A device that produces electricity by tra eyp;l 4ffdu n29ys8f9nsforming chemical energy into electrical 8u4yfdfl;s 2f99n p eyenergy is called a

  A car battery

  The total amount of charge t( t:jh2n5uyneh ld/7 szrc 0l4hat passes through a wire's full cross section at any point per unit ofd(4:le yj5cz0 nt/s u7lhrhn2 time is referred to as

  The direction of convention current is takenyc*ru6jr+wc7w0 e. * hhe:c(n yfrzo4 to be the direction that

  A coulomb per second is tb bhqjlh6+ uw,0u8 6x,qup2auhe same as

  Car batteries are rated in zd7kx .;pm ).+vhor tkahg3) :m,zsqv"amp-hours." This is a measure of their

  The resistance of a wire3l4iqg j y9iklh pe*(9 is defined as

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

  The resistance of a w gta*r+)nf z4m b/etw9ire is

  The resistivity of a wire depe52i ;ewgc2 qjends on

  Which conducting material has the lowest)nmb5 )w c;qrc resistivity value?

  Consider two copper wires. Onemrzy c/3h j8 d)gfb*amat 9b39 has twice the length of the other. How do the resistivities of these two wires c 9b9btfh83czd )jm y g/r3ama*ompare?

  Consider two copper wires.l w7+k7lkag d, One has twice the length of the other. How do the resistaklald+k7 g, 7wnces of these two wires compare?

  Consider two copper wires. One has twice the cross-sectional area7 0 ev*g,degaw of the other. How do the resistances of these two wires d*g wve 0,age7compare?

  Consider two copper wires. eh w7 vg/kd7( ;2q*rhc jfvsf5One has twice the length and twice the cross-sectional area of the other. How do the resista5f7k (wqhgh7*/vcs f 2ej;vdrnces of these two wires compare?

  The length of a wire is doubled and the radius is doubled. tlns1 (pi-cw95 v3ply By what factor does the resistance changetl3snp1 w(9l-5 ycivp?

  How much more resistance rd+b7*om4 xfbf65awb3zy (u qdoes a 1.0 cm diameter rod have compared to a 2.0 cm diameter rod of the same length and made of the same materialyb+7r 4f* b56uqwfao dmbxz3(?

  The resistivity of most co,*0p* zrs/ dttcz,leommon metals

  Negative temperature coefkn:t v:aba;xf 7b1ew:q 0,af1m)sxdyficients of resistivity

  What is 1 W equivalent2r9 so1/u htpmzx8 sd6,rjr7o to?

  A kilowatt-hour is equivay*o(y b2 k9m.,azd ecnlent to

  If the resistance in a constant voltage ci/q+0lttiy q: brcuit is doubled, the power dissipated by that circui/tqqyb+tli: 0t will

  If the voltage across a circuit of constant resistance is doubled, tha i,1ofjs*,g 8u uacc/e power dissipated by that ciu8io/1fg*,, caua cjsrcuit will

  If the resistance in a circtv)t88wrmjh 9 4cw+b jf0cnd 8uit with constant current flowing is doubled, the power dissipated by tha jt8hwnfb8j8)wc0mtc d+4 rv9t circuit will

  If the current flowing through a circuit of conv g.vbwub sjt2ig+9 95cs-5kv stant resistance is doubled, the powe9jvw+gb25 t g9cb svi -.5ksvur dissipated by that circuit will

  During a power demand, the voltage ou) fxahzd- 0ih:tput is reduced by 5.0%. By what percentage is the pow d0ha-zfi: )xher on a resistor affected?

  A current that is sinu 7eg)aomn486op) o cnlsoidal with respect to time is referred to as

  Consider two copper wires eac)pa0z* xsyre1h carrying a current of 3.0 A. One wire has twice the diameter of the other. The ratio of the drift velocity in 0zy 1a*) xsperthe smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially zero at ve-x ug. hh7j/pg(isc cx0 att(;ry low temperatures are a0 g -(xt7(;jpch hixg/t.cusreferred to as

  What current is flowing if 0 (gj5bfqqt7c* .67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes throulg+04jnz:;mgc i-c j7yw g;xg3nbtf1tb0ek;gh an electroplating apparatus in 2.0 min. What is the averag czwg-t gg40kjyl 0jnxg3tme cf i bb;7+n;1:;e current?

  How much charge must pass by a point in 10 s for the 4.;uk b1btuxjkm wy 7oe81ua- 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 ic(k y m()xx 4k6p.f9 /seccsetf $4.0 \times 10^{16} \; electrons$ 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 min. ka5)l+/i2mwm lkl60. rfl n vj What is the net number of electrons that have passed throu0l+)i26 kl j /vwkl5l.frm namgh the coffee maker?

  In an electroplating process, it is desirez:f hktts+a8 :d 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 s:a :ht+fs kt8zilver? (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 a7q diu f*g1,syw6 yu8jsmmu+5 resistance of8m61,mdys5q iwy * jsuf7u+u g 330 W?

  What is the voltage across a 5.0-W resistor if the current through it is k+s( taf6nc 5x5.0 A?

  A 4000-W resistor is connected across 220 pag).l,ua wl( V. What current will flow?

  A light bulb operating at 110 z23s(hce9qahl2omak oa -1f) V draws 1.40 A of current. What is its resistancemhkqf)h1o 3ae(aaoc l2 9z 2-s?

  A 12-V battery is connected to a 100-W rybvq8k lj8;n 0esistor. How many electrons flow througvn;8jy0kqb 8lh the wire in
1.0 min?

  What is the resistance of 1.0 m coppmn23py3clw( zer wire of diameter 0.40 inch? (The resistivity of c32(lw p3mnyz copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm infa,l sv 9pj8,y diameter and 45 m long, if the resistivity iflv9ps j,8,y as $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resistivitcdv8.6swj( c8b. r ngpy $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistivi 3t qk16;uy0w d:qwmiyty $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, mq 3d 6ixi-5womeasures 0.040 ohms. What is its resistivity?

  Calculate the current t4u)l ku i:2ntbhne- 6shrough a 10.0-m long 22 gauge (the radius is 0.321 mm) nichrome wire if it is connect4 2e:k6nniu )thl ub-sed 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 aw g*s,*-ejwdynd of rectangular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its len se-*wyg wdj*,gth when it carries 4000 A? (The resistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichromex , tsy4+zp8h8em8erq lx8cw3 wire 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 (resistivdofhx8-d.q r: ity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a fh(f0md f o4*f3czug p+tf 2i6resistance 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 rlr34 ( lw v*yfj+*mdmfesistivity 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 usedt(f56nmg)dpwrctw :d/l + j pq7q6i9z to determine the melting point of indium. The resistance of 6p97fq t+l6w /w)j :irdcm( tdqpn gz5the 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 thvo:5vj; f. t*sj9ah evrough an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current will oa1o+*/ ymf6vb gnx t)it draw?

  A 150-W light bulb running on 110 V draws ho , 8xnsg2g5kcmw much current?

  What is the nominal resistance of a 100-W light bulb designed to gl 7 u2hw0cski sxmse/q..p9 .be used in a 120-V cirh.sl. 0msgkwe/supix c.q 2 79cuit?

  A toaster is rated 800 W at 120 V. What ist) 5i h/b weqtd 2m; e;et5.yu;u1kvwb the resistance of its heating elemenv5bithe5bewtu;2 ;1wd ;q t)e.myu/kt?

  A 200-W resistor is ra(44miu g4u4 gngpat 0sted at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is radz5 l9.4,yqgjbj3rit2r nm.e ted at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, whdg/cp q cj(hz1 di) 1/5lxfch5at current does it draw?

  A lamp uses a 150-W bulb. rv q ohbg; 1 c27(vc lkq*cshlbhe*;75If it is used at 120 V, what is its resistance?

  A 25-W soldering iron run q:na +c9me70x-l,u7zzaoltaxas *1k s on 110 V. What is its resistance?

  How much does it cost to operate a 25-W soldering iron szq 6;8*akmnrse p8 h-for 8.0 hours, if energy co8 e*kmprs-6ns hz 8;qasts $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.w*9sk p1; *w1lwrugly0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How mvcz/7h32i 4c;ip madtuch heat energy is prvicadp/c3 mi;t4z2 h7oduced?

  A battery is rated at 12 V and 160 A-h. How much energy does f7-xo) wir24k wv (oqkthe battery store? o7k2vf -)i(qowx r4wk

  How much energy does a 2980psfg(w / s9vvwrgi5-W soldering iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Aibgl.a(fw g2x9t 0o.l7jr 8rw ssuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimate .ro7 jtx fw(rgi0ll 928bgwa.the annual cost to operate the bulb.

  A 400-W computer (computer rymc2dem*k/0) s0ahv plus monitor) is turned on 8.0 hours per day. If electricity costs 10 cents per kWh, how much does it cost tom* mehkad0c)2s/y rv 0 run the computer annually?

  The monthly (30 days) ele n473 bo 2/q4njczqkqkctric bill included the cost of running a central air-conditioning unit for 2.0 hr/day at 5000 W, and a s znj4oc 3bqnk24/q7qkeries 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 in an electric drier operates jmkz50mz;ubm r6; p+won 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 di z p50zjb+m ;r6kwm;mussipated in the heating element?

  14 A of current flows t;- ni2u ttfi5chrough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs dxu;-gc .c 7ap$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 thev gp7d9ke*8:wll45lzly3 e jx rate of 2.0 hp has 60% efficiency. How much current does it d5lezlw:p l4e*3yk9gvd7 8x ljraw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac powee4uy*: xom ;wc2mf0onr source. What rms current flows throu ;0o4:fmuo2c wxenmy* gh this device?

  A 500-W device is connected to a 1zt*f/ o,txb/ u20-V ac power source. What peak current flows throufou z,t bt*x//gh this device?

  A 500-W device is connected to a 120-V ac 3poyim0 htxqq2qel/ 1o k48,jpower source. What is the peak voltage across this devoq lh8,m/1j y2o3e0tix 4kq qpice?

  The diameter of a copper wire is 0.081 incc w1 syelyd40;h. The maximum safe current it can carry (in order to prevent fire danger in building construction) is 20 A. At thi;wy4yl s dec01s current, what is the drift velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)