If the north poles of two bar magnetjk 32kpdane qx6lsuy,(mp i*6u l))4 ls are brought close to each other, the magnets wilxu2l*u6 6lyjnli3e)a ppqsm d)kk( 4,l

  If the south pole of one bar 18ov,4 w6tfjx ydan9jmagnet is brought near the north pole of a second bar magnet,,d48 taj9fxwn j6ov1y the two magnets will

  If a bar magnet is divided into two equal pieces ,cnasx5rn5o -,

  The Earth's geographic North Poleh7t gd8l15qcn is magnetically a

  The south pole of a magnet points toward the Earth'q)m:zinjgek 74yvomy53 i,,js

  An electric current pr3txv i6knxio3 ;x1+uzoduces

  Which of the followin.* :fucugyq /( dhpnc onp:*/qg is correct?

  A vertical wire carries a current straight down. To the east of thijmg j):-nqju -s wire, the magnetic field pn )-qgju -:mjjoints

  A horizontal wire carries a current straight toward you. From your point onjut3pxo.n 5 0l6w xy3f view, the magnetic field causojp6 03.t 35xuxnnlwyed by this current

  A current carrying loop of wire lies flat on antq/-.v7/8mr 6rwgysudf w/z 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 bywmr7/qsg 6.ytu/8 n wr vd-f/z this current, outside the loop? The magnetic field

  A current carrying cir6tt:6jl,zrt snim0 z2cular 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 fieldt 2isnztzt06,lm6: j r caused by this current, inside the loop? The magnetic field

  The SI unit of magnetic field ib hmiei*4;8r. 4e8k*ayesogus the

  1 T is equivalent to)h/ymtq 1-ilkhvs4y-9yy(t fr.tl: n

  The direction of the force on a current-cake qx 4w3o;-7jogc :o pxe:q0vx27 xp8lnloo +rrying wire in a magnetic field is described by which of the followino: 37n 8p0le7j vpq ox2kow4;:eoxox +q-x gclg?

  The force on a currel 7rzioko89 +knt-carrying wire in a magnetic field is the strongest when

  The force on a current-carrying wire in a magnetic field is equaypxup8 l9.g.j l to zero when

  A vertical wire carries a current straight up in a region where the maj2bl+ly1,n p iqnm0 w0gnetic field vecto1l 0y qm0in bpn2l+j,wr points due north. What is the direction of the resulting force on this current?

  A charged particle moves and experiences no magnetic forcbknnww))/ o ii; z8be)e. From this we can conclude th)wbi n/)k);8n oeiwbzat

  A charged particle moves with a constant speed through a region whereghyw.t )j0c h, a uniform magnetic field is present. If the magnetiw .,gyt)j0hc hc field points straight upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constant mauvsr 3zp:w/ jzqa*i3 i, 2.4gfpp0kpmgnetic field. The magnetic force on tp,a2 fjqpim4. wszvupki3p/r:z0 3 *ghis particle

  A charged particle isd:gstk)1av is4lcl(3 3( mevo injected into a uniform magnetic field such that its velocity vector is pl(s m3vgc:td)ia3e solv(k1 4 erpendicular 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 magnjp xo(:o7hf 0jetic fi 7x(fho:jjop0 eld. If the particle had been traveling twice as fast, the radius of the circular path would be

  A particle carrying a charg lhdqwj.)pe2/(p4a ece of +e travels in a circular path in a uniform magnetic field. If ine4./ ad lehqc2 wpp(j)stead the particle carried a charge of +2e, the radius of the circular path would have been

  At a particular instant, an electron moves e dfdyzs(uo(iks -u) ,.astward at speed V in a uniform magnetic fsf ody .d,-u(zsu(k)iield that is directed straight downward. The magnetic force that acts on it is

  An electron has an initial velocity to the southh*cnmgj2vibl85 e*l; but is observed to curve upward as the result of a magnetic 25 ;elg*bim*jv8 hlc nfield. The direction of the magnetic field is

  An electron moving along the +x axis enters a region where there is l nz6q+5r8h4d9iwpc/ do-l mma uniform magnetic field in the +y direction. What is the direction of the magnetic force on thlz 4+h9lrow 8c/mmqdi5 n6d-pe electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced by a long straight currd*h nh-sp o- sjg/0xr 6g4xd jg85sa)rent-carrying wire is

  At double the distance from a long current-carrying wir*3 -+b0wd;lzf xlabd we, the strength of the magnetic field produced by that wire decrewx da*bd-3z; f+l wlb0ases to

  Two long parallel wires placed side-by-side on rb83.dgv1fvsuq cr+ )z mw9 8ca horizontal table carry identical size currents in opposite directions. The wire on your right carries current toward you, and the wi9sgdccvwu qzr)8v f.r1m 3+b8re 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-side onv8 fy7hm37p.ddox 4vxu8w: xw a horizontal table carry identical current straight toward you. From your point of view, the magnetic field at the p.77 vdp8:x h4 d8vuxfwywx3mooint exactly between the two wires

  Two long parallel wires caz/i 3e.pt o20tugvdb n95y*tvh)c3rjrry equal currents. The magnitude of the force between the wires is F. The current in9jzih3t*vg2v u/n0 rp35yto)b ce t.d each wire is now doubled. What is the magnitude of the new force between the two wires?

  A long straight wire car79ays3xt wr7 3vwo;m ories current toward the east. A proton moves toward the east al9y7vsa 3m7;t ox wro3wongside 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 currenqvd0m3) cs k hm1 bedeu9-*xm/t toward the bottom of the page. What is tmxedukqhs/ 3 v de)10m-bc9m*he 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 your right?

  Two long parallel wires are placed sio fr;/fwbus0 -*vm* rmrri 8n2de-by-side on a horizontal table. If the wires carry current inm- wimf*8 r/*s0rorfb r; 2nuv the same direction,

  Two long parallel wires are placed side-by-sidewo o 0unwvwcn qa0+7 f75tg/n6 on a horizontal table. If the wires carry current in tgnnwv/50o 7 u 6n7 a+q0ocwfwopposite directions,

  Consider two current-carrying circular loops. dz o a 41fmjzr.:18q ellq.x2hBoth 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 largerqr lj.fh 1:4e1 q8zo2zlamd.x loop is

  Consider two current-carrying circular loop1y/q2s 8p*k bw7bno fms. 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 moment of the smaller loop, the magqsmofby 2 8kwpn* 1b7/netic moment of the larger loop is

  The maximum torque on a current carrying loop occurs when the anglug4u 2r/vqai8l kq z0g;;b 5eje between the loop's magnetic momentu;u 8alg50vqegr;z/b ijq4 k2 and the magnetic field vector is

  When placed askew in a magnetic field, a current carrying loop that is free to r pedw;n 9zk c+6b-j7ijotate in any direction will experience a torque until its magnetic momentik7;+j-wcnbj6 pzed9 vector

  What fundamental fact underlies the operation of essentially all elev v asw)wb6vvg0zu/49 ctric motorsz vbva9/w )u64s0gwv v?

  A circular wire loop lies in a horizontal plane on a bvlalcp2+;+d- ch kr) table 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 cv+cpa+;)l db-hk2 l rthe 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 o .k99ub7 dnvw1chkw(qh :gb a9f mass m and charge q is 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 f9b9nd.u g:9khwbw1qc7ha(k v ield 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 passig w+kp2x1 cr4wzx.ms fj*cs/,ng 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, disrega xw c1jm/x pwfs+ .z4ksg2rc*,rd 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 orientb bmvv ./gb52a oh8 yy(+fiw8hy)6gpied parallel to a uniform magnetic field w(ypf5ihb .v8 gyai y /2hb v+b)g6mo8of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a direction ) xj1kzdk8 c35oqwbg d.*8u(a bg:koiof $30^{\circ}$ 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 stbeofj9 z9s2 )xraight wire carrying 5.0 A when it is placed in a magneti92e9z xbsof)jc 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 lon b3vinj7aho 7g3cs:d n smo956g 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 for the magnetic force to can oojc ig373:79 nv5sbdhsmn6acel the weight of the rod?

  A stationary proton is in a uniform magnett5il+ 9bd/0jemctco7 hl f( q3ic field of 0.20 T. What is the magnitude of lo+q (dtblcfe/m9tc h0 37ji5the 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 with a b8kkwt hp0 ht5 1t i1,- eru9dbhf-e-vspeed 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 spee8+ / s-dxnwpj7kte0ol d 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 duekl7zvp l2chu0nl9 -3l 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 spee uhn)t1jd(yr ymf10spx/f 6j8d 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 speed of 7 t v2.-/dx +qw q/gyssczbpvgd8.(nz $8.0 \times 10^6 \; m/s$ 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 oeh:u9u. ,k+0 mbmsv cnf $3.0 \times 10^6 \; m/s$ 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 magnituy;4sy0jy;x*gi + ix (fus )wyede of the magnetic field at a distance of 0.15 m from the gexis;4yi;u+s(ywjyf)* y0 x wire?

  A high power line carrying 1000 A generates what m 633mv3qbw xrhagnetic field at the ground, 10 m a63vr m33 xwhqbway?

  How much current must flow for ,xg4 a3u bo:m3tva/ah$1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long straight wire carrying a current of fyh*f/ x c3h/m5.0 A is the magnitude of *xyf h//mc hf3the 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 curr 4sl29xmbo saysk06ab/8) gjc w*b(mqyp w k2*ents of 10 A in opposite directions. They are separated by 40 cm. What is the magnetic field in the plane of the wires at a point 0wk 4pabbw/8l9yskocg*symsjqx*2( )mb2a6 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 opposite m--tb7ejiz6q) gtdzr0 4 fn;vdirections. The wires are separated by 0.20 m. What is the magnetic field midway bzbvm q4t7z;ej -t)gd6i- nr 0fetween the two wires?

  Two long parallel wires carry currentsjab6(jl ,47 (rk qka zlne-p*r of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. At what point between ther4*ra(k ,qlepnzl7 j6 b(aj -k two wires are the contributions from the two wires the same?

  Four long parallel w5-jux0on 0dfm 1l-pavires 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 positjdm- 01 5lnouap 0v-xfioned in the x-y plane. What magnetic field does one of the wires experience due to the other wires?

  Two long parallel wires carry cdz1edt 21zymgyjta:cev:6l :8o q(v ,q v60uu urrents of 5.0 A and 8.0 A in the opposite direction. The wires are qt1:te1ay6(,z 8jue gvz vyd:q:mld vuo0 6c2separated by 0.30 m. Find the magnetic force per unit length between the two wires.

  What is the magnetic field at 2yj+)yxut tfx 9z0 n8othe center of a circular loop of wire of radius 4.0 cm when a current of 2.0n2z u +8ft0y9x)jy tox A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. What magnetic fielh2xutzwe+3d/p.:j ,pp1u k4ot g*f43jnai zp d is produced atp /e4hkuf nt43igz2ju+p pjz1, owx p* t.:3ad the center of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.1prz7onrb t94+ 0 m long and carries a current of 4.0 A. What strength of magnetic field will it have at its center?np+o9 4br7z tr

  How much current must pass through a 400 turn coil 4.0 cm long to generate f/59g oq7p(qe k 5x6paml bk7ma 1.0-T magnetic field at the m fb69k7pqk5/ 7apleg5 (mqx ocenter?

  How many turns should a 10-cm long s -qt(9rhq ep8 (ifpoe(olenoid 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 mot,mwmy g 9vj1:ment of a rectangular loop of 120 turns that carries 6.0 A if its dimensions are 4.0 c1 ymv9t:m wjg,m x 8.0 cm?

  A circular loop of wire of radius 0.,h,2t 5 r 4 asbu2wuei,6 59tejijmpgs50 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 jwbe9rs2 2im tth,5 ug 46,esau,5jpithe plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sectional area d ;,b5nw*uja7eoq 3h o$0.12 \; m^{2}$ 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 l-glb ob20aq )field of 3.5 T. The loog2lb-0bl qo )ap 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 pvx ar;xncj sp;55e.mw1n4a( is in a uniform magnetic field of 0.30 T. The x;5am s.4 ap1ren5xnpw vj(c;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 magais6 ooo(hs+0iay y9,netic field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the pla+a9i i6(y o,0aosyohsne of the loop is parallel to the magnetic field?

  A circular wire loop of 8kle5xe 7nm6g 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 edxx,n*9k c -2ruhqs*c5e zc*r ) 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 wit8jj a8t(bcp+pf j+w 0f/pnnr,tg4i 2k js;z0ph velocity $6.9 \times 10^6 \; m/s$ 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 thab zf6 t-z+h3ien moves into a magnetic field of 0.040 T. What is the radius of the proton's resulting orbit?zati fb-6zh +3

  A proton is accelerated from rest throu2 2-c/ urlmy(c4 gpimdgh 500 V. It enters a magnetic field of 0.30 T oriented pepci-/ cdlrym4( 22ugmrpendicular to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is a aitx.qf/pq7x /zn3tj,sy*ex f/p*h9 ccelerated through a potential difference of 10 kV before entering a velocity selector. If the B-field ofxqf/ha 7te n9/q*pfzt/yi3*j xp. x,s 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?