A device that produces electricity by trm jewdk4jicq77 )6v7hansforming chemical energy into electrical7dkq 46hmjvwej7 c7i) energy is called a

  A car battery

  The total amount of charge that passes thkb 8ndir jc+3l) (zhuu,vkz.i4m+ r 1jrough a wire's full cross section at any pkjrl 8miviz 1bkr(+dh).3 ,nuc+u zj4oint per unit of time is referred to as

  The direction of convention current is taken to be the direction thatp8st.stn2 wo 9

  A coulomb per second is theam uc1s 4aok h.y*(ua; same as

  Car batteries are rated in "amp-hours." This is a measure ofc*0g.m5ws rt oxgrzy +//(n qq -af9ph their

  The resistance of a -b f;y5zyf ge+u.0c a wef5)qhwire is defined as

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

  The resistance of a wir 2)97lzp eu 4xp4jqusee is

  The resistivity of a wire ij8to1xrz6/lk:fi mxb18 j ; 4 f;i+ saiap(bhdepends on

  Which conducting material has t. -v un/q3qrln )df/*)qca llehe lowest resistivity value?

  Consider two copper wires. One has twice the length of:8v m:euan9mk+0 jw nf the other. How do the resistivities of these two wir9vw m8em a f+n0u:n:kjes compare?

  Consider two copper wires. Onete1mdyf+07t s3pj le) has twice the length of the other. How do the res)me dyet1 sj073tp+fl istances of these two wires compare?

  Consider two copper wirwdjli2 b1dbr+ ly 3).rjdhe ,jj ey*4)es. One has twice the cross-sectional area of the other. How do the resistanjyby.r) l2ri e4w) 3he1j+bld ,*ddjjces of these two wires compare?

  Consider two copper wires. One has twice the length and twice thg+9y )dg hm5cde cross-sectional area of the other. How do the resistances of these two wires codd 9cmy )+g5ghmpare?

  The length of a wire is dwke 4pbxg3lx4w4 m9c ,oubled and the radius is doubled. By what factor does txwek cbwl44mp34 9xg, he resistance change?

  How much more resistance does a 1.0 cm diameter rod havlra.,6o5gbbc hs+kh3e compared to a 2.0 cm diameter rod of the same length and ma .h bl3shob5ka6 +,gcrde of the same material?

  The resistivity of most commo rnfrk a(74;dun metals

  Negative temperature coefficients of resistivix1 gp6,6p+-v dq,pi3tgyoek a ty

  What is 1 W equivalent to. qjix.0 0noch?

  A kilowatt-hour is equi5j86 u77c qxnd kegdv2valent to

  If the resistance in a constant vol hs)v .ntd4v 1xlnxa3:tage circuit is doubled, the power dissipated by that circuit wih.x )3 nad:vvt4lnsx1ll

  If the voltage across ri4. (9-rl-skg9 sjfkoivdf8 a circuit of constant resistance is doubled, the power dissipated by that circuiojgvrsfk -4l d.r8-k9 is( 9fit will

  If the resistance in a circuit with constant current flowing is doubled, the powutmc5/ 6t(fzm 69cdye er dissipated by that circuit wzm yf6ctet65 c9/(mu dill

  If the current flowing throhgqd/(s8lr*g rq+e arl 496h,tm li 8augh a circuit of constant resistance is doubled, the power dissipated by tgra tqdm64h /eg*l9a,+ll i8rhsr( 8qhat circuit will

  During a power demand, the voltage output is reduced by2c2.:d lkk oxn k+r)gp 5.0%. By what percentage is the porxl 2. + gcdknkp2:o)kwer on a resistor affected?

  A current that is sinusoidal with yri my.sh8 - 6-x3wqke8wfcf -respect to time is referred to as

  Consider two copper wires each carrying a current of 3.0 A. One wire hasu p:crv6*bouz h9- 5rs twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to that in therb5rc:z9h-ovu *6 pus larger diameter wire is

  Materials in which the resistivity becomes esswvdy.7 ( n+mhyylwtx;n)t)6e entially zero at very low temperatures arm(dl)n ;. x6 t)7yhewny+wyvte referred to as

  What current is flowing if 0.67 C of charge pass a point in 0.30 slabmaag(;9hy2; )tpg ?

  A charge of 12 C passes through an electroplatm j.1q(f bm-r1zoa n2s55ojvqm a6g(bing apparatus in 2.0 min. What is the average current?nv(gb(-q mj1 s rjo65oqza51 mm.b af2

  How much charge must pass by r(l s32s:2nu/t* nfna;iy oa ra 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 i;eptn3 ;-3cw:(qxn3 l nzjdkkf $4.0 \times 10^{16} \; electrons$ 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 been left y1iq ;15bv(r,rg6oc cmf fe;x on for 10 min. What is the net number of electrons th yc or, rm;f;511(6cvgxbi fqeat have passed through the coffee maker?

  In an electroplating pr ,6s :vfvi-a .cxjuz1locess, it is desired to deposit 40 mg of silver on a metal part by using a current of 2.0 sifax v,z:v1.jl 6cu-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 4.00 A to flow througk ,-cswil 9xppya 4b:+d*w)jlh a resistance of 330i l*k)xbd9scw+,4w- p:ljpay W?

  What is the voltage across a 5.0-W resistor i 4gn4g1m povkhu9x;e-f the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What cudr/5 obk lj;c +)vqvq7rrent will flow?

  A light bulb operating at 110 V draws 1.40 A ofmp z,uo: 8u-qy( rue 4(eipy/425)lcjekypfw current. What is its resistance? uel2(piyrez:m-p j)5ywpe(4cu uk4 fo/8, qy

  A 12-V battery is connected to mmbga+ f09/w:hcpl2zt .x4coa 100-W resistor. How many electrons flow through9ax ghz.wcm/mtb0 4 l+c2:of p the wire in
1.0 min?

  What is the resistance of 1.0 m copperdl *s7*z:j t-rl frh5m wire of diameter 0.40 inch? (The resistivityl*zr tmshl7d5f:* jr- of copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance ne o,a0kyb+( qof a circular rod 1.0 cm in diameter and 45 m long, if the resistivity is ,qb 0ao+y(k en$1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper-ba+prucr; fm5p l n7 rlo97d5 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 (resistivido;n. )aj8hm ;.au dzzbe-r *pty $1.68 \times 10^{-8} \; \Omega \cdot m$) 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. Wn8p0kr-t r hk;be w y.f))wr:zhat is its resistivity?

  Calculate the current through a 10.0-m long 22 gaugem3xzlz pup8wcr t0li 1.7 j5q5 (the radius is 0.321 mm) nichromrtup0jlz8wlp5 c13qz 5.xi m 7e 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 fy-enp) f82 aius/o9elong and of rectangular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 40e9po8- f2)ns u/iae yf00 A? (The resistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire has a 4of3*5 bk nqkk*rz qx,xmc4) qq0o:e jradius 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 (ix7t8jbx2 m v85;ur 8wdjwf)hresistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has wmtjr;quj6bae6:c /0 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 +kifs)b0d4) o r r6ejfof resistivity 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 determi)ltpsbzvx/e; (n9eh(6pz+ 9 z obx q x(cs-x*ene the melting point of indium. The resistance of the platinum ovxn (sze(xb+ 9tq;/czb l6px-epxe h9 *s(z)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 throughs -;xhld;j/ia an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rnyq-((uxe (py 3, way*sjva-vated at 1200 W. What current will it draw?

  A 150-W light bulb rjac )2ae,55g1am 8 t0qchbpf tunning on 110 V draws how much current?

  What is the nominal resistance of a 100-W light bulb desig+z,(*t+boe c l6 xf:brez ng4q+r+zbaned to be used in a 120-fzl4n+zg bt,ozr+be +:xq (+crbe 6a*V circuit?

  A toaster is rated 800 W at 120 V. What lfb8a 3ug( -llis the resistance of its heating element?3f(glblu 8a l-

  A 200-W resistor is rated atu-o95xxhozg++b lcd g3e 4vy/:z i8 ui $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rateudc)q :3c.jw4+n b f4v1gwzcrd at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what current5olftd -+x.hw does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, what is its regq nh :pf3 us79idv6a2w c9o9bsistance?

  A 25-W soldering iron runs on 110 V. Wx2)2ag(wl-scuf 1* i1rz ijalhat is its resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0 hours, if energb::gi2vb iau. /-e/jf(drxy sy costs:2x va/:.(beyisf-brd /gjiu $0.08/kWh?

  How much energy does a 100-W *gotn*v7uv j9 light bulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V line foryumd- e g 3/g 6o;y4ps77rxcbo 2.0 hours. How much heat energy is p4exrb yp; /ydocg67g 7sou3 -mroduced?

  A battery is rated at 12 V and 160 A-h. How much energy does the batteryni s.bklmm(g)rk(5 f8i s-( ax store?k-)5fn( r.si xa8m(ms(i bkgl

  How much energy does a 25-W soldering irojh0 w:qk j n(/pr5+*gi tdl2nmn use in 8.0 hours?

  A 100-W driveway light bulb r1ep49 ezro ;gis on 10 hours per day. Assuming the power company charges 10 cents for ea9r g4p;eoe 1zrch kilowatt-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours per day. 4rfka.3nb 0exIf electricity costs 10 cents per kWh, how much does it conbk 30ar4.fxest to run the computer annually?

  The monthly (30 days) electric billy, iiy21lq-v1 2-dm1v2zxkr) smws qc 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 contribl)cqy , mvy- vk2im212srq1-zix d1swute to the cost of the monthly electric bill if electricity costs 8.0 cents per kWh?

  The heating element in an electric drier operates on 24 ztsou5ima,u1 1:eeb)0 V and generates heat at the rate of 2.1 kW. The heating element shorts out and, in repairing it, the 5bem o1za,)usu et: i1owner 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 througqk)lzx- /i9 jmym:)wvh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs -)y9,:o/x ao6;nk hmzv, kjil5 svrx j$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 thekxs , 40:aj(cxx1bu* +vgr rsu rate of 2.0 hp has 60% efficiency. How much current does it draw from a 120-V line? ,ug 0 xc1bxx sv4j+rru:*ks(a($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120nori +y 0m,rjrf2w .l.-V ac power source. What rms current flows through this devifowr, . m j+y.ril02nrce?

  A 500-W device is connected to a 120-V ac power -mbc0kf( t rc(source. What peak current flows tb0kt cf(-(rcm hrough this device?

  A 500-W device is connected to a 120-V ac power source. What is the peakni8 zngp x0q:/ voltage across tn0inp8 /xzq g:his device?

  The diameter of a copper wire is 0.081 inch. The maxska-ql*1i:(bi3+cw :2;d wu .mt cu cxczr,orimum safe current it can carry (in order to prevent fire danger in building construct3 mc2.siiwt aruzc1:- ocx*+u(q :cd;bwkr,l ion) 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 $8.5 \times 10^{22}$.)