If the north poles of two barr 5iu4 n+e tkjwz/288owuiv8-i jn (uy magnets are brought close to each other, the magnetu /vniunt2(k-5 +4u w ore j8iz8w8jyis will

  If the south pole of one bar magnet is brought near t(.fflgix hflw8m n0*-1:ej pthe north pole of a second barefgx:l(0p .n1hfjt- 8iw *lmf magnet, the two magnets will

  If a bar magnet is divided into two equ - zripv2w*oy892kmikal pieces,

  The Earth's geographic North Pole is magnetio8npg42q+ pha cally a

  The south pole of a magnet points toward the Ea6 cymaslh /.lbh32jt ew;)rw-rth's

  An electric current pm86; yr yvlfclb;: ln,roduces

  Which of the following is correct?g( d5f.3r5pebuvp6 sv

  A vertical wire carr5- s 46fzihf-( wnqdlmies a current straight down. To the east of this wire, the magnetic field poinn zqil6h-5dw(4-msffts

  A horizontal wire carries a current strai. kbl-)dwrezwxd 4 0x1ght toward you. From your point of view, the magnetic field caused by this curdbe4).0r lz1- xwwkdxrent

  A current carrying loop of wire lies flat on a table*8 au,h( p oxs)+yxcjc top. When viewed from above, the current moves around the loop in a counterclockwise sense. What is t)(pa8s jxc xhou,+cy*he direction of the magnetic field caused by this current, outside the loop? The magnetic field

  A current carrying circular loop of wire lies flat miv v7 wo.;pn9t kglhso q6qa0)q* 9t*on a table top. When viewed from abo)nw qa v9 * qvqtto7g;.6 *is9hmklp0ove, 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 magneti4cn6iz pt+, t)1prmo lc field is the

  1 T is equivalent to0ne,n2iycmp3 he 60ti

  The direction of the force on a current-carrying wire in a magnet c4hkfzxhz50)h*p5 6ayc e,r eic field is described by 6)4hke f 0xzzy5hca *pc,re h5which of the following?

  The force on a current-carrying wire in a magnetic field is the strongyod9zbo w 9u;2est when

  The force on a current-carrying wire1lnyyz 2c9yl k9( n7zr in a magnetic field is equal to zero when

  A vertical wire carries ,9ceoxr7mt 3ha current straight up in a region where the magnetic field vector points due north. What is t9t7 m rchx3,oehe direction of the resulting force on this current?

  A charged particle moves and experiences no magnetiu3rq28u ;jmf f a8w+vac force. From this we can concvuf;+3ujm 8aarf82 wq lude that

  A charged particle moves with a constant speed through a regij 0sf ks;d9 :bz.ib id8il3cs3on 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 p80sbdlf kd:isi 93csz;3bi j.article moves

  A charged particle moves across a constant magnetic field. T4d9/y t8wf/,ut 9vtxwiel4ye 2)dr0(r vazkrhe magnetic force on this parrtkyext2rt40,lwuy 8we// rfvdz4 9)via9( dticle

  A charged particle is injected into a uniform magnetic field sus9xmx0q ic)oz1uw83d )neo3wch that its velocity vector is perpendicular9mw)38c uo)w1 x ns3ozeqd0 xi to the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in a circul) ei q,0xxsry v;s(*pjar path in a uniform magnetic field. If the particle had been trav xs0siyjp;e) r v*x,q(eling twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e travels in a circular pat qaz x(2.x/6xrb7no h-)q goulh in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of the circular path would hav/z q lruo2.g7h(xnxqb-)6 axoe been

  At a particular instant, an electron moves eastward at speed Vmwxmw r-: r pms-s268g in a uniform magnetic field that is directed straight downward. The magnetic force that actsr-s2 :86msmx pwr g-mw on it is

  An electron has an initial velocity to the southtsb :-; w+dt-he)cb xp but is observed to curve upward as the result of a magnetic field. The dip -: +dx-hcbesbwt; t)rection of the magnetic field is

  An electron moving along the +x axis enters a region where them:rf vd-0wlm os1+:vvbb ./lpre is a uniform magnetic field in the +y direction. What is the direction ofb vvwo:1 f mb0p./sdll:-mr+v the 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-c9ou(sr qh (hjhh )ry;-arrying wire is

  At double the distance from a long current-carryi/ -wdsb--d0 o4d/ gws 0wlzrhjng wire, the strength of the magnetic field produced by that wire dl-d4- z0rwhjo/dw0/gd s b- wsecreases to

  Two long parallel wires placed side-by-side on a horizontal table carry i -) pcaodtli (3edjo cr7g;+wq6 g;h:pdentical size currents in opposite directions. The wire on your right carries current toward you, and the wire on your left carries current away from yo : ec +pwl-7hagj)6to;3;qorcigdd p(u. 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 tamm9k 4k1- to lwfnyy;)ble carry identical current straight toward you. From your point of view, the magnetic field at the point exactly betwe41nty9)o kw -mfkmy l;en the two wires

  Two long parallel wires carry equal curxbmo6 c/.dd89ahqw od90e3 jhrents. The magnitude of the force between the wa9.bcd0odew9 xqjo6/hm38d hires 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 k4q1i pzctgym4vxlbi x+7hso:0 * h5 -proton moves toward the east alongside and just l b41yhq mgi h-sx0x7:o4 z+vkt*5icp 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 cury *4w s55bjjlqrent toward the bottom of the page. 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 yjw* y55qjbl 4sour right?

  Two long parallel wires are placed side-by-side on a horizontalu*n fh u;fl(3b table. If the wires car;luh*ubn( f3 fry current in the same direction,

  Two long parallel wires are placed side-by-side on a horizontal thl/v5jrxud*8 a 1 qtnghn :xf,b, 5xt1able. If the wires carry current in opposite di,g1v5at * h xxl:tqn nr,j5f ux8dh/1brections,

  Consider two current-carrying ci*3pyksa+yser :r 6v;q rcular loops. Both are made from one strand of wire and both carry the same curr:;s y+veqry6aps 3* rkent, 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-carrying circular loops. Both are made from one strand ofs77p/o 0v ojle wire and both carry the same current, but one has twice the radius of the othero/7s0oe7 lv pj. 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 o mbadlh2 708)(khchqhccurs when the angle between the loop's magnetic moment and the magnetic fihq)0hb 2k8c dhlmah(7eld vector is

  When placed askew in a magns se 0hg1t64-aagrh+ r;4dr.gxet,eletic field, a current carrying loop that is free to rotate in any direction will expe 1ah rd;g gglrs6eh,.4 -r0tsx etea+4rience a torque until its magnetic moment vector

  What fundamental fact underlies the operation of esse0 owq5eu37g2t;jnlx z iy xlf ,ac(0j9ntially all electric motors (735la;0fxxj i9t2 cul0n ,wjyozeg q?

  A circular wire loop lies in a horizontal plane on a tab4p ib*aouh3zjx :-) oale 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. Whicoj)xoa3zu :hba*i p -4h 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 c +kmc 1znjxk+xaj+5.nharge 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 1x+nmz +.na j j+cx5kkperpendicular 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 par.oc *1 vnaao z4lh2q+f8 jlv9ssing through 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 magnituaznvojhlr*a4o9.+l 8 q 12vfcdes 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 unifos/ *d8f t 0(typtrl5ymrm magne/5pmry8s(l ytf tdt* 0tic field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current ofl f/ uarsj,8q8 10 A in a direction 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 A when it is plai/6tijh179+slfy tt. o;pm ;mkr gg z(ced in a magnetic field of 0.020 T? The wire ma yt+mr(i iz6k;hg; t1stg.o/ 9l mj7pfkes 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 andv 0uc19kq1 amc is in a magnetic field of 0.10 T. What minimum current in the rod is needed in order for the magnetic force tcva9m1 uq1 0kco cancel the weight of the rod?

  A stationary proton is in a uniform magnetic field ofbr96px8qme ie. lny ;kd55 ;sq 0.20 T. What is the magnitude of the magnetic force on th55xe el6dsq ;ir;ynbp8qm9. ke 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 b;iqm9j. aiy( 1x bl6ra 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 speed6gvxbfvg;rl9a4 o9t+v0 iz5).n-w xcc l e:g s 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 with spmm-:a-1jk - fdfn) gjum6 fl)p.sw n8jeed $4.0 \times 10^5 \; m/s$ 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 sfyobgxva3; 6.aw zy26 peed 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 aubj(ug/(3 apkq)k;qy q2dxh+2lgkhup 1 w;o1 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 o12l x5kro uql:f $3.0 \times 10^6 \; m/s$ 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 ca(to: lh2p(qnzk79mmx rries a current of 25 A. What is the magnitude of the magnetic field at a dis(qoln7p x9h :(m2kt zmtance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magnetic field at tha6jkf 2fh p 7l(o6abax6,a/f oe ground, 10 m away?6(ah2o l6a, pjf f/abaxk7o6f

  How much current must flow fue m2 sa2n4sp,or $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long stm-i 0e/qwpq; i11h ettraight wire carrying a current of 5.0 A is the magnitude of the magnetic field due to the wire equal to the strength of m1qi i/ew -e1 0tq;phtthe Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents of 10 A in opposite directions. qx rr)t 3zo1d3They are separated by 40 cm. What is the magnetic field in the plane of the wires at a poin 3xz)otd1q3rr t that is 20 cm from one wire and 60 cm from the other?

  Two long parallel wires ctsukh e.bs3 d 1cz(.+ 3ugpvh*w5he8 barry currents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the magnetic field midway betwg usc*e.5hs. (be p3b hv1twh8d3 kz+ueen the two wires?

  Two long parallel wires carr* 9u*gl8kl 1-toi:p9b(rb kqdxas9eaag:sz +y currents of 20 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 contributions from+t1 zgesigqak* :abu:9x8 9 r los*9pdklb (-a the two wires the same?

  Four long parallel wires each carry 2.0 A in the same direction. They are ++o+hyzmd0m01 chgk uparallel to the z-axis, and they pass through the corners of a d+cygho0+1ku 0 mhz+msquare 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 the opposite directf 7czy+;o2phkre x4v 4ion. The wires are separated by 0.30 m. Find th ; ye4zv4+cfrkp7xoh 2e magnetic force per unit length between the two wires.

  What is the magnetic field at the center of a circular loop of wire of qx lq, kd6ocnov02m kjc6 62r+ 1 )a-pna8ewburadius 4.0 cm whdw 6 kp1r6 cb-o,jv nmana0cq8ul2+ 6)eqxok 2en a current of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. What magnetic field is+6yc;vdx 2 (d oanijn7 produced at the center of the solenoid wh 6o+v 2dcnyni7d(j;xaen a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and car-ci;h7+ l 5by ags6ds8ezuq0 uries a current of 4.0 A. What strength of magnetic field will it have at i08lus6+dbc ;7ze5augh sy-qits center?

  How much current must pass through a 400 turn coil 4.0 cm long to genesyq1uq*46 cxies.ipo jfx.d(x(()8.jqc ree rate a 1.0-T m*ce(4 s)o.8(ijc.pe1dxerxx( q .6qjiqf ysuagnetic field at the center?

  How many turns should a 10-h7)6 cu(gfiiucm 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 lmk1gp6npfi;vaan- - c93y r+eoop of 120 turns that carries 6.0 A if its dimensions are 4.0 cve-1ik+ ypag rmp; - fa93nn6cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic fielso),z8tnjyjf+z e ,/rd of 0.30 T. The current in the loop is 2.0 A. What is tt, ejozyr,sf+nz8 )j /he magnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-s8ikzdk nz)s 3-;1mtb dxxl)k( ectional 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 xu * (k-lytg,gu l8b+tfir),oa current of 2.0 A is in a magnetic field of 3.5 T. The loop has an t +k fur-(tll,g* i,b u8oyxg)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 uniform magnetic;nvfpd1t7mi+cm v3 r je 50e6g field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when thet57m 0i6 ve3d;mcnf +1jpvrge plane of the loop is parallel to the magnetic field?

  A circular loop of wire of radius 0.50 m is in a uniform magne x7rx 3 7pdx+:egiua;h6;ibkutic 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 magnetiihu+pxr:uai;37xk ;gb7 x ed6c field?

  A circular wire loop of sb: y:qni)k dhia-03s 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-c0,: iz sezq5psharged particle (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 veloci z.xckcic1jm: 1dif/*ty $6.9 \times 10^6 \; m/s$ 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 thrntfnhi z(83tf r-5 b8aough a potential of 1.0 kV and then moves into a magnetic field of 0.040 T. What is the t5 -tahrb3 8(ffzn8i nradius of the proton's resulting orbit?

  A proton is accelerated from rescc3i xeaiws.+8766 rpz5j r brt through 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Determine the radius of the pawr i.e 35s 6aixbrrc86+j7zcpth it follows.

  A beam of electrons is accelerated through a potential difvk,ol oqsej+5)kpsu-)+ ls/ 1uwyzt -ference 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 E-field is required if the p/+ kql1lwsp s+ytou-)) szkj,u5-e v oarticles are to be undeflected?