A device that produces electricity by transforming chy 7v+pwpzgo wpjaj 26f *6v0:iemical energy into electrical pg:z iopwv6a p7+ 6jwfjv0y*2energy is called a

  A car battery

  The total amount of charge that passes through a wire's e 1su+y-yf7b 5m btvc,full cross section at any point per unit of time is referred to7 t5u+mb yfcbes-v,y1 as

  The direction of convention current is taken k*ec -u6ile d-7xpkrf,dro8, to be the direction that

  A coulomb per second is thea m005a7kot5g 1obu )pe.+tqyviq2gy same as

  Car batteries are rated in "amp-hours." This is a measure of ther+)kj8 wqjdsxc 3ci,/ir

  The resistance of a wire is defined a27i o1goq. yurs

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

  The resistance of a wireu8t xz4bb +gl)v/8 soh is

  The resistivity of a wire depeootdrkh. ;rh33 k x*7 ot0u/bbnds on

  Which conducting material has the lowest xxstzh pp6++pbme o7(fo )z)3resistivity value?

  Consider two copper wiresh3 bl -nx4l1fvdyf*e5. One has twice the length of the other. How do the resisd* bf eh nx453vl-lfy1tivities of these two wires compare?

  Consider two copper wires. One has twice the length of the other. ogqf 5)a;hrg7 How do the rfa 7)h ggr5;qoesistances of these two wires compare?

  Consider two copper wires. One has twice the cross-sectional area of th0v.qfq-q a5jl8p:s k be other. How do the resistances of these two wireq-lbqkq8 a0jfpv: 5s .s compare?

  Consider two copper wires. One has twice the length and suo*sp uim5jb 44h3 2mtwice the cross-sectional area of the other. How do the resistances of these two wires c 434is52s*hpmj ubu omompare?

  The length of a wire is doubled9/my qup ga.llg4h7,o and the radius is doubled. By what factor does the resistan lh /.7l,yq4gmgao9up ce change?

  How much more resistance does a 1.0 cm diameter rod have compared xau rdq/v09 -gjtub60j;g+n hto a 2.0 cm diameter rod of the same length and made of the samex;+uarn9b0q/h j0vj g-gutd6 material?

  The resistivity of most c)3vy vp: suud) hn+w0ohx43hsommon metals

  Negative temperature coefficients of resistivitlug yr 0z5*vi+y

  What is 1 W equivalenti;ze3gyujzh( ayw+vi *g2z 94 to?

  A kilowatt-hour is equivazg 6 q2slby*g3 zfe,)hlent to

  If the resistance in a constant voltage circuit is doubled, thu; i0czbged*wp j /4ht( o:gf)e power dissipated by that circuiti ;bz ggw(u4/o: ht0e j)c*fdp will

  If the voltage across a circuit of constant resistance is doubled, the powx:3 gv1q* mwp lnk+yoiid(o +2er dism *w2igvpl+:+yxn1 o q(oid 3ksipated by that circuit will

  If the resistance in a circuit with cons+mgn4jkpj q5z15bby 1tant current flowing is doubled, the power dissipated by znb+pm byk j51g5j4 1qthat circuit will

  If the current flowing through a circuit of co3a p9ldqxj7 7 -efuj* uz.dvo.nstant resistance is doubled, the power dissipated by that circux ujlzu -dojpdve9 73.q*.a7fit will

  During a power demand, the voltage output is ;1ukup f2y )ppsrc -gd38d i;nreduced by 5.0%. By what percentage is the power on a sy fkp;dgrnupp- ) 8;c2 u1d3iresistor affected?

  A current that is sinusoidal with respect to t.+*cpszz a ;b/5 d9skpmou ye+ime is referred to as

  Consider two copper wires each carrying a currenp agz:* hx).igsk)sp 5 *ltjz0t of 3.0 A. One wire has twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to that in t*0a:s g)itpxh s z*jz)5.k plghe larger diameter wire is

  Materials in which the resistivity bev(j7nj3wy2wvm7 jl(n comes essentially zero at very low temperatures a jy w7v l2j(mw(nj3v7nre referred to as

  What current is flowing if 06mbthw8d( 8d:5ae cnq3gt ) bs.67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating apparatus in 2.0 min. y yh1k*ojk6d:1dvc8e What is the a1y: e6hjydk8v *1dok cverage current?

  How much charge must pass by2gbcz5suwyb 3t3+w 0g 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 io-a.f9gjxj tg zn431uetsj l061x3p cf $4.0 \times 10^{16} \; electrons$ 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 on for 10 mo pf*a.6h q1qlt1xr 6win. What is the net number of electrons that ha q*6phf lo6 1atxq1w.rve passed through the coffee maker?

  In an electroplating process, it is desired to deposit 40zr i ;a a(.6omfbqw8u8shm 8n6 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 silvebw8 m8 z; uqn(m.aiho6sf86arr ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference is required to cause 4.00 A to flowm vdpas9mj/sl(wn 451 through a resistance ol /4 m95 1pasmw(vjsdnf 330 W?

  What is the voltage a1 2b476ln(g ohtbl qjvcross a 5.0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is2mjm5k sj1 6qc connected across 220 V. What current will flow?

  A light bulb operating at 110 V draws 1.40 A of currenzs7wz a-;1aw st. What is its resistanceazw1sw;s7z a -?

  A 12-V battery is connected to a 100-W resistor. How many electrons flow throu ,7q c5uvnuw(1k.c tligh the wirq kcv1.nc w,uui(lt57e in
1.0 min?

  What is the resistance odb-u s z5g2:ywf 1.0 m copper wire of diameter 0.40 inch? (The resistivity of coppeu:ds52wbg -z yr is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diameter and 45 98 yl 4d jv6ygbtpa.up -)uq-fm long, if thy6 dp a)v 4q-8fb- uy.9gluptje resistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resistivixakm4v/ hujk nq q5x5+ja5, u,ty $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (re c5 5kwiewpcv6(lv *.d,nrzl-sistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m lop2)ei:+expk 6 lupzin3c34 rtakl.v 1ng, measures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius is 0.321 m ksnr 7 /hun -7lh1z*rut/pcc-m) nichrome wire if it is connected to a 12.0-V batternrc*/u7tc7rzh nsu- / lkp-1hy. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular c j,kh+aj4nk zznj(z6h y0 l32qross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it clh30( qz j 24,6njjzykzk+ nhaarries 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 radk ; ;anstf2gs/v1je+je 71lbz ius 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 wir -h*p 9lr-kwo+yv/+ojy jou)oe (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 hask7 tl1fd t dg p6sl gqqv,.as*kc6wbu(516vb1 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 issxf:k/d2da 05p0c 4zyp fq p(4 spjpt9 $3.9 \times 10^{-3} /^{\circ}C$. 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)s (6)imuf4 9kjr6v - 6eiimnz9jfhql ne the melting point of indium. The resistance of the platinum wire n )qff zvui94ls66hij)e(6m k9 m- irjis $2.000 \; \Omega$ 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 thr(+xyd qyi9 57q;slxk rough an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is ratql6oy q*6w 2hqed at 1200 W. What current will it draw?

  A 150-W light bulb running on 110 V draws how much cquwa w -3wvh,( p9ydqswpj.09urrent?

  What is the nominal resista1w+ w2k9mys x;ge dqt0nce of a 100-W light bulb designed to be used in a 120-V circuds 2 kqtwgewx1m; 09y+it?

  A toaster is rated 800 W at 120 V. What is the resistance of its heating e fn7rn zn-s, ;x iyh:e/ihn*)4: yeunllement?:eyx ;n-7hfu l:z 4 rnsn*/ei),ynhni

  A 200-W resistor is rategy3 3zs8mvcw 2d at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is nyr 59ifzd.q5rated at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W buf i5tu qw0*dk;lb. If it is used at 120 V, what current does it draw?

  A lamp uses a 150-W bulb.,kqtm;j*/ 1 ldlfe )ea If it is used at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. Whatbylk+us1k4at u-x*2n is its resistance?

  How much does it cost to operate a 25-W soldering irugyg/rp0 :ln:on for 8.0 hours, if energy costs:rglpgy:n /0u $0.08/kWh?

  How much energy does a 100-W light ;q ,qu *h/qavj-wyq b(bulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V l/0 -zu0vufcai ine for 2.0 hours. How much heat energy is produced?facz/i u-v 00u

  A battery is rated a4w,fw sj: hmkgrg8f/i/wb8 o +t 12 V and 160 A-h. How much energy does the battery store?gmi b4,hs o+r8jwgw f/f 8/w:k

  How much energy does a 25-W soldering iron use in 8.0 hours/7b0mjbe 3rqf :9a xc2m b+ivy?

  A 100-W driveway light bulb is on 10 hours per day. Assuming the power compap s7uhchh5 w,1ny charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost to operate t5, p7 1whhsuhche bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours per dyaz/p 9h)o nl )znf:r*ay. If electricity costs 10 cents per kWh, how much does it cost to run the computer annuallyzhf:n)yz9opn)/*r l a?

  The monthly (30 days) eleqs .j. u*krxwpwvh2k. ;1g+nd ctric bill included the cost of running a central air-conditioning unit for 2.0 hr/day at 5000 W, and a series connection of.wrsu. ;k 2vwp.hx 1n *gkdjq+ 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 driej(njdx4/2bpp f yp;j-r2y7x vr 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.4pv 2n jjjf-72 b /dyyxp;rx(p 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 thgk1pk+qgpd-a)kg3 z+m20dnmkwty8 : rough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs.,nr-rxkwjtjc : bi4 2 $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 ry9(w fnq/ nk+uate of 2.0 hp has 60% efficiency. How much current does it kfy9/+wq nu(ndraw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V apz rj r(5tk*3*:fwzi: :ergroc power source. What rms current flows through thi:erf5k:*p: *rio3 wtjrr(zzg s device?

  A 500-W device is connected to a 120-V ac power source. 4knfd2qr dk4 3 What peak current flows throuf44qd kk32drn gh this device?

  A 500-W device is connected to a jbvt9g7( j.tm .va+ wl120-V ac power source. What is the peak voltage across this device?9. j.+vgwalb jv(tm7t

  The diameter of a copper wire is 0.081 inch.3b+vqssqe+(uvm) s,;b sl l, h 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? (Th(q,;ssv,mul) s3vhes +bl qb+e number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)