A device that produces electricityddo 3wnvan1nwc+2pc(3xyx 8s99 .az p by transforming chemical energy into electricx+1 pcn93nwx yoncasz8v9.d 2(3pwad al energy is called a

  A car battery

  The total amount of charge:0t:aeei cp3 y that passes through a wire's full cross section at any point per unia3::yecte pi0 t of time is referred to as

  The direction of convention current is taken to be thx6ykh(q1g ma qxi(-ow8r8 )tia +dq 5ze direction that

  A coulomb per second is the same-tr 4hjx0o)uk(ow oer-zwz4( nn8 c e0p+e)ch as

  Car batteries are rated in "amp-hours." Thff:ygvc* 4 ;;4 xdjkphis is a measure of their

  The resistance of a wire is detk jg )23j mcj3)3ajy;tu8iu dfined as

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

  The resistance of a w t(ak ps wzk)ij*p+6hp37er7f ire is

  The resistivity of a gadw0wkhm k 1;55*vrbwire depends on

  Which conducting material has)c rg+l+4 ey.bd+zsgm the lowest resistivity value?

  Consider two copper wirehdq- t81tz,0iobp6 a qs. One has twice the length of the other. How do the resistivities of these two wipto1b h8qa z- tqd,i06res compare?

  Consider two copper wires. One has twice the length of *j. 7qdcca xnswk, ,2ithe other. How do the resistann7ics2jq xw* .k,d,acces of these two wires compare?

  Consider two copper wires. One hasbnmdfkumdq /t dt9:*xjq-: +0 twice the cross-sectional area of the other. How do the resist d/:td* ndx-b f9mkj:tqm+u0 qances of these two wires compare?

  Consider two copper wires. One has twcot7ooj04.rte m (d+mice the length and twice the cross-sectional area of the other. How do the resistance(cotood4 jm. 0 m+rte7s of these two wires compare?

  The length of a wire is doubled and the radius is doubled. By what :gjc79b5 jud;9i e6 vk2s1 ibnwqnj: ffactor does the resistance ch9qw1:bc9gnfji ;6v iu2j7:5 jdb k esnange?

  How much more resistance does a 1.0 cm diameterc5kszeqa-7y1lo np xwpe)0: x10, mni rod have compared to a 2.0 cm diameter rod of the same length ankmosz) lq15 we0xcxp-,0 y1 ie:a p7nnd made of the same material?

  The resistivity of most cour s; e*+b3v +k uoi(cjz4za)immon metals

  Negative temperature coefficients o yctii*xefq+lm7 54sw 5 (qx2af resistivity

  What is 1 W equivalentg30sa+9/ ft+cxs lz 0dcqbz7j to?

  A kilowatt-hour is equivale ,s0frt csf2g4* rqwp*wzypm i;:q: .ent to

  If the resistance in a constant voltage circuit*loq4f /,/e( u)jjgfpymb c4k is doubled, the power dissipated by tha4ly*qg /pk ,fb/)uojc j(m4eft circuit will

  If the voltage across a circuit of elbbo 7c t9tft-j86g tzjsj:uyg*9 17constant resistance is doubled, the power dissipated bt9:*fbycj8j 7- elbto6g 7tsu 1t9gjzy that circuit will

  If the resistance inzbab9)w5ap pbp1h0+ f ,+z wgj a circuit with constant current flowing is doubled, the power dissipated by that circuit wjpp5bfa9+) bhw +w 0p zg,z1abill

  If the current flowing through a circuit ofwmcmren61 c -f/iu 7i9 constant resistance is doubled, the power dissipated by that circf-cr6wc mei7m9 u1in/uit will

  During a power demand, the voltage output is redlz* l+c36lmh buced by 5.0%. By what percentage is the p*l c63l +lzhbmower on a resistor affected?

  A current that is sinusoidal with respect to time is referre2kl k06x+j idrd to as

  Consider two copper wires each carryingwp ov9/9mbe1f/ndm*+ fwc 6bv3j q0 ta a current of 3.0 A. One wire has twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to that in the larger diame cwj 9/d/enfvbt6 v *+10q9pbaw 3fommter wire is

  Materials in which the resistivity becomes essentially zero at very low tl0-o ha g3vj*cemperaturl- c0a*3ogvh jes are referred to as

  What current is flowing if b 9-jt +xkauzo9m*1hn0.67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating apparatus ir*hx3i e ow1.xwbyzx+/ u)vp/n 2.0 min. What is the average current/y /1iu*ob.hrezvw+x3 )x wpx?

  How much charge must pass by a pointi+ff9+ )e pup ad4x3v(egngcpw,b4v, 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 if zu1k 7r*uvx5i $4.0 \times 10^{16} \; electrons$ 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 le- pkg97*r8rp qih4kv.n3ufd *0qc /amg )gixvft on for 10 min. What is thudnq9r 3gakg .qf8p v/cihrgk v0*)m p-*i4x7e net number of electrons that have passed through the coffee maker?

  In an electroplating process, it is desired to deposit 40 mg of silvxy)n0q)w x1+wv pjml1 s:i3bger 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 the ato ix3q: 1)mp vgx s)nwj0lybw1+mic weight of silver is 108.)

  What potential difference is required to cause 4.00 A to flow through a resista 1iffrvo)a7; rnz80 qence ofofiv ez8aq 0;nrf1)7r 330 W?

  What is the voltage across a 5.0-W resistor if the current through oczd :,4ku+xkp(qh:x it is 5.0 A?

  A 4000-W resistor is connectwo fs0l(q75x ied across 220 V. What current will flow?

  A light bulb operating at 110 V draws 1.40 A of current. Whag-qjtwt gbo m-7dh(n5 t el5*.t is its resistance?hetlg 57- obn.(q wt m5*dgjt-

  A 12-V battery is connec bq*t)4hj daj/ted to a 100-W resistor. How many electrons flow through the wi*dhq jt/ab )4jre in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? (8pnxd* 0.t7pl7l ntzoac i8 )gThe resistivity ofdca t8g8)ox.7lptl izn07p* n copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diame4r9:o i( ea lw;n.wpavter and 45 m long, if the resistievl nwp woi4:r a9a.(;vity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resistivity ekzmt98u p7le2iw u h-e/- s)f$1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resis2 j:py k56p)qjmrp5dk(sm8 a ativity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 ohm4lv 2/y(ufkw3oj1dd hee /1ils. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius is 0.321v74o5 x:k kf8setvfe( mm) nichrome wire if it is connected to a 12.0-V battery. (The res(f4sv7e exo: 85ft vkkistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular crv7guk*, 7chps tp)1vioss-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (The rg 7tv 71ph,p*vics)ukesistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire has a radiu dm5,,g gg)eb;pden7 sjg1 e5ks 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 (resiszus d)6uu)k h*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 resisty*k3 xq9pl305u, tvpf xmne-eance 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 1nk- k0rfpol(:m lbp*3un5doresistivity 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. Tyzbr-9/ eqj*te t1:l re0k u6khe resistance of the platinum wit:k-*zt1y06k er uejlr9qb e/re 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 througn2 s leg(4gs*(bztsf2:4 njl20oy oum h an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What currwaq. evp(j4+zent will it draw?

  A 150-W light bulb running on 11 w4wx l4i46 zg3gk.rsi0 V draws how much current?

  What is the nominal resistance of a 100-/xt qtt 1: ,;ml rwl6f1qjrx2uW light bulb designed to be used in a 122mttqr wjt:x,lx ;r1uq/ lf1 60-V circuit?

  A toaster is rated 800 W at 120 V. What is the resish4j)zmhpuj1e5ja0:4w w k mc +tance of its heating elemenhpc:+5 4w1 ua wkmjj e)hmj04zt?

  A 200-W resistor is rated +a)vn +n1i6vp/iciyl at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rap ux:8m)psgv:l t,n r-ted at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it 5zc3ea+tx at6of up:/is used at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, z.zee*(yquf084 qrp d x 557tijzm*fd what is its resistance?

  A 25-W soldering iron runs on 110 V m56 pi 5ba iub8er:gqoz5wic((6hv8e . What is its resistance?

  How much does it cost to operate a 25-W solderigg 5ho13o13x9xjd x rqgb*vf 2l *nge,ng iron for 8.0 hours, if energy costsx 5jx9 g2ob n3*gf3hlgq d1g,o*vexr1 $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 hours?vm ;gm fajb)61w8p dz88sb7hx

  A 1500-W heater is connected to a 120-V line few r8vssno /5 wj5.bd,or 2.0 hours. How much heat energy ij8 bse5. o,/d5nwvs rws produced?

  A battery is rated at 12 V and 160 A-h. How. ) fbj+z4hatq r*9xun much energy does the battery store?ru.z) 9 jnxb*a h4tqf+

  How much energy does a 25-W sold6/ 7r3wg vctvkering iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours peph/xu89)4c pe nbz uds;s2qm*r day. Assuming the power company charges 10 cents for each kilowatt-houc s)2h4/xmdbq8s;*pn upez9 ur of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitoyr0b*w1o kxx; r) is turned on 8.0 hours per day. If electricity costs 10 cents per kWh, how much doe; k0r*wxx1o ybs it cost to run the computer annually?

  The monthly (30 days) electric bill included tho5fauf6 r b7j3e 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 contributjforb 6fa5 3u7e 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 gene) .ud9ammz,ip6bkvi 7 tel 4i,rates heat at the rate of 2.1 kW. The heating element shorts out and, in repairing i7i 46pmi)tl ukmbv, ,ad ze.9it, 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 dissipated in the heating element?

  14 A of current flows throug ;yukziza ;(6f ur5g(lqy08jyh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs po6/:+kn eekw j) 6(g;2dnex*uyh gnt $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% efficie( *0 xjfim2wqancy. How much current does it draw from a 120-V lix i2jq a(*fw0mne? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source3)z b vqz2m rqar9i74e. What rms current flows thr74bvr3r qmq iaez 92)zough this device?

  A 500-W device is connected to a 120-V ac power source. What peak curred,ux -zpx5df 8nt flows througdu 5dfz-,x8p xh this device?

  A 500-W device is connected to a 12;b .b;u i*; vcjqrog;e0-V ac power source. What is the peak voltage acrogc* r;b;.;bo;jeui q vss this device?

  The diameter of a copper wire is 0.081 inch. The maximum safe current p1clz :sv0d+ hit can carry (in order to preventp 0 dsvlc1:hz+ fire danger in 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 $8.5 \times 10^{22}$.)