A device that produces electricity by transforming cuf:4c i r:0dwcc:ohw0 hemical energy into electrical en:: h0drc4icw0 :fc owuergy is called a

  A car battery

  The total amount of charge that passes throui*(zw, 4x. +kcatxqgb gh a wire's full cross section at any point per unit of time is referred*k.wig cx 4x(qbz+, at to as

  The direction of convention current is taken to cd20sqv2 .w5 *ookx 5z xu j*yrdml+e*be the direction that

  A coulomb per second is ,azyzraa(,eqp 3jxzr z.2* 8 rthe same as

  Car batteries are rated in "amp-hours." This is a measure of th 5g3(bvo /kyim( hvh)deir

  The resistance of a wire is y/7 glfh5o*w fdefined as

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

  The resistance of a wireqt 7 cci82 oum i8g0icn;b7z)k is

  The resistivity of a wire depsd ycuv.gvv b j*j1.rauo m*et 1v5:(.ends on

  Which conducting materialk8 oi gk1z.sm* has the lowest resistivity value?

  Consider two copper wires. ywtqwg,i7 *ilwa+hv9ed u 7, . One has twice the length of the other. How do the resistivities of these twoa,.uw9ih,qd+tw elyg7vwi *7 wires compare?

  Consider two copper wire0wdf )-y7qi9 )oeis2j6+f;m gfqk tjfs. One has twice the length of the other. How do the resistances of these two wires compare?2fw-dmes0gj+i)) fqqotf79i 6y kf;j

  Consider two copper wires. One has twice the cross-secz:// qrnw+hdb p ef0k9tional area of the other. k9ed0:/wzn fbpqh +r/ How do the resistances of these two wires compare?

  Consider two copper wires. One has twice the length and twice the cross-s2khr 1gn ca3cl0 r1p5yectional area of the other. How do the 1ryc5ch0 pk2l grn1a3resistances of these two wires compare?

  The length of a wire is dotq uo1 gfj92v)b*4;pztk j:f subled and the radius is doubled. By what factor does th1v o:ub9tpt*fjjz 4sg;)2 fqk e resistance change?

  How much more resistance does a 1.0 cm diameter rod have compared to a 2.0 cmw)felxs ( c9w*y83cjc diameter r)cc 9wec xjwy8f(ls3* od of the same length and made of the same material?

  The resistivity of most rf8uh2gu0us/common metals

  Negative temperature coe/x7x;70/juqqrjj4omqw p(f d hra:r2 fficients of resistivity

  What is 1 W equivalent ftatx5o0in5 u -- nv86xyf .coj.m9 rmto?

  A kilowatt-hour is equivalentin-m4iw 0htl6 dwf.4zxjyc: 7 to

  If the resistance in a constant voltage circuit is doubled, th pt513f0tgdk0 yhasmr4xf(:d e power dissipated by that cid3m0ktaf p( ysrf0 4:xd1g5 htrcuit will

  If the voltage across a circuia+/ uwz63wkz 6rdux /zt of constant resistance is doubled, the power dissipatxd/ 6 w3urk z+/wz6zuaed by that circuit will

  If the resistance in a circuit with constant current floy,a1n)jm gz*pl6hmn: wing is doubled, the power dissipated by that p1la:,hj mg n )6*ymnzcircuit will

  If the current flowing through a circuit of constant resistancboot,5,n ruh/x1,arbe is doubled, the power disna/o,bbo , tu5 ,hr1rxsipated by that circuit will

  During a power demand, t6 nfedi jwfo:(*xp k;4he voltage output is reduced by 5.0%. By what percentage is thi*;o:ef pfk j4d xn6w(e power on a resistor affected?

  A current that is sinusoidal withr* m8d/5a-kiot o)rxk respect to time is referred to as

  Consider two copper wires each carrying a current of 3.0 A. One wir,,b.1 ( ugnp mm ac0d-wngicw3e has twice the diameter of the other. The ratio of the drift velocicnnmugw3bc-,gaw i (0m.1 ,dpty in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistiv3 xdct6xo7z1jkah .8pity becomes essentially zero at very low temperatures are re 1to78x xda3j6pzh.c kferred to as

  What current is flowing if 0.67 C of charge pass a point in 0.nr7 u- ;utny**u6zujsi3o f 0d30 s?

  A charge of 12 C passes through an ,u;2i7f wn yrz8)uef felectroplating apparatus in 2.0 min. What is the uif,we r7;ny z )f82ufaverage current?

  How much charge must pass br/ktsm 0 r8xg: 14prxfy a point 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 )s2xamzck(k($4.0 \times 10^{16} \; electrons$ 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 . ddk.ubi av54fdrj46ue4nf; . .dnrgof current, has been left on for 10 min. What is the net number of electrons that han 5av.rnefd.dig4r.d4. b4fuud 6k ;jve passed through the coffee maker?

  In an electroplating process, it is desired daac 108 i1:7tux)jj3y9uem/ehokt g to deposit 40 mg of silver on a metal part by using a current of 2.0 A. How li)tdx7 9mo:ek u8c0 3yjgjau1e /aht1ong must the current be allowed to run to deposit this much silver? (The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference is requirez w6 0eav) +qm -:tvb8l6mm+evg oy7vam p(1und to cause 4.00 A to flow through a resistance o01veb6 l8n+zmma:+mw op m) ueq(- g avvt6y7vf 330 W?

  What is the voltage acroszbtt1a 9i;h-g s a 5.0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What current will n/(xcj vw1 hf3flow?

  A light bulb operating at 110 V draws 1.40 A of current. What is its resistanf;g++i7vpwd -(k gikmcem+ pi7w- gi;v(fgkk +d?

  A 12-V battery is connected to a 100-W resistor. How many electroc :3tbkq7 l+07yyvv n (/d1*xqvypmomns flow through the vb3 q:x0dp *(/nvym+tkloq7 1cvmyy7 wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.)+f hv5am-/fgk*/h1l k9pvj bol/s ew40 inch? (The resistivity of cop*kf+ lp/ lb /9wfahh51 ek)mjvs-/ogvper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm ig9v, 7zkc7d5ki4n7 p/uneqg tn diameter and 45 m long, if the resistivityp4iq,97ned7 v tngg57ukck/z is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resistee9 (lz nrc7xrwc 772nivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistq iejnkplc./t)7i h7p h8 l)fgvkw. /*ivity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m *5gpsk7 d 7bdklong, measures 0.040 ohms. What is its resistivity?

  Calculate the current nvmd2 cy3qyf5 cm,r, m1ed ;f9through a 10.0-m long 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-cm; m5y,fe2dvfq31n ,dmrc 9yV battery. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 2unoe -8kffd380 cm long and of rectangular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its 8 edff3- 8unkolength 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 has a radius of 0.50 m ms8)x.n69s6 vgyud g((yckwum 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 (resisti pttmp0p8o 2b(vity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resist0*uxgx5-jd3fs2xku1 c zfvgin52 0ax ance 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 resistivij: xh5lljka(83ilcv)x5e t k d, 8:evety 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 indiu45br4ubdx )nb s:+w:tp 5jc kwm. The resistance of the platinum wirejs: b4xwk5u+tw bbrp) dnc54 : 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 an 6 k ky:g6;odwdn;8gbo$10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current wi mw mxj.rf9 ;e,qt687qi.fbvill it draw?

  A 150-W light bulb running on 110 V draws how much current?8qr f;0; eub r8ksh*go

  What is the nominal resistance of a 100-W light bulb de cwe5 .b- 77t1gkxd fzcyq;j4lsigned to be used in a 120-V circuig j-;7zwflb5.tqc 7xd4 ce y1kt?

  A toaster is rated 800 W at 120 V. mxwey67g m8 does6u(k(1y k9p What is the resistance of its heating elemenpkey 8kx7m(u6ged1owm6 (y s9t?

  A 200-W resistor is rajs kzah 2cxvdhuolo0q ,2/bh-9q12 m;ted at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated lnmd pnsxd:3eos4 u ()r68 7y(yfs hb)at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what j-fcn(pdvh 3h4b/w8 h current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, whate3root2 k6l+5xha 09x oln ;ff is its resistance?

  A 25-W soldering iron ag,3,dyp 2a ntm/0la mruns on 110 V. What is its resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0 hours*lsd73t7;n.dns o dofpf: .gf, if energy co 3dlds77f sfot.*fdng;op. :nsts $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 h zv7+),+ixt7hkons* stsxg y )ours?

  A 1500-W heater is connected to naz6 +skbv3: +knri;j a 120-V line for 2.0 hours. How much heat energy is p:kv6+3kzsrai jb+ ;nn roduced?

  A battery is rated at 12 Vx0j.r u4s ;iuh68l6dk2bj.v ao3lu ud and 160 A-h. How much energy does the battery store?uhiv4.ao l8j3d;ux jk2dubrs. l 066 u

  How much energy does a 25-W soldering iron use in he7 negz 0uqj1c-./pi 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming the power compgvdoqn bvl, .u+ *(g:wany charges 10 cents for each kilowatt-houw (+.qv* lgdun:bvgo,r of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned c,++eb/ ay6 /*tm7nkpddt rmson 8.0 hours per day. If electricity costs 10 cents per kWh, how much doese rmnbp,/ t */y+stcd+76makd it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of running a central air-r u)krphrw204kn 0 lt+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. h4+rn 020 wr p)rklutkHow 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 on 240 V 8z8szir u7.mpc4/zgl and generates heat at the rate of 2.1 kW. The heating element shorts out and, in repairing it, the owner shor mzlg.pzi 8u4 /cr7zs8tens 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 throughigwsiao(hr)5, m bx,ad4b14.z-tp t r $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costswfq:ib)zh; rvv f1pc3 v3.h6 fmv n)n7pf(q 3k $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 o0m c2uy/req -th-ku8iy9zb7i i4u. ouf 2.0 hp has 60% efficiency. How much current does it draw from a yei8-b7 r4z/ 2cy 9ui humu.o-ku0tqi 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac pow/clca,7 +mam2,:p khxjx), wqwzwx e(er source. What rms current flows through this hjcckqx w7w 2m:(,xzp,e)wax,a/ +m ldevice?

  A 500-W device is connected to a 120-V ac power source. What peak current ff/g 8wui/hdpj*cg*+olows through this fj8gig*w //h* oupc+ ddevice?

  A 500-W device is connected to a 120-V ac power source. Whatm bum+8g9ou) b is the peak voltage across g9u+)mbu 8 bomthis device?

  The diameter of a copper w -wkxz+ ag js;1.j)rgaire 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 th-1 jjk.+aags; wr xg)ze drift velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)