A device that produces electricity by transforming chemical um-sc1zd0 dr*energy into electrical energy is czm0rsc*1 du d-alled a

  A car battery

  The total amount of charge that passes through a wire's full co az41l kthm9*:-vj vrross section at any point mzlj1vrva* o k:9 ht4-per unit of time is referred to as

  The direction of conventiogoektc:pc 5(f+3bds9 n current is taken to be the direction that

  A coulomb per second is thers igr1:-uc( n same as

  Car batteries are rated in "amp-hours."lgv(*9hwok 8 c This is a measure of their

  The resistance of a wire i 5/m haxjp07jp7v.wmn) ba ;tzs defined as

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

  The resistance of a wire is;i t3 mzc3,okb

  The resistivity of a wire 7jho pv z64hl/depends on

  Which conducting material has the lowest rrn;o.c c8hv (f9f imvyz/)c-8 uxcnd7 esistivity value?

  Consider two copper wires. One has twice the lenxaa ;in qnq2qx5uw +i2j10v.dgth of the other. How do the resistivities of these two wirexd 0xin;5q+anawq2v i u.2j1qs compare?

  Consider two copper wires. One has twice the length of the other. v-p ,1hjsbk7l How do the resistances of theskb jp1 lhv7-,se two wires compare?

  Consider two copper wij05yk, f3pxc 7q lgdkqj( 9f*6hgqqf(res. One has twice the cross-sectional area of the other. How do the resggkpfx*q, 5 yq0 c3qfkj6 9d ql(7jf(histances of these two wires compare?

  Consider two copper wires. One has p+fgx45 d-dyktwice the length and twice the cross-sectional area of the other. How do the resistances of tx d-5+p4 fygkdhese two wires compare?

  The length of a wire is doubled and the radius is doubled. By what y86*8 aqrbojnfactor does the resistanqn*r j6o8b8ya ce change?

  How much more resistance does a 1.0 cm diameter rod have compared to a 2.0 cm d0lyyymokdb *65y) o..mgq*i siameter rod of the same length and msy*d5.m) iob gy6 yqlk0myo *.ade of the same material?

  The resistivity of most common metalsc*eo/85,/jdmw z mjti o4.m8usr 5gje

  Negative temperature coeff6cwr+ 29dic0l jnvaw f7 f9:.lf/dpzjicients of resistivity

  What is 1 W equivalent toasy86sv pvn -wsk5y 3l.9f;e y?

  A kilowatt-hour is e.rak;b007v2 joe ub ewquivalent to

  If the resistance in a constant voltage circu+o )so xn1 6u/zrcg(iuit is doubled, the power dissipated/()i x+rc 61u unsgozo by that circuit will

  If the voltage across a circuit of constant resistance is doub2*dk4yut 3fo/5zin j fled, the power dissipated by that ci 23zd/5f*ju fk4ynito rcuit will

  If the resistance in a circuit with constant current flowing 9d* zff up os/v4dcz))is doubled, the power dissipated by that circuit wil fv)4 zdpscu*)z/d9f ol

  If the current flowing through h/s:s oj7r0we a circuit of constant resistance is doubled, the power dissipated byj07se/s:rh ow that circuit will

  During a power demand, the voltage output is reduced by 5.0%. By whatk sj:7wb)livbhl8t+ nq;6skrx0 wmhs66 5) k i percentage is the power 6hmkv60rl sh7wiksn jq+lt)wxis)6 k b:8b;5 on a resistor affected?

  A current that is sinusoidal with respecw/a;wt-a- mzo t to time is referred to as

  Consider two copper wires 25evpl hp.h)yn )x ; s(defcn3each carrying a current of 3.0 A. One wire has twice the diameter of the other. The ratio ofsel3)5) ; n expp2cdn v.hhf(y the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially ,)t(k;dw brmasq e,lyw qihz.88,wp; zero at very low temperatures are referred to as w.ylk bq(,zd,;ras8 ewhtq8i) mp,; w

  What current is flowing if+x,tdzuhz1/ 4 jrqa *n 0.67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating appar9p+k uk7,mx ivatus in 2.0 min. What is m kpi+k,xu9v7 the average current?

  How much charge must pass by a p 3vntqy,zr .swz4)po 4oint 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 i1lx ypn6bwc( xc4d9 r+k)b6 eff $4.0 \times 10^{16} \; electrons$ 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 y5)i0zhfmo( e left on for 10 min. What is the net numzmef0ihy )o5(ber of electrons that have passed through the coffee maker?

  In an electroplating process, it is desired to deposit 4 zps69fe6z7b3rwp; at0 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 tp9 3ew6pa6sfr7zz t;b he atomic weight of silver is 108.)

  What potential diffezt.o,ypcm0 yf8 20 qk ofld.,e5o r:narence is required to cause 4.00 A to flow through a resistance of 330a.50nm.lrd,2fp c,ey:qoko0yzt o8 f W?

  What is the voltage across a 5.0-W resistor if the current through it iseg sazu,1 g1szfzb- (9 5.0 A?

  A 4000-W resistor is connected across 220 V. What curr(0 65 vvo,diot h.zynwent will flow?

  A light bulb operating at 110 V draws 1.40 A o:xct2f/ t*x o/o ww*+coqzo7 df current. What is its resistancedz7xc ow/f: co2/*oqtwt+xo * ?

  A 12-V battery is connected to a 100-zdon2- c pg 2 os*ydo6pe2s.1sW resistor. How many electrons flow through pe22z2* cs.6osspd no-g oy1 dthe wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.4gj6+;9kf merw0 inch? (The resistivity of copper is re+jwk 9f ;g6m$1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular r0ouj k /xn1 vd(i4oyb8od 1.0 cm in diameter and 45 m long, if the resistividojnuy/v (k08 xib1 o4ty is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resistivity +wwxl qe,l 0og w1.mm0$1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistiwqg aa,3g ib6ro91m)*j(u ie tvity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 i4qmrzrn(hxifs 5,i ud 9ct,(0s its resistivity?

  Calculate the current through a 1i7mau ohjqj2d:u++-g* va5 vf0.0-m long 22 gauge (the radius is 0.321 mm) nic jvam*hadu: +-j og2f5+qiu v7hrome 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 long and of rectangulai )p1d,kb2akmx6 1v- g xh+uifr cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when ,mfp)v16d1xki u x+bh2k- agiit carries 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 gm 82 j+yrmkhr u-v 0i90ut5ihmm 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 (resistivid2sld: 7h. nfih9llu2i zqn :7ty $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resistance *cdua-raq(/ hof $18 \Omega$ 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 platinnd,x2 2dnm.q (hpj4.dv/a8go +oqkxp 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 usd/e..tgxg t e9ed to determine the melting point of indium. The resistance o9 et.ge/gtdx. f the 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 throughyfc )l3.m8 z9psk6lj o an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. z;+x rb +g bbio,j(d-bWhat current will it draw?

  A 150-W light bulb running on 1s4:p)as 6q.x8urr bel 10 V draws how much current?

  What is the nominal resistance of a 100-W light bulb designed to be used in a lewk.1u yag1d xa8n;.120-Vn81xgldk .;a eu .awy1 circuit?

  A toaster is rated 800 W at 120 V. What is the resistance of its heating el2h+(m0sf )uicxm6 * mphl 7 -fmtvddi8ement?f0x7)m6i c ddm*+m-(h v8 miltfh2spu

  A 200-W resistor is r/ghgsxv4 0 t.eated at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is ratewtk-mp m630 jfdcr4 y:d at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is6dv8r fmeb:s 6 used at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. e- naul,ph(b+ If it is used at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 2c/il7 p9cx nbV. What is its resistance?

  How much does it cost to operatw s);no9w cg b1my:94 jtwt8ywe a 25-W soldering iron for 8.0 hours, if energy c9 mgy:s1 w4wbc;9)ntt 8owwj yosts $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 hdvh 3v.m* lj2gours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How much heat enev, kndxk(chg+v (x /9wrgy is producxxdgv9v+(cn(, hwk/k ed?

  A battery is rated at 12 V and 160 A-h. How mu)(4w1znqr v qqch energy does the battery store?(v w)z14q qrqn

  How much energy does a 25-W soldering iron use in 8.0 housbd7c0/u :wv+:nkcv 5 iqxmq,rs?

  A 100-W driveway lightme,yd)rq z7 w* bulb is on 10 hours per day. Assuming the power company charges 10 cents for ,zy*eqdw )mr7each 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 dayi s445l p5zw gc7k +:pmxntzx p11dbm1. If electricity costs 10 cents per kWh, how munz iwt 1x+pb75g1mdx1zm lcp4p5:k4s ch does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of running a cenk 8s-(;atw aa-gp4xj wtral air-conditioning unit for 2.0 hr/day at-waa s(pg-4 xa8;tkwj 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 ink)avxy b751hgdh8 2m2kvd gi/ an electric drier 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. In reality, the resistivity of the wire will depend on its temperature.) What effect will the repair2 hdv2 b d5gikx7am18y/hkg)v have on the power dissipated in the heating element?

  14 A of current flows throughv42ilx4q1j yx $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs5i;brks 19plfn,4 aro je oo:) $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+ avfz.m/.hnwzx1y:9w ui/ aw much current does it draw nm9wz/ivwwxy+uh /f:z aa. 1.from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. Whs(vksu 6.f)lf:p ,pimo oi3e/at rms current flows through:e.ifl,smi s6ukpv /p (of) o3 this device?

  A 500-W device is connected to a 120-V ac power soa)rcsrf3-a:y v :l+ bmurce. What peak current flows througha) v:b rrfl3c:+ay-ms this device?

  A 500-W device is connected to a 120-V ac power source. What is the peak voltagb5ms/42kmwm+j49kojv oz 8nue across this device4nbu+ m2komj /98s w4z jvk5om?

  The diameter of a copper wire is 0.081 inch. The maximu- f qv5re(ej ,xe,tz2om 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 carr(r fe -otev jx,2q5e,ziers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)