If the north poles of two bar magnets are brou,9f4-lccp*u -- fktvt rv9+c h8crqchght close to each other, the magnet-cf vctucl-949t8k*pf,+c rchh-qrv s will

  If the south pole of one bar magnet is broughykf*;i96 mge m)hvyn az1p.7 gl4 jiq/(7gouht near the north pole of a second bar magnet, the two m m6f yjyhnpvig(kego7 /hlq1u).7z9; * ag4imagnets will

  If a bar magnet is divi2z:v8rv 2 c4sugxfc* kded into two equal pieces,

  The Earth's geographitl .7z77y) najzl:hkac North Pole is magnetically a

  The south pole of a magnet points toward the Earsgrjsc /b+1ap9j8ia..da lk li;9+b hth's

  An electric current producesw fqt)b.q -f3a

  Which of the followinp j. j.td tkdzz5*r:0rtfd0tnn.eo5+g is correct?

  A vertical wire carries a current straight down. To the east of this wire,0xke* g ,w1j z:ryi,xw the magneticxrjx ,k 1zweyw*gi:,0 field points

  A horizontal wire carries a curren q-qa- lg5dz*nt straight toward you. From your point of view, the magnetic field causqal*zg-5- dn qed by this current

  A current carrying loop of wire lies f;1n.*g.b n2z*r1qlo wla( vwetm hue7lat 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 loopnuvm(;oe2e w.7 z at1lwgqn.b*r* 1hl? The magnetic field

  A current carrying circular loop of wire lies flat on a table top. When viewe-vot+iti8 gv0r /y ,ypd from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magneticpv0-tvyrt8, /g y+ iio field caused by this current, inside the loop? The magnetic field

  The SI unit of magnetic field is thhg*hhy n 59,jhe

  1 T is equivalent to f0a1*9 kujvzs

  The direction of the force on a current-carrying wire in a magnetic hj a-y4-;a9ueyy k cp(field is desc c9j;yk(-pu yyh-a4aeribed by which of the following?

  The force on a current-carrying wire in a magnetic field m dyfrz.3q) e;+ hhas-x .meci2 nsm;7is the strongest when

  The force on a current-carrying wire in a magnetic field is equal to zero whe g7/f8nftkpi(o0n +lbn

  A vertical wire carries a current 3).jq; ckl7qgs9po gsstraight up in a region where the magnetic field ve.37gk qsj9 q l;scpo)gctor points due north. What is the direction of the resulting force on this current?

  A charged particle moves and experiences no magnetic force.rlkv i e181fm) From this we can conclude e l8m1rf1k )vithat

  A charged particle moves with a constant speed through a regi-(q v*4h;.uv+4mp l xhzq3poj. ve6sb8tugycon where a uniform magnetic field is present. If the magnetic fiq44s8vu.mp(;qbpcevo6+y 3vtgl z.xhh *j u-eld points straight upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constant magnetic field. The magq*g qg66:p;bs*zrnv jnetic force on this rvsn6zb gqpq*6:*;g jparticle

  A charged particle is 2 n(tp2)y ncdw0q( *q ju5y/cmh6riqwinjected into a uniform magnetic field such that its velocity vector is p(q d nq*njcc5t hiwr6wyyq um/(22p)0erpendicular to the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in a circu06el yz r2xpe ,y2th-glar path in a uniform magnetic field. If the particle had been traveling twice as fast, the radiueep y06z2 xlhyt2rg,-s of the circular path would be

  A particle carrying a charge of +e travels in a circular path in a uniforxmzi. cpnjjvp +3;ot ;x6;ad w4, p:tgm magnetic field. If instead the particle carried a charge of +2e, the radius of the circular path would have + cttpj; 4ogi:np6;3pam xzdw;v.x,jbeen

  At a particular instant, an electron moves eastward at speed V in adr gc5jj5)tk/6vw:2xywn r*0)n tvi l uniform magnetic field that is directedyw2)v50: d*6ct 5wtlnr xj)g jv/irn k straight downward. The magnetic force that acts on it is

  An electron has an initial velocity to the south but is ob14h5rdxb f -vm lwz.v6qfr)2fserved to curve upward as thlqx-hm vfrf f2b51d r) .w6vz4e result of a magnetic field. The direction of the magnetic field is

  An electron moving aloncf0 ypwo/vnc4fn 9+qo +*x(x zg the +x axis enters a region where there is a uniform magnetic field in the +y direcwp(x *fcno z4v x+y+f9n0o/c qtion. What is the direction 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 straight current-carrying rnse8nwjgrk -q xboc)v; -;j:9dby; / wire is

  At double the distance from a long current-carrying wire, the strength +m0nmw33r cwi of the magnetic field produced by that wire decreases twci m3+m 3w0rno

  Two long parallel wires pllhyvflzc4g j 7k 5e- 3l3b.h1naced side-by-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 carb 54c.he7 zl1ylv gkjh-n33lfries 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 identicahz-1*:f7p wjet rm e9a19-7hza p :mewejt f*rl current straight toward you. From your point of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal currents. The mtziv5aaz +pmg. 5 )km3agnitude of the force between the wires is F. The 3agv t)5.p zm iza+mk5current 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 towars zzh( h5/-p m+1svj3uvd4)c lqtjz2 sd the east alongside and just south of the wire. What is the direction of the vh v/ss3)szhp1zcj z (m452t+jud-lqforce on the proton?

  A wire lying in the plane of the page carries a current to 3hg7cga)7a cgozqbbaa. l:/k t689ci ward the bottom of the page. What is the direction of the magnetic force it prodg:la76qhcac b t8/ kbo g.za97ci3)gauces 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-side on a h1bz5tw ehaoyznmf)y.* *4a05evanw9orizontal table. If the wires carry current in thenvy mbeh a zty waae*1*.)94o50 5wznf same direction,

  Two long parallel wires are placed side-by-s+t5z/h;mi ksn 5f4m,8 ncub axide on a horizontal table. If the wires carry csmu ,fbzk/mx5h5+i n4cn 8;t aurrent in opposite directions,

  Consider two current-carrying circular loops. Both are made fq6t u 6p t8((tsnix3ucrom one strand of wire and xt 8putui63 qsn(t(6cboth carry the same 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-carrying circular loops. Both i hxm..3w8mhtt i6oq.5ynu/iare made from one strand of wih8 5..tt.ion m6i3iyu wm/qxhre 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 occurs when the . j6o)x4q 0q)qh,rai1i oqfdx;r: b26lmw ghlangle between the loop's magnetic moment and the maqd6o4 hqhx r, 1x b2r6)qli.0;qlw)mij:of gagnetic field vector is

  When placed askew in a magneticafzu-7jwaf4-d lk f)6 field, a current carrying loop that is free to rotate in aaakj6dfwf )zf4-u 7l- ny direction will experience a torque until its magnetic moment vector

  What fundamental fact underlies the operation of essentially all electric moft vvlldm99./+ /q ubwpdb0 7ktorsv+ldldkwfb/m9v/u90 t bq p7 .?

  A circular wire loop lies in a horizontal plane on a table and carries curre58n 2jrg4v zewnt in a counterclockwise direction when viewed from above. At this point, the Earth's magnetic field points to the north and gv54jn e8zw r2dips 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 acceyi8ce(u; afsn3fj,r/2 m :l yflerated through a potential difference V and allowed to enter a magnetic field B, where it 2f uay l,8m(f:3 nf/ cj;esiryis 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;gt 7c,as qxg9 charged particle passing 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 magnitudes of the fields. In a velocity selector, the particles move toward the east, and the magnetic field is directed to the north. What direct s7qgtc 9x;ga,ion should the electric field point?

  A 2.0-m wire carrying a current of 0.60 A is oriented p,ys ;x3l hpme,arallel to a uniform magnexy lhs,;,p3m etic field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a direction o yknc0w f4il: ta3z(+vf $30^{\circ}$ 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*x pu7v3z*rmr it is placed in a magnetic field of 0.020 T? The wire makes an a m* pxz*ru73vrngle of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long has am4nihpp *oe in ::wr7mgv)o ++ mass of 0.050 kg and is in a magnetic field of 0.10 T. What minimum current in the rod is needed in order for the magnetic force to cancel the w h mwvn*og ei:rp+m)i n:4p7o+eight of the rod?

  A stationary proton is in a uniform magnetic field of 0.20 T. Whaod:3 kkhlx76o t is the magnitude of holx736kdo:k the 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 wita 2yc.h19rfy6-hpwvc)(kb edq,qve 1h 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 off/k 6q,ntacp1qfs 5a: w cagd53.l, speed 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 j 6gcw3)pdpg ex/g7p4speed $4.0 \times 10^5 \; m/s$ 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 av +r,i cgam *h:ymhj-9vlg /9n 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 speew 5jm1z nlp-n1e9i*ohd 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 of ;h)9zqwn8g*b nuay 3q i(x.ji $3.0 \times 10^6 \; m/s$ 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. Wh)q5xi*s tm m(wat is the magnitude of the magnetic field at a distance of 0.mxi(*5 )smtq w15 m from the wire?

  A high power line carrying 1000 A generates what magn6a6megwput .z +c nec)tk6i *8fzd94x etic field at the ground, 10 m awu eidemg9 tx)c 6.8 w64z* kfnz6pc+atay?

  How much current must flow fouydoey8.58 6rbzf+au8 pe (se r $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long straighw0uzucogr ,3-*z i/ep t 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 3i u0 o -/zg*,reupczwof about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currentamh:( m/q)x). r/oxw f q8chsts of 10 A in opposite directions. They are separated by 40 cm. What is the magnetic field in the plane of 8q aq / h)w.t:(xcmxfh/oms r)the wires at a point that is 20 cm from one wire and 60 cm from the other?

  Two long parallel wires carry cur*3 )szz pyqd9krents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the magnetic field mq *)yzs zk39dpidway between the two wires?

  Two long parallel wires carry cn;hcm-6a/s zp0 5jzr 7qp7fxwurrents 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 contrhsmr- c6z;fwzn/77 5qjx0p apibutions from the two wires the same?

  Four long parallel wires each carry 2.0 A in the same direction. 3j2 odthh0 onpw-3n6t They are parallel to the z-axis, and they pass through the corners of a square of side 4.0 cm positionedjod3hw-o03 tpn26 nth 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 op( ijcnp)9 y, k48rbmcbposite direction. The wires are separated by 0.30 m. Find the magnetic force per unit lengthck) i,( mny cpbbjr984 between the two wires.

  What is the magnetic field at the center of *ugobn-c:f0wkg: oi1a circular loop of wire of radius 4.0 cm when a current of 2.0 A flows in thig :o*wk-bg0 1 :nucfoe wire?

  A solenoid 20 cm long is wound witrf tupk hgaa;nnwe68f -03/j:h 5000 turns of wire. What magnetic field is produced at the center of the solenoid when a currf j/kat8:phu6 ren0fa; -3n gwent of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carries a current of 4.0 A. Whf8hd-b.lj m6nb2 -i-opivh7a at strength of magnetic fi- 87j6ba-2-.bov flndi pimhh eld will it have at its center?

  How much current must pass through a 400 turn coil 4.0 c ymma/8 e/ fp83m:sh1l;ld+t0zhtatcm long to generate a 1.0-T magnetic field at thy/a;l+t 1 :smp aft the3m80lch /z8dme center?

  How many turns should a 10-cmirw2f9rl:,x t 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 oa*dvu*fow f. fr6+ fx1f 120 turns that carries 6.0 v6wfu 1da fx*f+o.rf*A if its dimensions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic ftv;tjep k :spp( z(y hv55g ;-c2fvsd*ield of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane o jv-p;(cz:(e2 stdht pvvf5y5 gp*;ks f the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sectional area w u+gj3kk4 w s-hviqt; 1lyv8fi/;xi/$0.12 \; m^{2}$ 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 fielp ceq+q wgf5m a6r-u7x d92i3jd of 3.5 T. The loou gp7j5mar62cq3+-idx f wqe9p 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 iypqwf k4v: :7qs in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A.w:vfkq yq:p74 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 uniforw: xg/7 yh0r2 .b jygh-2fd2ydbazhi 3m magnetic field of 0.30 T. The current in the loop is 2.0 A. What is the mag7xz2w-gybh f2y./g hyr0:2dhij 3abdnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop of area a h3k.k( ux6 cu6dj9ko$0.25 \; m^{2}$ 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 or.clufsfm767dfl-o u . o;a 4particle (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 velom16ooaeez l63k8zm n7 city $6.9 \times 10^6 \; m/s$ 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 poten:3 vz uh*xwxm +qqy67rtial of 1.0 kV and then moves into a magnetic field of 0.040 T. What is the radius of the proton's resultx:y7+wu 3hvz 6r xq*qming orbit?

  A proton is accelerated0g:(5u9q g0a*5 qmwo1 ylnjclr6x qsj from rest through 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Determine the radius of the path it folq5nqqug g: 9om*clj 00 j1ys5ax6w l(rlows.

  A beam of electrons is accelerated t6e79mozpgf s :9zzl f5hrough a 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 E-field is requir:pm57fzegz 9zols6 9fed if the particles are to be undeflected?