A device that produces electricity by 7tadho *w;gm( transforming chemical energy into electrical energy is called a*dm; h g7wt(oa

  A car battery

  The total amount of charge that passes thvdtw1,:a pcuiu w(7e 6/ vj1evrough a wire's full cross section at any point per unit of t(w a7c1w d:t1v6/i uee,vjvupime is referred to as

  The direction of convention current is taken to be the direc8 n( o 0(ek9hvg7em90xlkz qrgtion that

  A coulomb per second is the same a-rdnxu 7y(ms1s.kl 3w s

  Car batteries are rated in "amp-hours." This is a measure of2uzegv/ co663sq 4mwv their

  The resistance of a wiref bt+csd) h;sr7tj-0w is defined as

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

  The resistance of a lx1v txr3,t 4sni:l yf4er )+owire is

  The resistivity of a w xffoa(v3,d ,k(3 w+yog wj+imire depends on

  Which conducting materi62pv lqwykr3 1t:z4 dyal has the lowest resistivity value?

  Consider two copper wires. One has twice the length ofm **2mdxlwo;qg 4nr0 o9ukv7 z the other. How do the resistivities of these two wires compareo*d4k9qz;*v nu2mw gl0m7 ro x?

  Consider two copper wires. One has twice the length of the other. 6s jbv vm)) ux0:wxe8tHow do the resistances of:v)b)wxxj8um tv s0e6 these two wires compare?

  Consider two copper wires. One has twice the cros0.6b rktor. 8ga is-ais-sectional area of the other.8i0.srkri -ao.gba6 t How do the resistances of these two wires compare?

  Consider two copper wires. One has twice the length and twice the 148-l (o/4ms3lxdgix xe qngscross-sectional area of the other. How do the resistances of these two wires co143xlno-l8gx iqm4 sdeg x/s(mpare?

  The length of a wire is doubled and the radiusouaoa8: x ; nwh2;,fqy is doubled. By what factor does the resistahoy n au8q;afx ,;2:wonce change?

  How much more resistance does a 1.0 cm diameter rod have compared to a 2.0+vpj2q)8; n yyaz g+vquz1 1ei cm diameter rod y )v angqq12p8 j;1y+zevuzi+of the same length and made of the same material?

  The resistivity of most common metiabk*1z)8cxqr eb-k 3 als

  Negative temperature coeff- +fkpx-d dvznw)c:e 2icients of resistivity

  What is 1 W equivalenwpr/p /ywf h(f awt): 9xl7lz:t to?

  A kilowatt-hour is eqyv g-(zg-andd42c t/p uivalent to

  If the resistance in a constant voltage circuit is doublem q-tnhg8ar r(t4m4-id, the power dissipated by that circuit wr mtrm-4 n4h8iagt- q(ill

  If the voltage across a circuit of constant resistany-ftusfax1 j7 t83- bfce is doubled, the power dissipated y-x-tu f s1jt3 f7ab8fby that circuit will

  If the resistance in a circ3cgt2cd rqo( ( 1bkgums1:. vtuit with constant current flowing is doubled, the power dissipated by that circuit (:t1gqkvo23 u1.brt( dc csmgwill

  If the current flowing through a circuit of ;q;fhd. 7zvlrbxb+ol )f-4yjconstant resistance is doubled, the power dissipated by that circuit wiql7 .fb+4dlzv xr-bfhj;) ;yoll

  During a power demand, the voltage -p*yrc xyvu 7e lw6q3+a2w9ts output is reduced by 5.0%. By what percentage is the power on a res c2*3+rwstyy ev w7ql-xa6pu9 istor affected?

  A current that is sinus nwfi+x8y;6 w.kzmm, doidal with respect to time is referred to as

  Consider two copper wires each carrying a current of 3.0 A. One wire hasrb5f r6.drmn2 twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire td .6n5mbr2rr fo that in the larger diameter wire is

  Materials in which the resistivity becomes essentially 0u0 ggqr-(9dct j)o hpzero at very low temperatures are 9utrgo -)dqh 0 (gpcj0referred to as

  What current is flowing if 0.6 rb 8fy,o5fe9w7 C of charge pass a point in 0.30 s?

  A charge of 12 C passes through an electropla8lx ;one 3psw4xs8:( be -zqxkd tp+o4ting apparatus in 2.0 min. What is the average cu8 o o( w4xx p3xee:q+p-nd sb84zskl;trrent?

  How much charge must pass by a poino)naa odg( u22t 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 fj uj8 2ntby( sg h9s ;dxlrw7s gy4-+-ie5+oeif $4.0 \times 10^{16} \; electrons$ 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 b:r qd095w f3+smdgekxs07e o13.5 A of current, has been left on for 10 min. What is the net number of mo g r5b90s:7k+ewfq3s0dxedelectrons that have passed through the coffee maker?

  In an electroplating process, it is desired to deposi,o 9 v upzwtfgqom15(bz+z4.it 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 silveq.5,zm(z4 wpt+zv i bfo1ug9or? (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 flo7jo8-8v x9twkz6sqy 49 dozp lw through a resistance of 9ow tlsp 49yq6zoj8x8- d7v zk330 W?

  What is the voltage across a 5.0-W (bms0he57m+ mlpc 2 rpresistor if the current through it is 5.0 A?

  A 4000-W resistor is connected uz .7o h6f3lhkf3tb:lcb ot .:across 220 V. What current will flow?

  A light bulb operating at 110 V draws 1.40 A of current. What is its resn(a1lgp yer 49gm q0/sistancea r(/gslq40p 1yen9g m?

  A 12-V battery is connected to a 100-W resistor. How many electrons flo; dplh/ xjs1/qw through the wire d/s;/1lpqxhj in
1.0 min?

  What is the resistance of 1:boppn:5-m s eg; cmz/.0 m copper wire of diameter 0.40 inch? (The resistivity of cpb5e;:c/ m-sg oz:npm opper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diameter and 45 m long, if te*j+)wnv rs 9;knq/ve xfzx-4he resistivityv)/sn-w9k; jzxxfenq v*+ e4r is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resistivic(ivkh+hu c/a 51 4lqkty $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (rtz1k5 tfdyfqp5- 5y5ct*h.bv 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, 4.0 m long, measures 0.040 ohms. What is its resistivity ys eq1xti 00yf.4ie6s?

  Calculate the current throughb(j5u /v xys*d+v jy-k a 10.0-m long 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. (The resisxj(d js5uyvvb -*k+/ytivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cross-secti a*wnjwn3.jn6luj +y abv9m0)on, 1.0 cm x 2.0 cm. W0n3* mbjlw6j.awu yav9+ )jnnhat is the voltage drop along its length when it carries 4000 A? (The resistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire hj;w:uee nxpq g5x *v ovgwp02u)*l70kas 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 wiqf/y eyyl9c59 re (resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a re3z i6y3 b5wnppsistance 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 p809haj65-w ld3pr bxr rz-wu7-rwh wl latinum 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 vzqk d) l5l5tv0w b6,uof indium. The resistance of the platinum wir 0 z,6) b5dq5kulvvlwte 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 throug*u 9 *ieecyl2dh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What c:0kqzfxm17phqn /xy p3:e f/durrent will it draw?

  A 150-W light bulb running on 110 V d;b vw(mvnxp* 5raws how much current?

  What is the nominal resistance 5 7ffbp7z8wyml/ay5 x of a 100-W light bulb designed to be used in a 120-V cimp7 flx5/a5w8y7 zbf yrcuit?

  A toaster is rated 800 W at (;k0da 8rdff), ;zt jzzqkfm1wo f2 j1120 V. What is the resistance of its heating element? 1kk;jd1t;z )z2m zfo0 ,ad(wqf8 ffrj

  A 200-W resistor is ratvxiq6:j5 e. t4:u1p ;mecmwvsed at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rz)fqra4wsu )qpt 9 8j)ated 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 doeg+ba0l if4mq;h7ty(fs it draw?

  A lamp uses a 150-W bo (+)mccnm41z ywmk0n 6lengdw *2/rxulb. If it is used at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What is its resisto-9 7euw 3 p giawkv4vuf)x16eance?

  How much does it cost to operate a 25-W soldering iron foqwkg xc/d 6(ld)i5v 1yr 8.0 hours, if energy co1 5i/)g6ydlxdkv q(wcsts $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 hous5h4p +t 4 w+yl0qybpurs?

  A 1500-W heater is connf /r6d/cv4 xmofx;1b,txmd*y) ritu6ected to a 120-V line for 2.0 hours. How much heat energy is u*r/obfc/1, v yt;x mdft6dxi6rx4 m )produced?

  A battery is rated at 12 V and 160 A-h. How mu.or)p:a ao jsg kqc2c3)5g9 qoch energy does the battery store? c)c 3 ojaoq5sp.2gg:oq9)a rk

  How much energy does a 25-W soldering iron use n49zjy s /kttl26zz-kin 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assumingjr,(an+ ubr:il98w kowx 3(jta8m +l6r nav t; the power company charges 10 cents for each kilowatt-hour of electricity used, estimate rmja3(ln ,(ra oklttvni8bw 8xu :a +;wj+r96 the annual cost to operate the bulb.

  A 400-W computer (computer plusjn6qt3 lfauvs3h:s; fe)vv 3; monitor) is turned on 8.0 hours per day. If electricity costs 10 cents per kWh, how much3s l3fq :tf3;vvv;u)a j6esn h does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of running a ce9xgbu qqil 2dp7 b,50qntral 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 m b2,q7uxlpq5d9i0qgbuch 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 on 240 V and oraoe*: n52:uq, l9ov z rhny(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. I, vonro(u rz qolh: n*95e2y:an 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 lvpbi, c4r0 x f).+titthrough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery cost 48n ymvrh;f-ts $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. Howvp.o/ +m7unrrh y )-uys6 o:kp much current does it draw from a 120-V line?) m 6 o7ys-/:nyrhuku.vppr +o ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rms current1367vpdfoaane 6 ea/ z flows ta pena636fe1 /zv7 daohrough this device?

  A 500-W device is connected h;4ve(pz i2 77kop aouto a 120-V ac power source. What peak current flows through this dh;4vz (upeoa7 ipok27evice?

  A 500-W device is connected to a 120-V ac a/l xopn6,l5wcr ;ps( power source. What is the peak voltage acrosp( /, soalwpn6x 5lc;rs this device?

  The diameter of a copp x8- (vc/fetuptb34 fzer wire is 0.081 inch. 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? (The number of 8x(tpufft-3/b 4z evc electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)