If the north poles of two bar magnets are brought close to eacr. snvj.,:v8 lv5t9gde/apvrx 7:je mh other, the magnets will v:g :5v xpm8.7j.sarte,ln/ jvr9dev

  If the south pole of one bar magnet is brought near the north pole of a seco5.ya: dr. 8ud jxte ; lo,ilkqw5j)rm)nd bar magnet, the two: ,lx j; )5tdkoa8 mr uy)re5l.qjwid. magnets will

  If a bar magnet is divided into idl,g)djy9 i+t f1cxa*tm 4q::2q xvhtwo equal pieces,

  The Earth's geographic North Pole is mbu95lsw* bd6i*0b7tzw)ds xlwh( l c) agnetically a

  The south pole of a magnet points toward the Earthg rk m9oj+ko7+ pme0g-'s

  An electric current produca8 vb3b)+2qc..wkb z.nt frho( bu*wkes

  Which of the followifj e s;x,nm47:sqni 3lfsbl(:ng is correct?

  A vertical wire carries a current straight dk*kmr0d-y fb q0g,zk, own. To the east of this wire, the magnetic fielddyrqgk k kf*0, z0,bm- points

  A horizontal wire carries a current straight toqe4zzklvmk7,7 )v3lztr / t m.ward you. From your point of view, the magne,m ztrvkq/lmkl.z347z e 7vt )tic field caused by this current

  A current carrying loop of wircw:g xq7hmjb5e8rd;:4,vg81fu euy se lies flat 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 field caused by this curren; 4xe: e8:sf cu8,uvd1g7bqg 5 rwmjhyt, outside the loop? The magnetic field

  A current carrying circular loop of wire lies fl) .b1otuby b0fat on a table top. When viewed from above, the current moves around the loop in a counterclo1uotf0 y)bb b.ckwise sense. What is the direction of the magnetic field caused by this current, inside the loop? The magnetic field

  The SI unit of magneticx7 wtx7 thu9lit 58s)q field is the

  1 T is equivalent tot1oufpd2q uicq9xmedf8.wir 3 3)d: 1

  The direction of the force on a current-ca 6f.0 7ocsvhmkrrying wire in a magnetic field is described by which of the follok6cos70m hvf. wing?

  The force on a current-carrying wire in a magnetic field fgk m9:0cn mwl;.p;ok is the strongest when

  The force on a current-carrying e8tr r.a) rv,xwire in a magnetic field is equal to zero when

  A vertical wire carries a current straight umza+o-z :v:zur6h fs2p in a region where the magnetic field vector points due north. What is the direction of the resulting foras-zzof :zmr u:6v2h +ce on this current?

  A charged particle moves and experiences no magnetic force. Fromn/rzs/o)60n i oudp*q this we can conclurio6/ nz sndqo/u0)p *de that

  A charged particle moves with a constant speed through a region wher4,gwe **,rf3xli f gd6 z:tnwge a uniform magnetic field is present. If the magnetic field pointsz,l :e*wgngfg 6 *iwf,t r34dx straight upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves acrosspj2:pxu ml-d . a constant magnetic field. The magnetic force on this p :j l-upmp2d.xarticle

  A charged particle is injected into a uniform magnetic field such thkd0;s e:joywj(/ n5myat its velocity vector is perpendicular to the magnetic field vector. Ignoring the 0de /njk;5s y(:w joymparticle's weight, the particle will

  A charged particle is observed traveling in a circular patb8w .e6unplblg /w ;11 tla4eph in a uniform magnetic field. If the particle had been traveling twice as fast, 4l/pebp u1t.ew 1a;bw8l nl 6gthe radius of the circular path would be

  A particle carrying a charghtt75yd:c k 9xo bx4,iu0 vy+oe of +e travels in a circular path in a uniform magnetic field. If instead the particle carried a charge of +2e, the radx y+5,7vi :ohok9 0dxt4 ubcytius of the circular path would have been

  At a particular instant, an electron moves eastward at speed V in a uniform mag8 r:uv)nqh7c hnetic field that is d unq 8)hr:h7vcirected straight downward. The magnetic force that acts on it is

  An electron has an initial velocity to the south but is observed to curve u6nb :7jb hza,9l vq28ar7 u0qpth5 gpgpwardhqrzb0b6:j97pahtlv8 u,p7a ng2gq5 as the result of a magnetic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a region where there 1; cl+ u)l.z.glai fdxis a uniform magnetic field in the +y direction. What is the direction of t1)di cgzl afll +;x..uhe magnetic force on the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced by a long straight current-carrying wire is5+ eh:difhq8n

  At double the distance from a long current-carrying wire, tk p6mhb i6vw (zz.z3:the strength of the magnetic field produced by that wire decreases36 (zh.tmz6 pkzb:wi v to

  Two long parallel wires placed side-by-side on a horizontal tablfhk.k*6fir4ljv0tqz zg(i :+*r; cgfe carry identical size currents in opposite directions. The wire on your right carries curren.*( r +gqtfzff ih4k60j *lr;k:izvgct 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 wires

  Two long parallel wires placed side-by-s :pu6m stg;8fjcn1 9bmide on a horizontal table carry identical current straight toward you. From your point of view, the magnetic field atm6 m1gjtp 8;c:bfun9s the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnit5,*dqiah.c i hude of the force betwee .qdai*hhci,5n the wires is F. The current in each wire is now doubled. What is the magnitude of the new force between the two wires?

  A long straight wire carries current toward the east. A proton moua( 2f: nhv3wrves toward the east alongside and just soutrufa3v n2h w:(h of the wire. What is the direction of the force on the proton?

  A wire lying in the .sl*y4 ,pophpplane of the page carries a current toward the bottom of the py*oh s.p4p ,lpage. What is the direction 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 are placed side-by-sider 32ctovx :ke yi2q1t6 on a horizontal table. If the wires carry current in the same direct 2tre2o qxyvct 1ki6:3ion,

  Two long parallel wir7j( uzq6wzh5x es are placed side-by-side on a horizontal table. If the wireu7zhx6j (5w qzs carry current in opposite directions,

  Consider two current-carrying circular loops. Both are made,bbp.en. kv480 ztwaa from one strand of wire and both carry the same current, but one has twice the raa,k e. atzb8.nvwbp40dius 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-carrying circulgie 5x24s3yozh5 v ;mnar loops. Both are made from one strand of wire ;3m on5v52x4ygehzis 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 of the larger loop is

  The maximum torque on a current carrying loop occurs6yc + 2awosc3h when the angle between the loop's magnetic moment and the magnea3cc+o h syw62tic field vector is

  When placed askew in a magnetic field, a current carryintbu* q-a)*hfsw : rr3f9k h5qig loop that is free to rotate i iufkw-5r) *3ft* sqbqr: a9hhn any direction will experience a torque until its magnetic moment vector

  What fundamental fact underlies the operation of es8ld8erroix w (c, l(6gsentially all electric motorsgdl8ix ,l6 rreco(8 w(?

  A circular wire loopcd- faif30o-q(fy v21m hncr/ lies in a horizontal plane on a table and carries current in a counterclockwise direction 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 qa- d/mcy fih 1fnv2 (f0ro-c3field?

  In a mass spectrometer a partic ;+i1 yqxknro(le 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 velocity1rk(;oin+yx q 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 :8eoitoh.j t2r069tl4d wf flthrough crossed 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 the fields. In a velocity selector, the particles move toward the east, and the magnetic field is d et9 tl.oj0hf6r4lto:id82fwirected to the north. What direction should the electric field point?

  A 2.0-m wire carrying a current of 0.60 A is oriented paga+zqgv9 s4 )c0t7uxdrallel to a uniform magnetic fielqu0 s gt9a74zv+c )xgdd of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a directpmekq5 /iz 7gr/1 .tibion 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 o55n8 i8ovjwaz c+u jlxv;b82wire carrying 5.0 A when it is placed in a magnetic field of 0.020 T? The wire makes an angle o8+ub25j; jxl5czia wno 88vvof $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long has a mass of 0.050 kg and igdhshkx2 al:;)g 9q0+yb d1lds in a magnetic field of 0.10 T. What minimum current in the rod is needed in order for the mahd0g9la+yh1s ;b k)g2q xd:d lgnetic force to cancel the weight of the rod?

  A stationary proton is in a uniform magnetic field of 0.20 T. What isxa 1hx: 5+asyehh4c k2 the magnitude of thh2a :c45hx1+a xeksyhe magnetic force 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 qfl c+ 6hg1yc6speed 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 speedkgn(4x,a wiw; 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 wit7xt::uyv.rjl, ,yglt med r 65h 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 a speed z.-qmd d6-d1u*1yj3 zqll ho gof $8.0 \times 10^6 \; m/s$ 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 1gaio.nq+fi l77z+; -x :/w pedntdhtof $8.0 \times 10^6 \; m/s$ 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 of-bblp9 atwuvhm58qx )d2xc;m9k- +du $3.0 \times 10^6 \; m/s$ 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 Ah auwc.0*zr0c:tviz 2 bi3z a1. What is the magnitude of the magnetic field at a distance otcb1 vc z3wa:uh0*zzr ai2.i0f 0.15 m from the wire?

  A high power line carrying 1000 A generates what magnetic field at the gr y y3 jy3z;a2) n1 f7x3wnmh:+ytblcteound, 10 y23 byn3xym)fw3 ach+t;l 1j: eyn7tzm away?

  How much current must flow for*tbkk/l+e3f dd8 k9 hj $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long straight wire carrying a current of 5.0 A is the sgl0oc hai8n)ig,f (6magnitude of the magnetic field du cil)8(,og gas0 ih6fne 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 oppfu-6y)gkpbjujhu d08k9g10dosite directions. They are separated by 40 cm. Whad j6kf yd 08-u90hup)gjku1g bt 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 other?

  Two long parallel wires carry currents of 2 z0o49xn4.h3cnjq xk x0 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the magnetic field midway bexn4xj9z0x kqc.h 4o 3ntween the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite dirk/+,g6d br95rcrbjfvtb d8 a5)-xcp kections. The wires are separated by 0.20 m. At what point between the two wires are agt5)fv r pjbcrkdb d586b,-9x+rk/c the contributions from the two wires the same?

  Four long parallel wires each carry 2.0 A in the un+ y4-ao8ajcsame direction. They are parallel to the 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 wycoj+-8a4nu a ires experience due to the other wires?

  Two long parallel wires carry currenr 5(7khk t7qabts of 5.0 A and 8.0 A in the opposite direction. The wires are sepa5 bk7hqat7kr (rated by 0.30 m. Find the magnetic force per unit length between the two wires.

  What is the magnetic field at the center of a c0af c pp4cn:/rircular loop of wire of radius 4.0 cm when a current 04ra:fccpp /n of 2.0 A flows in the wire?

  A solenoid 20 cm long is e9fh4: ub b+zyquz52cwound with 5000 turns of wire. What magnetic field is produced5qz+z29 4yfh:uu b bce at the center of the solenoid when a current of 10 A flows?

  A solenoid with 500 turnhokz5+sp4 7w hs is 0.10 m long and carries a current of 4.0 A. What strength of magnetic field will it ha k5w7s+oph4hzve at its center?

  How much current must pass through a 400 turn coil 4.0 cm long to generate a 1.0af wze*cfii)8v ,3- xe-T magnetic field at thv)e*fziwf3a-x, 8 i cee center?

  How many turns should a 10-cm long solenoid have if it is to genj*teisy7z) (p erate a $1.5 \times 10^{-3} \; T$ magnetic field on 1.0 A of current?

  What is the magnetic moment of a rectangular loym vkp) :z406wxzct(6a*dmiyop of 120 turns that carries 6.0 A if its dimensions are 4.0 cm x 8.0 cm? )victpkawzm:6 0z (m 6x*ydy4

  A circular loop of wire of radius 0.50 m is in a unifoq yrmam8r4p850o wdmr-j /g 3s,vk2gzrm 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 perpe4kr 8morjmwqdp/v -m0zy8a g3s,r25gndicular to the magnetic field?

  A circular loop of wire ofoe3y q::c(s vrcazb0) cross-sectional 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 2xp9 th)-+(jzg sb+z-dfg ohxmagnetic field of 3.5 T. The loop has an are9g2j z p-h-oszgd+f+xx tbh ()a 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 uniform magnetic fijn(97yo sfru 5eld of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane of the loo7 fnu 9jy(sr5op is parallel to the magnetic field?

  A circular loop of wi27c3g rbg1p szre 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 torqu1zr b s73gp2cge when the plane of the loop is parallel to the magnetic field?

  A circular wire loop oq.o ,8:pudtnju yj .+kf 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 speedl0u3a6m mr-yb 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 ftg+i/42s2 q)f --omogn kpxflocity $6.9 \times 10^6 \; m/s$ 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 alf3-2/n an ek,f*hzuz x-; nb.c7peifnd then moves into a magnetic field of 0.040 T. What is the radius of the pro k,fl 3x*nu-i7pcb-zfa2 zehn.efn; /ton's resulting orbit?

  A proton is accelerated from rest through 500 V. It entery/t :rex d11(o zod:rcs a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Determine the radius of the path it f1zy:: /tx drcroe(1doollows.

  A beam of electrons is accelerated through a p2t2 vrxln3y;x otential difference of 10 kV before entering a velocity selector. If the B-field of the velocity selector has a val;2yr x2lx3v ntue of 0.010 T, what value of the E-field is required if the particles are to be undeflected?