A device that produces electricity by /8xb06d 0h7kyg :xw c+zhs mqjyh)gg 2transforming chemical energy into electrical energgbh60:2mky)/hs0 zgdg cx7+x hyjqw 8y is called a

  A car battery

  The total amount of charge that passe,p3r h z /89rhtw s70txrav7dms through a wire's full cross section at any point per unit of timr/ w7xt8rv9r hpasmh 7z 3d,0te is referred to as

  The direction of convention current is taken to be the direction that:bz: woqjv9 .vl)cj7wwiy/ u6

  A coulomb per second is the same aso x+p:v ct*ay.

  Car batteries are rated in "amp-hours." This is a meas 0q2n( 5-rbytwx9 occ/)yl0 mivyo9uc ure of their

  The resistance of a wire is definedl+ h)h7fi)r0z f p,(t4kkteg2uqyg ,n as

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

  The resistance of a w(j6 xk2 j0vr*eoc5mf(cl mzx8 ire is

  The resistivity of a wire depend/.q/ec8 eighqpio* ( :6exzo rs on

  Which conducting materiit ;71 sbxh;dhal has the lowest resistivity value?

  Consider two copper wires. One has twice the length of the other. How do thw,i8zqzfv-a) e resistivw 8,zai)-qvz fities of these two wires compare?

  Consider two copper wires. One has twice the.j umy8 hdjh6 y:z09l zn8b+ds length of the other. How do the resistances of these two wires compmzy jh86y0d jz+b:8 sd9 nulh.are?

  Consider two copper wires. Onex:1,d tdvlkj kt1-g f um5(9ak has twice the cross-sectional area of the other. How do the resistances of thesek(a,11kv l fdk x:-9t5mgu dtj two wires compare?

  Consider two copper wires. O:jo.la+p. h ffy74m inne has twice the length and twice the cross-sectional area of tjoy+4hf 7la.n:.p fi mhe other. How do the resistances of these two wires compare?

  The length of a wire is doubled anrz,ty5fmw g c7k::p(cd the radius is doubled. By what factor does the resistan tczg:y5k:cm7wp(, rfce change?

  How much more resistance does a 1.0 cm diameter rod hav9i6er 1m yafm5h7mbbgr:eblu3n5;06g7 uzio e compared to a 2.0 cm diameter rod of the samegmzm;7hr5b51u r neyibe7396 bi :m6glu o0 fa length and made of the same material?

  The resistivity of most common metalssof,1lo3hpe,r uq c0m7zrm *kyz /;5r

  Negative temperature ct4 77eo uva9lag366rf 0deflnoefficients of resistivity

  What is 1 W equivalent tbg b0ahibi; yvox( -v ac(q,,:o?

  A kilowatt-hour is equiva (txv1 y:qdqe ,2uspj/lent to

  If the resistance in a constant voltage circuit is doubled, the power diss;8nfs* oanl- xd ;:rejipated by that circuit-x:8n;nsa l*erdj;f o will

  If the voltage across a/pvg8it7bw-db -pk u: circuit of constant resistance is doubled, the power dissipd7k:-bgu8vi -bt p /pwated by that circuit will

  If the resistance in a circuit with constant curre-3c aq h;5:otq. krpnjnt flowing is doubled, the power dissipated by that circuit willqhp;oq rc5n-3tjk.: a

  If the current flowing through a circuit o132mxb awvuuzumr*( +f constant resistance is doubled, the buwmv zu12m (*xu+r3apower dissipated by that circuit will

  During a power demand, the voltage outppow oc d i2b)dl4o4vk9v zd(lw 5888nfut is reduced by 5.0%. By what percentage is the power on a resistvo ci(l8npo94) db8dwd v wf lo4825kzor affected?

  A current that is sinusoidal with resp qy4)ejam )o/, 1*+k.tpgrebr o.qotfect to time is referred to as

  Consider two copper wird 4 b 6z5i7xr01 ewny8z(l+qjqqngtd 5es each carrying a current of 3.0 A. One wire has twice the diameter of the otheqiy+4t7bzl50q (grn qz 8jwn6x1d5e dr. The ratio of the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity beco4.-4 ub ord2kkr a0o6yvfzfyp)s*q*pmes essentially zero at very low temperatures are refezo da0p f*fr6 )s2bkpkuy4qr v4*.oy-rred to as

  What current is flowing ir.n+tg72a8 muigl z1z f 0.67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes through an elemsc uk q;jvvu :3x:y +hev50f1ctroplating apparatus in 2.0 min. What is the average curreu1xfv y 5;m:kec3uvh+s0jqv:nt?

  How much charge must pass by a point in 10 s for o 4l8jl4lw .vr*k,sya 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 pu)9j;h /h5zkf2d qog$4.0 \times 10^{16} \; electrons$ 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 )pnj7 dp+cn59af c, ahbeen left on for 10 min. What is the net number of electr7p +ap5)acj,nf cndh9 ons that have passed through the coffee maker?

  In an electroplating process, it is desired to dil7x ;.0)fvmmwvz/ jgeposit 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 silver? (The silver ions are singly charged, and the atomic weigf vg7 .0)v lj/mi;zmxwht of silver is 108.)

  What potential difference is required to cause 4j q2e 8ykywvsz)o8(0s.00 A to flow through a resistance0)evw8q zoks sj(8y2 y of 330 W?

  What is the voltage across a 5.0-W resistor if the wsd9 gork smdc,0(q/+ current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. cdt* ot7 8k35qtkuqm.What current will flow?

  A light bulb operating at 110 V draws 1.40 iftr +1sla h.er *nr;idy,d 1pdo7vq096ot(o A of current. What is its resistance? hf7 ios1;. od, d r*qaet lo6nt0d9i(+1vyrrp

  A 12-V battery is connected to a 100-W resistor. How7 hzlqypvh pc(k.1u.. many electrons flow through 1p 7l hp(k.hycqu v..zthe wire in
1.0 min?

  What is the resistancek9jsiprb, /y54bt/hhy/ 9swn of 1.0 m copper wire of diameter 0.40 inch? (The resistivity w n/sb/thps/r9 k549,jh y biyof copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diameter and .wj3rb4e.qy g 45 m long, if the resistivity .we.gy4brq3 j is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resist xo d) ,mqo9-s6qgzv8givity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wictd ;7.g3i-ojim*mo h*1 z ppgre (resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 ohms. What is qgj3r8req+ uxq c4a gk*:06fw its resistivity?

  Calculate the current through a 10.0-m long r7ydw:v. ek ply3ie3.22 gauge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. (The resistivity of nichrk ve.pwd:ly7.r3i3ye ome 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 cm(g5hhlnd )qtb,+o1y a 8 u;mn8j/zkpw. What is the voltage drop along its length when it carries 4000 A? (The resistivity of copper iqnhhwp gz 1k(otm, 5n +day)lj 8;ub/8s $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire has a radius of 0.50 mm s f(w -:v;f18mb m /dplgw3nqzand 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 (resslynl/.3pcqirf 7 f- ie:f/v:istivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resbbyy b *; t5) uh(07fqhhnaf2pistance 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 resistivity of platinum p7 k 2u-6zan2q1g ipr*w,g wstis $3.9 \times 10^{-3} /^{\circ}C$. 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 melti1 tt.kyh*lah vj o;20fng point of indium. The resistance of the platin ;2*lvk a. jth01htyfoum 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 thrqtsarbh 7ns xi9*1h,6ough an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rq dx6*yyv2mcls n85 6yated at 1200 W. What current will it draw?

  A 150-W light bulb running on 110 V draws how mu(p5txq0 :m ktchpqp(.ch current?

  What is the nominal resistance of a 100-W light bulb designed to be used in a 1ekcx8k4 vjozzz;3 .i/20-V circuive i x.z3o;8k/ kj4zczt?

  A toaster is rated 800 W at 120 V. What is the resistance of ito(xfave w4,su*c d 2)vs heating element?v()vxd u*co4ef2,saw

  A 200-W resistor is rate p/ttk)-uw idqzdo921k ov-0gd at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated azc n( i71oicy+t $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, whatyr z9fm;e fh:n c)t9j* current does it draw?

  A lamp uses a 150-W bulb. If it is d sn+2 + moa(1ega7jvcused at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110p -*n6jrkn0np V. What is its resistance?

  How much does it cost to operate a 25-W soldering iron f+ach:+ 3f e s;p8 3ars5rbb+4jmnzpkqor 8.0 hours, if energy cost+p8s5ma3r +asbj + 34cqnpb:hk f;ezrs $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.yhcf xt)cuih7 mc rk*.u (205k0 hours?

  A 1500-W heater is connectedak+d;w 7nhetimql+- h0qq1fz 4f d-j(hx1 n6 y to a 120-V line for 2.0 hours. How much heat energy is -+7w+f;jh-mfnqe 6 1 0dkhy(laxzqdt h4iq1nproduced?

  A battery is rated at 12 V and 160 A-h. How much xcc dv.j4e1pc+ n hs+*g 43beienergy does the battery store?g.j +3bhcvs4ied+x ce4p* cn 1

  How much energy does a 25- k+7 sqtsoygo 6ffa(enqqt;.,3n,i.n W soldering iron use in 8.0 hours?

  A 100-W driveway light bulb is m8a,cd tg/ tp6on 10 hours per day. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost,ca6 gdpt8m/ t to operate the bulb.

  A 400-W computer (computer plus monitor) is turnt q /:8ki*.lcj:+ys qpse3fsfed on 8.0 hours per day. If electricity costs 10l:.j/t8: sq +s*kics pq3fyfe cents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included thjpg h6)lb1cr9 uu2rddn1 f3*erj :a(fe 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 contribute to the c d1:u* a12 )jj rrpdr6ul9cgh(bn3 ffeost 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 generates heat.dux67zca asmlv +k(. 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 cvda+7ml.x6as .zu (k on the power dissipated in the heating element?

  14 A of current flows thrf*6m1luictcqe;ad0 : e:6se g 2iw 3pdough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costsjs aiwx0a jyrf; /,y8*zh44 fc $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% efficiency. How mucv df3a1zp7u25 p8debfh current does it draw from8p15 b3 vf7dzd aeuf2p a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V anlg ax7c0egb:; y9n;w(bvq/r c power source. What rms current flows through this device?lybn7q0r(w:nag xbvcg; 9e /;

  A 500-W device is conxy xl y8 cnlbb+8 l9z-jd.v/x2nected to a 120-V ac power source. What peak current flows through this device?8b b9dnl. 8-x2xy +xy jz/lclv

  A 500-W device is connected to a 120-V ac power source. What is the peak voa b ku b5l/qdx.2tf dqe kedvz92.*)c;ltage acros.ba 9*u; /k.q ) lfkz2deb qdxdevtc52s this device?

  The diameter of a copper wire is 0.081 inch. The maximum safe ked h.mo c)1r fse*e/7 7ppf1rcurrent it can carry (in order to prevent fire danger in building construction) is 20 A. At this current, what is the drift velocity of the electrons? (The.m h fe*s )rce1 rk/d1f77oppe number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)