If the north poles of two bar magnets are brought cac9s8 lin8f q.agou578lo.r 3iqw 0tvlose to each other, the magnetaocw.8li .38n to590vlqgq rufas i87s will

  If the south pole of one bar magnet is brought near the north pole of a secondc-i3;j)g (j:o )uagvi2tkwr l bar magnet, the two magneta ) v(:3gi lwrt)j 2u;kjcgi-os will

  If a bar magnet is divid5a6 az3n3s jdjo(cs n+u.ibhn9 o:b6n ed into two equal pieces,

  The Earth's geographic North Pole is m3;cht5(3mc2 l yq4*we qsbctn7r; pimagnetically a

  The south pole of a magnet points toward the Earth9 m2nabum39es 's

  An electric current pros3.2 wlvz:jyi (pr :ttduces

  Which of the followi3 cu,1jvz-oc )sg+n + fibafv8ng is correct?

  A vertical wire carries a current straight down. To the east of this wire, voxdim;8lv6 kek9f xm a;5/;xthe da;f9eox;; 8 /mvv6xkim kx5lmagnetic field points

  A horizontal wire carries a . 8dgu+pb(jy wcurrent straight toward you. From your point of view, the magneticw gju8dy(.+b p field caused by this current

  A current carrying loop of wire lies flat on a table top. Whrg/w1ze1 ybi (en 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 magneti1wbgy( zei/ r1c field

  A current carrying circut)p9j r 4y5dfjlar loop of wire 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 current, inside the loop? The magnetic9d) 5ryptjjf4 field

  The SI unit of magnetic field is t.c5ig2ua bgxe ;s3. xzhe

  1 T is equivalent toad2,su:5b xrm

  The direction of the force on a currem3vr/thi w -*tnt-carrying wire in a magnetic field is descrit/rvh*-t wm i3bed by which of the following?

  The force on a current-carrying wire in a magnetic field is the stu. fm1 qzn4d - chf:7p6bo9wtorongest when

  The force on a current-carrying wire in a magnetic field is equyi2u-qd ) nas;0lwx s,al to zero when

  A vertical wire carries a current straight up in a region where the magnetic fi: w-mhynfva;;kj:rafk1(cca, c j- r -eld vec w :rn ck-fkvh j,ya;c;a:-jf-(ar1mc tor points 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 can bv0.yjp :k s*wlt(3rp; x qs-hconcludejv:qpxs(r yp- kl* h s;3b0.wt that

  A charged particle moves withnqdiz wkrmk)i p;as3d m*d*(+d) r); cn rx7g2 a constant speed through a region where a uniform magnetic field is present. If the magnetic field points straight upward, t( i+gnx7dc d i2ad ;r)dr*q)rs mz*;mknw )k3phe magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constant magnetic field. The magnet:xzq7q-y/ vku ic force o/ :y7xuz-qvk qn this particle

  A charged particle is injected into a uniform magnetic field such that itsqp)0u.st2 zxlqg*tzpbk . 1r8 velocity vector is perpendicular qk 18 lp z0u)g2sp.xqt*r.ztbto the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is obseri1)w r,w +lb0qqa4f jdved traveling in a circular path in a uniform magnetic field. If the particle had been traveling twice as fwlb d+qr qf),0wia4j1 ast, the radius of the circular path would be

  A particle carrying a charge of +e travels in a circular path in+ c8yjzc,1n3ziwiw 2 d a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of the circuzww y zcd1in,+83i 2cjlar path would have been

  At a particular instant, an electron moves e 7yjrjb-o9fq5i-2b ba astward at speed V in a uniform magnetic field that is directed straight downward. The magnetic force that acts yrba -2 bf9obijq7-5jon it is

  An electron has an initial velocity to the south but is)dt2g4psen9 zj -5 hspw/;vo efm22vt observed to curve upward as the resulpegnpfo9) ;2vs 2zvmted /4- jt5 ws2ht of a magnetic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a region where there is a un zp 7;hfzqj);sd9x vg*iform magnetic field in the +y direction. What is the direction of the magnetic force on the elect g dp;zfzxs9*)vh;j7qron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced by aba:;nd+a7k4te i .rzv long straight current-carrying wire is

  At double the distance from a long current-c f-rq0*l tcw6cqdb,i6 arrying wire, the strength of the magnetic field produced by that wire decreases tr, cwt0bcl6qf6-i*q d o

  Two long parallel wires placed side-by-side on a horizontal table carry i dy.mvdcl)+b33eixc/dentical size currents in opposite directions. The wire on your right car y3db)c. lcxm/v3 dei+ries 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 wires

  Two long parallel wires placed side-by-sidmpr+prxe0xm1s ,1tnk wl2q-8;dn4ey e on a horizontal table carry identical curredx tr10 wnye q4r ,mnpmxsp8l k+;-21ent 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 cler0gs. uktvf,nxr 8 vivfp3; b(v7 v5rl5)m9urrents. The magnitude of the force between the wires is F. The current in each wire is now doubled. What is the magnt 8vvslubf vre(7rlm, p55vgk) xfi ;0v 3r.9nitude of the new force between the two wires?

  A long straight wire carries current toward the east. Ajzn;fbs. d j0-( 6ykxr proton moves toward the east alongside and just south of the wire. W;.rfjx(06 zyjd-bsn khat is the direction of the force on the proton?

  A wire lying in the plane of the page carries ouf u3dp /2/-twu4vznu+ss 0va current toward the bottom of the page. What is the direction of the magnetic fous-u/ vft3uvp2zsw/ 40ou+dnrce 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-side on a horizontay 2/ :vwqn9aeal table. If the wires carry current in the sayw nav2 q9ea/:me direction,

  Two long parallel wires are placed syh4m)/b1: 9iwc k-mp np5mfol)axk 6pide-by-side on a horizontal table. If the wifxbkp/apim4ynlcm kw1- 9 p)6:o h m5)res carry current in opposite directions,

  Consider two current-carrying circf 1/.bglellq,ular loops. Both are made from one strand of wire and both carry the same current, but one has twice the radius of the otherf,qbe1l l./gl. 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. Bothojp,s a. atieqa,):* l8ggm0u,. eiwd are made from one strand of wire and both carry the same current, but one has twice the radius o) *auge,,qdsj, 8pg wa l:e.tomi.0 aif the other. Compared to the magnetic moment of the smaller loop, the magnetic moment of the larger loop is

  The maximum torque on 8wcrf8bbyd 9 yaz8sh4u5 6*oi a current carrying loop occurs when the angle between the loop's magnetic momeaszb9oyf5 ydc* i8w 8ur 8b4h6nt and the magnetic field vector is

  When placed askew in a magnetic field, a c b;7xgyuojbg jaqye1p, y-zk2d2j6*- urrent carrying loop that is free to rotate in any direction will experience a torque until its magnetic momeny gq j-o7 g1-2du xb,j6z ya2ep*k;jbyt vector

  What fundamental fact underlies the operation 2u7e jtx);dftof essentially all electric motors?) u2 ftjx7t;ed

  A circular wire loop lies in a horizontal plane on a table and carries s7u0 :ckz pfi*it +w7q)nc/ce 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 horizontef) cizt/7cq07*unkw :s+ cip al. 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 ac1 ad;mvhxu0n0 yg1.yd celerated 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 pan1av0 g yhd;0y.1 dxumrticle. 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 e* z.b9(gaapdgr; 4unpassing 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 fieldp.r4u; gbgaa9dz en* (s. 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 t;4c8o*00c qr k y i 71bvbdjxshaf/ 1rux/vta1o a uniform magnet ;qb rb1h1rx 1tx ydv/4 cc8i k7ofsj*00aavu/ic field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a directionu,0nexg 6t f(l 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 wirej z0; 9m7n9.kmgemrbi carrying 5.0 A when it is placed in a magnetic field of 0.020 T? The wire m0;9mgi bkz m.jnre9m7 akes 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 and is in a magnetic f/cobfzgq vu 23:td( j:ield of 0.10 T. What minimum current in the rod is needed in order for 3( tqgvu2o:j/dbfc:z the magnetic force to cancel the weight of the rod?

  A stationary proton is in qk 0,+x+jzlgwyic1 hjyu ,8ak.p 0cj9 a uniform magnetic field of 0.20 T. What is the magnitude of the mayqjiju+g lak.+c0kh 09,p8jwxz c1y, gnetic 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 speedslqfc( 6v x( pahw5zn8bz7xw9 :1mud( 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 akao/ kf ;-v ws2b9f :lv3m5rsg 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 jx(h/dkh5 u.bz. a7xudue north with 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 sfxxk q3f86;v rpeed 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 speegdat878krw3 o d 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 speedc42x.ek b icviy +0m2p of $3.0 \times 10^6 \; m/s$ 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. Wf/kqvbif6pz/ f5 m i(*hat is the magnitude of the magv*qf if56kpf/bmi/ z(netic field at a distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates whatbh60c5p7o-acq x9kmb ww. c n) magnetic field at the ground, 10 m away? c6bwanh57pc wmokbx0) -q 9.c

  How much current must flow m (po*(u yporztge zj :m:o2.7for $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long . w v-aw:(ngspdu3/em straight wire carrying a current of 5.0 A is the magnituds /wm3(aw: nv-e.g udpe of the magnetic field 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 opposelp0xij.uiu8/e4p g6za9isz 5.k u q*ite directions. They are seqxg.i*e 0uiki lapjs48 6uup zz5e/9.parated 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 other?

  Two long parallel wires carry currey9e k:ooa1g,r r6tv* v 2:ndzxnts of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the magnetic field midway betweg:xa:nedory 6, v*vtor1 z 92ken the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite direp wnrmd-dvsi;)6c 43u ctions. The wires are separated by 0.20 m.; d6 u4vwspd3)rm-nci At what point between the two wires are the contributions from the two wires the same?

  Four long parallel wirec1: gf0hk4 p-n/lzl (e:bmglz s each carry 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 in b fc0(z 4g-:lngl:1ekhm/lzp 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 opp i4 ;nvtr +)7rwqc9 70vcrructosite direction. The wires are separated by 0.30 m. Find the magnetic force per unit length t7rc+r qi4 wc) v;cntru0v9r7 between the two wires.

  What is the magnetic field at the center of a circufrf i qq6p- y5(c r:w1s7lc7mhlar loop of wire of radius 4.0 16ms7fcwfriq q lcr(:h py-75cm when a current of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. What magnesu/8d4yfskd t.(h j1jtic field is produced at the center of the solenoid when a current of 10 A flokjd.j/4u 8(1sstf ydhws?

  A solenoid with 500 turns is 0.10 m long and carries a current of 4.0 A. Whaceofjgh2c0/0 t st2jc0o f c/geh0rength of magnetic field will it have at its center?

  How much current musouex8zf8qh / 6t pass through a 400 turn coil 4.0 cm long to generate a 1.0-T z6 qf8xuho/8 emagnetic field at the center?

  How many turns should a 1h6d to3 (vj fbkh,r0s.0-cm 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 of 120 turns that hpp.2qt7 .wd icarries 6.0 A if its dimensions dhtq72 w..ppiare 4.0 cm x 8.0 cm?

  A circular loop of wire xf q,w wsrnw bm-+5*x2of 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 torque when the plane of the loop is perpendicular to the magnet5 -*xw qbwnrwmx ,+sf2ic field?

  A circular loop of wire yhew25o 3ykru2 m40fxof 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 magnetic field of 3.5 T: )efy,0m/sh5j9o rrozcpp 1 v. The lo5 o /cr1s9rjp)zp,: vyfehmo 0op 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 raib k 6)0qey162g 70rnupw8 ldm vp*7c rob2klkdius 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 torque when the plane of the loop is p0k dy) n*qu2ml2 w kvr p8g76b1rpcolib6k70earallel to the magnetic field?

  A circular loop of wire of fn0fo 3cmwkv g)zco ),u 4fh1+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 torque when the planefw3+o), )z of uv4k01ncchmgf of the loop is parallel to the magnetic field?

  A circular wire loop9ptbew qq ox *hd9 p:,4mdh)2p of 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 spectromet skn0kmybqb0l *x 7).fer, a single-charged 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 velocim7hl0wz y6ef.u7x9a x/ac9g;o, dbsqty $6.9 \times 10^6 \; m/s$ 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 thr1 uate: l5y/ przdd1kuj1)e h:ough a potential of 1.0 kV and then moves into a magnetic field of 0.040 T. What is the radius of the proton's resultin/):ekdy pl5h1:au tedjuz1 1r g orbit?

  A proton is accelerated from rest through 500 V.j.1zkuk i3*m i It enters a magnetic field of 0k zmk 1ji*3ui..30 T oriented perpendicular to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potentiad. f:xt3*bunfz.s gh+ l difference of 10 kV before enterinuh ztd*b n.fs:g.3+x fg 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 particles are to be undeflected?