through this de1b a6h8e 5icb)xfjeafu+ 1tc 6vice?

  A 500-W device is connected to a 120-V ac power source. Whbwua* (fexy /4at peak current flows through this device?w/yf(*b a ux4e

  A 500-W device is connected to a 120-V ac power source. What is7h):f 6wonr3 ui dvm)d/h8sw s the peak voltage across this dev 76oufm h d38/w)s) rs:nwdvihice?

  The diameter of a copper wire is 0.0810;a8 ci bddhg1 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 0bhai; c1dg8ddrift velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)