16.09: In the circuit shown, an electric cu2kiytk ,q5gd g c;a/k.rrent exists in the metal resistor connected to the battery. Which one of the k/ k2kgdy,c it5.agq;following choices best describes the direction of electron flow through the resistor and the direction of the electric field through the interior of the resistor?

  98.06: When any four resistors are connected in pf tjv(-ov7blfr/;5g-e-a5vkgwv t 9m arallel, the_________each resistor j vmvfgwtk(;rlav 5o-/5g7 ev -tb-9fis the same.

  06.33: A current through the thg/ 5sd .h0pxy3dbz1 ytin filament wire of a lightbulb causes the filament to become white hot, while the larger wires connected to the lightbulb remain much cooler. This happeb p /1dsygd 0.xhtz5y3ns because

  13.08: Some standard household lir;49 h 54ey .u1i; cjlqdiayozghts are being replaced with LEDs. LED is the acronym for w yzeh4i;a l yiu;.5q9j4dc 1orhich one of the following choices?

  05.16: A cylindrical graphite resistor has length,4+ydf bz9u)9cag geb L and cross-sectional area A. It is to be placed into a circuit, but it first must be cut +9,9fbad )4gzycbeguin half so that the new length is 1/2 L. What is the ratio of the new resistivity to the old resistivity of the cylindrical resistor?

  98.20: Wire I and wire II are made of the same material. Wire II has leb1 4kveghxx)m j*:sdx : d9)twice the diameter and twice the length of I. If I has resistance R, II has 91 :dd)hb :v 4* kx)ejslxgmxeresistance

  99.31: Wire Y is made of the same material but has twice d:,j(ap 2 xs.0dwmqgtkef +-k the diameter and half the length of wire X.20 fjd ,k:. semk+wxd (qpta-g If wire X has a resistance of R then wire Y would have a resistance of

  03.23: A cylindrical resistor has length L and rad z26rdzs7w-v9sxa za* ius r. This piece of material is then drawn so that it is a cylinder with new length 2L. What happens to the resistance of this material because of thi xzaadzss9r*6zw27v -s process?

  07.27: A junior Thomas Edison wants to make a brighter light bulb. Hel8v02oz0.t cnlekq m-* az/hk decides to modify the filament. How should the filament of a lightbulb b0tk0lhonc zeqak.vl *2m-/z 8e modified in order to make the lightbulb produce more light at a given voltage?

  16.07: Three cylindrical resisto6rk( de )ocab 0/.ayfat5kd ,drs are made of the same material. The length and radius of each resistor dcdob 0y(e, ad/fr k.5ta6a)kis:
Resistor 1: Length L, radius r
Resistor 2: Length L/2,radius r/2
Resistor 3: Length L/4,radius r/2
Which one of the following choices correctly ranks the resistance of these resistors (R1,R2,R3)?

  13.22: Four resistors, each of resij7xd9am+10r;cv0q5qbglp w v stance R, are connected to a battery in the following way: “Two resistors are connected in series. This combination of two resistors is connected in parallel to q1+d b0v;mcjgp vxr 0 79q5alwa third resistor. This set of three resistors is connected in series to a fourth resistor.” What is the equivalent resistance of this arrangement of four resistors?

  95.35: The voltmeter in the accompanying circuit diagram has internal resipvy0vts-ng.8) r* wh gstance 10.0 kW and the ammeter has internalvs h*vnwt)ygg- 8 0.pr resistance 25.0 ohm. The ammeter reading is 1.00 mA. The voltmeter reading is most nearly:

  97.37: Consider the compound circuit 1 sb * be2r.0) binx3wjktbyi4aaw*6y7szl4vshown to the right. The three bulbs 1, 2, a.zj*irxy)s6aynw21 0b lstbb 3ki 744awev*bnd 3 - represented as resistors in the diagram
- are identical. Which of the following statements are true?
I. Bulb 3 is brighter than bulb 1 or 2.
II. Bulb 3 has more current passing through it than bulb 1 or 2.
III. Bulb 3 has a greater voltage drop across it than bulb 1 or 2.

  99.30: Given the simple electrical circuit at thd-*+ df)d bxkhe right. If the current in all three resistors is equal, which of the following state)- dfxh* kbdd+ments must be true?

  99.37: The diagram a.sd zl /cr,vrl 1p5s5ct right represents a simple electric circuit composed of 5 identical light bulbs and 2 flashlight cells.d5/lr ssvz 1c.cl5pr, Which bulb (or bulbs)
would you expect to be the brightest?

  00.03: Which of the following statements is NOT true concernings6* 1xpx u;3g,vml4emzqw wi0 the simple circuit shown where resistors R1, R2 and R3 arevx ;u,mgxiww6z03p*4 qls e1m have equal resistances?

  17.29: Two lightbulbs X andY are connected in series to a battery. Bulb m1nz pkr:fa3+X is brighter than bulb Y. Assume all circuit elements are ideal. If bulbs X andY are conkznam:31+p fr nected in parallel with each other to the same battery, which one of the following choices best represents what is observed?

  06.34: How many coulombs will pass through t twi jp)-r8qr9he identified resistor in 5 q9jrt 8ri-)pw seconds once the circuit was closed?

  00.23: If all of the resistors is0:(g0qxn tpgn the following simple circuit have the same resistance, which would dissipate the greatest0tgp(sq:gn 0 x power?

  98.34: In the accompanying circuit diagram, thehs3+ bh-j-8pxr g( gyxj e.bj+ current through the 6.0 Ω resistor is.3+yhgsbr j( g8 hebjxj+px-- 1.0 A. What is the power supply voltage V?

  97.27: Three resistors R1, R2, and R3 are connected in/oy(voh )ie0+ 3og wqc series to a battery. Suppose R1 carries a current of 2.0 A, R2 has a resistance of 3.0Ω, and R3 dissipates 6.0 W of power. What is the vo cqow evyho3ig0/()+oltage across R3?

  99.40: Three different resistors R1, R2 andR3 are cuzi,o den7-a+pyh ,t;onnected in parallel to a battery. Suppose R1 has 2V aad tn ph,z7;+y ouie-,cross it, R2 = 4Ω, and R3 dissipates 6 W. What is the current in R3?

  99.13: A heating coiy*m hvyb1j ps6(: dy+hl is rated 1200 watts and 120 volts. What is the maximum value of thed h* 1yb:6vs+(ymyhjp current under these conditions?

  99.23: What is the resistancvytub/k/kej d lk*:j+91bog 2e of a 60 watt lightbulb designed to operate at 120 voltj1key bduol/b kk9/gj +:t* v2s?

  03.09: How much current flows through a 4 ohm resistor that is dissipating 36 w.yf7m rtqyi0hj6+vt .atts o.h 76.vtmy0 fjyqr+itf power?

  05.21: A household iron usechbg/ u -quy/coj;5l3ak:ty ;d to press clothes is marked "120 volt, 600 watt.” In normal use, ky hbul:gqc- a ut/oy;/35;cj the current in it is

  01.05: Which of the following resh*rek.5 bz7k kistances could NOT be produced by a circuit containingrh 7*e.bkkz k5 only three identical 6Ω resistors?

  94.37: You are given three 1.0 Ω resistors. Which of the followinn,/)u ql8he8fs0(q yi:bzpu z+nqwk 5g equivalent resistances CANNOzqknsun,eqyh88/ (:)uql 0zfp wi+5b T be produced using all three resistors?

  02.06: Three resistors of different values can be connec5yr x4v,bc fs;u (5rjrted together in different configurations. If all threesj545 ub(r,yf x;vrcr resistors are used in a circuit, how many different values of total resistance can be produced?

  97.35: When a single resistor is connected to a battery, a total power P im7n ji+hw xx: wkade*n::t15is dissipated in the circuit. How much total power is dissipated in a circuit if n identical resistors are connected in series using the same battery? Assume the internal resistance of th7 *k: xdtime1aw:xhn +nj5iw: e battery is zero.

  96.16: When two resistors, having resistance R1 and R2, are connected in ,8lc4j gu9zr . 0ra)nigrb7oiparallel, the equivalent resistance of the combination is 5Ω . Which of the following statements about thea9bi gz 0 o7)url jci.g8r4r,n resistances is correct?

  02.46: A hotplate is des-vj lunq ue602igned such that it has a resistance of 12Ω when operating at 120 volts. What is the minimum amount of time that it would take to warm 0.45 u6e2ln 0j-quv kg of water from $15^{\circ}C$ to$85^{\circ}C$?

  03.09: How much current flows thvzea 1h6 b)qcv o./u)srough a 4 ohm resistor that is dissipating 36 watts of powe b.16hcq)a) s/ veuvozr?

  01.24: An electric heater drawcx. 5 ((sjmf rwp*ri;ls 13 amperes of current when connected to 120 volts. If the pricexj*( r;i. mc(slrwf5p of electricity is $0.10/kWh, what would be the approximate cost of running the heater for 8 hours?

  08.05 Approximately how much would it cos1 e:yrrcq 7e9 b3jes+bt to keep a 100W lightbulb lit continuouslybr ec r9ys7e+jqb:3e1 for 1 year at a rate of $0.10/(kW.hr) ?

  12.09: A constant current of 4.00 A throubdbm g9w;/1av1+ tl8i/n+jc8pjxq y agh a lightbulb results in a power of 24.0 W associated with the bulb. Which one of the following choices becxvqa8/b mij bw1 +ld yag8+1/;p9tj nst represents the resistance of the lightbulb?

  01.10: Each member of a fam ii/r ((nyk8zxo4a c9eily of six owns a computer rated at 500 watts in a 120 V circuit. If all computers are plugged into a singlixz (ea co nrk/y(8i94e circuit protected by a 20 ampere fuse, what is the maximum number of the computers can be operating at the sametime?

  03.16: A 9-volt battery is connected to four resistors to form a simple circui njz.c uuj6a(3y ,hpk/t as s ypczu 3u ,hajk.j6n/(hown to the right.
How would the current through the 2 ohm resistor compare to the current through the 4 ohm resistor?

  03.17: A 9-volt battery is connected to four resistors to form a simple circuitcqv *iwd:w-ciu 23 wgt6r7,ni as shown to the righcwcg:6 qr t -wiu 3i2*7,dnvwit.
What would be the potential at point B with respect to point C in the above circuit?

  02.21: An ideal battery, an ideal ammek jom 2mi o32nghf2t2u*7jot*ter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeteit 2ook3j2m2uj *7t2om h*gfnr reads 2.0 amperes.
With the switch open, what would be the potential difference across the 15 ohm resistor?

  02.22: An ideal battery, an ideal ammeter, a switc5h.8gdgwc z* yh and three resistors are connected as shown. With the switch open as shown in the diagram thg5dw8c yh gz.*e ammeter reads 2.0 amperes.
With the switch open, what must be the voltage supplied by the battery?

  02.23: An ideal battery, an ideal ammew8m q ;t+zsl33*moxcl0fmr;1 gqdr +hter, a switch and three resistors are connected as shown. m;clr o*q38mztrg;s l0w fq1x3 +m+ hdWith the switch open as shown in the diagram the ammeter reads 2.0 amperes.
When the switch is closed, what would be the current in the circuit?

  12.14: For the circuit shown to the right, what is the equivalent resistanceo6rfo7sp.xa2 ? 6opf2x 7aros. Assume that all wires are ideal, the battery has no internal resistance, and all three resistors have identical resistance R.

  09.07: The equivalent resistance of the circuit shown to the right with*vm2ns+4u gsd vei:l+ resistanc*n2iv devmsl+ +:4ugses $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ and $R_3= 2.00Ω$ is

  04.20: The diagram below sho12 8p ,s bloefw(r7tvaws five identical resistors connected in a combination series and parallel circuit to aa1bl w(,vrosp7 ft8e2 voltage source.
Through which resistor(s) would there be the greatest current?

  04.21: The diagram below shows five identicalwii);+;z*f v t.pqbty resistors connected in a combination series and parallel circuit to a voltage+)bqtft*v;wp ;iz. yi source.
Which resistor(s) have the greatest rate of energy dissipation?

  07.29: In the circuit x;s:a iih n3)g diagram, all of the bulbs are identical. Which bulb will be the brighti:xs3)h ngia; est?

  02.21: An ideal battery, an ideal ammeter, a switch and three resistors ar(ziui/0j y(rzz5:v jfe connected as shown. With the switch oprij j:5fyiv uz0z/((zen as shown in the diagram the ammeter reads 2.0 amperes.
With the switch open, what would be the potential difference across the 15 ohm resistor?

  02.22: An ideal battery, an ideal ammeterouu:: i .k4lwgnm1z2*jlte/dn 5e qv 1, a switch and three resistors are connected as shown. With the switch op1/z n*d eu lg.on1qj4mluv wke2:t :i5en as shown in the diagram the ammeter reads 2.0 amperes.
With the switch open, what must be the voltage supplied by the battery?

  02.23: An ideal battery, an ideal ammeter, a switch and three reswu07;(m vvlawv xs 1/mistors are connected as sh/axv um1sw mv;7lw0 v(own. With the switch open as shown in the diagram the ammeter reads 2.0 amperes.
When the switch is closed, what would be the current in the circuit?