A device that produces electricity 95wbi+ omg h5rby transforming chemical energy into electrical energy is called a+hg5ibm 9 row5

  A car battery

  The total amount of charge that passes throuj:u :k-omqj1 0av,oxhgh a wire's full cross section at any point per unit0k h1m -jj,au:qvox:o of time is referred to as

  The direction of conventix q) ur23ijjl(*gf lzy1;tri1 on current is taken to be the direction that

  A coulomb per second is thez rtmihb15 y40 same as

  Car batteries are rated in "amp-hours." Tc 8-r q r/k rtjgpct2(o.80pfehis is a measure of their

  The resistance of a wire is dewk l,nr-ai +-mfined as

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

  The resistance of a wire 6n 5dfedg(jo+ is

  The resistivity of a wire depenamcmj*xzk8,s /4f;j yff9bglv5b roz- 6 s/f,ds on

  Which conducting material pr9hk 1+ gq ierc4xcb,t:tl ;:has the lowest resistivity value?

  Consider two copper wires. One has twice the length of the other. How do tq wwty7( m;gfp j6wzfg+.21;c f (i) jue*clache resistivities oa6;l .()i7twfw; cqcjjgu+*wefzc1 pf(2ymgf these two wires compare?

  Consider two copper wires. One has twice the k) k1, jp5rrexyt9.cb length of the other. How do the rek .t bky1,j9 pcx)rr5esistances of these two wires compare?

  Consider two copper wires. One has 1ve87tsjl)n a twice the cross-sectional area of the other. How do the) l7as1entvj8 resistances of these two wires compare?

  Consider two copper wires. One has twice the length and 0. xzakgtbxz /z+h b9q82 :gbntwice the cross-section nbbh8qzg +/xa92zb .: 0tkzxgal area of the other. How do the resistances of these two wires compare?

  The length of a wire is doubled and the radius is doubledaca qdcpj/c )8c 5iw1,. By what factor does the resic1 /i c,5jcaw p)8dacqstance change?

  How much more resistance does a 1.0 cm diameter rod have compai) uoqguvrff7,21)p cred to a 2.0 cm diameter rod of the same length and made of the sa1foiuv )2cpfu ,g)qr7 me material?

  The resistivity of most commotmya3n1 wea/c h i90p/n metals

  Negative temperature co3xz 9gvsx985(dx lzqiuz*kq5 efficients of resistivity

  What is 1 W equivalent to w1vwsh3i. 3 iowc:gsd hg-*d:?

  A kilowatt-hour is equia0l mk ee5 uc)2zy+h1u)4nze tvalent to

  If the resistance in a constant voltage circuit is douf /jm(cgma,;)pm egj* bled, the power dissipated by that circumg j;(m gf/* )j,ampecit will

  If the voltage across a circuit of constant resistance is do6uq1by.a w wq1ubled, the power disswaw6 .b11yuqqipated by that circuit will

  If the resistance in a circuit with con0fws+yap q.4 fstant current flowing is doubled, the power dipwyqf. 4 +s0fassipated by that circuit will

  If the current flowing through a circuit of constant resistance is dou-g:;r l v/svfxbled, the power dissipavl;: frvg/x-sted by that circuit will

  During a power demand, the voltage output is reduceezs8c v c,uh52d by 5.0%. By what percentag5cch8 v 2z,esue is the power on a resistor affected?

  A current that is sinusoidal with respect to time is referr*eyn(f 0 kx8w vr-fg71m a5ahr0klh h-ed to as

  Consider two copper wires each carrying a current of 3.0 A. One wit -me zy,6bb o ) q(be(nt0j0g:ezeie6re has twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wireb) jeg 0z:oey(em e6tn,(i6bze qt- 0b to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially zero at very low te qu,8pkf65erhmperatures erq,8k p 56ufhare referred to as

  What current is flowin 8hf3a.l).s hs fee1 hdbpof/,g if 0.67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes through an elea ift ;hz*dl7le t/--gctroplating apparatus in 2.0 min. What is;edt*g h7 -t/i-laflz the average current?

  How much charge must pass by a point in 10 s for the current t6jixv9l s f6v4h2i z6yo 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 e:j;54xlo axc $4.0 \times 10^{16} \; electrons$ 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 oj6m -w*akp nbz+e2p,10 min. What is the anzeo 6b-2 jp+w,pmk* net number of electrons that have passed through the coffee maker?

  In an electroplating process, it is desired to deposit 40 mg of sil 4nu ex-p2mux4ver on a metal part by using a current of 2.0 A. How long must the curx4epnmuu24x - rent 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 through- jmbq s6q7jbo6 9bs9roiav: 7 a resistance 6o7q7s:9bs9 mabb ivqj6j- ro of 330 W?

  What is the voltage across a 5.0-W resistor if the currente;x1u ua7rea- through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What currcn+;95qlbhh6zmfy - nent will flow?

  A light bulb operating c1yyg8d/ rio/ at 110 V draws 1.40 A of current. What is its resistance?g idr18 co//yy

  A 12-V battery is connected 8/dk-c g*oly pto a 100-W resistor. How many electrons flow through th8/*y ocpl-k gde wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inb0x f b5+eq zd++ pjuh,f7x-woch? (The resistivity of copq whoe5+fbxjzpf +0db- +u,7xper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1zwbpvgj ulu/jmk8 4d+6d/ aca/b .i02.0 cm in diameter and 45 m long, if the rebbd / .zl86kwi4va d0u/2 j/g+acpj umsistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wireeg5t0i4js,h j (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 (r. gwk9hhjf/*s*2xr db esistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.5 xqws3qy+y , l9 19bwr)asmyr0 m long, measures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius i +-5eac-r rowls 0.321 mm) nichrome wire w5 eor--alrc+ 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 20nd8u1 2 /mnqye cm long and of rectangular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when /en 1uy8mnq2dit carries 4000 A? (The resistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome 1,fj- xctlfwh8h( 3jvwire 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 (respo-2 dx22qtf9bzov:jistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resistance of h( i oj3t14dc)b-2jhyl; (bgb qqygi7$18 \Omega$ 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 platinum4zz7u 9 e+ctgzw::to u 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-moh x8p*r,u j of indium. The resistance of * xujp-m8or,hthe 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 thr8zziud04/r fk;o)kdmough an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What curr5ru1 t*0qcem p1ijtk/ent will it draw?

  A 150-W light bulb running on 110 Vxl8x2 :ht f/6j;s hxgu draws how much current?

  What is the nominal resistance of a 100-W light bulb designed to be used in a 12v /0:n0cjt(i ,hq lrn0p ix5hwn(/xh5lp:00c ,i0 qvn twirh j0-V circuit?

  A toaster is rated 800 W at 120 V. What is the resistance of its heating eek*vmu b(ow b0c co7*/lemen*bvcwk(7b0 m*/ouoe ct?

  A 200-W resistor is rati)ev yv;/al )ved at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is ry uj, mky,vd0u r-z97d)rt3zyated at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If ng)zv8bted 0cwbtvfxz;*dz;.otc 4- vj4:3 pit is used at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is uon*li r 2d8kl;sed at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. Whatpe16m+m i9k9( ;p dl c:yxlmti is its resistance?

  How much does it cost to operate a 25- k paa5)l/7,nc-z zbupcb-ge6W soldering iron for 8.0 hours, if energy coz6pz-)gn75cc -pba/b,l u ake sts $0.08/kWh?

  How much energy does a 10n w;mlkx *e9z80-W light bulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-ppd9 , h*0hjdxi*a m6dic;u, xV line for 2.0 hours. How much heat energy6 hh,,cxp xi9*d*ipud m0jad; is produced?

  A battery is rated at 12 V ww,f 0 gykl kdj3v o9 ,-oo2bce,xa-v2and 160 A-h. How much energy does the battery store?-a, lg w,9 kcojevwky,xv0 fo2 3bd-2o

  How much energy does a 25-W soldering iron use in 8.0:w8fhbegv9ze t c3lbwf7k5, : hours?

  A 100-W driveway light bulb/e nezc ,yx;2m1 xf(ev1jmx,x is on 10 hours per day. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimye;vzm/,1 exf,cn xex(1 2 xjmate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours per day. If e3vz;bn+:y)s)59fvsepm p ud vlectricity costs 10 cents per kWh, how much does it cost to ys)u )5f s+ ev dvbpvnz;p39:mrun the computer annually?

  The monthly (30 days) electric bill included the cost of running a central bl9kitphs - n0,g.hq8 air-conditioning unit for 2.0 hr/day at 5000 W, and a series connection of ten 60 W 9n kl,qi.-th8g 0sbph 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 drier operates ogcdy kci4ric 3++l6,an 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. In reality,gcail rk+63 c4iyd+,c 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 throu84erdse;ia2x qim1a lu(8n+y gh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs s/fd8e7)xpv2( o-l 2bl/z 1uqh ilkur$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 rate of 2.0 hp has 60% efficiency. How much currf 18efft0r u3rent does it draw frf 8f10uer3rftom a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rms current flows v1 tbgsbi,9u,jqwh+ q10j j1rthrough this db01j,jg+1qv 9bu1 qijsw,t rh evice?

  A 500-W device is connected to a 120-V ac power source. What peak current f)zbe ; vfn hl :m6-7vithp-wq(lows through th:)e6b7i- q (;mz hlh-vntfvpwis device?

  A 500-W device is conne/vkep)u)q0uqg,vdfy.q x: 5 ncted to a 120-V ac power source. What is the peak voltage across this devdp qf5,ek:0 q ugqyv.uvx ))n/ice?

  The diameter of a copper wire is 0.081 inch. Theiaj ihd,54 4r7 ;vdsdj 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 ca, isij; d4davj7 5hr4drriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)