If the north poles of two bar ma p 3ru1ea:iq:mgnets are brought close to each other, the magnets wiliue: 3q1p ra:ml

  If the south pole of one bar magnet is broughamcw.6 nq3ke (4:vbh-jww1 nrt near the north pole of a second bar magnet, the tb -v4:w1c36m(arnwkn . e wjqhwo magnets will

  If a bar magnet is divided into two equal piechy v+kn x+8s-zes,

  The Earth's geographic North Pole is magnl,lq2u l ryq,ix+ 2i :p8yxif5j 3qy6eetically a

  The south pole of a magnet points t 9x47pz0uik1swuu q 1te ,-tjmoward the Earth's

  An electric current p/sp)./a+ prltae+ catroduces

  Which of the following is cormf.alane9* la (gff*:i2f 8 uzrect?

  A vertical wire carries a curv /rj8l,p + h-j4spfvb0rga-lrent straight down. To the east of this wire, the magnetic fieldfvs-rhrjpgv la+ p,b40/ - 8lj points

  A horizontal wire carries a current straight toward you. From your pknc yr.j.z )trc2, /deoint of vie ,.ry/ ktdrccj.)n2zew, the magnetic field caused by this current

  A current carrying loop of wire lies flat nhddm2 )4zv*-ry )56rq qbymcon a table top. When viewed from above, the current moves around the loop in a counterclockwise sens65rmq ) y-2d ) yqhmbzr*v4dnce. What is the direction of the magnetic field caused by this current, outside the loop? The magnetic field

  A current carrying circular loop of wire lies flat on a 529kqc ntmsqgm4+2bxtable top. When viewed from a bqm49+k n2qtxmgs52cbove, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic field caused by this current, inside the loop? The magnetic field

  The SI unit of magnetic field is thuz * 1iijdbq).5:v6yuj eke6i xw5 2tee

  1 T is equivalent tog x ire5 elzo.9+xw,q**vb k3t

  The direction of the force on a current-carrying wirexb 2m6p81ivgt in a magnetic field is descrg8 b tx2vim6p1ibed by which of the following?

  The force on a current-carrying wire in a magn9j/xx.qu32 higvz uyi 1f-qp5uv(zv1 osg (o2etic field is the strongest when

  The force on a current-carrying wire in a mun3,8pya gm/ragnetic field is equal to zero when

  A vertical wire carries a current straight up in a region where the magvx89e yeq1.j mk f/7krnetic field vector points due north. What is the direction of the resulting force on k 7r/f89ymxkj qvee.1this current?

  A charged particle moves and experiences no magnetic force. From y0:1-mencpi w this we can concp1:cmy0 iwn e-lude that

  A charged particle m- hc-vm yyw:;xoves with a constant speed through a region where a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting on this particle will be maximum when the particlyhw yx-:-; cmve moves

  A charged particle moves across a constant magnetic field. The magnetic forad)(qm+3x2k/zxz9r gg kg.,w6w2 upa9zqnjbce on thisb+g ,9/x( .xaza)9unw3p22 qzz mkr 6ggwdjqk particle

  A charged particle is injected into a uniform magnetic fieldrorabj, 77ks+qv 0- eenu jk2- such that its velocity vector is perpendicular to the magnetic field vector. Ignoring the particle's weight, the7 o sre-re, jkvjk- 7b0aqun+2 particle will

  A charged particle is observed traveling in a circular path n q xeu;9w52g8v dsha5in a uniform magnetic field. If the particle had been traveling twice as fast, the radius of the circan g58xhd2wes 9q v;5uular path would be

  A particle carrying a crt fl*ucu1n * tmlko1aji,7p/*1 1d jgharge of +e travels in a circular path in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of the circular path wou ntl1t l*au1ug m1c1j ip7,o*/*jdrkfld have been

  At a particular instant, an el w3 v)ua bav v/cnt)*z0q)-fanectron moves eastward at speed V in a uniform magnetic field that is directed straight downward. The magnetic force that acts on ia/v)a 0qwn- b)cavtvu)f z3n* t is

  An electron has an initial ve0tw-c- nrn-u q14zt hrlocity to the south but is observed to curve upward as the result of a magnetic field n z-t-uq-r c4w10trnh. The direction of the magnetic field is

  An electron moving along the +x axis enters a region where therg:*abu jeqoc6+isf63ba .xo)doc3* qe is a uniform magnetic field in the +y direction. What is the direction of the magnetic force on the electron? (3)b i66 xasu*q3c:qadg+ojb.*eocof+x to right, +y up, and +z out of the page.)

  The magnetic field produced by a lo qmz*4r2pqb 0qng straight current-carrying wire is

  At double the distance from a long current-carrying wire, the strength of 2q/3kg.j/ qzhhfd c/rthe magnetic field produced by that wiregqq/h3 /h.ckd2fj/ zr decreases to

  Two long parallel wires placed side-tz30*khup g/1udohf/ by-side on a horizontal table carry identical size currents in opposite directions. The wire on your right carries current toward you, and zkd1 /*ho0huu/fg3tpthe wire on your left carries current away from you. From your point of view, the magnetic field at the point exactly midway between the two wires

  Two long parallel wires placed side-by-side on a horizontal table carry identic f/ o6f75n5dxm :s ximx9vj++igffikkg l:: :gal current straight toward you. From your point of view, the magnetic field at the point exn ms5f: +g7vxkfkx :5 ogif9ii fmxjdg:: +6l/actly between the two wires

  Two long parallel wires carry e 1ofmguru k1 lj1o;hs4ae w4g6v3bwz7mr*+p0qual currents. The magnitude of the force between the wires is F. The current in each wire is now doubled. What is the magnitude of the new force beo+p4zjgu w 1k61;*1wh vs70lm mbg4rourfa3etween the two wires?

  A long straight wire carries current toward the east. A9 b6o81r phbnr proton moves toward the east96brnp 18obr h alongside and just south of the wire. What is the direction of the force on the proton?

  A wire lying in the plane of the page carries a current towan)m5un8n. tj nrd the bottom of the page. What is the direction of the magnetic force it produces on an electron that in.)nmu 85ntnjs moving perpendicularly toward the wire, also in the plane of the page, from your right?

  Two long parallel wires are placed side-by-side on a horizontal table. +n6r ;nyd g/an5tokv3dl n +f0 If the wires carry curre3+ gnrn+fat6y k od;v/lnn 5d0nt in the same direction,

  Two long parallel wires are placed side-by-side on a horizontal table. Ifd t pu/1k(pct-wm+0 t. a3hh1m n/pvpi the wires carry current in opposite direc0 pt1/(3ai d+hcp /-p1vtp n mkmuht.wtions,

  Consider two current-carrying cirdvz +/u l85zcecular loops. Both are made from one strand of wire and both carry the s58d + vlezucz/ame current, but one has twice the radius of the other. Compared to the magnetic field at the center of the smaller loop, the magnetic field at the center of the larger loop is

  Consider two current-ca0d. i/ 2ed sgljihk-ns 0 imn/l/)ki(prrying circular loops. Both are made from one strand of wire and both carry the same current, but one has twice the radius of the other. Compared to the magnetic moment of the smaller loop, -0)/ ni d2k lspigs(.mjinh/k l/ e0idthe magnetic moment of the larger loop is

  The maximum torque on a current carrying loop occurs when the angle between the+z c,nbh)ws0azlj2 7a loop's magnetic b) n2 cslwjazah+ ,07zmoment and the magnetic field vector is

  When placed askew in a magnetic field, a current carrying loop thats u+ 6mab:,mkec+5s dx is free to rotate in any direction will experience a torque usuem+5:,+6 aksmb dx cntil its magnetic moment vector

  What fundamental fact o,fgc3- x2 zwuunderlies the operation of essentially all electric motors?,o3wc xfu2-g z

  A circular wire loop lies in a horizontal plane on a table and carries current ipc6,:+e mho)kxbq (,ta pi 0ezn a counterclockwise direction when viewed from above. At this point, the Earth's magnetic field points to the north and d(zc o+ :6 t,aiekqbe,0 hxpm)pips below the horizontal. Which side of the coil tends to lift off of the table because of the torque caused by the currents interaction with the magnetic field?

  In a mass spectrometer a particle of mass m and charge q is accelerated through wxm z;2kvhqnp,6:t c4q v5 whll.35opa potential difference V and allowed tlk,htqp6235 pv m.vh:zlx;4o n qwwc 5o enter a magnetic field B, where it is deflected in a semi-circular path of radius R. The magnetic field is uniform and oriented perpendicular to the velocity of the particle. Derive an expression for the mass of the particle in terms of B, q, V, and R.

  A velocity selector consists of a charged particle passing through cuz8g*j) 1zmgq rossed electric and magnetic fields. The forces exerted by these fields are in opposite directions, and only particles of a certain velocity will move in a straight line. In the following, disregard the magnitudes of thgm u q*jgz8z)1e fields. In a velocity selector, the particles move toward the east, and the magnetic field is directed to the north. What direction should the electric field point?

  A 2.0-m wire carrying a current of 0.60 A is oriented parallelgbf d/fw -.j+u to a uniform magnetic field of bfwj+d/.u g-f
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a direction o 1 hzva*c/g3xge +ky*if $30^{\circ}$ with respect to the direction of a 0.30-T magnetic field. Find the magnitude of the magnetic force on a 0.50-m length of the wire.

  What is the force per meter on a straight wire carrying 5.0 A when it iw7k 2:my9sbh ws placed in a magnetic field of 0.020 T? The w b 2ms97wy:hkwire makes an angle of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long has a mass of 0.050 kg and is y-tkbi pb s.4tb pd4wwt.a,zxlf, .(1 in a magnetic field of 0.10 T. What minimum current in the rod is needed in order for the magnetic fs4 twb ,,a .( . wxb.iydztlbpt4kf1-porce to cancel the weight of the rod?

  A stationary proton is in a uniform magneticf f6i(qo )s, izdeia/* field of 0.20 T. What is the magnitude of the magnetic for,iqs)aoz / ffi*d(ie 6ce on the proton?

  A proton moving at $4.0 \times 10^4 \; m/s$ horizontally enters a region where a magnetic field of 0.13 T is present, directed vertically downward. What force acts on the proton?

  An electron moves with a speed of ch;:hzm 6n g3r$5.0 \times 10^4 \; m/s$ perpendicular to a uniform magnetic field of 0.20 T. What is the magnitude of the magnetic force on the electron?

  A proton travels at a speed o)t8 ysy*ki6 nfg sh20lf $5.0 \times 10^7 \; m/s$ through a 1.0-T magnetic field. What is the magnitude of the magnetic force which acts on the proton if the angle between the proton's velocity and the magnetic field vector is $30^{\circ}$?

  An electron traveling due north with spx6o.,ci r(b omeed $4.0 \times 10^5 \; m/s$ enters a region where the Earth's magnetic field has the magnitude $5.0 \times 10^{-5} \; T$ and is directed downward at $45^{\circ}$ below horizontal. What force acts on the electron?

  An electron moves wi(ck ( yrqsh8+gth a speed of $8.0 \times 10^6 \; m/s$ along the +x axis. It enters a region where there is a magnetic field of 2.5 T, directed at an angle of $60^{\circ}$ to the +x axis and lying in the $xy$ plane. Calculate the magnetic force of the electron.

  An electron moves witov. :fk0n :sy3 t72kzssnve b:h a speed of $8.0 \times 10^6 \; m/s$ along the +x axis. It enters a region where there is a magnetic field of 2.5 T, directed at an angle of $60^{\circ}$ to the +x axis and lying in the $xy$ plane. Calculate the acceleration of the electron.

  A proton has a speed o(5 dfl-) 7ilmrfycw3qf $3.0 \times 10^6 \; m/s$ in a direction perpendicular to a uniform magnetic field, and the proton moves in a circle of radius 0.20 m. What is the magnitude of the magnetic field?

  A very long straight wire carries a current of 25 A. What is the magni --f0nozbp pj ,ym2cy;tude of the mapf c2b; -0pnzj-o,myy gnetic field at a distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates whatbeke4 r4t;9rcblgm+/ magnetic field at the ground, 10 m amerb9t4l+g;/ be4c k rway?

  How much current must p:;e ;ascze) wflow for $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a lon6gxssk*i4arr:mhj d.x++g r6g straight wire carrying a current of 5.0 A is the magnitude of the magnetic field due to the wire equal to the strength of the Earth's magnetic field of about++*6x 4sj:. mhg gaxrsdrrk6i $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents of 10 A in opposite -ujgkx szi 44/ hc3v,wdirections. They are separated by 40 cm. What is the magnetic field in the plane of the wires at a point that is 20 cm from one wire and 60 cm from the otwc34 g/4 zv-x,ukjshiher?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposit9,p. ns*hqwmwwm uibg3f1(u iy45(que directions. The wires are separated by 0.20 m. What is the magnetic 1u3pqmfgwwb9uuyih.*i ( 4m (qsnw 5,field midway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in opv: p;z.mqc*a dposite directions. The wires are separated by 0.20 m. At what point between the two wires are the contributions from dac:qm ;.vpz* the two wires the same?

  Four long parallel wires each carryb. cf. gtgfh,t2)6pvi 2.0 A in the same direction. They are parallel to the z-axis, and they pass through the corners of a square of side 4.0 fp,c.hg )vtg btf2.i6 cm positioned in the x-y plane. What magnetic field does one of the wires experience due to the other wires?

  Two long parallel wires carry currents of 5.0 A and 8.0 A. 7snv8z:x z4 /jil2 keuiels; in the opposite direction. The wires are separated by 0.30 m. Find the magnetic force per unitsn kl.vz7 is:le/42e;j zx8 ui length between the two wires.

  What is the magnetic field at the center of a 4gsm/upv7o q3 circular loop of wire of radius 4.0 cm when so4p m3uvq7g/ a current of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of ikqzhkt.)yp5;kn- , i wire. What magnetic field is produced at the center of the solenoid when a cuk.pk)t ih 5,kzqi-;n yrrent of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carries a current of 4., 1:dgk,pd;2gr2z8b:e v*te zigdgyq0 A. What strength oiyg zd;2gt:, p8dgr d2 eg 1zq*ekb,v:f magnetic field will it have at its center?

  How much current must pass through a 400 turn coil 4.0 cm long to generakuob28uryq :c8pwy+ w3 t-ka3te a 1.0-T magnetic qw82pu-a8r:c3kyuo tw3+y bkfield at the center?

  How many turns should a 10- k(1bmhp zuax+q*,ru1 cm long solenoid have if it is to generate a $1.5 \times 10^{-3} \; T$ magnetic field on 1.0 A of current?

  What is the magnetic moment of a rectangular loop o,-pd+ z n-usi/buhu:bf 120 turns that carries 6.0 A if its dimensions are 4.0 cm xz-u+,shp ui:-/b bnud 8.0 cm?

  A circular loop of wi obr5 fyl5l76jre of radius 0.50 m is in a uniform magnetic field of 0.30 T. The cur 5 rl6oyfblj75rent in the loop is 2.0 A. What is the magnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sectional ar/x7c e9yq723ccjytnvt 3so; ngq7: ndea $0.12 \; m^{2}$ consists of 200 turns, each carrying 0.50 A current. It is placed in a magnetic field of 0.050 T oriented at $30^{\circ}$ to the plane of the loop. What torque acts on the loop?

  A circular loop carrying a current of 2.0 A is in a magnet dd3.py: e2qu+ 9z bwcq9kdxm*ic field of 3.5 T. The loopexz2mu+qc q*9 :d.3 pwbdy9d k has an area of $0.12 \; m^{2}$ and its plane is oriented at a $37^{\circ}$ angle to the field. What is the magnitude of the magnetic torque on the loop?

  A circular loop of wire of radius 0.50 m is in a unp6t * xyr;qp c1aoufj4spz 6k*a .o)5biform magnetic field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane of the loop is paralleoxrp6pbs*t6az u. a ;ckq)*fo1jyp45 l to the magnetic field?

  A circular loop of w.pm0aw 3uj54df 5 jcdyire of radius 0.50 m is in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane of the loop is parallel to the magnetic fiej5mdp w3dj a u.y45c0fld?

  A circular wire loop of arei)qrlc1gckkmk8yd rc2*5 az e q9y,,(a $0.25 \; m^{2}$ carries a current of 5.0 A. The coil lies in a horizontal plane with the current flowing in the counterclockwise direction when viewed from above. At this point, the Earth's magnetic field is $1.2 \times 10^{-4} \; T$ directed $60^{\circ}$ below the horizontal. What is the magnitude of the torque which acts on the loop?

  In a mass spectrometer, a single-charged particle n0 )uswqa9ed.(charge e) has a speed of $1.0 \times 10^6 \; m/s$ and enters a uniform magnetic field of 0.20 T. The radius of the circular orbit is 0.020 m. What is the mass of the particle?

  A doubly charged ion with ve+h s5svl( r6yzlocity $6.9 \times 10^6 \; m/s$ moves in a path of radius 30 cm in a magnetic field of 0.80 T in a mass spectrometer. What is the mass of this ion?

  A proton travels through a potential of 1.0 kV and then moves into a ma .r vh)y4;musi( pc;e fpsd:0kgnetic field of 0.040 T. What is the radius o4;;ec sk.)v pprhy u( mdfs:0if the proton's resulting orbit?

  A proton is accelerated from rest through 500 V. It enters a magnetic f4kf* e(eiowmw2ifu 6 4ield of 0.30 T oriented perpendicular to its direction of motion. Determine the 64ek*2u w omi if(ewf4radius of the path it follows.

  A beam of electrons is accelerated through a potential difference of 10 kV befczh9 -e8por3wnd0u /dore entering a velocity selector. If the B-field of the velocity selector has a value of 0.010 T, what value of the E-field is required ice-hrw dpo8n90 3zdu/f the particles are to be undeflected?