A device that produces electricity xah86g d)pk+k)lw dr-by transforming chemical energy into electrical ew68rhp-+)dxd)lak gk nergy is called a

  A car battery

  The total amount of charge that passes,2bklb8i .grfvsq iy0l,8/ dt through a wire's full cross section at any point per srlyt2d08 b8lq .bkfi ,/ igv,unit of time is referred to as

  The direction of convention3 :vbel6,h dak current is taken to be the direction that

  A coulomb per second is the samea*xo0p5 qqwrbs2t.u0 as

  Car batteries are rated in "amp-hours." This is a measure o4oenf ;-:lupa f their

  The resistance of a wire is defi y6,k rmtil71te6*j6prrbk ;y ned as

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

  The resistance of a ,/7prhgzl3qc -axc:, 6 g/ itlfh1 4zx l+rbdcwire is

  The resistivity of a wire y.i:vduqe8cz3hng f1 -;ao;wdepends on

  Which conducting material has the lowest resistivity value;7 i-i2 vv j,fj.tttidw b,)wd?

  Consider two copper wires. One hg jvtqt gh9/mullx ; ;cy;w g.gv270k:as twice the length of the other. How do the resistivities of thx9cm;: g2gg .jg tlq;kl;7 v/wvht0uyese two wires compare?

  Consider two copper wires. On6p,w(kqmuhho7+ y n,w p .u8afxs* t+se has twice the length of the other. How do the resistances a7ofnqu tp,+h8+* s6,k s(xumh wwpy .of these two wires compare?

  Consider two copper wires. One has twice the cross-sectional area of the othsdt ql:0xtn9( er. How do the resistances of thel (x9:d sttn0qse two wires compare?

  Consider two copper wires. One has twice the len :22zliu +j78vbnbjf ggth and twice the cross-sectional area of the 7jj zl unfg 8b2+2:ibvother. How do the resistances of these two wires compare?

  The length of a wire is doubled and the radius is do da. n 3:yas:iph ocv(do9 pyub*2im17ubled. By what factor does the :iycoh.i37v(a aodd1:n upbp 2*9symresistance change?

  How much more resistance doesmv125 w0te8ddkmtyb :fd9* v l a 1.0 cm diameter rod have compared to a 2.0 cm diameter rodd0k5 fd:*t9 wvm1 by ldt82mev of the same length and made of the same material?

  The resistivity of most comm w2g keqa15gj,on metals

  Negative temperature coefficients 7 k*eb n5 w7ww4yia)ryof resistivity

  What is 1 W equivalex k4 8sf9t qn;*-dvbhint to?

  A kilowatt-hour is equiva.k : 27 g:jvxexn0svkalent to

  If the resistance in a constant voltage circuit is doubled, the powe *bnrtibh6*4 rk2r1o wr dissipated by tt6brn2k *i r1b4hor* what circuit will

  If the voltage across a circuit of constant resistance is doubled, the p,eyea)2aa+i3j s nk+h/ 6maj2hy9lg oower dissipated hn a6akia a2y2hg +sole)+j9/3jmy, eby that circuit will

  If the resistance in a circuit with constant current f 2bwi2syuzh25*l5slspfeh + ( lowing is doubled, the power dissipated buhh5(ls2ip 2sw b* es 2+lfyz5y that circuit will

  If the current flowing through a ciraj)0* x+n gyc vn9k w)iyh(ep7cuit of constant resistance is doubled, the power dissipateen)(yc*) xagvwhyj7+ 0ik np9 d by that circuit will

  During a power demand, the voltage output is redu3--r-8 -kjypx usqn;b dk7xh 9g68u;o rzlrifced by 5.0%. By what percentage is the power on a r-8slbp 9yu8z6;- -xr k fj nqidhurorxg;-7 k3esistor affected?

  A current that is sinu0mwew u-o8c/(,c 7rhe8inx6g(wj1 mzwj 5 pls soidal with respect to time is referred to as

  Consider two copper wires each carrying a current of 7a)u/;r,h;bl z 8jisdmx(kz n3.0 A. One wire has twice thral kz;iu;j,x( dhn/s 7bm )z8e diameter of 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 essentially zero at vi jov d45x)a-aery low temperatures are refx aaovdj 5i)-4erred to as

  What current is flowing if 0.67 C of charge pass a pointvj/d3tn ii0 q5 in 0.30 s?

  A charge of 12 C passes through an electrc5i) dw9/. ; rosflqepl91thy,pl6vt oplating apparatus in 2.0 min. What is the average curr. /9 i1wyp ;6dp tst9l5vrq)ehfolc l,ent?

  How much charge must pass by a z -uc )5ottwc3point 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 flowipi a x3jmpzp3(.v ;qf2ng 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(zi1gu dl gtxd,,y6 )c been left on for 10 min. What is the net number of electrons that have passed through the coffeeg(,d ydlgu z,x6c t)i1 maker?

  In an electroplating process, it is desired to deposit 40 mg of silver oocqii)f no 6:6cqzk 6-n 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? )onf-oc:iqq66 izc 6k(The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference is require a/vy3v(vo1aed to cause 4.00 A to flow through a resistance o1vyev 3(o/ vaaf 330 W?

  What is the voltage across a 5.0-W resistor if the current through it 8hdbq2m ba6z (is 5.0 A?

  A 4000-W resistor is connected across 220 V. What currbgktw 11jc0 /ient will flow?

  A light bulb operating at 110 V draws 1.40 A of currenvzahd2dimxqm6 297 7b (/psq/f-se dyt. What is its resistance(qm hvx7dsy/ sdb6 z2a79-qi/e2 dfpm?

  A 12-V battery is connected to a 100-W resistor. How many electrono6w6ms1f77 5ohahc5kzsakh6 h4e : bk s flow through the wi aho 7a hez1whm46 kks6ks :56h7bc5ofre in
1.0 min?

  What is the resistance of 1.h1qxkico20 zscwj80at znd +upd h5w 8e/ 3,h-0 m copper wire of diameter 0.40 inch? (The resistivity of copper is0u2 jx-cw,qzw+ d8hh/dpzke3i0at c8n5s1oh $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in /m+l 1rp(k8ntgsb i m-n:wp)xosi bx/ r0k1g-diameter and 45 m long, if the resistivityr /8 /+)bp kp-i-liwrn0xks:tbm1xgomsn(g 1 is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire q 0kumkhnu2:ab;,+fn (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 (resistivij5 ) y.z,wv*tv)rigivfw nu:r;c *(jaty $1.68 \times 10^{-8} \; \Omega \cdot m$) 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. What hvu zmw /+nvjga40d 02is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius is 0.321 mm)urxm ux/2 *vl1 nichrome wire if it is connected to a 12.0-V battery. (The resist/* xv ulurxm12ivity 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 cm x ge/iyd-8i1onll1 qc*2.0 cm. What is tiyqg*1 /8dol icl 1en-he 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 ha;a ma+p8v r2ovs 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 (resistivi bkh6u2:2kvk t 1bt7idty $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor hast3he10mimu9 v (cc9bb 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 resistivity of platinum is t:m m s yewv3ts+1okn,-+w*j v$3.9 \times 10^{-3} /^{\circ}C$. 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 meltin c qovg08sze..g point of indium. The resistance of the plac. zs gq8v0o.etinum 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 thrxh6l. ,jxc; fr.kjg w8ough an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. Wkh rohv ..u, 9p(leg1jhat current will it draw?

  A 150-W light bulb running on 110 V draws how much aul* dne-9f. icurrent?

  What is the nominal resistance of a 1 c3 *k,axyzks9noij5 (00-W light bulb designed to be used in a 120-V circuo*zck,j s35xn k9(i ayit?

  A toaster is rated 800 W at 120 V. What is the resistance ofigvz.*ny az.1 its heating element? .v1*gan.zyiz

  A 200-W resistor is rdrjlor u.5g6 -un0.iaated at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is ratehho,.dwyu +c ,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 cud u fg0 9jfmttit,(-*mrrent does it draw?

  A lamp uses a 150-W bulb. If xvajx z+f.t21ea tw ou15ba 7 i04/ujsit is used at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What is its res )n3fy -tkg-tkz j/k, zj(gox2smr))lp:it*uistance?

  How much does it cost 0- gpz *ewvjvu**( udvto operate a 25-W soldering iron for 8.0 hours, if energy cpvze(gu wvd* *j- *0vuosts $0.08/kWh?

  How much energy does a 100-W light bulb use in+h 6 bp5bmlwt 5ws(k,b 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 t) k6ykcczaye8w47jer2 4e4 w hours. How much heat energy 7ka k6 4r jt2cwz)ye8e4ey4 wcis produced?

  A battery is rated at 12 V and 160 A-h. How much energye (gx:qq;widm0a a-j5 does the battery store?jwq-5g(id;: q 0ax eam

  How much energy does a 25-W soldez) fq ;/kn0jd10l jsy5n+edabring iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming the power compank2, w s;31 sb* uzd4fkyeyy8nfgm;u,f y charges 10 cents for each kilowatt-hour of electricity used, estimatezg,y1f ;nyf2;, fsu3ksmyd*k uwbe48 the annual cost to operate the bulb.

  A 400-W computer (comput ,w*jxh yog1pe2 u.+jh/ ep+lder plus monitor) is turned on 8.0 hours per day. If electricity costs 10 cents per kWh, how much does it cost to run the computer +1 .hle*pep/x,jdwg houj +y2annually?

  The monthly (30 days) electric bill indy:3c1 pb..6) w3jnj oqud smad r0m*ocluded 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 p6 3)qwuddm:no* 3y0..ojr1 cd smb ajof the monthly electric bill if electricity costs 8.0 cents per kWh?

  The heating element in an electrvscf9v :wu v0xt6 15ebic drier operates on 240 V and generates heat at the rate of 2.1 kW. The heating element shtxv:6vfs cwu e150b9vorts 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 through d8 k2t iuf10y7v8uz jy$8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs k,8qrfvxz:v m p3-y) s$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 ras. zxh5l3s ukox,) pb5 rd8i2zte of 2.0 hp has 60% efficiency. How much current does it draw from a 120-V line? 35 zubx)old x5sz,2hs.p kri8 ($1 \; hp = 746 \; W$)

  A 500-W device is connecza epkn 750ut:4 mbz-fted to a 120-V ac power source. What rms current flows through this device?e4z t7f5b-nz k mu:0ap

  A 500-W device is connectedv v kk +k)iu;, hw*qk+g-byad*wdub/( to a 120-V ac power source. What peak current flows through this devicey/ kudv(d- qg*kwba*)w; +k u+hikvb,?

  A 500-W device is connected 2aoey/9nob l2ab 3v rn, hjo+5to a 120-V ac power source. What is the peak voltage across thisarol39+2 ynnb ojo b5h2ve/, a device?

  The diameter of a copper wire is 0.081 inch. The maximum b e)t4pde phr+2v8f4 ,pufdk)safe current it can carry (in order to prevent fire danger in building construct+ p4u42d ptfpeke h )8d)rb,vfion) 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 $8.5 \times 10^{22}$.)