A device that produces electricity by transforming chemical energ:q5oat y+3pb ry into electrical energy is : +5oaybt3 rqpcalled a

  A car battery

  The total amount of charge that p+n:zzzb 6ha i le-.o)wasses through a wire's full cross section at any point per unit oe+oa)nzl zbw-:. ih6zf time is referred to as

  The direction of conven5ttq3be/ 69ay sd zj6stion current is taken to be the direction that

  A coulomb per second is the*x1a kwq))vkz same as

  Car batteries are rated in "amp-hours." This is a measure of theirox 2.c6xigfi6cxr - 8p

  The resistance of a wire is defiprchi18w konfzph2ym8hm x+ 9 -m, 2+nned as

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

  The resistance of a wire iig1z 1;g2tqm,hj0ff 6mx ab.ws

  The resistivity of a wo t(le1:b45ymmj + m*wr2zeieire depends on

  Which conducting material h:mkwg -1lh(w (bi6zqlas the lowest resistivity value?

  Consider two copper wires. One has twi/d;f5v )xu exmce the length of the other. How do the resistivities of )e5/;ufm vdxxthese two wires compare?

  Consider two copper wires. One has twice the length of the other. How do to0btopx )q*q/ kio fi+t+6e5 yw mn;s;he resistances of these two wir mo5 o+60+qobpytn tq;*kfew;/s)ixi es compare?

  Consider two copper wires. One has twice the cross-sectional area of the othetl,3jk8l a5s ar. How do the resistances of these two wires a5 lsj, 3al8tkcompare?

  Consider two copper wires. One has twicn/1x0 +kuxys8quomya1 2ode/ e the length and twice the cross-sectional area ofuds+ xu n8m 1yakoq10/eyxo/2 the other. How do the resistances of these two wires compare?

  The length of a wire is do.oph9 7+:rp-s rf crliubled and the radius is doubled. By what factor does the resistancifp7r c p+l-9:rhos.re change?

  How much more resistance does a 1.0 cm diameter rod have compared teyetji*q*s- . o a 2.0 cm diameter rod of the same lengst je*qy *e-.ith and made of the same material?

  The resistivity of most common metal7z;+sjey 0d+ q7)fk zw2swzpmo 3hrn.s

  Negative temperature coefficients of rehwnz n02vv/:n 4 kwm //ifojhs7 -lhb.groz(0sistivity

  What is 1 W equivalent tollz6 -3i2/s-zw3jm :w rqpezw?

  A kilowatt-hour is equivalentdcxgvk56 /(vj to

  If the resistance in a constant vf r4u4a4uri b 8dpvb3y) ;m;ra,*xdl voltage circuit is doubled, the power dissipated by that *4;x)af ri, dd4rb 4yv 8am;uvblup3rcircuit will

  If the voltage across a circuit of constant resistance is o5-wreu/* yphqe:p: rdoubled, the power disup hp5 r*ew yr/-:q:eosipated by that circuit will

  If the resistance in a circuit with constant current flowing is doubb63 7lvzepg6yled, the power dissipated by that c3e 7b vl66pyzgircuit will

  If the current flowing through a circuit of constant resistance is douywk jz4vra 4rq637a2cbled, the power dissipateva67 2ar44ycwjrk3zq d by that circuit will

  During a power demand, the voltage output is reduced by 5.0%. By what perczdq4y7uja21cro ; m( wyp y*j3entage is the po*c(yj wjup7 ; 3a42yq d1yrozmwer on a resistor affected?

  A current that is sinusoidal with respect to time is refkf2ecsq fyh +z.n0421zvlv, h7. qctg erred to as

  Consider two copper wires each carrying a current of 3.0 wf;y uzn.s9h8m;rn/spk l k;o/*sl; aA. One wire has twice the diameter of tyk.8n/h kumows*pr; f nl; 9;lss /za;he 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 very low;vzw mle59m b,qeufv.y( 1sp9 temperatures 5, wes1mvep 9fq(muyzv.bl ;9 are referred to as

  What current is flowing if 0.67 C ofm3u0x7 i3 u3bymejy*og2ag2z charge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating apparajp+h-g 0v 2s 2kvezqmbpb0,3q tus in 2.0 min. What is the average curge,vj hpqbb -0 3pq0v2z2k+msrent?

  How much charge must pass by a point in 10 s for the current to be 0.50 A? jv,/ 0yu8rys8ue.tm 3u.gyu d

  A total of $2.0 \times 10^{13} \; protons$ pass a given point in 15 s. What is the current?

  What current is flowing+3iqk ;yqr)pu 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 been left on fo dbgyv2y :z b6rpxngkb48/7b(r 10 min. What is the net number of electrons that have passed thr y:8xdbp7/rvny gb462bb kz g(ough the coffee maker?

  In an electroplating process, it is desired to deposit 40 mg of silver on a mek-s:c0 0di8qqogh,,xvhtt:qn )ra )s tal part by using a current of 2.0 th d o)rxhva:, sci0,gqnq8 q-t0:)skA. 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 requimypzt 0vr o)e0te + lp0sbb1,1red to cause 4.00 A to flow through a resistance of 3ep s)1ry 0e, bmz+v0ol0bt p1t30 W?

  What is the voltage across a 5.0-W resistor if the cusv 0-u k wzrclg +x146n2hzr*xt3q. bmrrent through it is 5.0 A?

  A 4000-W resistor is c+8 sitq+z )hc 7jjz9kaonnected across 220 V. What current will flow?

  A light bulb operating at 126buxqp)skhr:jd;k* cos(w( d(xeo86 dp(ew 10 V draws 1.40 A of current. What is its resistancebo*( q2 e(kxhp:spk cd j w ;x((dw68ro6ude)s?

  A 12-V battery is connected to a 1ors/wy o5 p1 t+.vr7vw00-W resistor. How many electrons flow through the wire inpw/+s r5vwrt vy1o o7.
1.0 min?

  What is the resistance of 1.0 m codnxbl)kp 68 /cpper wire of diameter 0.40 inch? (The resistivity of copper ick6lb/ ndp) x8s $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diameter and 4lr g5,g dpwv/kaf5b14 5 m long, if the resistivityafgvld1b 5 wgk5,r4p/ is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wirefh*:r7lv: et n (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;swl dw61sq5x (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 ohms. What is its resistivim4ich) fzx8 d*y6y7klty?

  Calculate the current through a 10.0-m long 22 gauge (the 4,-o*nawt tzc radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. zo t4 -wc*,nat(The resistivity 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 2.0,+g g,5cp0 at vkmpi5b cm. What is the voltage drop along its length when it carrik +pm , gib5tpagcv,05es 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 radius of 0.50 mm and a resistivity oa 9+or(mev n7fa7m ki0f $100 \times 10^{-8} \; \Omega \cdot m$. If the wire carries a current of 0.50 A, what is the voltage across the wire?

  A 1.0-mm diameter copper wire (resis9 vcgizpl;/y.w 5ia.x tmt8h2tivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a regex3o: ovsa 7.sistance 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 platinymf 3c;x0k*mors4fx; um 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-3/qru ce deo.abj(e)fl oar8 7 d+e.w melting point of indium. The resistance of the platinum wireqb.a)ej/efr cweloa rueo8d -.3 (d +7 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 thjbtfo06z ,fgs 0k8ui9)mt i1orough an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated atn-1aipv 4 syrvl:3lo kpl ()n3 1200 W. What current will it draw?

  A 150-W light bulb running on 110 V drax6re rpqb3p:k)yd /plfr3)2j ws how much current?

  What is the nominal resistance of mpjk91z2z o 1aa 100-W light bulb designed to be used in a 120-V circuit?m1 oazp9kj2 1z

  A toaster is rated 800 W at 120 V. What is the rwarb1c9 .4qx resistance of its heating elemenqcbwr4rx19a. t?

  A 200-W resistor is rate. +x 13hi,m7)gqnbxf0xc d wqzd at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rat zq.rwwkc4d/-ed at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what cmc7y7*ihj0v+ bfent/x/ m l,ourrent does it draw?

  A lamp uses a 150-W bu0ie d*1 v,s rngr.;vdblb. If it is used at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What i2fxnx. r0a2 tfcv8e. os its resistance?

  How much does it cost to operate a 25-W solden/7/uo8db mw6royj 7 wring iron for 8.0 hours, if energy c/un8 7r/o m7bodwwy6josts $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 hoa fn4q1mpd:ht z2 e.f)urs?

  A 1500-W heater is connected tem17e9yiy0 gto a 120-V line for 2.0 hours. How much heat energy is produceym1yt ge97i 0ed?

  A battery is rated at 12 V and 1nuo:4g.8ur3 c7bu jyf60 A-h. How much energy does the battery store?jocr4:b8nyu3f7. ugu

  How much energy does a 25-W soldering iron use ing92/zmevjedlanvu 7a5(m:y +(o l7z j 8.0 hours?

  A 100-W driveway light bv9viek(/y8ra6o ra j4 ulb is on 10 hours per day. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimate /ekia v49ja6oy8vr (rthe annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is t83y ofntl/ 5s;wzyov 4urned on 8.0 hours per day. If electricity costs 10 cents per kWh, how nt l;wf/ozsyoy853v4 much does it cost to run the computer annually?

  The monthly (30 days) electric tadtax5w9jn fl4s6 9,bill 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 contribute to the cost of the monthly electric bill if electricit t aas49jl, 6d9wt5nfxy costs 8.0 cents per kWh?

  The heating element in an electric drier operates on 240 Vwo.+ou8yij ;h zlj)g9ainp8j)8 zsh5 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 tempeul8j y+hhoj 8n g).z8azipw5ij9)so;rature 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 thcrbhe;e vy n.+.:z*) g(kyuxmrough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costd,bz,cjhy7*mj9e v b4 ev yz2 sx5o2u: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 wor ,bdk9-jqrk 7;i+qeu;z /uc svk at the rate of 2.0 hp has 60% efficiency. How much current does it draw from a 120-V l/r -; u7kjecud,kv;z+qq 9sbiine? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac pow9kt xgd.a-1o0vge5 6zqh 2 tpper source. What rms current flows through this dexe .69k -5z dh0tgogptp vqa12vice?

  A 500-W device is connected to*v )bi2nf-;tx5jr3t + aie jaq a 120-V ac power source. What peak current flows thronf q r-2tia+3 eta*x ivbj;)5jugh this device?

  A 500-W device is connected to a 120-V ac power source. What is the peafjrqy0+:c ly 7sc 3b7vk voltage acrc3bqc :+07lr ysf j7vyoss this device?

  The diameter of a copper wire is 0.081 inch. The maximum s)emv+s /rasgg ;-g1 fsafe 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 carsssfgrg1ga/-m v+ e); riers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)