A device that produces electricity by transforming chemical energy into electricky2(t+y u7oml8j d:knal energy id(kl 2k 8tn+jy:y7mous called a

  A car battery

  The total amount of charge that passes through a wire's full crosm 0q(o 7f8w2mc kjp2kws section at any point per unit of time is referred to as7cwk(fqjopw m2k 802 m

  The direction of convention current is taken to be the direction t b3h8a-zifaa0.wqx y)hat

  A coulomb per second is the st** y8vjzui )qxm8/kkame as

  Car batteries are rated in "amp-hourswi5llzpk+c)a0s83 x f ." This is a measure of their

  The resistance of a 8 oz+( n027 jnt lgplxgsn:kj:wire is defined as

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

  The resistance of a wire ip;w;w6wfyrull) b x1 1 7v-bbss

  The resistivity of a wire depen t*nq-*ff 3 x/5s4nvgnb1msri ds on

  Which conducting materiay7h ,v7i pn0/wzjzw1wl has the lowest resistivity value?

  Consider two copper wires. One has twice the length of t a gcsnjdwk ;ynqqy.; ,8*x)d3he other. How do the resistivi d*q3y wqgax,s j8yn. nkc;d);ties of these two wires compare?

  Consider two copper wires. One has tyox ugl0bxq 4t)9t f5lb/s008y1uohpwice the length of the other. How do the resistancet yq5o)boup 91lub lf 0y0/0g84hxstxs of these two wires compare?

  Consider two copper wires. One has twice the cross-sx;(v66 cawflwh: h4 arectional area of the other. How do the resistances o6vchr xwh( ;a6fla:4wf these two wires compare?

  Consider two copper wires. One has twice the length and twice t5 ,b/1: b osalol 2xwjd.1qzjjhe cross-sectional area of the other. How do the resistj.lb/o: j w1oj2xdsa z5lb, q1ances of these two wires compare?

  The length of a wire is doubled and the radius is doubled. By c6 8q -z wecf5qmd5u2g/ 17rs2mfnumhwhat factor does the resistance change6cf1s d/ u 8hq-72g rm25uzc5mnqfw me?

  How much more resistance does a 1.0 cm diameter rod he g;qj( rpg1x(ave compared to a 2.0 cm diameter rod of the same length and made of the same mage xjq;r1(gp(terial?

  The resistivity of most common metalfy- i3+q;-b9dc ykcxco 2lz)ee8m w 6ws

  Negative temperature coefficients of 8 2w vrb/v o1/r n-qax1;tjb2y8ncu xtresistivity

  What is 1 W equivalent t nxe(2:ayo(kpo?

  A kilowatt-hour is equivalent ts-xg n::pge t.o

  If the resistance in a constant kw:pjdikf 5 )w1kyxcp.(,4 ri voltage circuit is doubled, the power dissipated by that w(pd, k w)f:5yixkir.j41kpc circuit will

  If the voltage across a circuit of constzs ; k7 ty(7fmnc,.szlant resistance is doubled, the power dissipated by 7y (mcfn;zk7 tss.z,l that circuit will

  If the resistance in a circuit with constant current flowinncc5txn, wv+ q8dt+f0dk 9vgai 7sq+ oc3zq/0g is doubled, the power dissipated by that cir8 qqs0+t,axdgf+5 7cn v+dq9ownktcv/0z c i3 cuit will

  If the current flowing through a circuit of constant resistance is doubled, thelm;grbct10 *y power dissipated by that ciry0mbct ;rl*g1cuit will

  During a power demand, the voltage output is reduced by g4:y1j*y uhf5sd6ci j5.0%. By what percentage is thh5sd4yfc yg6* ji1u: je power on a resistor affected?

  A current that is sinusoidal with respect to time is referrm12ej)dr, af bed to as

  Consider two copper wires each carrying a curr7vwk9iugzd:z ay+ iiqvv 4( zwe9)o,*ent 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 diamy ,z+(:evk9i) z i4w*9vuwz v7daqigo eter wire is

  Materials in which the 1r;phz0*ia yiresistivity becomes essentially zero at very low temperatures aya*i i;hz0 p1rre referred to as

  What current is flowing if 0.67 C of charge pass a po +.kzfq2l s-zgosz1h1 int in 0.30 s?

  A charge of 12 C passes through an electroplating apparatus in 2.0 mifg4)kj06 d yvmn. What isfj6 4dgm0v ky) the average current?

  How much charge must pas 0yc 1ok9k6gctm+pcr( s by 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 flowm73ttqt f0rzs h6iu94ing 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 dg 3- ud*ir tfto)y-us0raws 13.5 A of current, has been left on for 10 min. What is the net number of electrons that have passed throug)y*o uu0g-ft -dit3sr h the coffee maker?

  In an electroplating process, it is desired to depy1)rqg+hy iy14gridp5mhu iq 35 / jj.osit 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 thi h4jyy 5h+imq/ p3yqigij11ru g5dr) .s much silver? (The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference i 6q3er kknsdp2j )n9h.s required to cause 4.00 A to flow through a resistancen9r 6hk).3djnkqs2e p of 330 W?

  What is the voltage across a 5.0-W resistor if the current throd8a;ttr1t al :l5wq ld* kjw ajc31j+3ugh it is 5.0 A?

  A 4000-W resistor is connected acrossy3nogw,ls sx8.* v:gv 220 V. What current will flow?

  A light bulb operating at 110 V draws 1.40 A of current. What vg 6lv6u 3ir ;s;osp1yis its resistance?ly61gi; ;6p suvsvo r3

  A 12-V battery is connected to a 100-W resistor. How many electrons flg 4h u9z g3ng3m+q-.q8mgmyvoow through the wireygmom nqh+3.-4q8uz 9vg3g gm in
1.0 min?

  What is the resistance of 1.0 m copper wire of oz 0a;t-8if/0e g vfjvdiameter 0.40 inch? (The resistivity of copper isv0i;toav8f0-/gfe jz $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistanmi) .hp3emmw 8ce of a circular rod 1.0 cm in diameter and 45 m long, if the res )8e3.h pimmwmistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of coppe 5zy+pgey)viq 63m t yb2p6b:ir wire (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 (resisti g;dgra4,p qg/)sso: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 long, mea-wt) uclu1s de9/*cygsures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10q /;fm ap ( mg68l,eud*vcz0hq.0-m long 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected to a clq(g*,;hfmqmav6 p/ u8z0de12.0-V battery. (The resistivity 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 cmp8qc(em6r9d /pw iu*djj8 z*1l8ybn g x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (The resistivity of copper i* jr8*wm 1plie6by/qc8j8 p9 d(gduzns $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire has a radius of 0.:7ffdar iq oph5av0 5(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 (resist2p ( odv xu:mhgpk/6*o;wf0gi ivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resiszf * ri;k7o,; zpsbngq.rny:m:x+(gv tance 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 resisti-f t77b0fx9vlk;m lhfvity 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. Th1l8gp g6 jwf ;y+d6chde resistance of the platinl6+fg6dhcgj ;d 8 y1wpum 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 xy1le7rtj-+z(u5)u4 h n l.zflw7yaph an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What cu kl(hr vecpk c.p5.2p1rrent will it draw?

  A 150-W light bulb running on 110 V draws hemy -1x0u52,v sp ataqow much current?

  What is the nominal resistance or (r-dgri5;a zn n+ce /l:upxk/tv1k-)/ sqeuf a 100-W light bulb designed to be used in a 120-V circ;r1ndz:+/-xsr - veu(qk//5 lpgkn)a ru tcieuit?

  A toaster is rated 800 W at 120 V. What is the rafy(syqn;xx.)1p 05hv+u qsbesistance of its heating elementb+;qxx 1hy0s q s5.yfa()vupn?

  A 200-W resistor is rateov7h/cte8r ; (mmqf6fd at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rate j )i: saq:/4.p:tftawd /.7wrneglacd at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is usedh*;pxm :p,t kmf+ulk+ at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is usehyrhfsb :no x-6; k(5jd at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What is its resistanujo. new. ;es,ce?

  How much does it cost to operate a 25-W soldering iron for 8.0 hour a; 1sf fx*xza15:rc;e2xhtyfmkr7:ls, if energy c*h1x;cyfmfk7;1 :5szfar2:rt xe xalosts $0.08/kWh?

  How much energy does a 100-W light bulb use dyhk; /tk*;- -ohhcsfin 8.0 hours?

  A 1500-W heater is com.vs4 qc48 dfx1 a q 8r,7q8agxj8ywlhnnected to a 120-V line for 2.0 hours. How much heat energy is prod g8aqdljy1 c8r,mhs478xv4.q8x af qwuced?

  A battery is rated at 12 V and 160 A-h. How much energy does the batte6 5 lg9lc/x7l*iefjv sry store?sl9 lgl 75xi/* evfj6c

  How much energy does a 25-W solder-t 6nh i/s)d wreczo4 ;v5q7hzing iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10g ua . nfost0r;c7vw+, hours per day. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimate the annu7onwgv .r f+su ac;0t,al cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hhz)s6rkn d:()orn .(j* ef3m0 wuzjpiours per day. If electricity costs 10 cents per kWh, how much does it cost to run the comnf.zs6jukirh d)m (re:jonpw)( 0z*3 puter annually?

  The monthly (30 days) electric bill included the cost of runnv1( /cpxfcld;z*d-ea/j/ a;i- hovkxing 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 cost of the monthly electric bill if eocjle1/-h;f*z ;(v ad /-cikpxxav /dlectricity costs 8.0 cents per kWh?

  The heating element in an electric drier operates on 240 V2 ok/ (*fe,wj vbst+fs and generates heat 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 on the power dissipated in fk,veb+s ws(fo/ *j2t the heating element?

  14 A of current flows y)ka5 jz0/ixrn k5he+ k9mki +through $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costp/.x ;hzpf. sgs $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 hpm.rgkg3ji zqdz5p1: , has 60% efficiency. How much current does it draw fromk.3 mgqg dpzz:ri ,1j5 a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connugrs q 1-;(bwrected to a 120-V ac power source. What rms current flows thro;-(sg1br qr wuugh this device?

  A 500-W device is connected ty-dc0 5*kdo ijo a 120-V ac power source. What peak current flows through this device? 5-ocid djy0*k

  A 500-W device is connected to a 120-V ac power source. What ixi ufq-f(3 4 +avmg08dh+p9sf/l os sfs the peak voltage acr93fs- if+ h as/0dpv+m s4g(o8ffxuql oss this device?

  The diameter of a copper wire is 0.081 inch. T4r h,wo pog+ bv.-4ew/ibt aps/v4ea7f29jur he maximum safe current it can carry (in order to prevent fire danger in building construction) is 20 A. At this cuohoeb.v- ta,/bip vgf j44+u/w24 9sw7prrae rrent, what is the drift velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)