If the north poles of two bar magnetid kracz)v+ef 0,g22nv1cj-r9qm z ;ks are brought close to each other, the magnets wi+1j cv9 gvna z-er ,;q2ikdfkcr0zm2) ll

  If the south pole of one bar magnet is brought nenu jd6lvhj+t 6o1;6a;emj qx: ar the north pole of a second bq+n : 6;ejx1v lahmujo6d ;j6tar magnet, the two magnets will

  If a bar magnet is divided into two equal piefxkrh/riicaln 5:-j/b r,s)9ces,

  The Earth's geographic Noxjki9r-s r;83u5k/e xi+dpr vrth Pole is magnetically a

  The south pole of a mh5nhe4 oz- 7hu3jp a7dagnet points toward the Earth's

  An electric current +dpbg / jy)8v9:d ;ghn1r telkproduces

  Which of the following prvx +zz cbk /z1/z+pxma.,f 5is correct?

  A vertical wire carries a current straight down. To the east d xqksb ) ahc3u78g1m7o lz457us n(vkof this wire, the mas kck3 uunx basmg7dv o1q5h(784)l7z gnetic field points

  A horizontal wire carries a cugugbdym tnax;88:d); rrent straight toward you. From your point of view, the magnetic field caused by this cxdy8un ;gm gda :t;)b8urrent

  A current carrying loop of wire lies flaa /k vka*wd4i4t 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 current, outside the loop? The v/4ik kw*a 4admagnetic field

  A current carrying circular loop of wire lies flat onv3 5+fs+gg sq2jnexk+r r +li. a table top. When viewed from above, the current moves around the loop in a counterclockw+g3i v+fgrrkq + xn.5+s2e jlsise sense. What is the direction of the magnetic field caused by this current, inside the loop? The magnetic field

  The SI unit of magnekth,zw cy,5d7// q fxitic field is the

  1 T is equivalent toww8z4v j:4eah

  The direction of the force on a current-carrying wire in a magnetic fih6q je5 8yq+jmeld is described by which of8 jhq+eyjm6q 5 the following?

  The force on a current-carryingm+aovudv4 f3d48y. )9yban mh wire in a magnetic field is the strongest when

  The force on a current-carrying wire in a magnetic field is eah3c*w4a+k-ph ( ek3b8fiamz gi1k k /qual to zero when

  A vertical wire carries a current straight up in aqq0ddxgan x wc/yo2./ 9q t5k. region where the magnetic field vector poin5g0d.qaw xnxk tq29c.yq d/o/ ts due north. What is the direction of the resulting force on this current?

  A charged particle moves and experiences no magnetic force. From this we cxxqbgy a b3:5r4,kmd)an conc5:kr)xgbax b my,d 34qlude that

  A charged particle move j*nom.ina 5p:s 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 parjin.5*p:a m onticle moves

  A charged particle moves across a constant magnetic field. The mo* e fa(dqog5,agnetic force on thd*f o(ea5go, qis particle

  A charged particle is injected into ,f icngk7 ncy4 dl.30va uniform magnetic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring the4 3c,l 0vnk7c.igndyf particle's weight, the particle will

  A charged particle is observed traveling in a circular path in a univ/z 6(j0mwntvqs .1v uform magnetic field. If the particle had been travu(n0/.qzvwmtvj1 v6s eling twice as fast, the radius of the circular path would be

  A particle carrying a charge1kjw7altq(a3+ 7 uqs c of +e travels in a circular path in a uniform magnetic field. If instead the particle carried a charge of +2eaw+1 q7uq7(stjca 3kl , the radius of the circular path would have been

  At a particular instant, an electron moves eastward at speed V in a2ywwhq qf8618 y/fzzn uniform magnetic field that is directed straight df w2fy6 q wqyzz8n/1h8ownward. The magnetic force that acts on it is

  An electron has an initial velocity to the sou9*iw6s/z 01+e fkegeze+lh4 db)pdy wth but is observed to curve upward as the result of a magnetic field. The direction /wpfk1e dbyw6+g) hiz+ e sd9*zl40eeof the magnetic field is

  An electron moving along the +x axis enters a region whwdya5o zm* +j)ere there is a uniform magnetic field in the +y direction. What is the dir 5w+zjdaym)o* ection of the magnetic force on the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced by a long str 1,mgq+j6ezjsv yuy5ha sztj vz6*2( /aight current-carrying wire is

  At double the distancew-yu vqevn1tim;o8e)n6r , t4 from a long current-carrying wire, the strength of the magnetic field produced by that wire deq, un1iy wv;)o8t vm6tenr-e4creases to

  Two long parallel wires placed side-b luj5 pq9my abc6ny7n (1xz5i4y-side on 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 w5nuj1l an(c9z 6by 4iq5y7 xmpires

  Two long parallel wires placed side-by-side on a horizontal table carrz uy,-h vfyfezsr 0t- s/f1i nzu4qv/,e k20h,y identical current straight toward you. From your point of view, the magnetic field at the point exactly betwuhs 0s/k 40ytfv2rnez/y- vqe,- , z 1u,hfizfeen the two wires

  Two long parallel wires carry equal currentsqx mz0q5a4q uq st7n14. The magnitude of the force between the4q 5qm4q s07unxqz1ta 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 moves t6 0:o7lbi q7a .cqxsmcoward the east alongside and just south of the wirq7 sc0la mq7b: cxo6.ie. What is the direction of the force on the proton?

  A wire lying in the plane of the page carries a current toward t2v*p /tbwgx9m 4hk+s p2pvx 8k/h)naded q-y:he 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 w k2) 4 s9hbd :nvkp/gp v mtp-ax2h+d*y/8xeqyour right?

  Two long parallel wires are placed side-by-side on a horizontal table. pv7172lh(lsm)d6fl i72 *qymxm vbpq If the wires carry current in the samv7ps d26 hil)q yl2*(7fl m 7p1bvxmqme direction,

  Two long parallel wires are plwjlc;2vz*8 nr8n) fg caced side-by-side on a horizontal table. If the wire8lrvj82cgzn )*nc f ;ws carry current in opposite directions,

  Consider two current-carrying circular loops. Both are made from one strand 6i s9bb;zo0:mmvy, frof wire and both carry the same current, but one has twice the radius of the other. Cmfsyz;r9bbo,i 0:m6 vompared 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 stran 3y0o:f e rpqy(fu6p1yd of wire and both carry the same current, but one has tw16yqf pu3epoy f 0y(r:ice 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. syylf*z 4*pb loop occurs when the angle between the loop's magnetic moment and the 4.bp*y* zyfsl magnetic field vector is

  When placed askew in a magnetic field, a current carryin t*yfs paud8e3u 2fc7-3ipe9ig loop that is free to rotate in any direction will experience a torque until its magnetic moment vectoree9-p*ftp 2d fyi cuis8u73a 3

  What fundamental fact underlies the operation of e r)pb:x d d22yyjyp:g(ssentially all electric motors?:rxp2gyj y y:d)(pb2d

  A circular wire loop lies in a horio:8auk; sh*ked- ta4n zontal plane on a table and carries current in a counterclockwise dir4k:o ud ; kn-eatsh*8aection 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 spectrometer a particle of ma *)zc8hil:vxe .s dj5tss m and charge q is accelerated through a potential difference V and allowed to enter a mage)sz :d .jh5*cl8vxti netic 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 particleyo k(44k j +kn2h khl,+8rhl bvp6sqg9 passing through crossed electric and magnetic fields. The forceskj 6k +9poqsrhkgl ,nv l2(y4h+hb 4k8 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 directed to the north. What direction should the electric field point?

  A 2.0-m wire carrying a current of 0.60 A is orien.p( fpnyf1 m;ated parallel to a uniform magnetic fipy(p.m1 f;naf eld of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a direction ofgt tan x:c/(ac7f 7g4g $30^{\circ}$ 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 carryingo(b. h/z-ak ube v;- mwulz6;q 5.0 A when it is placed ibewzv./mq(ob u ;z; -k ulh6-an 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 has a mass of 0.050 xy-2cyo. cy0m kg and is in a magnetic field of 0.10 T. What minim- 02oycxy.mcyum current in the rod is needed in order for the magnetic force to cancel the weight of the rod?

  A stationary proton is pkfb(y- 5ci3osrwf12 in a uniform magnetic field of 0.20 T. What is the magnitude of the magnetic force on k-bfcip wsry (3o25 1fthe 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 ofu(3lg d,x 5grcfw/+9nys wbg/ $5.0 \times 10^4 \; m/s$ 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 speeu 1h0fq+;va mnd 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 syb)7d mgsznm9xg xgd:l /l-03u.jqb7peed $4.0 \times 10^5 \; m/s$ 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 ap.bjz* 2f-e6s ry3t lb 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 sg 8wqa0z)/a qosy hyz3(zf-7m 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 acceleration of the electron.

  A proton has a speed ubmsu25u) z5g9 j:gasqwit 83of $3.0 \times 10^6 \; m/s$ 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 magnitude ofg r*-a)mkf*thbtic isydx)5: g;n z-lbrf9 )8 the magnetic field at a dis c9-r-m)d hb:yr*axz kf) lit;b8 sftgi*)g5ntance of 0.15 m from the wire?

  A high power line carrying 1b bv5 uf(-,jhp000 A generates what magnetic field at the ground, 10 m awayfbub5 j, h-(pv?

  How much current must flowhp 9*cy21jq4 vfz)1 zkm kzoom. jv99r for $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a lif z9b;m4y* hdong 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 ;bzf y*m 9dhi4of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents of 10 A ,py2 5nccs/tlin opposite directions. They are separated bc,/pcy5n stl2y 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 other?

  Two long parallel wires carry currnbp+77 co(3e t uia;gaents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the magnetic field midway between the toep giantcba(u 73 ;+7wo wires?

  Two long parallel wires carry currents uxwfp rt l22y2 .w+kr8of 20 A and 5.0 A in opposite directions. The w.wfpx lru8y2 w+k 2t2rires are separated by 0.20 m. At what point between the two wires are the contributions from the two wires the same?

  Four long parallel wires each zr cu68d,p;n+ge(7gziv , uqwcarry 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 cm positioned in8 u,nvqc6zgu zpei+,( gr7 wd; 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 ( q:uyzdq3,xb 5.0 A and 8.0 A in the opposite direction. The wirxb3y d,qq(zu:es are separated 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 circular 1q fab/z+0;mpf+rztf,b2moj loop of wire of radius 4.0 cm when a cuq;b rf+z1 zf,o2jmbam+0/t pfrrent of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 ofc 0u.3a,uia turns of wire. What magnetic field is produced at the center of the solenoid when a currentuucia a0. f,o3 of 10 A flows?

  A solenoid with 500 turn:b v) ux(ugk*ms is 0.10 m long and carries a current of 4.0 A. What strength o uk*(gmux:v )bf magnetic field will it have at its center?

  How much current musp 0 5iifs5.fvat pass through a 400 turn coil 4.0 cm long to generate a 1.0-T magnetic field at the cenipsvf a.55 i0fter?

  How many turns should a 10-cm long solenoid have if it is to generahso,xn(v1 g n0e tm7g ).3khc/o y3mwwte a $1.5 \times 10^{-3} \; T$ magnetic field on 1.0 A of current?

  What is the magnetic moment of a rectangular ly*yq + *d.zuei* dmz1yoop of 120 turns that carries 6.0 A if its dimensions are 4.0 y+1yzqdz. * i**d umeycm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic field ji ozp50+x /niof 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane ofx / pijnzo05i+ the loop is perpendicular to the magnetic field?

  A circular loop of wire of cra6vxnc 8e trntl;v231(re)l zoss-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 o4czxd0m9*x p tc3l i7xf 2.0 A is in a magnetic field of 3.5 T. The loop h03 7*xlx4z i c9pxcdmtas 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 uniform magnet: v-rju-m3ft rre.sb2ic field of 0.30 T. Th- r.r3j r:v2ms f-bteue current in the loop is 2.0 A. What is the magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic 73a;nyw o/4txht+stv 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 i3t7n+ th/ ato;ysvwx4s parallel to the magnetic field?

  A circular wire loop of g2;gd/x8(s hkccyv ,darea $0.25 \; m^{2}$ 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 speyi a6:mzc l0pc77oh/ked 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 veloc2vtkr j nx+gt2k8c/;*ju5ams ity $6.9 \times 10^6 \; m/s$ 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 kpxj /k(stm4rnt ov*zr3a3 y2-an 5v)eV and then moves into a magnetic field of 0.040 T. What is the radius ofpraaj3vs (5 xt3-4v ek z*ntyrno) 2m/ the proton's resulting orbit?

  A proton is accelerated from resaoyhz)kiv, xd9i lc/+.(2ay0rjso)l t through 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction ofy v s,ay+rlh/i90i)2.x)j ocokd( laz motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potential dln n+8t,h-u fmifference of 10 kV before entering a velocity selector. If tnnht +,-mu f8lhe B-field of the velocity selector has a value of 0.010 T, what value of the E-field is required if the particles are to be undeflected?