A device that produces electricity by transforming chemical energy into elecdg6o6*(k2 w gj;lvrwhtrical e(wg2 rkho6;ljgv* d6wnergy is called a

  A car battery

  The total amount of charge that passes through a wire's fum*,5o5d 9 zvoofn ij74w c)hxtm,i n3qll cross section at any point per unit of time is refnoc 5mj5i ,4wnqmv3f9)zo h7,tx* oiderred to as

  The direction of convention current is taken to be the dibml2z) k1i.vy6e65su, r ivwx8(hsrzrection that

  A coulomb per second 3+4u6n)m pqr+;gs* knu/mahfxezm q)is the same as

  Car batteries are rated in "amp-hours." This is a meam2 /sco3* lxf bk/vp9 m4yyvp4sure of their

  The resistance of a wire kn+(;0 ioy : 8ccbrvu8ymzk 7sis defined as

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

  The resistance of a wire isj6/wo:q y(wg n

  The resistivity of a wire depen,;:x rvwljc+f dv5.g, fv nta*ds on

  Which conducting material has theg1 wztvr v.,s5 lowest resistivity value?

  Consider two copper wires. One has twice the length o1uup z1u7n6c(hivag0 y2rm u;f the other. How do the resistivities of these taur17p0 1yvgmhz(6uui;2n uc wo wires compare?

  Consider two copper wih t8myv1a6 p,/xqvb va3l-p5rres. One has twice the length of the other. How do the resistances of these two wires covr1x m8ht , 65-ypblpaav3/vqmpare?

  Consider two copper wirsy vw/de1 p pf/2lc7d9es. One has twice the cross-sectional area of the other. Hol972/cpv1spf/ dey dww do the resistances of these two wires compare?

  Consider two copper wires. One has twice the length and twice the cross-secti /i3ythgkxctrt :/((i onal area of the other. How k3tig hrc/ (ty(ix /:tdo the resistances of these two wires compare?

  The length of a wire is vmf / gz+l5 n5tb.ci:udoubled and the radius is doubled. By what factor does the +bgu m5vz5nl /.ti :fcresistance change?

  How much more resistance does a 1.0 cm diame)jli:ss kauvj6fh6+ 3 ter rod have compared to a 2.0 cm diamevl6s:js)6ujik+ a h3f ter rod of the same length and made of the same material?

  The resistivity of most comm7jatlc(;h3 m bon metals

  Negative temperature coefficients of resistivi(ovjq9x op-5s.kz9 uity

  What is 1 W equivalent vptqfrj+o 0to6 :t8, it4ezh :to?

  A kilowatt-hour is equivalent kc 2qc4stbo8,0 it3yzto

  If the resistance in a constant voltage circuit is doubled, the power dissipaogllth;hw* 2k8 n,kdp6+)m-s n qohc9ted by that circuit 6w)+ q c,-8k;9kmtld pgnlnho2sh*ho will

  If the voltage across a circuit of constant resistance is doubled, t9gscdk 7pu;,i l thmrq. :6l+xhe power dissipated by thalxih.7qtm 9r, g d :+lsuk6pc;t circuit will

  If the resistance in a circuit with constant current flowing is doux -naxjs3 ow9/ me9q.obled, the power dissipated by eo9n . mjqa3xows9/-xthat circuit will

  If the current flowing through a circuit of comiom;sjjr: +rd77 7h hnstant resistance is doubled, the power dissipated by that circuit wj r7 o:s7jr im7h+mdh;ill

  During a power demand, the voltage output is reduced by 5.0%. By whglf/2i86 p9xlb;djv ur3f/w sat percentage is the pv3 xrpsw; 6 ujgfl bf//92d8liower on a resistor affected?

  A current that is sinusoidal with respect to time is refemsq*y7 qzu1 f/rred to as

  Consider two copper wires eacheo- *vfbp po5igge.:) carrying a current of 3.0 A. One wire has twice the diameter of the other. The ratei po:pg5-.)v*geb ofio of the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially zz7 x6.li(u g/zgrz l9kero at very low temperatures are referre7xgl z kzui9.l r/(6zgd to as

  What current is flowing if 0.67 C of charge pass a point in 0.30 o 55 jfa 3z.:dpshu v4ryf2*oas?

  A charge of 12 C passes through an electroplating app;od o jh)o(* -zelws/raratus in 2.0 min. What is the ) oh*- lzjrod/(;sweo average current?

  How much charge must pass by a point in 10 s for the current tvsz 0kw)+yiy 52ea we*o 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 flow5xyb4 sw ai:pl3beqdqcwq-p-,3i 8o6px j g/8 ing 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 curryn60 *xnw5 ) h pgfn-zj10vyicent, has been left on for 10 min. What nn6y1* cizyp f-50 )ngxj0vwh is the net number of electrons that have passed through the coffee maker?

  In an electroplating -t8,rwwe+ bt dprocess, it is desired to deposit 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 silverd+rbwwt8-t ,e ? (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 a resistanloops y(7,v.(uyx*lwce of pl ls(ox,u 7 .yy(vow*330 W?

  What is the voltage across a 5.0-W resistoruxqo+ u,3zp (7cd.gg w if the current through it is 5.0 A?

  A 4000-W resistor is connected g)41u31fxirotj9szs n90hr p across 220 V. What current will flow?

  A light bulb operating at 7b:9e )5umg o.+ aa5 csdfecmi110 V draws 1.40 A of current. What is its resistance. :+e9mic c7sbaum)o fdg5e5a ?

  A 12-V battery is connected to a 100-W resistor. How many electrons fltw9g )o-dih: gow throughwt)9: ighd-go the wire in
1.0 min?

  What is the resistance of 1. j3b.en+e+d bpbu 1.bouk. *nz0 m copper wire of diameter 0.40 inch? (The resistivity of *e. bp zk1o++j .ud3bnbnub.ecopper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of z lrgiz3g-x io;p;cswtr3d2 bj/l ped;)( l+/a circular rod 1.0 cm in diameter and 45 m long, if the resistivr gl i)3x (-rbsoj ll; zeczi/2w t+d;;pp3/dgity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of coppezu ct5(zo s1*ar wire (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 (resistivitq;mgpi, ,7r*yuj/cvdy $1.68 \times 10^{-8} \; \Omega \cdot m$) 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. yfitw:,5zfdw co8**i What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius is 0.321:myga3hm. 5bl mm) nichrome wire if it is conne3bghlm. m:a5 ycted 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 rectangular cross-section,cl0kp*6rl +f cuguts9c/ ef)9 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (The 9s+tu c6kcg*flrclu0)f 9/p eresistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire has a radiu,d+ :8 vzbfkxj kz7+bfs 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 (resistivitce/ 2 ytugud77y $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a ress *gwgilk)r1o2r.uy6*.z f d *7dm yjtistance 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 enhs820 a eadjin42s :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 +gx zy*ediy56/ mn/a sto determine the melting point of indium. The resistance of the plaisdy e6y*//am5zxng+ tinum 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 th8sz0 + ujbq/jhrough an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current will it dsro6ki/:av qd kjf5n:* xnf7t ys3: -vraw?

  A 150-W light bulb running on 11-u925hqdx d6 qt6ey qc0 V draws how much current?

  What is the nominal resistance of a 100-W light bulb designed to be used in a 1*dhscyw y3*u3z:z .yq 20-V circuiy*ywqz:s c3 * zyu.3hdt?

  A toaster is rated 800 W at 120 V. What is the h;v7,ixc rlp0x -r oy)resistance of its heating element?l0r xh, royv-;c7ix)p

  A 200-W resistor is raf bz-v-13q7g d0hdr6yv l*6 +ohqx swated at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is ratedfsad)-s)9m svn 55 /taxgz z)k at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what current does it draw?hszcqf9q7(o+1fopfys:z- 3 m+gk k+f

  A lamp uses a 150-W bulb. If it is used at 120 V, what is its resistancec9gy(t-zk 8,r xtrq nhc6k 28tg 9y8vy?

  A 25-W soldering iron t+egl+4 7) c.z cjhz ic5y8yyiruns on 110 V. What is its resistance?

  How much does it cost to operate a 25-Wq+glphqn9p,4 z 2dln /5 zryp1-bv3px soldering iron for 8.0 hours, if energy costs h9/-lx 5 zd p2qrl41vp+ pbpq,zygnn 3$0.08/kWh?

  How much energy does a 100-W light bulb use in nvklx* xg:o98 8.0 hours?

  A 1500-W heater is connected to a 120-V lin:030p hacm :pai ucb/me for 2.0 hours. How much heat energy is producedaccm / ai:h0um:0 p3bp?

  A battery is rated at 12m7-vxgjyd +-v V and 160 A-h. How much energy does the battery store?-v vyxgjd+7-m

  How much energy does a 25-W solderingor3 etn7( q(+v7 0yes97n3y olhngl6 d,qdpll iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Ass-tez3wpdf c kd9ke.8 1xq .4owuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimattfxek8c.3w p4qddekz 9.- 1o we the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) d-d,gy5gtb cb p qvr+9q.(t(cis turned on 8.0 hours per day. If electricity costs 10 cents per kWh, hobg. d5 ybdr,pgv(c 9( qtq-+ctw much does it cost to run the computer annually?

  The monthly (30 days) electric b5q+m3y; y m;lwes+fceill 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 elect5ws; y+e3lm;eq m+cyf ric bill if electricity costs 8.0 cents per kWh?

  The heating element in an electric drier 6ult vtq 9yk:6o q25ze6:zpjloperates 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 repair have on the power 6evl26k5t9 :tuy 6 zljop:zqqdissipated in the heating element?

  14 A of current flows througej. 3 6+hypzdmh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costskioyz(pp /rb vm0x2683buei 9 $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 rjf1vw 8t:;s,j tjqk- np/-b deate of 2.0 hp has 60% efficiency. How much currenj-18 jp:qvtejkt bn-d f/w;,st does it draw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. Wq04bjbgb4 /v xwab27ohat rms current flows throg4x 4 0vbqb/b7wja2 obugh this device?

  A 500-W device is connected to a 120-V ac power source. What peak curre qz61di.g bu*qnt flows through thisdz qq.6u*gb1i device?

  A 500-W device is connected to a 120-V ac power source. dh/o fjrd w/5y urb/s g)ba55; What is the peak voltage across this de;sgfa drrbb)h y/uj5d5 wo 5//vice?

  The diameter of a copper wire is 0.081 inch. The maximmgrxz47i2 w6 wum safe current it can carry (in order to prevent fire danger izgw72mi4xrw 6 n building construction) is 20 A. At this current, what is the drift velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)