If the north poles of two bar magnets are brought close to each otn pw./.ktraxa( xdgg)6vf**u v)hy6eher, the magnets wkv 6da()yx.g) wp.xhf *ra*evn6gu/t ill

  If the south pole of one bar magnet is brfekz,4x ggovm(mfa4+yyj*3 1 0 k )havought near the north pole of a second bar maeyjkk1y*(fav),gfg4m ao3z 4v mh0x +gnet, the two magnets will

  If a bar magnet is divided into two equal pi ,*ag( wvak.huq2o 2zweces,

  The Earth's geographicx m+y- fiigg t+. xs/coc:n;7.glo pjfqhm;54 North Pole is magnetically a

  The south pole of a magnet points to6+vl9brqo hd/ ward the Earth's

  An electric current p88af (80fl4jpng c oiy zl4w4kroduces

  Which of the following is nagn 4k1 bg35lcorrect?

  A vertical wire carries a current straight down. To the h b ba0r 2,ei+ e9ndxr6tj.lv(east of this wire, the magnetic field poid6+ 0 lev jtn(b.2errb,ixh9ants

  A horizontal wire carries a ob:jl xzx; .n0j7dv p-current straight toward you. From your point of view, thj;0 odz7.j lnxvp:bx-e magnetic field caused by this current

  A current carrying loop of wire lies f2uler hf8 zsr0*u q1t8lat on a table top. When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic*08 1u lqrseuz82f hrt field caused by this current, outside the loop? The magnetic field

  A current carrying circular loop of wire lies flat on a table top. vgy3n+w mm:3 58v nlweav5 +vx When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic field caused by this current, inside th 3ga8v5+nwvm:m53wyle xn v v+e loop? The magnetic field

  The SI unit of magnetic fie c:1rr vje9x7pld is the

  1 T is equivalent tob :4q vde.q0z ,)grimrrk2/op

  The direction of the force on a current-carrying wire in a mag6i;dtn9 txf t6po* takl.dtkbc1 nkm 98)o.f 3netic field is described by f.tk9tpol66 id nt*dtc3k); 8kfmaobt9n1 .x which of the following?

  The force on a current-carrying wire in a magnetic field is the stroz ex6 tvpde *x9h1g98e+k9 rrangest when

  The force on a current-carrying wire in a magnetic field is equal to zero wh xqn81v/tgq,zf-dya ul+ c ;:ren

  A vertical wire carries a;u 9 xi2;h b:uwozfqu1 current straight up in a region where the magnetic field vector points due north. What is the direction of the r u;zh u:o;qxb2i9 fwu1esulting force on this current?

  A charged particle moves and experiences no magnetic force.i* k1p0sctl pa1 h*4jqrt 54fa From this we can conc5t*p 1ktc a4 0sq4r*flj1 iphalude that

  A charged particle moves with a constant speed through a region where a unif7 bwzbqf 1da4as(6vk*orm magnetic field is present. If the magnetic field points straight upward, the magne wa14azqbbd 67*svfk( tic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constant magnetic fielbatv q65;tz4hd. The magnetic force on this parti6tb4z5vtq ; hacle

  A charged particle is injected8d5arqo w xqhsv2(0s8 0w0 lnl into a uniform magnetic field such that its velocity vector is perpendicular to the magnetic fielda 5q(q2o8sn0s 0x8vwlldhw r0 vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in a circular path in a uniform0276 xjqrb uif*uqp0:;hzqdn magnetic field. If the pa7ur6bx:q q h*j fz0;i dup20qnrticle had been traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e travels in a circular path in a uniform msc a6/wrv1o u8agnetic field. If instead the particle carried a charge of +2e, the radius of the circular 16aur ocsv/8wpath would have been

  At a particular instant, a -e vf9jupjo;,n electron moves eastward at speed V in a uniform magnetic field that is directed straight downward. The magnetic force that actj-p v;,f9eo jus on it is

  An electron has an initial veloc3fuvdzq qu1bu.v(wp; zf/m *;ity to the south but is observed to curve upward as the result of a magnetic field. The dfup*uf.qw3(dbv /m; z qz v1;uirection of the magnetic field is

  An electron moving along the +x axis enters a regiorw -3iozt7gpt)a)c+a1t4um1ivi a0 x n where there is a uniform magnetic field in the +y direction. What is the direction of the magnetic force on the electron? ga41 ziapi wt)3v+rt xm1o 0 7)tuiac-(+x to right, +y up, and +z out of the page.)

  The magnetic field produced by a long straight current-carrying wire isl mq/l47htz c1

  At double the distance from a long current-carrying wire, the strength of q2(:m39g mdmpqn,+::du cbzva.ew:l k a 1vvk the magnetic(qb:mwagvd. pke:2 1+3 vqm,kz:lvan 9mucd: field produced by that wire decreases to

  Two long parallel wires placed side-by-side o:5uzpeoe: pvs*l99vtm *-vgldo- y(f n a horizontal table carry identical size currents in opposite directions. The wire on your right carries current toward you, and the 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 wireetv*l goovp-9mpy: 9d(*s z el f-u:5vs

  Two long parallel wires placed side-by-side on a horizontal table carry idt8 eaae n2ag.f 1y,v*gentical current straight toward you. From your point of view, the magnetic field ataf.e ,gy2 a*vg1a8etn the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnitude of the force08,vy(kt *han,5v t ad5d vwdh between the wires is F. The current in each wid(yw5hvk 0 a,,d8natdh5tvv* re is now doubled. What is the magnitude of the new force between the two wires?

  A long straight wire c0 y- 0jmksf jcbr.5d:aarries current toward the east. A proton moves toward the east alongside and jua0c:jmbd5. 0j -yfsk rst south of the wire. What is the direction of the force on the proton?

  A wire lying in the plane of +7p2vmjk:,cx0c i dhxthe page carries a current toward the bottom of the page. What is the h+xv,k 7 0djxc: 2cpmidirection of the magnetic force it produces on an electron that is moving perpendicularly toward the wire, also in the plane of the page, from your right?

  Two long parallel wires arjrht/rv (t 84z sjue./0z,bgbe placed side-by-side on a horizontal table. If the wires carry current in the same dij 04u/bhstbzj8, rrv.te(/gzrection,

  Two long parallel wir1dc1bw-g6 nscn e2e -re- tfu;es are placed side-by-side on a horizontal table. If the wires carry current ;nc-w b-dnuer1t6 e1 2ecf-gs in opposite directions,

  Consider two current-carrying circult2, (chdrwg 7lar loops. Both are made from one strand of wire and both carry the same current, but one has twice the radius of the other. Compar h7r(cldwg2t, ed 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-carrying cz-w)48*lizxlb/9ryaqy me l agxt.jy 2a(6p ,ircular 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, the magnetic moment oflzxe(m)8gpq/ aa 9a4z-6x r,y*ylbtl yi 2 jw. the larger loop is

  The maximum torque on a current carrying loop ocit x r1w-dv)6jmo-z,fcurs when the angle between the 1-vmz,)xjdi t w rof6-loop's magnetic moment and the magnetic field vector is

  When placed askew in a1tzsocvb; txi 9 mvix, *9p;h4 magnetic field, a current carrying loop that is free to rotate in any direction will experience a torque until its bic9 ;z9t s;1t*xvxhp ,imo 4vmagnetic moment vector

  What fundamental fact underlies the operation of essentia-7 .vl mr ,dfiokqj5auq,thnu q).8w4lly all electric motors q ,4nu fraiqm- tl8hw5jukd7..,) qvo?

  A circular wire loop lies in a horizontal plane 4u oi(wtw/v.m on a table and carries current in a counterclockwise direction w4w(tmi v/uo.when viewed from above. At this point, the Earth's magnetic field points to the north and dips 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 spectromete7k xlw7xmid1bsnbhrjkw ;0f 48(h(:pr a particle of mass m and charge q is accelerated through a potential difference V and allowed to 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 expressih8 :hd0nk wifj;m b(k(1pw x7s br4x7lon for the mass of the particle in terms of B, q, V, and R.

  A velocity selector consists of a charged part47dh j*tnsm jhdxk6+ e;r,6wficle passing through crossed electric and magnetic fields. The forces exerted by these fields are in opposite directiof dj t hersw7h*k,n+ 66m;4djxns, and only particles of a certain velocity will move in a straight line. In the following, disregard the magnitudes of the 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 parallel to a uniform magntn;:q0zi.c l/9juq m;1 ejuqletic fcutl .il/9zmqjq;;jqu e1 0n: ield of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a dir)zyqe,kavq/- x mp89uection of $30^{\circ}$ 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 c+rc0 gnpiy( 0cm :di1A when it is placed mc(i+ndp0 rcgi01 yc:in a magnetic field of 0.020 T? The wire makes an angle of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long ht /wea38oeno*c 2oirl-f;( ot as a mass of 0.050 kg and is in a magnetic field of 0.10 T. What minimum current f l*et;eor8 n o-/2oict(aw3oin the rod is needed in order for the magnetic force to cancel the weight of the rod?

  A stationary proton is in a uniform magnetic field of 0.t2/zs4wgwos1fqz; y a a a:9(v20 T. What is the magnitude of the magnetic force on the p4/ gww( :a;1zas9so qz2avfty roton?

  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 wit2qx;8t0sq 3 ypvff9k0ycywq7 h a speed of $5.0 \times 10^4 \; m/s$ 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 kt, je,m .h fnx5k1c8tspeed of $5.0 \times 10^7 \; m/s$ 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 awfcam f (10(kat3yi45h zme2with speed $4.0 \times 10^5 \; m/s$ 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 with qlw3e2ozf6tmiydm- 4/a4 hu jo p )4i .-6goxja 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 with a speed oj,d/u5a +6kxv+ jmohff $8.0 \times 10^6 \; m/s$ 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 st k2(5szi8omof $3.0 \times 10^6 \; m/s$ 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. Wztd 8zb0jr 3*ihat is the magnitude of the magnetic field at a distance of 0.15 m from 3*8izr0 ztbd jthe wire?

  A high power line carr xgh;lpm1odqf.k e .xn.k 4i:0ying 1000 A generates what magnetic field at the ground, 10 m awayid k gx4.n;lmxqo 0pe .:1k.hf?

  How much current must flow v6bep8)rk6 xxqtss0 py ;.n9bfor $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long straight wire carrying a curre;ythiffzy* c : 1fq/+vnt of 5.0 A is the magnitude of the magnetic f *tvfc+;/yyzi:q1 fhfield due to the wire equal to the strength of the Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents of 10 A in opposite dirf6e*g7cmcpfxz:2 g d ,ections. 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 otdc pgx,mf*eg fz7c62: her?

  Two long parallel wires 9ms22mo9)gm, /wrsg y18x6pa i a tjtvcarry currents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the magnetitg pma62/vjm,8s1o ) yr9imt2ga x9swc field midway between the two wires?

  Two long parallel wires carry currents of 3exgu3fc to .- u kjf;3xvz49h20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. At what point between the two wires are the contributi- zve3 ht433fc fu.xjxugo 9;kons from the two wires the same?

  Four long parallel wires each carry 2.0 A in the same direction. They , -so j6cxfbelfg7+k *are parallel to +sl6cg7*f oj, -b fxekthe z-axis, and they pass through the corners of a square of side 4.0 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 in thp2nzn,q7d1f deya5 s0e opposite direction. The wires are separatdy dfe p27 z1ans5,n0qed by 0.30 m. Find the magnetic force per unit length between the two wires.

  What is the magnetic field at thw eu *pfeg+s8 n 9 74okyuek35xet4u)xe center of a circular loop of wire of radius 4.0 cm when a current of 2. uee y*eu43ust4kg5 p7wn x+ke8x9fo)0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns p.sg d0)f0d ivd,a+umof wire. What magnetic field is produced at the center of the solenoid when a current of 10 Ag).ma idu0vd ,dp sf0+ flows?

  A solenoid with 500 turns is 0.10 m long and carries akpl p3 mtk4cyk.( 43kn current of 4.0 A. What strk yk4 ptckl3 knm4(3.pength of magnetic field will it have at its center?

  How much current must pass through a 400 turn congmp) 3u e91v4t0nt esby1k +vil 4.0 cm long to generate a 1.0-Tntevs g1+b)3knp9 m t1yu4ev0 magnetic field at the center?

  How many turns should a 10-cm long solenoid have if it is to gen4d4iews(o:f d erate a $1.5 \times 10^{-3} \; T$ magnetic field on 1.0 A of current?

  What is the magnetic moment of a rectangular loop of 120 turns that carrieeh/k -byvd + :jrtw.de2m. 1qxtok :m4s 6.0 A if its dime:dykvktdb+w -j xhe2eqm/1rm4t:. .onsions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.( kgj xy1avee -kkk0cx/ h i/u425fnm150 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 perpendicular to the magnx-cmv gk4/ek1 e2 j5xk uin(hf1 a0/yketic field?

  A circular loop of wire of cross-sea)b (or1x5s+ buz8yf fctional area $0.12 \; m^{2}$ 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 magnetic field of 3.5 -z:ri.eolc,y0 : 1i 2bgzpqjkT. The loop g2:cijpzqe- 1: zbli,k y.0ro 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 b/ck 2f(io/b/lbj/p j0.50 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 mp/iobkbcl j/ j(2//b fagnetic field?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic fieldoh/ ms-u v 3zpbjh215s of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane of the loopmhzossu5-j3bh/v p21 is parallel to the magnetic field?

  A circular wire loop o 2s8axj*clzph4) fny3 f area $0.25 \; m^{2}$ 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 (charge e) has a speed odm k8b:8d a-ny6dvvm5f $1.0 \times 10^6 \; m/s$ 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 vkkjfq-3 9yjno d e8x l.ftyith*u7(94 elocity $6.9 \times 10^6 \; m/s$ 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 thena69m3si oqu8(w(nuj td5l;0vqb.oiv moves into a magnetic field of 0.040 T. What is 0q8(9tdb q oajw6vi.m;uls u3v no i5(the radius of the proton's resulting orbit?

  A proton is accelerated from rest through 500 V. It enters a magnetic field ogjc..lsb/ +s2opia i0f 0.30 T oriented perpendicular to its direction of motion. Determcbs.02as./gpo il ji+ine the radius of the path it follows.

  A beam of electrons is accelerated through 3lq,vyro*3kea potential difference of 10 kV before entering a velocity selector. If the B-field of the velocity selector has a value of 0.010 T, what value of the ek*r,l3 qvy3o E-field is required if the particles are to be undeflected?