A device that produces electricity-od ;pyw38+ty8 mtr-tow0:bdrhnm *v by transforming chemical energy into electrical enerw8 - 3r-v;t 0yyr:ddnowmttp+o h*8bmgy is called a

  A car battery

  The total amount of charge that passes through-ygd5rb9:u w2p*gb :7 kmsqk n a wire's full cross section at any point per unit of time isgku qyr5bg9wb :d7 sn:2-*kpm referred to as

  The direction of convention ck r-os. ruh2:fr3 lywnm4suld1+ 2zv/urrent is taken to be the direction that

  A coulomb per second is the same a7 sofc7(. y2vjwn*xyhyr*s/+z, 8l. qusupyp s

  Car batteries are rated ,wpx(,+f rrohin "amp-hours." This is a measure of their

  The resistance of a wire is defined a4;qlh:ef .exks

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

  The resistance of a wi42w-abhueo ,qokzi -7t6ef 8vre is

  The resistivity of a wire depends ; a um2e5kwuwbz9w *,bfq5da 6ibk3;aon

  Which conducting material has the l5yv:91-plxr(m gdky m oaat*/owest resistivity value?

  Consider two copper wjopt 9.v ..px y1qgxosd5:i2 kires. One has twice the length of the other. How do the resistivities of these two wiresgv:5pj1os2kyq 9xdxo.t.i p. compare?

  Consider two copper wires. One has twice the length of the other. How do:j e zhwykjoqc5-1n c*keb )+4 the resistances of these two nzeb cw *k4 jqe h:o)jkcy+-51wires compare?

  Consider two copper wirbi(*f -lxp 6iw/qkwj6 es. One has twice the cross-sectional area of the other. How do the resistw66jxp/i(w-fl bki *qances of these two wires compare?

  Consider two copper wires. One has twice the length and twice the cross-sectiontn.nj.b yup40 al area of the other. How do the resistances of these. .y4b n0jnupt two wires compare?

  The length of a wire is doubled and the radius is doubled. By whkj*e*p-bwr ) vat factor does the resistanvrj) *bkwpe *-ce change?

  How much more resistance does a 1.0 cm diameter rod have comparedc11 zy u3p:+sn+biyttm 7 -g,mou,hkv to a 2.0 cm diameter rod of the same length and made of,7u+gukzsm 3oy n1-th b ,p:+yivcm1t the same material?

  The resistivity of most common 23h fk*oq*mk .hbtyw/ xk10la metals

  Negative temperature coefficientsyb6 a yb0ai+l6 of resistivity

  What is 1 W equivalent 1 qd:4/ poh0rok zpwga-g8qb1to?

  A kilowatt-hour is equivalf.wzvz;/q* qa9dg(s yqi h 6va48wk :xd d+mz-ent to

  If the resistance in a constawrj2 oa(qc.*u f4)s rcnt voltage circuit is doubled, the power dissipated by tw2cu(o.r fsr 4qc*)ajhat circuit will

  If the voltage across a circuit of.qdf anw-; r zssterk3)26q0 n constant resistance is doubled, the power dissipa-e.)sqszn;6n 2 rf0dtq 3arwkted by that circuit will

  If the resistance in a circuit with constant current flowing is doubled, the popgo dt*zctsd+26x* i;wer dissipated by that ci s*zdxd2 *p; cot6it+grcuit will

  If the current flowing through a circuit of ciqc0 //sln 3dlonstant resistance is doubled, the power dis/c i03l/s nqldsipated by that circuit will

  During a power demand, the voltage output is redus,ji*uq cj3/zced by 5.0%. By what percentage is the powerjjs,i z/c*u3q on a resistor affected?

  A current that is sinusoidal with respect to time ew;( vtjl2t ug-mi)gg8:xe7z/yu7k fis referred to as

  Consider two copper wires each carrying a current of 3.0 A. One wire has twmy,. 9zy079os las otg6 dahz;ice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire 0g7oh6s.m yszayd 9; zota9l,to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially zero at very low temper.ktofmkkt1 r/y/ v +hebp+0)yatures are rpbfk/y+1k t)k m0+/ etrh.vy oeferred to as

  What current is flowing if 0.67 C of charz9by3q.wl,m hi s:i b;ge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating apparatus in 2.0 min. yj2e6s.kd)c zwya,b / zew27u What is the b uz22 ,w/sezy.jyke7a) 6wcdaverage current?

  How much charge must pass:c*rgjo8 ntj (qvzn5 5 -4usqc by a point 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 flowing -hl w mymt6j0*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, has570qx)5 pfcc *u6wo f5xbsaz s6lohh. been left on for 10 min. What i hx6 *f w7.o)xq5hcz05u56b ols spfacs the net number of electrons that have passed through the coffee maker?

  In an electroplating process, it is desired to deposit 40 mn+e)vjxsm )t. g of silver on a metal part by using a current of 2.0 A. How long must the current be al+x mjvt)e )s.nlowed to run to deposit this much silver? (The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential differewx(fyon9xg b+ , a8o; gf83eunnce is required to cause 4.00 A to flow through a resistance ofyagno89 w,gx8( b 3uex;+noff 330 W?

  What is the voltage across a 5.0-W resistor if the current through it isnt hk**.zq y9c 5.0 A?

  A 4000-W resistor is connected across 220 V. What currenthy7osi ku)( b2 will flow?

  A light bulb operating at 110 V drawsgqgx+:g(5 raduoct 8 7 1.40 A of current. What is its resistance?x5cg7gru+qt8a : (do g

  A 12-V battery is connected to a 100-W resistor. How many electrons flow9c+gdqr;/y f bxr.)qefg3e ,c through td e gqq9 efg.;c+rryf),c/x 3bhe wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameted yqt8f((wj4tr 0.40 inch? (The resistivity8jw((4tdfty q of copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular r9yhyarfg3ab v e m59xe )g9b83od 1.0 cm in diameter and 45 m long, if the resistivgrbmx y99g8he3f5a3b)v 9ae yity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resisj nq1kpo(x m n:n/tzmv( pehqd+1r+1)tivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistivitybfm.c:vo1(p:9 r hvgj $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 i hef+.r7 x9jyqsg.hijou-.0 lz ,2bjm long, measures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radiryns7cvb30bexuc974h e tp-5 -b1zbvus is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. (The resistivity of nichrome is9zpht-cuecynvbe7s1 b- 0v47 xb5b 3r $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangum( v+noiu- 9k.qembq:lar cross-section, 1.0 cm x 2.0 cm. What is the ok (.e:m-iq mbnq9 vu+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 oo(.m:p.o hev)t2ngvv81 pzs mf $100 \times 10^{-8} \; \Omega \cdot m$. If the wire carries a current of 0.50 A, what is the voltage across the wire?

  A 1.0-mm diameter copper wire ( -..w,8e2bmbdyw*fiqi6ah okresistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resistance ;x.wyi wv a92/z1 arcbof $18 \Omega$ 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 platinx/, r fybr6i.-r.n cxmd9y2x3ky ukg9um 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 det brexli o3(df3;r9r,sz t/a:aee0gv7 ermine the melting point of indium. The resistance of the plati f:rg0ea3 e atrz7ro/ 3 9e,(v;xdlbsinum 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 throughznnye(u):c:fva1 v(i(plr oo3 90l :n8kv mgh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rad;:k 5 mp0bi wkee0k:jted at 1200 W. What current will it draw?

  A 150-W light bulb running on 110 i hjd;kbfu 04jn6( jb;V draws how much current?

  What is the nominal resistance 1prd g4zivwx s::3ju 8of a 100-W light bulb designed to be used in a 120-V cid :pz:1 wgvxju 3s48irrcuit?

  A toaster is rated 800 W at 120 V. What is the resiste ts .h 4x; .+l-qevoqv6th7awance of its heating elementehe haq. t7;wxv4+- lovsq.6t?

  A 200-W resistor is rax7add 1soo*5kted at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rattd)(v,f f i+r4bjkzt,ed at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at x 8::z q41 mmh*wj1p q7kypgdii+y i4p120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, what is its resisl ntwc,b3beaw :*wl1da :t8u 6;jcn0q tance?

  A 25-W soldering iron runs on 110 sv ue y wi25jgk30,se2V. What is its resistance?

  How much does it cost to operate a 25-W solderingw; ;mxzal3a7dpg9hk4/.k 8zwuniw9 f iron for 8.0 hours, if energy l/w ;89af9wk;a.hu wip ngzmx k37dz4costs $0.08/kWh?

  How much energy does a 100 y/tzz-1cact2a bzd 2-)dl(og-W light bulb use in 8.0 hours?

  A 1500-W heater is connected to a 120pms5*e ymykpyvoa,2u 94a08c-V line for 2.0 hours. How much heat energy se*pa 5 m9m0yo k4pyu8c2avy,is produced?

  A battery is rated at 12 V and 160 A-h. How much energy.shmpo/u,s m e l43 q+sx(liszqz45+n does the battery store?3z +n+,qi sh sm.q zu45llemss/4(pxo

  How much energy does a 25-W soldering iron use in 8.0zrwx;98apc jr31hq. o hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming tn (y)u 1(9- gedtjvarrhe power company charges 10 cents for each kij t-gr(ude)ra1vy (9 nlowatt-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on pgk 3. 6aicii/8.0 hours per day. If electricity costs 10 cents per kWh, how much does it cost to run the kii/ ic.p6g3 acomputer annually?

  The monthly (30 days) electric bill includ q)f. tuf(cazf xad6uzry,345ed 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 contribu.4 ,zux5qz (ct6 fuf3y) frdaate to the cost of the monthly electric bill if electricity costs 8.0 cents per kWh?

  The heating element in an electjv s/v/w5xodn s ynp7e11-dv2 ric drier 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 y7jvp/1d s-x 1onds2 venv5 w/temperature.) What effect will the repair have on the power dissipated in the heating element?

  14 A of current flows bcay0zj hcz f p/t4ker18+b vw8:oy )2through $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs +. sam29zbp5hy pnzv/ $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; q)jbtz (d*em,9 jfvs has 60% efficiency. How much current does it draw from a 120-V line?9 dmtj )qej,z*v b(fs; ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rms curr3uc.luc,o. gm ent flows throug3 gc.u,.l ocmuh this device?

  A 500-W device is connectyv d*i7kmj;; jed to a 120-V ac power source. What peak current flows ykj; ji*dmv;7 through this device?

  A 500-W device is connected to a 120-V ac power source. What is the peak voltayqmt)0ovjrr b4, uybuc8o-:7 gyr4u,o8bm ty:b7jruvo 0q c-) e across this device?

  The diameter of a copper wire is 0.081 inch. The maximum safe current it - umi *thynl -wrq 9hdku:y-14can 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 ofnd 1q4t9w-l- uk :mhr-uyhy*i copper is $8.5 \times 10^{22}$.)