A device that produces electricity by transforming chemical energy into ele,jmw jx8nsr5 *ctricarms8jw, 5*jnxl energy is called a

  A car battery

  The total amount of charge that passes through a wire'.lwrti ec4c gi.2u3 4ds full cross section at any point per unit of time 3u t..gc iid4lcr4e 2wis referred to as

  The direction of convention cw.k0wmx 5vsb3 . x7vkyurrent is taken to be the direction that

  A coulomb per second is b 6.j2oped7kctlw(u2 j0u- fg the same as

  Car batteries are rated in "amp-hours." This is am-g58*j 9t8dwg( vgf1 tk5vkdg txv1 c measure of their

  The resistance of a u ycp9z7 k iov;3m;aw7wire is defined as

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

  The resistance of a wire c: 3wv;fnpmf(dd kda+6 ,fia8 is

  The resistivity of a wire de5xg0 p;)jv) ysk1y gagpends on

  Which conducting material has the lowestad( k3y +ubz +(i ,2ruhssst(a resistivity value?

  Consider two copper wires8.mi jw/mp1rk sp .ls0. One has twice the length of the other. How do the resistivities of these two w 8jsw/1is pml0.mp.kr ires compare?

  Consider two copper wires. One has twice the length of the other. How do the 5ai* f:qdun-vresistances of these two wires i vq:n-*a5ufdcompare?

  Consider two copper wires. One has twice the cross-sectional area of t/q 3gvgqse40b f/ /ijjhe other. How do the resistances of these t0 fg/v3eqjgj b4/i/ qswo wires compare?

  Consider two copper wires. One has twicazwr: nwaxdq1;y*8. a jcj(/ oe the length and twice the cross-sectional area of the other. How do the resix ;oday a(*zjaw: / cr81.wjqnstances of these two wires compare?

  The length of a wire is doublgu5v,l ;o;k4yx e my,led and the radius is doubled. By what factor does thelgxm;;4u,5kvy yol ,e resistance change?

  How much more resistance does a 1.0 cm diameter rod have compared m4)oafx:hcwfj r-l 0h7uv9.uto a 2.0 cm diameter rod of the same length and made of the same materialfw0 lr.:9omavxchj4u- )f7h u ?

  The resistivity of mostnypy bhw85 8qpi6es+2yu 7bkf6s:wy . common metals

  Negative temperature coefru iap0er2qt91/ti ,mficients of resistivity

  What is 1 W equivalent se 3tw ,w v-x0hkze60qhvuq34to?

  A kilowatt-hour is equiv1iztx.-u /om-dyynm: alent to

  If the resistance in a constant voltage circuit is;v/v (fcmky,0hu x*u k doubled, the power dissipated by thatv(uxk;*0hk,/ mvcu fy circuit will

  If the voltage across a circuit of constant resistance is doubled, the power ,9) qsx4x ds-:pg zuh+avon1ydissip 9 q xp)h,ssoxazvu+g:dy4 n-1ated by that circuit will

  If the resistance in a circuit with constant cu3f 1kn*cu nv8grrent flowing is doubled, the power dissipated by that circuit ugnn8c3 1fkv* will

  If the current flowing through a circuit of constant resistance is ct : 847rifvla+ud2wz doubled, the power dissipated by tha d wl82uti+7ca4fzr:vt circuit will

  During a power demand, the voltage output is reducex9* bz*prdrv; d by 5.0%. By what percentage is the power on a pdr**9rvbx ; zresistor affected?

  A current that is sinusoidal with respect to timed6o+zud62s thhy6 pm + is referred to as

  Consider two copper wires each cam-7lolte5 pzqk vz/er7 , g)*trrying a current of 3.0 A. One wire has twice the diameter of the other. The rativg,z5 7llket rpmo-/7 t)zqe* o of the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes ess x7e 2w(n gkxzuf;t5:zentially zero at very low temperatures are refer2n ufwx;7g 5k:t(xzezred to as

  What current is flowing if 0.67 C of chasiu59l bw 29cz qx6;ij5fzhy7 rge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating apparatus in 2r v7yqgv2k)5cs4m mi+ .0 min. What is the avg4k c5 2qvm7vrism +y)erage current?

  How much charge must pass by a point in 10 szd *nmw: ou 7;j3h7cmg 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 flowixq.m14dof w0 ang 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 current, a6dtqq wxjaq 8mdmm/c89c3-vic:l3 5 has been left on for 10 min. What is the net number of electrdcjx5cat 8 m8aqiq 3 :v3cml-6wd/ m9qons that have passed through the coffee maker?

  In an electroplating process, it is desired to deposit 40 mg of silverne0 ua )win52b on a metal part by using a current of 2.0 A. How long must the current)in2w5en 0b ua 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 required to cause 4.00 A ey-1hib/z0i mto flow through a resistance of i1zm/hb iy e0-330 W?

  What is the voltage across alp3- ;jja27vf ordz1m 5.0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What current 8xg;(7wq c cuswill flow?

  A light bulb operating at 110 V de( dj n*9v1wuh.nd9 bkraws 1.40 A of current. What is its resistancekh1.b*d 9u9wed nvjn (?

  A 12-V battery is connected to a 100-W resistor. How ft;z*vw)s.tb j,w 5e pmany electrons flow through the w,)w wfepbtjt5 .* svz;ire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? (Thwnoggo 39ys6tp 42y)l z3 j7xanai5 0ne resistivitynajol4a6 gso0t)i zp y2w7y93n5gnx 3 of copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circularl(rt-yei;5m*q m p:buln8 zf8 rod 1.0 cm in diameter and 45 m long, if the resistivity t;*y mn5pe z-f8lr8(l:b miquis $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resisah t+2oo h,sbgt 54sw9tivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistivity 6x,mogyeb jd1q gy5- trbp)v):g81a;op f (ih$1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, mdg 10e66eowhaeasures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m +uew4: 8 u ixz:pqozh*rwn-t/long 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. (The resistix*-:pziww/:r z4t+quehun8o vity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cross-section, 1.0 cm x 2.0)umx:e: rw/b qdd36d r cm. What is the voltage drop along its length when it carries 4000 A? (The resistivu /6x)3:rd:dmredb qwity 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 mm and a resisojrbm l .xm; uet-d)1lh.n0)-v zlo- htivity 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 (resis 1iwb+ e0gaxg,f wo2-btivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resistancci/zrk-s ,1 vve 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 resistfpqqt 9xx1z4xghi812mfoi4 h /9cl;x ivity 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 oz9*i 1403vjqpkb dz xmd -3mthf indium. The resistanck0i-t4* z vxm39zhbp mj3 dq1de of the 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 through.6iud*c bir3w 0drz85oosa; g an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 8itk3s3 )am+/g oa4io p yi-uqW. What current will it draw?

  A 150-W light bulb running on 1s fd2iz k5be,9s)bwc)10 V draws how much current?

  What is the nominal resistance of a 100-W lsg*2z1 mdtfhs 5l/ 8kdight bulb designed to be used in a 1208g/1d lzd fhs5sktm*2-V circuit?

  A toaster is rated 800 W at 120 V. What is the resistance of its heating elemen4qfox(7xo 4h4 ugso5wt4w4 o5g7hfo xou 4x(qs?

  A 200-W resistor is rauv35 o4t)*hu r xuuxnluc3;49dqhm n)ted at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is r q3lqyuohn7h2 5d i*i-0sq5pj rwr*,rated at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at. afb lh12ah9c 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 1206j2/w i8 gjmxv V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What is its resx0d, o 8).nud+pe ec2iew:;qr yog ir/ /wa:mlistance?

  How much does it cost to o,tfa*tiilt9 / perate a 25-W soldering iron for 8.0 hours, if energy costt, la *f/i9itts $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 hoursxiya.1l*ut 3n ?

  A 1500-W heater is connected to a 120-V line for 2.0 hop-aw /gs n/.r/ 9:ws:ycuvu auurs. How much heat energy is producedg/ns .r: wu:sa cv-u 9pa/uwy/?

  A battery is rated at 12 V and 160 A-h. How much energy dopv( 8y (bchfg1es the battery store?f(y8gc1bv p( h

  How much energy does a 25-W soldering iron sd 9gwu/0 tnxo22sh7s;0cq ry use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming the power cxkxzg(/e p:,rb+c(v xompany charges 10 cents for each kilowatt-hour of electricity used, estimatrp,(gk cvx+zb(/xe x :e the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turne:l;deg f,vzv9q5xd) ed on 8.0 hours per day. If electriq le,)g:d5dfvv; 9e xzcity costs 10 cents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of running a central air-*u0 sz+l 2by6kn+v4j jam te1.sgyt-lconditioning 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.gaynmuts24tyjl v+ l *-k+szej16b 0 uch 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 opa2mx2 -:qsrhierates on 240 V and generates heat at the rate of 2.1 kW.rq:x 2-sim2ha 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 dissipated in the heating element?

  14 A of current flows throu o xgl- 1rjx(d)q9f;0 5*tnw ;(by8otjitlmgzgh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs y7e--z gr,sqd ptpa*7$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 wos- 4hiijq l391- 5vy zipid,uaq8 zl5mrk at the rate of 2.0 hp has 60% efficiency. How much current does it draw p, zusdl-hij48ami5i3v1- q iq 9z5ly from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connectk68ooh*dig4 q ed to a 120-V ac power source. What rms current flows through this de4dg*ihk6qo 8ovice?

  A 500-W device is connected to a 120-V ac power source. What peak currh:5.i6 d m-jxy q9axdgent flows through this device iq9.mj5:dag-yhxd6 x?

  A 500-W device is connected to a 120-V ac power source. What is the peaayipr i-my5 l093qp2hk voltage across tha-him y0iyp p9ql 52r3is device?

  The diameter of a copq*ii7 yx*av: ,(xn d ruo/je*;d,rxndper 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 y7r;o ,ai (x*nre:dxnj /q*did *,u vxdrift velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)