A device that produces electricity by transforming chemical energy into 8 2dew3cht-evelectrical energ3e hc2- vtd8wey is called a

  A car battery

  The total amount of charge that passes 7oqm/rh/ 6 f (8wt +zis *rerhmpw0pa3through a wire's full cross section at any point per uns*(3pm0p8h/ iw+ r temahz owq/r f76rit of time is referred to as

  The direction of convention cu4ctyj9z8xf,(1 qezb zgb,:k yrrent is taken to be the direction that

  A coulomb per second xf*pa hhnha2l9l6+.:zs3owk is the same as

  Car batteries are rated ineb) 98l :imdja "amp-hours." This is a measure of their

  The resistance of a wire is define2xtn/5kq/xix u6 2 rtld as

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

  The resistance of a wire3p3ungd:dobj3 m8b) 8rfro 9 m is

  The resistivity of a w4m/n xw1uh+i eh e j2b85kviw(ire depends on

  Which conducting materia*n u9syr*k .l oj.gtwcdnk16 3l has the lowest resistivity value?

  Consider two copper wires. One has twice the length of the other.8yiq6+wm- ww9z+i v3gnne) jb How do the resistivities of these two +z vwq n3i+8y6w-nmg 9 wb)jeiwires compare?

  Consider two copper wires. One has twice the length of the other. How d3grriacz mp )r;/3k:0vk3vb io the resistances of these two wc03z3 k/r)i3 a:mkp vir vg;rbires compare?

  Consider two copper w*4c u2eo2lbyxires. One has twice the cross-sectional area of the other. How do the resistances of these two wir2b*yox2u lc e4es compare?

  Consider two copper wikw9vtmr2r**i up/pd,res. One has twice the length and twice the cross-sectional area of the othe,kd/ mp2t* *viuw rp9rr. How do the resistances of these two wires compare?

  The length of a wire is doubled and th s ,k/33wav e,cw;9)glsfnmjdgt8h;ue radius is doubled. By what factor does , 3/g8 3k wce; twdjsanm)h9sfg,lvu ;the resistance change?

  How much more resistance does a 1.0 ud81yhv 0bm3 scz y11xcm diameter rod have compared to a 2.0 cm diameter rod of the same lenvs 1d1 3xc0yy u8mh1bzgth and made of the same material?

  The resistivity of most common m7 xz hm5uyh.s;6v bu5aetals

  Negative temperature coeff;4ftwvfr/v ( vicients of resistivity

  What is 1 W equivale e3g5 pmfq3m,cnt to?

  A kilowatt-hour is equivalens 6xg3s/5 v0qr1yb hlst to

  If the resistance in a constant voltage circuit is doubled, t+cxg7 a( chvw4he power dissipated by thawcc4+xg ( vah7t circuit will

  If the voltage across a circuit of constant resistance is doub wclnio34yk+ya90u 3ui9q q3lled, the power dissipated by that circuit iqik99w 43o 3lqyl30+c uyunawill

  If the resistance in a cirs mexsg e3c34q0m wv6;cuit with constant current flowing is doubled, the power dissipated by that 4s6e v;mwc eg30sxmq3circuit will

  If the current flowing through a circuit of constant r0 v i1iyfn/p+i2tnb h-esistance is doubled, the power 1/0iifh +ibn2tnpy- vdissipated by that circuit will

  During a power demand, the voltage output is reduced by 5.0%. By what perce 5dp2+kwi 7o0mruqkz(6 xrom7ntage is the power on a resistor affr m 0u(xw+i26 775m kzokroqpdected?

  A current that is sinus1/t4phy( j5e.c itw huoidal with respect to time is referred to as

  Consider two copper wires each e5(.3dd i tprdmn,d7g carrying a current of 3.0 A. One wire has twice the diar (,.em nddi73td5gdpmeter of the 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 ess mo;,/qappg;0 uf2x luentially zero at very low temperatures are referred to asp;fm go 2x,a /;0lpuuq

  What current is flowing if 0.67 C of cbot85 .qv s;dmharge pass a point in 0.30 s?

  A charge of 12 C passesah3ht-j/ pik7 d zf;m9s0 e*lk through an electroplating apparatus in 2.0 min. What is the average ct0 spelh/-3i;mk ah97djkz f *urrent?

  How much charge must pass by a point in 10 s for the current to be 0.50ee8 diehe5/ +a A?

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

  What current is flowi z7n:,xhnz.yk0d rc)lng 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 for 10 m 4df7k,7 *kgtrw (hklpin. What is the net number of electrons that have passed through the coffee mk *hprgkf7kt l w7,d(4aker?

  In an electroplating process, it is desired to depr 6uf( vt2us(qosit 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 ch(6tq2f sv(ur uarged, and the atomic weight of silver is 108.)

  What potential differ:w.z, okzv5 aqm w3qw+qso377 afq sb-ence is required to cause 4.00 A to flow through a resistanf s3-zwq,7a7qa5m+bwks: qqw.3o vzo ce of 330 W?

  What is the voltage across a 5.0-W resistor if the current through it is 5.0 Ar(/qox (e0 rwv?

  A 4000-W resistor is connected across 220 V. Wxg ssn+)x7px 1hat current will flow?

  A light bulb operating at c9g;tztw;mg8wcn i- - 110 V draws 1.40 A of current. What is its resistancetcw;9mg8i-tn- w cz;g ?

  A 12-V battery is connecteyp.ri bt .mh:+d to a 100-W resistor. How many electrons flow through the wire ir.ypt ibm.: h+n
1.0 min?

  What is the resistance of 1.0 m copper w4wbgt 1 og(ci9ire of diameter 0.40 inch? (The resistivity of o49i t1(ggwc bcopper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diameter an4pnet2 n:7jxe.xv c 2tb r7:und 45 m long, if the resis2.cunnr7e:p7xt 4x vjen: b 2ttivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (re:,fbe 5yjg8m 5foqexe: or -(ksistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resisxas -g.f1 iln/adl2 ig0b4z b9tivity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, mwii3 hatf(h)nhc(m- yb0 8s xejy 064beasures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the r mq44k88iyfh oadius is 0.321 mm) nichrome wire if it is connected to a 12.0-V bat f88hikq 4oym4tery. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular crosstx+brx8qcn6jy( )ym/ j(ax3 zyo 6 wf:z,bj-b-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (The resistia, bz8f job6z3r: 6y()(xmtyw bx/y-c+ qnj jxvity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wigzrk,wv+de5 jy/g1x7yn.1ga5 z9q nqre 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 (resissjv uu dk aa-)kr/+tf6.k2jxlgxl .5da4/oh*tivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a re(rhx(jz(npm/wagxu)kw **gah+ ; w.ms6nk m )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 coefficientqo;uqb x.w/ 0b f)z4yx of 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 resistany z-)-onyl 1hcce of the platin-yhl z)no cy1-um 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 9wmbtlt vt8ivq5 )01jyy:he6 an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current willccp3vb((*8orea1 v pq it draw?

  A 150-W light bulb running on 110 V ngansjk1p5 3ldzn :x. o0. 3ggdraws how much current?

  What is the nominal resistance of a 1r+j/92xbu ( 3cdviijj 00-W light bulb designed to be used in a 120-V j+r9x(vijj/ id u2 3bccircuit?

  A toaster is rated 800 W at rc*1qs)m s rsnu( iahh e.7f2l9i/)t t120 V. What is the resistance of its heating elemenru 9teil / 1sa*(hct 2hn r.if)s)7sqmt?

  A 200-W resistor is rated at tbv-l j8(u-ms$1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is ratyju o3 w,+ y,u;tme .eg07xmt++szrwm ed at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it iff1sqk(/wnzdp 9* b, eg2.ga cs used at 120 V, what current does it draw?

  A lamp uses a 150-W bulb6sk, kl.43r cj3hzvh q. If it is used at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What is its resistanc 6-x x43xasjbhe?

  How much does it cost to operate a 25-W soldering iron for 8.0 hours, if enm92qhda9w .h.t ojos ,ergy dwqjam 99.hhtso2, o. costs $0.08/kWh?

  How much energy does a 100-W light bulb use inc8- 6. n7.ez 7jnspaadc y.ccv 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How muc 92b7yv) saraxh heat energy is produ b rax2)sy7va9ced?

  A battery is rated at 12 V and 160 A-h. How much energy does the v,p4 -u9da2* ecdauxx battery store?9,a xdu*c4p2v-edx ua

  How much energy does a 25-W soldering iron use in0dm v:d ccvz9459k tij 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuminqz55f a l+pbg-o *g ;2hxpp:dng the power company charges 10 cents for each kilowat*: p5ng;ad5-pq lhg xpof2z b+t-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 h x(f9m 2awd(s0ppqbu3 m-np. rours per day. If electricity costpd sam9bfp0p2(q(-r m 3w .xnus 10 cents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of running a central ai01q do2n y jz*bq.mpj7r-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 elobmqn 7yqjz.pj2* d1 0ectricity costs 8.0 cents per kWh?

  The heating element in an electric drier operates on 240 V and generates e neo3h;mzo,cqy j/ll*ggvtj1u.qta i;)6 .- 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 temp/ .tv3, 1g) qj*nmezu-. g; ahcj;qooieyll6terature.) What effect will the repair have on the power dissipated in the heating element?

  14 A of current flows tdyj31jv08 dkn hrough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs z:82-jfvdc:nk k*kpr$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 won81kwdddprt8 l/7 l km 4-nx64lmixw1rk at the rate of 2.0 hp has 60% efficiency. How much current does it 8-4dnxl rldxwpin/tkwm8 m61d71l4 k draw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 12tzbimh2 gc)e bfl 9 ;g;/2lf-s0-V ac power source. What rms current flows through thi-m/;f i)zhe2ll2cgb fsbgt ;9s device?

  A 500-W device is connekm2mc3cx.0nm uwl8 ,dcted to a 120-V ac power source. What peak current flows through thisxc 3,8nm l2muk0.wmcd device?

  A 500-W device is connected to hi) h i.:ofhw9,0allka 120-V ac power source. What is the peak voltage acrol, 0:9)iho fkiwha.hl ss this device?

  The diameter of a copper wire is 0.081 inch. ye:lus(-gb6 x.p4jmw 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? w: y(4xp se.-mljb6gu (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)