A device that produces electricity by transforming chemical energy into ezx s hh)m)q)t;lectrical energy xz))thh;)sqmis called a

  A car battery

  The total amount of charge that passes through a wire's full cross segtv;c++x*d3btvt5 rd5.7ytj * ygejpction at any pty5ct3;brdvt+jxy *v*tgj7. eg+dp5 oint per unit of time is referred to as

  The direction of convention curre9sxhgq a8;m,b mefels,)f9 9q)sx 3p;z6pujd nt is taken to be the direction that

  A coulomb per second is the same aqk).h5yq hu 2skr ap7xj.ag1 7s

  Car batteries are rated in "amp-hours.4ry w+(uxs9 vq" This is a measure of their

  The resistance of a wire is define )mvl) fi j/g(+bzg:qxd as

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

  The resistance of a wire ishos ps1c9x:7j

  The resistivity of a wire depepbf0y/g6,9f oi6rdsx qj; vi9nds on

  Which conducting material has the lowest resistivity value? g 5h 7h/3kk*lv:; r sfmrp.fjwdu+tn8

  Consider two copper wires. One h- : 6bap ij6tmru,(rukas twice the length of the other. How do the resrpi-:tka m,6 rju(ub6 istivities of these two wires compare?

  Consider two copper wires. One has twice the length of the other. How do they2 w4zgil+s.z tvf- *fcc:m 3q resistances of these two wir3 s*z+wfv.mly2 ftqcg4 c i:z-es compare?

  Consider two copper wx)chm 8-nz9e s g xhnlh p-6(iu;j/o3xires. One has twice the cross-sectional area of the other. How do the resistances of these two wire xhj xpzxgh-(cm8oisn n9e)-6/l 3; hus compare?

  Consider two copper wires. One has twig -f8woy 5d,tbce the length and twice the cross-sectional area of the other. How do the resistances 5-b 8odf wyt,gof these two wires compare?

  The length of a wire is doubled 5q56i: ru3fs1w5vbtp csru(pand the radius is doubled. By what factor does the resistance chaurwr1b(56c5ptvq3us :s f5 ipnge?

  How much more resistance does a 1.0 cm diameter b-2n,f oz5ny3dd6n6e 4ct xwzrod have compared to a 2.0 cm diameter rod of the same length and m4 tz,2dw 6 zn eod36-cn5xybfnade of the same material?

  The resistivity of most common/ mjs6tkh)l qr6k 9wz+irg2 kkr ,b/*i metals

  Negative temperature coefficients of resist3x5v-o w 2t/ tiff p3 xpouzjqh.62ng1ivity

  What is 1 W equivalent toez,*5 wl bi 0c2m+: lf r9zmc2ixqswc*?

  A kilowatt-hour is equivalentz( cya:2 rb2j5aus7p n to

  If the resistance in a constant voltage circuit is doubwped)c2lf6 nm 8y(u* bled, the power dissipated by that circu(6 endybfu*)lp wm8 c2it will

  If the voltage across a circuit of constant resistance is doubleji -x;bu0t*diw ep u49d, the power dissipated by that circuit wil0bjt-;w9ii e ud4x u*pl

  If the resistance in a circuit with constane1 (/6zu ykxdxt current flowing is doubled, the power dissi1uzy 6k/ xx(edpated by that circuit will

  If the current flowing thr ;;96w8e8chl(ecxqj9mbqx 0ev t /btcough a circuit of constant resistance is doubled, the power dissipated by t mcqe0x(ev/8l8;wte c96 h9xtc;q bbj hat circuit will

  During a power demand, the voltage output is reduced by 5.0%. By what percend /k 1)u-6,)a xvtw eejd7xmcltage is the powcwd av-kex6 )l1j e7)mut, dx/er on a resistor affected?

  A current that is sinusoidal with respect to time is referrytgdyw *+clz8x e2q9,ed to as

  Consider two copper wires each carrying a current of 3.0 A.zyzd y3o 3a o3cj;e3u6 m9cne0 One wire has twice the diameter of the other. The ratio of the drift velocity 3n0cdej3 3zm3ya96ozcuy;e o in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially zero at very low temper*lb)di,izyxe: 9a/e j atures are reflj): b aie,z9d* xeiy/erred to as

  What current is flowing if 0.67 C of charge pass a p -n:bl:zy,ywosay -e,oint in 0.30 s?

  A charge of 12 C pas:+ sdw w(0cuslwcir,/ ses through an electroplating apparatus in 2.0 min. What is thei+ d 0ucwr cs/swl,w:( average current?

  How much charge must pass by a point in 10 s for the curr:7qoikf4iu+6w *knapent 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 if.-,gra vbw td0 $4.0 \times 10^{16} \; electrons$ 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 zz fekj ;iepmb01v2f3d:mi51 wf;3 ruA of current, has been left on for 10 min. What is the net number of electrons tkz1f;r f3j m: evep d wu3m10fbi;5z2ihat have passed through the coffee maker?

  In an electroplating process, it is dvhcyfpf1a3 42esired to deposit 40 mg of silver on a metal part by using a current of 2.0 A. How long must the current be all1f2 vh f4apy3cowed to run to deposit this much silver? (The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential differ;0n)8mqdlhs5 66o fm;,kws soey ,bjkence is required to cause 4.00 A to flow through a resistance of 3mmfbloknsk,s;j5 e )86;ys6, wodhq030 W?

  What is the voltage across a 5.0-W resistor if the curul7 , i)8hsb3smicdp 9rent through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What current wiw 4i*mk-1 mvvfll flow?

  A light bulb operating at 110 V draws 1.40 A of q0oo5 f(3soyvcurrent. What is its resistance?o o(5ysvof3q0

  A 12-V battery is connected to a 100-W resistor. How-w z/(tya t9kpbhj6i9 many electrons flow through the wire ihaj6(y 9 wzb i9t/k-tpn
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? (The resi(bskx9axyw 1z )qwl 5*stivity of copper )lxxy5 sbaww*( 9q1kzis $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diameter and 45 m long)afyr+gx m gc1m 2 uh:98uv5cj, if the resistivccf2yu1 9)jvrhma:5+g 8xmguity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (zp3*l x,zzu/ xresistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistivity mq5blq5) /xycxr en2+$1.68 \times 10^{-8} \; \Omega \cdot m$) 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. + 1afxdew7ph2 What is its resistivity?

  Calculate the current through a 10.0-m lonwclczcs +4 2k49yxz(gg 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. (The9( 4czg4 cws2zcykx +l resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cro *3j w),pp(lloo;9oov0 zigeoss-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (The resist3 v,)0 l*(lpoo9; ozpgiwjoo eivity 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 an9ug/k3t3ac8( gi ggzi d 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 coogyba1s pguk3 63ab8 cc4le 53pper wire (resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor hajq i,0/i.w l quqcyam,((j g)ys a resistance 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 resistivitya (q1fc : mh(eo3nvok8 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 5w- z:25 5hcio ntvjtfmelting point of indium. The resistance of -n5hwoi 2jzctt5:f5v the 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 age+8m m)hkqs)n $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current will w 6nq9erma4 -f4o ih(fit draw?

  A 150-W light bulb running o i817n++udg yz jxuod;eyj;m4n 110 V draws how much current?

  What is the nominal resistance of a 100-W lightzk99x-+k-u ki5z wxxf bulb designed to be used in a 12x 9 xukkf9zz-w5xk-+i 0-V circuit?

  A toaster is rated 800 W at 120 V. Whah, t3f3h (f -bcblmu5at is the resistance of its heating element?l 5bt hffb3h-3m,(acu

  A 200-W resistor is rateibu34uun1l0eb pi , e)d at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated jm:hj/n+p7h n.mta+ 6j 1 h3urd 7snkbat $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, whan.yrbeh) +r9 qt current does it draw?

  A lamp uses a 150-W bulb. If it i 4,flv sun zsqsq+t5*0s used at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110* g 3r(s4rtlbij z7kp7ho +z;s V. What is its resistance?

  How much does it cost to operate h1v zfvs no,3q3 sch7je,fn5h3k +zv9a 25-W soldering iron for 8.0 hours, if energy costs nzhh+e3,cvk,5ofsh9 17z3vj vs3 nf q$0.08/kWh?

  How much energy does a 100-W light bulb 9q6fazu+: upt use in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How much heat.v 6 qndtfk91iuxo*k ( energy is produk1vqoi. *fk 9ntd (x6uced?

  A battery is rated at 12 V and 16 rihthl5h3qj9zu(dg d1- rw6h70 ,qvu0 A-h. How much energy does the battery store? t0v5z hj1hq- uhd (63,gurqdwh7rl9i

  How much energy does a 25-9nlx4 1)ob.:v ,fpkh pnc uf0vW soldering iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming tr f.kh h*3b4 .zm2 eanv8k8jzthe power company charges 10 cents for each kilowatt-hour of electricity used, estimate the annual coz*8 . rvj2afh.mk kn 3ht4b8ezst to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours per day. If elen.tl2/ bhvd:d 72ws ebctricity costs 10 cents per kWh, how much does it cost7b/e 2d:2w.sn b dhtlv to run the computer annually?

  The monthly (30 days) electric bill included the cost of runlvly()) jodwb tf:g 2o)7r.afning a central air-conditioning unit for 2.0 hr/day at 50002)) .argy:l)l tdbfovwfo( j7 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 costs 8.0 cents per kWh?

  The heating element in an electric dric jn8x6w1a :sner operates on 240 V and generates heat at n61 :8wjs axcnthe 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?

  14 A of current flowk2xksj- k5v8ud5c mk1 s through $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costtkc6t79h ;csqft-p*fs $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 raqgz7b 4kj0n4ite of 2.0 hp has 60% efficiency. How much current does it draw f4nbi4k z7qg j0rom a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac p:a8, r4ij lakdower source. What rms current flows through this d8j,ad:4i al rkevice?

  A 500-W device is connected to a 120-V ac pz5l5dmd0,6 -ni( zcte vdgp7 yyg7l 8cower source. What peak current flows threy0d 5dz8 pi,t6zc7ngd llgcv 5ym7-( ough this device?

  A 500-W device is connected to a 120-V ac power source. What is the peak dqhf(i2x )-xw voltage -2xfwq)(h dixacross this device?

  The diameter of a copper wire is 0.081 inchbw/;-t:x-5 qnfvxkfq . 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 velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper i/wv - fnx -:kqtxb;5fqs $8.5 \times 10^{22}$.)