If the north poles of two brwavhz 6u-he 7f /57bmbj/c x:ar magnets are brought close to each other, the magnew6zc/u /fx:ahe5b7mj7v- bh rts will

  If the south pole of one bar magnet is broui/+f,k-f2*xa rlkkzg6 aq uk:ght near the north pole of a second bar m2k*z :x,k ia fk6-l qf/ugrk+aagnet, the two magnets will

  If a bar magnet is divided into two equal pr58pztv4-u0q;tk ky oieces,

  The Earth's geographic North Pole is magneticallyrrf 7q8stc467v7*zr :fubq go a

  The south pole of a magnet points toward theimk;/ (xfhr 6bdue9c4 Earth's

  An electric current zdrn:,0jwg jxwqcm57o.x 8g9 produces

  Which of the followinh .(+ocyl:f,4cfkv 1zfqa au-g is correct?

  A vertical wire carries a current,yn anh/l5l a: straight down. To the east of this wire, the magnetic field poy :hn aln5/,laints

  A horizontal wire carries a current straight toward you. From your point qjcz d2q g c,zx,v6wg yd;..v)1n *symof view, the magnetic field caused2*jqw)d..,c gy1y,sgv;xnzd v6zqmc by this current

  A current carrying loop of wire lies flat on rp:w bu0m16c na table top. When viewed from above, the current moves around the loop in a counterclockwise sense. What is the d1b r0m6c: uwnpirection of the magnetic field caused by this current, outside the loop? The magnetic field

  A current carrying circular loots-+f( w,qhm vp of wire lies flat on a table top. When viewed from above, the currents( f+tm wqh-v, 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 magnetic fie3zw( xuvpthx4 u; 8gk5ld is the

  1 T is equivalent torntz28ia guy je 3 ht,+ewz879

  The direction of the f;v8:oo3 fxtrku4pp1 u orce on a current-carrying wire in a magnetic field is described by which ofuov8txou 4 ;r3pfk1: p the following?

  The force on a current-carrying wire in a magnetic field is the stronge006 f md)-):il3lf iztyodmxcst when

  The force on a current-carrying wire in a magnlso0me j9:kyg- ,gedtp21 ex/etic field is equal to zero when

  A vertical wire carries a current 4l)jy wzy90j1mgxfr +mco5 g( straight up in a region where the magnetic field vector points due north. What is the direction of the resulting force on thi jmj)yo(f1r m5g+wc gzy49x0ls current?

  A charged particle moves and experiences no magnetic force. From this we can co1 v5:mx)fb/z phli( jancludefl)bjh v (5zx/m:api 1 that

  A charged particle moves with a const3 w+m90uwrafxyh.m n/ ant speed through a region where a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting on tu wm3hxy/+ .nam wf9r0his particle will be maximum when the particle moves

  A charged particle moves across a constant magnetic xy2j 50h+u7vvaa)m-6ri.nhc s .qmbyfield. The magnetic force on this partina)av. .c yq0i+u-ry 5s6mjv2hmb7 hxcle

  A charged particle is injected into aki6 )+ gphdz/fgn5h rw/gyh k js3:l*8 uniform magnetic field such that its velocity veirhn /: 5hphs)*6kgdl+g jzf y/g8kw3ctor is perpendicular to the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in a circular path in a uniform magne8mfi z;.xl h)d zdr91ntic field. If the particle had been traveling twice as fast, the radius of the circulan izrh)d9.dlmz 8f1x ;r path would be

  A particle carrying a cha7 ex z49gvcbmzlr1xxw/ 1f+ (jrge of +e travels in a circular path in a uniform magnetic field. If instead the particle ca lf j zb9 +(c4/7erzvxw1gx1mxrried a charge of +2e, the radius of the circular path would have been

  At a particular instant, an electron moves eastward at speed Vl d(p.w/fb: zf in a uniform magnetic fieldfzdbf ./(wpl: that is directed straight downward. The magnetic force that acts on it is

  An electron has an initial :bf: d br0p;b ;pcie:2 w wtv/hm8a4edvelocity to the south but is observed to curve upward as the ra;0rd:;m et4p wi/che8bdv :b2fpb:w esult of a magnetic field. The direction of the magnetic field is

  An electron moving along thhmgmy+lh2r 33m lp2w3r- s vc4e +x 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, a4ml3233r- gh2 slmrpyv +m hwcnd +z out of the page.)

  The magnetic field produced by a long straigh7ifu1i01p,i lh x90l rhxvl fwek;dpyrl:;/8t current-carrying wire is

  At double the distance from a lons r*dq (b,g2y nn8ksl3q//qdj g current-carrying wire, the strength of the magnetidd l8/sqb(s g qn3n2ky r/jq,*c field produced by that wire decreases to

  Two long parallel wires placed side-by-side on a horizontal table carry idenwg 2iiar;7r -otical size currents in opposite directions. The wire on your right carries current toward you, and the wire on your left carries;owiir g7-a2 r 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 ar: m(k6 rum qhewn2gh /hebk9b-x92h* horizontal table carry identical current straight toward bhku 9 mxh*2qg rh9kwemn hreb-2(6:/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 magnitude of the force betwekj.ummxpx u6- w3;: yyen the wires is F. The current in each wire is now doubled. What is the magnit m 36kumxyx-:w.uy;jpude of the new force between the two wires?

  A long straight wire carries currentfs;)xze95 uj*vj lc8olv e +2s toward the east. A proton moves toward the east alongside and just south of the wire. What is the direjsv;s j82eo lf5*xu+ vel9cz )ction of the force on the proton?

  A wire lying in the plane of the page carries a current toward the bottom 7xj rgrw39ow.of the page. What is the direction of the magnetic force itj rrgx9wow7. 3 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 uas02it u:m6d side-by-side on a horizontal table. If the wires carry u:m2a6iud 0st current in the same direction,

  Two long parallel wires are placed side-by-side on a horizontal table. I.qx bup b61gs(1x-(uu bvrus/f the wires carry current in opposite d-s(qbug us.ux1 (61vbr/ puxbirections,

  Consider two current-carrying circular l 9w texcp-/z*kxr+c 7woops. Both are made from one strand of wire and both carry the same current, but one has twice the radius of the other. Comparwk 7/ p-c+wrtxzc9e*x ed 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 circulm pz;+2qz0 plear loops. Both are made from one strand of wire and both carry the same current, but one has twice the radius of the other. C 0 pzl+;zpem2qompared to the magnetic moment of the smaller loop, the magnetic moment of the larger loop is

  The maximum torque on a current carryingm /x*aqo39v gc loop occurs when the angle between the loop's magnetic moment and the magnetic o3g 9x*a qvcm/field vector is

  When placed askew in a mag/vcjg. w ;fq6k- fjmy:netic field, a current carrying loop that is free to rotate in any dirc:j gjk6.q yfw-;m/f vection will experience a torque until its magnetic moment vector

  What fundamental fact underlies the operatio;b znp rb,x;.h0sm0v kn of essentially all electric motors 0sxm0n. rhbpv;,; zbk?

  A circular wire loop lies in a horizontal plane on a table/7u4crr.yapsi0h1 pf n7rph; 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. Which side of the coil tends to lift off ofsy7i p/up .0;h 1nrhcr7ra 4pf 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 accelerated throff*.mg3 *mqkk ugh a potential difference V and allowed to enter a magnetic field B, where it is deflected in a se3*kkq f.mf* gmmi-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 particle pa+mohkyf.x8 j zih8 (k2ssing 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, 8 zxk(fyj+moi82hk .hthe 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 uniform magnuo )ss9w: ;ujt di .mq4mc8lk,ets8 oum4;: c 9j,qs.dti) wlukmic field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a curredj3*zx z o-2e4oc4g/f)e qayunt of 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 )q ( -;ri;glrwlfbr9t a straight wire carrying 5.0 A when it is placed in a magblr rqlf-;);iw9( t rgnetic 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 l+ 0x *dqgqh*kh)mjtg (ong has a 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 f+hhq() qgkj md**g x0tor the magnetic force to cancel the weight of the rod?

  A stationary proton is in a uniform magnetic field of 0.20 T. Whljl:i ; rn.5ewat is the magnitude of the magnetic force on t5lwnrej.i;l: he 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 as./j u yj+lpi*c+6jw q 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 fgl 2a0iix9s):q nbvb4jz)-w 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 dc jegd5;zrk:/ue 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 sp :uqufr;r ) j)fl-+tzheed 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 spe r2 *yh0(ys bit:,quoqed 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-422vd,hj i t;vafaa d $3.0 \times 10^6 \; m/s$ 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 o,od 0 vd zdo;,sy,jcz-f 25 A. What is the magnitude of the magnetic fied0sd,ov ,o-,z ;c jzdyld at a distance of 0.15 m from the wire?

  A high power line carrying 100:c5sp4s yah-l +kd pn70 A generates what magnetic field at the ground, 10 m+7c -sn45hsyak lppd : away?

  How much current must flow fou ynfdq2) zo(;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 straight wire carrying ( mly-fe1 sir0or)wy )b )ks2da current of 5.0 A is the magnitude of the magnetic field due to the wire equal to the strength of te2)ysks 0(d-ml )r1rw )f boiyhe Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents oviyjl5eww /qy x-.m)(vf, eq0e w,h)uf 10 A in opposite directions. They are separated by 40 hx( lq/vj wf,e5ym0 -)i,eqwu wy.e v)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 currents of 20 A and 5.0 A in opanr2l 6q8wro: posite directions. The wires are separated by 0.20 m. What is the magnetic fielorn8lw a q2:r6d midway between the two wires?

  Two long parallel wires carry currents of 20 A an6 vfym85ydo1id 5.0 A in opposite directions. The wires are separated by 0.20 m. At what point between the two wires are the contrib vy1f 5my8i6doutions from the two wires the same?

  Four long parallel wires each carry 2.0 A in the same dl )jj ur3zthjiu064rb,+ra 7p p/e1evirection. They are parallel to the z-axis, and they pass through the corners of a square of side 4.0 cm positioned in the x-y plane. What magnetic field does one of the wires experta4ri0rr,lv ub pze) 1jp j6/3heju +7ience due to the other wires?

  Two long parallel wires ca t27po: b0lgigrry currents of 5.0 A and 8.0 A in the opposite direction. The wires are separated by 0.30 m. Find th l2b0p tigo7:ge magnetic force per unit length between the two wires.

  What is the magnetic field at the center of a circular loop of wire of-z ;:mdw dd:x(b5 suib radius 4.0 cdbzdd-:(xi u m 5:bs;wm when a current of 2.0 A flows in the wire?

  A solenoid 20 cm long is wour gpmlgw,*l1( nd with 5000 turns of wire. What magnetic field is produced at the center of the solenoid when a current of 1,plml*g wr1g( 0 A flows?

  A solenoid with 500 turns is 0.10 m long and carries a cwfd/k78 coh6wurrent of 4.0 A. What strength of magneowwfh d786kc /tic field will it have at its center?

  How much current must pass through a 400 turn coil 4.0 cm long to gene1/cr;rb8 gcn8u afp 9crate a 1.0-T magneticpbr89 f/a1g8cc n;r uc field at the center?

  How many turns should a 10-cm long su7ga vl7e/(p)ycm bq 6olenoid 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 lovgm 7ciaoa. *lb j06,mop of 120 turns that carries 6.0 A if its dimensions al. 0jb6v,*a moi7m cgare 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 072gjnt2wjl /w.50 m is in a uniform magnetic field of 0.30 T. The cuw 7g2 jjtn2w/lrrent in the loop is 2.0 A. What is the magnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sectional arv bvmz 3goh12(ea $0.12 \; m^{2}$ 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. hzce*;)0y svh The loop has hsc)ye0vz;* h 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 magnetic field of 0.3t 8lqa- pv1pq,ps.)lp 0 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane o,a1lsq)qv ptpl -p.8pf the loop is parallel to the magnetic field?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic fih xl5 nc)tttj/c *q7l3eld 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 magnetic fij l5tc)q7xh3 *t/ntcleld?

  A circular wire loopy8y zx -ni iecm* flqlgw;s9:s+/+h8g 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) 8ktib01)k5pm.b6j rz cbsv2j 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 vely ancj/ttb1q n 9(( u.tan:rr)ocity $6.9 \times 10^6 \; m/s$ 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 movc1zm,4 d5yygdvmw6 -j es into a magnetic field of 0.040 T. What is the radius of the proton'sdyzj-v wg4m c,m1d6y 5 resulting orbit?

  A proton is accelerated from rest througbokicje 0h8+4)k)2 k+hmsub a h 500 V. It enters a magnetic field of 0.30 T ora)j+ smu)ek20h bb+ ko8i kch4iented perpendicular to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is acceleos6aplg+;ku:c)quurb1 +3 w irated through a potential difference of 10 kV before entering a vu p1craou)w+36builk : sqg;+ elocity 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?