A device that produces electricity by transforming che2.aj/yhag- msmical energy into electrical energy a j2yh.g-ma/ sis called a

  A car battery

  The total amount of charge that passes through a wire's fulxuc,lnlpdk)+m7gku v5o2556 1l8i pfl yl)n jl cross section at any point per n5yp25o7ku v8xp+f l,jgdim l1l5) nuclkl6 )unit of time is referred to as

  The direction of convention current is tre-0hquowd7 3:n pcd5aken to be the direction that

  A coulomb per second is thzg) o9iilz/ /p9hta )ve same as

  Car batteries are rated in "amp-ho fo,uuu/;n1 mhurs." This is a measure of their

  The resistance of a wire/o7.*y *n zuqh0kv9 qq0vjzpt is defined as

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

  The resistance of a /yb1- nx 5e uz-b2 7k xpnnuy+eai(v6mwire is

  The resistivity of aq- yeeay sf*-k60nhb 7 wire depends on

  Which conducting material has the lowest resistivity valuyt+ c9,1z9z 2f jktq7qdo(ddy e?

  Consider two copper wire* fii1, rw0yjwc+a s:ds. One has twice the length of the other. How do the resistid+ ,irjwi as fc*0:yw1vities of these two wires compare?

  Consider two copper wires. Oner-)06p7yn nkar l :rri has twice the length of the other. How do the resistanc )rl7r-y :nrkn0ip6ar es of these two wires compare?

  Consider two copper wires. One has twice the cross-sectioc twmfr: g1p9aigi 840hyu;e-nal area of the other. How do the resistances of these two wires t1 mcprgh-8wey9ugi 4ia: ;f0compare?

  Consider two copper wires. One has twice 1dg8kao+f dp) the length and twice the cross-sectional area of the other. How do the resistances of these two wires compareg+apd8 f1o )kd?

  The length of a wire is doubled and the radius is doubled. By what factorl8qn vl(h9:rmt3 x3wb does the resi9ql: x(t3r m3bnw vhl8stance change?

  How much more resistance does a 1.0 cm diameter rod have compar v0c7vnxa 6nb(ed to a 2.0 cm diameter rod of the same length and made of the same material xnncvv(a7 0b6?

  The resistivity of most common metm 5l,e* fw+ufd(+rtkyals

  Negative temperature coefficients of resisfikv1q0 xuk1h1,-vc ftivity

  What is 1 W equivalent to?5 jqyi8(oi9b qr,lvl .

  A kilowatt-hour is equivalent e +c66 wvw)sj 1c4umyeto

  If the resistance in a constant voltage circuit is doubled, the r2l(c m.8e+ yj yjemm)power dissipated by that cir .+jl2)ecmej(8rmm yy cuit will

  If the voltage across a circuit of constant resistance is doubled, the poweq+/- n 0u,hqse dyo6btv5ni 2sr dissinyq,/eq0d+o i s5u2 6htnvsb- pated by that circuit will

  If the resistance in a circuit with conie7 pntweo nbp57:9a+o b.r(n stant current flowing is doubled, the power dissipatedoe7np9w+pr o(nt7ai5:b. n eb by that circuit will

  If the current flowing through a circuit of sb/dwdy m3ddq10 zt 0a y):qf5constant resistance is doubled, the power dissipated by that ciqwd1dd3/0qd sfz 0tby amy5):rcuit will

  During a power demand, the voltage output is redusr6 )d*yfqt,vvmws + 6ced by 5.0%. By what percentage is the p+f*6ts ym,6d)swr vv qower on a resistor affected?

  A current that is sinusoidal with respect to time is lz-k:d3opy0*bb-w5kdgwu 4b referred to as

  Consider two copper wires each carrying a current of ed5gp f-fabvk8en9/ ; 3.0 A. One wire has twice the diameter of the other. a/ke8fpd-ge 5;v9b fn The ratio of the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the roi5phyp5 6 r3eesistivity becomes essentially zero at very low temperatures are referred tooi5 yhr pp3e65 as

  What current is flowinvhq mte;m3/mf/)o h+l5wi/uag if 0.67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating apparatus in 2.0 min. What4ld5g.a3ld ms odi(a, is the ave5,io.lmads adgdl (43rage current?

  How much charge must pass by a point in 10 s for the current to be 0.503rhhdni7d8 5 b10tpky 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 iqzqhti:5l g -8f $4.0 \times 10^{16} \; electrons$ 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, nxz4x yl9e(8 xhas been left on for 10 min. What is the net numbexz94l8e (xnyx r of electrons that have passed through the coffee maker?

  In an electroplating process, it is desire47i yg8oo5*pmn mg r+6zx) vshd 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 depositomnxgmyg 5p v648 szr7)oi *+h this much silver? (The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference is requ3 uq*v+w orlph8kc+;rired to cause 4.00 A to flow through a resistance c o* q;3hp8kv u+wlr+rof 330 W?

  What is the voltage across a(vki2qs tzy+n7f86po 5.0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What c)5jm5pu* q-d7mv fsxc;+ lyzq urrent will flow?

  A light bulb operating azz/;c) sci f4*whw ;apt 110 V draws 1.40 A of current. What is its resistance sahw4;z*w fz ci;p)c/?

  A 12-V battery is connected to otxwmyn qs6ppoxv 197n n /20e3n4m :qa 100-W resistor. How many electrons flow through the wire0sm:7mq9py6 qnw nn34 1t e/on2 voxpx in
1.0 min?

  What is the resistance of sajuzw 68wyzz q+hg6c5 -zjurn-;20xj6t ae+ 1.0 m copper wire of diameter 0.40 inch? (The resistivity of copper is j;r +t zc qw jn-5sy +6u8gauwj0exa2 zzz6h6-$1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0+ohp 4,sxr* g1udiq;ya a n+4 io3d:wshvn-- q cm in diameter and 45 m long, if the resistivity sg-i q nyd4pv n*h3+w aah,oxsq; -odr:1u4+i is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire v-4i+en)zi0nj dh3 z sav(2lq(resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistivit1lra.7g +coivoo98) x k9bouly $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, measures 0.0o z0 ap: d8g-yitvb(q) ic;v4s40 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gaugen c3v rry6kf p9*xs;q,l2q lh7 (the radius is 0.321 mm) nichrome wire if it is cops 96l, rvlrfcqq*x 2;hy7 3knnnected to a 12.0-V battery. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 2d)k mc-dfq6 g(owc7p,0 cm long and of rectangular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop k(-dp 7,d)w cqo6fcmg 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 has a radius of 0.50 mm(qe9 xm*ts/hzgwta(3lqk u ,uu0-ii .pgme9 . 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 (resis ;e8cqz3ycif+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 oiy1vu.1i dl j7-ci3iresistance 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 res1l ;foshn of2,istivity 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 zol5( 6 3kaclqof indium. The resistance of thezlqlk (536oac 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 throug.r(5l6zh*bq: m pvqxgh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 120l/ totw2u,wr+ eiqp7srq/vl+/d sjz9 6)g*hp 0 W. What current will it draw?

  A 150-W light bulb running on 110 V draw o2qt,om0g*c0a svh 8xs how much current?

  What is the nominal regmz :o,0nr ad8sistance of a 100-W light bulb designed to be used in a 120-V cirg a 0:,zomrn8dcuit?

  A toaster is rated 800 W at 120 V. What is the resistance of its heating ele hlg2m- 2k0af nua g3..kya:spment?n a20:kk-fhal mgp yas.u3g 2.

  A 200-W resistor is rated uy 78k/2obx (jccf6rfat $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is r3qnk4kenlz7-* f- wqkated at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. o*lec7w nzbn;ii, -t(wj t93v If it is used at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, what is itt,* 5b b+qxrto3 t* .fxoum,lfs resistance?

  A 25-W soldering iron runs on 110 V. What hs ,5vq3bssym0a3v*af,m: z his its resistance?

  How much does it cost to o5d73wfoowz,(icwirn (a oe19 perate a 25-W soldering iron for 8.0 hours, if energy ,(e3io (9o1oz7idwf nrac5ww costs $0.08/kWh?

  How much energy does appnm)9.x-v fm 100-W light bulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. +j9+b5 it8csy4,gtklf7i hxb How much heat energy tc4h bb 5i8x ,7if+tjksgl+y 9is produced?

  A battery is rated at 12 V and 160 A-h. How much ener0g *21wjrb qa. qydhq x9(h(nmgy does the battery store?yw*h.n1adq09m2gh(q ( bqx jr

  How much energy does a 25-W sol:xg) iy6budd)+q 8cyzdi r+m -efmc.76 r+dxp dering iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assum l2/qd dc8of)e0of1shp z (:sbing the power company charges 10 cents for each kilowatt-hour of electricity used, estimate the annualqb p0 def2(lh: /o s1osdz8)fc cost to operate the bulb.

  A 400-W computer (computer plus monitoijf9x .:m6voi wg,8vm r) is turned on 8.0 hours per day. If electric mwigj8v,i:fvm . o9x6ity costs 10 cents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill ihq,li/4bbl t m0kayhra6 /2 p;ncluded the cost of running a central air-conditioning ubh0/4ql2tpm l a i;bkhy,r/6 anit 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 contribute to the cost of the monthly electric bill if electricity costs 8.0 cents per kWh?

  The heating element in an electric 6737vk7t u 5co: j8lczvvkw -fgoj2padrier operates on 240 V and generates heat at the rate of 2.1 kW. The heating element shorts out and, in repairing it, the owner shortz lk 2ofjpv7vtc36jwkc7a 5 ou-v 8g7:ens 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 tuzsf:ez:r,1 vzvz .5 bhrough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costkg qpg);:we-q; p7x1jnx -tac s $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 wore- k8l oqvb,0 yn bc4z,t8e0zhk at the rate of 2.0 hp has 60% efficiency. How much current does it draw from a 12e0,-8cqybzt n k z4vbe,o8l h00-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected;lyrpbi ngm:1i, 7 (s3nxx9cg to a 120-V ac power source. What rms current flows through this; x91nsp,nc igrm:i(xl3 7y gb device?

  A 500-W device is connected to a 120-V ac potrz 7:+ml6cll,lyp .hwer source. What peak current flows through this device?r7mh lt:p lly6+,lcz.

  A 500-W device is connected to a; kay5ps8ej4 v 120-V ac power source. What is the peak voltage across thayp ;5 k8e4vjsis device?

  The diameter of a copper wire is 0.081 inch. The maximum safe cury+ik w. ij:51zj;8lf4elo w ffrent it can carry (in order to prevent fire dafi5fwjlf o8 1e.zw yj 4k+;l:inger 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 $8.5 \times 10^{22}$.)