A device that produces electricity by transforming chemical energy intolf(ji1n(naat p-z8 ,y+cky 5dxet+u 1 electrica+ntzaic+ ae(l y1uf58tp-k n(j,yx1d l energy is called a

  A car battery

  The total amount of charge that passes through a wire's full cross s 9xf3dc.xvif)u0y;v2o cea x 3ection at any point per unit of time is re0e33doca ci u2xf .yvv9xf;x)ferred to as

  The direction of convention current isrd foe x)6vb /+z;n(rm taken to be the direction that

  A coulomb per second is the sam0d qmb3/ 29by5qbjl xz*v 4nige as

  Car batteries are rated in "amp-hours." This is a measure 2hk5bdu/vo8eof their

  The resistance of a wire ig5- cl,lh6ib+ eg3jmve 2g:o8q jdn(es defined as

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

  The resistance of a wire hn-gm4 vi b2mn3-h943buepfmis

  The resistivity of a wire depe6mlc nyr.iy bf2.pz,:x.d 8ernds on

  Which conducting material has the lowest resis.z8k s++c9;cxx m0owvn la;cqtivity value?

  Consider two copper wires. One has twice the lenh9q;nw5d3nk)ic ym +kgth of the other. How do the resistivities of these 5myd+3 n)qhwc; kkin9 two wires compare?

  Consider two copper wires. One hav-( ccr .tb7oks twice the length of the other. How do the resistances of these two .vt - k(or7bccwires compare?

  Consider two copper wires. One has twice the cross-sectional 2s20u,kzydc,zx6 eo.eefu z)area of the other. How do the rkczd,e.eo, )e 0z6zusyuf22 xesistances of these two wires compare?

  Consider two copper wires. 3wah7 6sldd2m swl v;mp(;x/,o1mmnyOne has twice the length and twice the cross-sectional area of the othes;w vpw27( mm1saol/ xdhm3;m,n yd6l r. How do the resistances of these two wires compare?

  The length of a wire i:rso /re 2c.-p4le c. qr)kqshs doubled and the radius is doubled. By what factor does the resistanceer2c p/ :scrsrq ).eqo -4.lkh change?

  How much more resistance does a 1.0 cm diameter rod hav-yw3bdy jd 1a)e compared to a 2.0 cm diameter rod of the same length and made ofjw)aby 1-3y dd the same material?

  The resistivity of most co h,t-xy7 j)o bx6gwa:i,p l5zammon metals

  Negative temperature coefficients of resistivityflwpw+wc+u+6p jy .r0 p w9xpt2de 90v

  What is 1 W equivalent tm9-.d f uyjq-gp)9e hj xl4(:g-xqpzzo?

  A kilowatt-hour is exjmqoe 00x t8yh38ew )quivalent to

  If the resistance in a constant voltaghzcg1-pu7 - 1 v z;u+0q0ibd+gxbn/ngat2ol he circuit is doubled, the power dissipated by thagpli1ud z2nu zg b-7+ta;+-h/cqxn h gvob001t circuit will

  If the voltage across a circuit of constant resistance is doubled, th1iasp:h21j tu e power dissipated by that circuit t1:isphu21j a will

  If the resistance in a circuit with constant current flowing is doubledk- 8nwjzla(e q7 9fk5y, the power dissipated by thakj z9(yk l5wqf ena87-t circuit will

  If the current flowing through a circuit of constant resistance 7*rjeb 7hmi5mis doubled, the power dissipated by that circuit w7 ebjm7ir*5 hmill

  During a power demand, the voltage output is reduced by 5.0%. By what -vptq j)zmmdrk610o d32dy1e percentage is the power on a resistor affected?e 1t0 ypm6od1vk r-jzmd q32)d

  A current that is sinusoidal with respect to time is r ,:0nv-/fl* ikuy5(omq txo b*wzew3f eferred to as

  Consider two copper wires each carrying a current of 3.0 A. One wire has twicelixsjwr ji5f9-; 1o+l the diameter of thxlo;-sjflj9i1 i r +5we 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 i,0ov,sg km4xzero at very low temperatures are referred to as gmkv04ixo,s,

  What current is flowing if 0.67 C of chargeb- .r2yj r1mak pass a point in 0.30 s?

  A charge of 12 C passes through an electropla1a +.uc *bnhxqting apparatus in 2.0 min. What is the averaac+.h xqnbu1*ge current?

  How much charge must pass by a poinh;bqz spyxqx :n5 (75i/ ky(cst 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 if*qq(j r k33gkg $4.0 \times 10^{16} \; electrons$ 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 s3r uloy;te10ei-i4. m gsuj/left on for 10 min. What is the net number of electrons that have passed through the coffee ma yeml4 ;13s-sg ju/ri.ute 0oiker?

  In an electroplating procej(i8foip4 rnmjlxe u9.+s 31rss, it is desired to deposit 40 mg of silver 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 silver ions are singly charged, and the atomic weip(r+ujij ms e.4 iol3fnr 198xght of silver is 108.)

  What potential difference is required to cause 4.00 A to flow through a redq 17/pxtq,jz sistance ofdp,zxjq/1t 7q 330 W?

  What is the voltage across a 5.0-W-.(c5lj tm nnf resistor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What 1hi6od cv463 8 dc8psdzvx1odcurrent will flow?

  A light bulb operating at 110 V dr8sk4i d2c .xb+uuzzptt.gg27m k*c, yaws 1.40 A of current. What is its resistance?c2.,+cptuikyg .4ku*tb zdg827s z mx

  A 12-V battery is connected to a 100-W resistor. How many el t-yk9hu8jdm,f;sz 1w-j r,byectrons flow through y d;k,s1rhjtum-w8j y ,f9 -zbthe wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? (The resistc:(uweuhc:)r- l cwun-kx(5n ivity of copper:cen uw:r( lxc-h()k 5nu ucw- is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance afse q8wl0*ity w8 8z(iepk72of a circular rod 1.0 cm in diameter and 45 m long, if the resisswe2(t 8eii8pzf l7q w*y0a8 ktivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resistivit tpaf- k*:5a5oup,hfdy $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper m i sv+w6ja*onxh+ p0-ck m)fz-z7e0 bwire (resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 :yy( vc *b0ly1l;nnga 3xd8cx ohms. What is its resistivity?

  Calculate the current through a 10.0-m lopq5 (y))4xv ql/smvn txvt 6j4ng 22 gauge (the radius is 0.321 mm) nichrome wire 5jnvx4v(p4m/ vlts )qyx6)qtif 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 long and of rectblk8( zuezj nv,+x95 mangular cross-section, 1.0 cm x 2.0 cm. What is the voltage zkv, 89jn( xe+zbuml5 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 nichrot8/g mtg7 ,9u *rzvubjme wire 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 (resima a9mt 2; 7gqb u cy8:7b;jwhf8vreo4stivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has aq5l)x6wgmw/dp m 9 mw) 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 obz53a w6wv,tavl 0bdi ,qax4*f 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 determine the melting point of indium. The resistax;y t:fv8sck6nk;f: fef3 na)xm(j-w 1mt4 bunce of the plati u3f 8nm-wxn6mvx)( tct1k f;;bf4yj: k:aesfnum 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:gvtg b5.mv9o3kd n p6 an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current will it drakux7owuf7/ 7 y 2 diei2c)p4waw?

  A 150-W light bulb running on 110 V draws howcu+io- hdq2 0j4zw v(nvr:r)s much current?

  What is the nominal fh/: 5+vszsd q3xc+vxresistance of a 100-W light bulb designed to be used in a 120-V 5qdv+:+hxf/cs vz 3s xcircuit?

  A toaster is rated 80-0c,ujww83jqdy1:j3t f ydkl 0 W at 120 V. What is the resistance of its heating elementq3udl8 :jk dcjfyw 03tw1,y-j?

  A 200-W resistor is rakoqo/4 lo 91w 3zvfh4 jrw*(fzted at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is ra8ohrwv 3zx3/fi: uw*cted at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, whe (:n f4vnulf3at current does it draw?

  A lamp uses a 150-W bulb.nl/)7 i5 miof4e -mrsrs5rv)d If it is used at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 ;)*wojrs6z8c*g irup)c d qh)V. What is its resistance?

  How much does it cost to operate a 25-W s17,4ip,d ayu zau bgh(oldering iron for 8.0 hours, if energy ,d4a izp1hgyu,(abu7costs $0.08/kWh?

  How much energy does a 1t :mnsb/)uwm ,00-W light bulb use in 8.0 hours?

  A 1500-W heater is connected to a 12lt6shi)36r gdce,yzg,o ar090-V line for 2.0 hours. How much heat energyasc ,z6t6ygolrr3 e) dgh 9,0i is produced?

  A battery is rated at 12 V and 160 A-h. How much energy does the bat ejy)cys+jue,0m+. x dtery store?jecsyy+0+,.exum) d j

  How much energy does a 25-W soldering iron use in 8.0 hy4sjy,;w6z z +seia* tours?

  A 100-W driveway light */ m- d8s36 ykrxweff wj qwz4;i;mt pu-h8iy4bulb is on 10 hours per day. Assuming the power company charges 10 cents fp-m;46yz- ekh qjf4*w t/ i;m38rfwsx 8uyidw or each kilowatt-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turneda, s5c1 01ij+no baqj)tob n1k on 8.0 hours per day. If electricity costs 10 cents p)+i, n1cqbat51bojk n j s1ao0er kWh, how much does it cost to run the computer annually?

  The monthly (30 days) 1mmlebo.hh ,:electric bill included the cost of running a central air-co :melh.o1hm,b nditioning 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 costs 8.0 cents per kWh?

  The heating element in an electric driereao/1vb 5ay(u 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 b aa1yv( o/bu5ey 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 thzv:wu z4jr2x2rough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery cost7t dv)dmc7 d730emevns $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 a8s a2xrbn97h pt the rate of 2.0 hp has 60% efficiency. How much currentaxb8 9hrs7np 2 does it draw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac 9widsjfu q+ fjx28h5 z b(4oq,power source. What rms current flows through this devij8qo9bdxf s w+hu,i5(2 4qj fzce?

  A 500-W device is connected to a 120-V ac power q5vf8p b/ )swgr3ojh;source. What peak current flows thr /gqfhw8v ;bjr)o5p s3ough this device?

  A 500-W device is connected to a 120-V ac power source. What is the p x+eu9r+5ayp .nmx7(pa)8o: qsc fi bleak voltagxm c ep qopuayl5b.f+ s9)7inrx8 a+(:e across this device?

  The diameter of a copper wire is 0.081 inch. The maximum safe current itdbgo8 6,m1n ciaixr7. can carry (in order to prevent fire danger in building construction) is 20 A. i18x.c irgn ,7ab6dmoAt this current, what is the drift velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)