If the north poles o2 po ,9,t/u geh8)j9,cs)lxgiwv slesf two bar magnets are brought close to each other, the magnets wilj 9 ,th9ls2peuow,lxvgc)/s 8e, gi s)l

  If the south pole of one bar magnet is brough(: f,o*nl-lh4t e12xpd cvlm kt near the north pole of a second bar magnet, the two magnets w:vlkm fl -d 2*(pc4xnto1 e,lhill

  If a bar magnet is divided into two equal pi/ :akvlzu: xn4d6t.gt;u if8 peces,

  The Earth's geographic North Pole is magneticallwj. goh p.hd-wn- x*e,y a

  The south pole of a magnet points to atmx+7t2zj 1rward the Earth's

  An electric current producesv;tl4 (vbgg +a frl0f:

  Which of the followin6zffgp tdxog/* :+tbl syy:44 g is correct?

  A vertical wire carri g7)m*d v:cgf k9n0lnmes a current straight down. To the east of this wire, the magnetic fimn7ggcn0)l : kv*f9dmeld points

  A horizontal wire carries a current straight toward you.g-g67 ,p4z36m8 nhnp k0stfwtfz x7be From your point of view, tm-03gz w68 7esnpptkzb gh6xft7fn, 4 he magnetic field caused by this current

  A current carrying loopc uu1u v +lrk+f.3o5vg 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 .+v1uv5f+lku c o3gur, outside the loop? The magnetic field

  A current carrying circular loop of wire lies flat on a table top.2ibd1 hu pek2nmu2+y5 When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the 2kh1ni52 +ydum eu2pbmagnetic field caused by this current, inside the loop? The magnetic field

  The SI unit of magnetic field is the :njj -c+my pazzaoc:0tg- .u4

  1 T is equivalent to8p3 gaqf)ri:4mm oq yij5x8-k

  The direction of theyfar 5m93(is f force on a current-carrying wire in a magnetic field is described by which of the fyrm i s3a9f(f5ollowing?

  The force on a current-ca)ysv l * i(fmtqo al4q+0vzv3 8vqy*.trrying wire in a magnetic field is the strongest when

  The force on a current-carrying wire in a magnet)wci1 qaz4.m 8dvx -me j1ll;qic field is equal to zero when

  A vertical wire carries a current straight up in a region where nb5rzsoh :;s qt+h64j b80x ztthe magnetic fie68b;:hsrnbh + oz0tsq4xtj5 z ld vector points due north. What is the direction of the resulting force on this current?

  A charged particle moves and exper )mfsd6)wopl5 iences no magnetic force. From this we can conclude thao )d6m5l)fspwt

  A charged particle moves with a constant speed through a region where a unifo,lcgb ewss9 5lh8n+ w*rl( cq3rm magnetic field is present. If the magnetic field points strai3 95bhq8ll g +rnlsswew(cc*,ght upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constant ma*xfq96yhcd r c293w imgnetic field. The magnetic force on this part99chq wx i2c3dr f*m6yicle

  A charged particle is injectfbax0 :8y.rfezc w*g 0ed into a uniform magnetic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring the particle z cxf0 b8faw:0eg.*ry's weight, the particle will

  A charged particle is observed tri7y*.eigccbxcgg9 7wsl t( : c yef,72aveling in a circular path in a uniform magnetic e cxwc iig*tf :ylgcy.79(gb2s7e7c , field. If the particle had been traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e travepl ks:av,eyu b/y, m*(ls in a circular path in a uniform magnetic field. If instead the particleae byl ypm/ usv*(k,:, carried a charge of +2e, the radius of the circular path would have been

  At a particular instan/kw-4 qb yr9wr3yv dc-t, an electron moves eastward at speed V in a uniform magnetic field that is directed straight dwrd3/ - bc wvrq4-9yykownward. The magnetic force that acts on it is

  An electron has an initial velocity to the south but is observed to;qn8h9wom1 of 1ltg3j curve upward as the result of a magnetic field. The direction o;9 1wogqo8ln3tm1j hff the magnetic field is

  An electron moving along the +xu/k; 7n.;)jjjy9syi f:zi mp s axis enters a region where there is a uniform magnetic field in the +y direction. What is the direction of the magnetic force on the electron? (+x to right, +y up,j/ ;sznysmif)iup y:;97.jj k and +z out of the page.)

  The magnetic field produced by a long straight cu.xo 4:pv*z0sg lacb 4g mo5nm5rrent-carrying wire is

  At double the distance from a long current-carrying wire, the strength of the mw)86o4d nu rtcagnetic field p4tu 8 cwrdno6)roduced by that wire decreases to

  Two long parallel wires placed side-by-side on a horizontal table car w.zxdf bv ;evt*l *dbgk;6 l n29etko-)iz7w2ry 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 mag9 wz-fkx;wob*edv72 ; tbl. ie*zkd6 t)ln2vgnetic field at the point exactly midway between the two wires

  Two long parallel wires placed side-rahgvgxmx w.8h/e2yiv6 o +2-by-side on a horizontal table carry identical current straight towarh-wg2r .h omie6/a+vvxg82yx d you. From your point of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires zzuzv)j /k ;i;carry equal currents. The magnitude of the force between the wires is F. The current in each wire is now douu)/v ;kzj;i zzbled. What is the magnitude of the new force between the two wires?

  A long straight wire carries current toward the east. A proton moves 5vz+qr,r up d,toward the east rzp,qru,5+v dalongside and just 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 current toward the ,98zek*eru )cwfmciv6 3jwv6 bottom of the page. What is the direction of the magnetic force it produces vee zmucic,f)r8*jkv9w366won an electron that is moving perpendicularly toward the wire, also in the plane of the page, from your right?

  Two long parallel wires are i i,51 s6mgihqplaced side-by-side on a horizontal table. If the wires carry cu1g mq5iih6,si rrent in the same direction,

  Two long parallel wires are placed side-w.8mqzd g ok:8nk,6tc gn( t+hby-side on a horizontal table. If the wires carry current in opposite dic gt,h: d6o(nnq8+8t .mgwzk krections,

  Consider two current-carrying circular loops.el05op6m 4 kx7 sgzas.jl +u-j Both are made from one strand of wire and both 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 largera6 7ojzpl 0m.lxu-+gj45ess k loop is

  Consider two current-carrying ci f8fl87wa a*qf u3y/ r*sfd5fcrcular loops. Both are made from one strand of wire and both carry the same current, but one has twice the radiuscf*uqa3l *awsf8r5y8 f dff7/ 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 anglpiigut-7g;ap 8jo50 we between the loop's magnetic moment and the magnetic field w5 ;pig0t-p oj8igua7vector is

  When placed askew in a magnetic fielxw rvm2kxjdi,osr 5 c s3o a4xp041,z0d, a current carrying loop that is free to rotate in any direction will experience a torque until its magnet1 wsaj s4, xzm50xx3vk4oprd 0rc ,o2iic moment vector

  What fundamental fact underlies the operation of essev ut,kl kd;h0)l.vi+am hdi3ia,w.d/ntially all electric motors?0ililvi.u t,ka. h,/va; 3hdm+)k wdd

  A circular wire loop lies in a horizontal plane on a table r3if.1,j nc3js cb6u/d 2v lyland 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 bl/syjc 36lv d2 r31.fj,nc iuof 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 i)gb 9(xw;la ;jjw f6zdr*2vhks 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 velocity of the particle. Derive an expression for the mass of the particle in terms of B,hw 2;wl) kdzb(av r jfg6;9x*j q, V, and R.

  A velocity selector consists ofm6 n0c;-+qpt .j-jtr qwpg riht5h+y3 a 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 rqp jwimjgt0-qc-n3+t+yp .t h;56hr direction should the electric field point?

  A 2.0-m wire carrying a current of 0.60 A is orientgte7os(*1te, brb p2hed parallel to a uniform magnett7 ,(p* e2g rhet1osbbic field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a dit2wr +,szhb 8irection 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 metersu(aupq sd9j0w d86-4 fol0 dr on a straight wire carrying 5.0 A when it is placed in a magnetic field of 0.020 T? The wire makes an angle of dua(l8o0q09f ujdsdp -rs6w 4$27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long has a mass of 0.050 kg an6 mx oc-m;/p-ir x8mwrbo:eq 7d is in a magnetic field of 0.10 T. What minimum current in the ro --;roxp i8xwm:rbm 6emoq c/7d is needed in order for the magnetic force to cancel the weight of the rod?

  A stationary proton is ikitq )7k6 vvyfa.t3lbok50 d.n a uniform magnetic field of 0.20 T. What is the magnitude of the magnetic forkiy53.f 0d6 qtkt .7valov kb)ce 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 o3 (4pv5nxhrc 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 sei8 g, cass/h-peed 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 speejxxk*l 11d smmu v+c ,6haow(:d $4.0 \times 10^5 \; m/s$ 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 sp 8)dkl kx3 ,ihvm*vhh/eed 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 withlwq )x2qb (z/p a 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 im w9zu y0xpb0n2 8ho72wvuv,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. Wh)ub40f4unhi/ ze2n pg* fp0p uat is the magnitude of the magnetic field at a distani 4/nuhz0ne*b fgup4) fpup02ce of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magnetic field at thef1gkhe+0v2 iiw:a pnbbmk /0/ ground, 10 m aiwmg0b/ak kn0fi 1hpvb/2: + eway?

  How much current mustgvb9p 4 smi:rz0g6vzh (4nxwx5yw8- k flow for $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance froe,+;v2p pvxm* nqtwq9m a long straight wire carrying a current of 5.0 A is the magnitude of m w+qntpqpv,*2 e9xv; 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 opposite directions. They ah8t5+p d,ef v3 ecw1ara1cvl 9re separated by 40 cm. What is t8 v9cah1+t fedev3p c,a1w5rlhe 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 cu.4u/ku u3 f4am hyls-frrents of 20 A and 5.0 A in opposite directions. The wires are s m3 a/uyu.-f44suhflkeparated by 0.20 m. What is the magnetic field midway between the two wires?

  Two long parallel wires carry current 8 d-2)m vq-7ph unpdu9ctmnztb-9x(us 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 the two wir p(7d8hqu2pn z9--m9tvxcuun m- b )tdes the same?

  Four long parallel wires each carry 2.0 A in the 1 dxlgm j95c4fsame direction. They are parallel to the z-axis, and they pass through the corners of a square of side 4.49fm1gd jl5x c0 cm positioned in the x-y plane. What magnetic field does one of the wires experience due to the other wires?

  Two long parallel wiresj7*my;vgw 0x0ds4 *ftsxhh: a carry currents of 5.0 A and 8.0 A in the opposite direction. The wires are separated b;ss4hhxmyx7tja:0 **g vdw0fy 0.30 m. Find the magnetic force per unit length between the two wires.

  What is the magnetic field at thei/:zrhw ,bcpq4uw 87ryk *u6h center of a circular loop of wire of radius 4.0 cm whpk6r wr:u7h4 cuzb/i 8wqy, h*en a current of 2.0 A flows in the wire?

  A solenoid 20 cm long is wonv*h)cmidj8b5 qxahwzjx) t(71 o 3 ,yund with 5000 turns of wire. What magnetic field is pro7) m5i*, jxvbw (8n) tj3hax1hoz dqycduced at the center of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10fcy*4b l;p(lq i kg.t1 m long and carries a current of 4.0 A. What strength of magnetic field will itfi1*b4y. c;gkt ll (pq have at its center?

  How much current must pass through a 400 turn coil 4.0 cm long to genera rt9+i;g0xe8vf j9/fz h549af b lmkopte a 1.0-T magnetgzv;94 kf+ 8/mobrf ai5e9jtphl 9 xf0ic field at the center?

  How many turns should a 10-cm loo32o vzvpv f75ng 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 cu8q na6yo 8i d(.tft8lmt2 6vkarries 6.0 A if its dimensions are 4.0 cm x 8.0 cm?vy6ntt k.qi8f6 8(ta8l2 u dmo

  A circular loop of wire of r2 p;k,ib nu mr9c7n2svadius 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 magnetic 2buk;2spmv9 cn 7r,infield?

  A circular loop of wire of cx9ya :*;s8fx wp jue58rzev 5eross-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 oju8r6 j -9,fcq mn)wmwf 2.0 A is in a magnetic field of 3.5 T. The u9cnmwfm 8j6)r wq-,jloop 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 is 9r 6fpk8p7fdg 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 87p fpr9f6gdk is parallel to the magnetic field?

  A circular loop of wire ob2kdbbdz):4hj (5 hh8n2 u xkvf 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 t hb4k j:zdh nx5bh8du( 2b2kv)he loop is parallel to the magnetic field?

  A circular wire looprom8(owxl sn 3prx 4ui;*b.e7 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 spectrometer, a single-charged particle (charge e) has a speed of 7;,6)rjdok;q qv2ma dams s*ewtp59b $1.0 \times 10^6 \; m/s$ 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 velocityltxyr h)(il;w o4 kh7- $6.9 \times 10^6 \; m/s$ 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 and then mopfx/rm xg-u1 np uk(i*sr9c y1 g.2.udves into a magnetic field of 0.040 T. What is the radius of the proku9gprf1(mp2usiu xg.. drxny1 */ c- ton's resulting orbit?

  A proton is accelerated from rest through 500 V. It enters a magnetic fieldy2dcdvt+ .)5jo--yxyr: os iryz08j h of 0.30 T oriented perpendiculy)ovrs:-yrjy2hy0 z8dd.ix- ctoj +5ar to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potential ;-j.z r )q.lh4j2ymdehf nm0rz4)jvv difference of 10 kV before enterinh2.) nd;qj)r0vmfmjl rjzz -y . hev44g 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?