If the north poles of two bar magnetsnj65 4vew;wk9 fh;zju jxh; -nv 87bzx are brought close to each other, the magnets wnx6;w7hw ;nk ve 9-jjvf5 u8;hj4zbxz ill

  If the south pole of one basyk7o5 uo:lzouwz9l v d /:jsr;7;p1kr magnet is brought near the north pole of a second bar magnet, the two s9/wp;;u k:ud1vz57r7 zoyo l:jsolk magnets will

  If a bar magnet is divii:vz-glnuj5))mi g ,e ded into two equal pieces,

  The Earth's geographic North Pole is magne -p/fem 3thxra3z)qx.zz4c:htically a

  The south pole of a magnep9xc50vjux m oa5.d8ut points toward the Earth's

  An electric current xy)ep5z (*w6pvn mqj43u u8e oproduces

  Which of the following is corre wzd/+4k.en0qm yh )e9nc+vya ct?

  A vertical wire carries a current straight down. To the east of thicy n 6z 7g((bo9)eremps wire, the magnetic fie) 6mnyge cbpeo 7z(r9(ld points

  A horizontal wire carries a current straj :e-ax2*(ei betae6xight toward you. From your point of view,exexa-t 6e* ab(:ej2i the magnetic field caused by this current

  A current carrying loop of wire lies flat on a tagheqwl*,m m,2 ble top. When viewed from above, the current moves aro*,lq gmh, mw2eund the loop in a counterclockwise sense. What is the direction of the magnetic field caused by this current, outside the loop? The magnetic field

  A current carrying circular loop of wire lies flat o6) ;s(ar2wys0vp e ix((kck-d)vvq ejn a table top. When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic -e 2p)vvdvkjw(x;(6s0r e(scy) ikqa field caused by this current, inside the loop? The magnetic field

  The SI unit of magnek18vk +k ta ige3jx*w5tic field is the

  1 T is equivalent to(/rhd.ay pbw /

  The direction of the force on./rkkrqz* -kn a current-carrying wire in a magnetic field is describk*-/ rqzn kk.red by which of the following?

  The force on a current-carrying wire in a magnetic field is the stss)fx ; v8nhdqzl1*zo( 7daz8rongest when

  The force on a current-carrying wire in a magnetic field isj1ffwibi- 4wy h76694budx vwh n) ,sb equal to zero when

  A vertical wire carries a current straight up in a region where ax7 ++r2jx nwbthe magnetic field vector pointsb2w+ 7nx +jrax due north. What is the direction of the resulting force on this current?

  A charged particle moves and experiences b8x-pru p,i0d+bcbrabw ( 1d8no magnetic force. From this we can conclude (xbw 8d08ra1 p ibbpubcd r-,+that

  A charged particle moves,(4wcnk 2onznsfa;+u with a constant speed through a region where a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting on this pn ,kca(nfns+4zwo ;u2 article will be maximum when the particle moves

  A charged particle moves across a constant magnetic field. The magnetic forc1vvj s,,:qp djibg18g9siu+ ge ou1pgj s18sb9+jg ,qd,vig:iv n this particle

  A charged particle is injectjftm z 3u3usx+*t-p9x ed into a uniform magnetic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring the particle's wes93-mjzx3tutfx u p*+ ight, the particle will

  A charged particle is observed traveli l 9tkv8;i3 6qpwo8b:oph- skdng in a circular path in a uniform magnetic field. If the particle had been traveling twice as fast, the radius v- k83iso;oh8lq:wp 96 b dtpkof the circular path would be

  A particle carrying a charge of +e travels in a circular path ikjft2 4.zz lo(r+ qcv;n a uniform magnetic field. If instead the particle carrie cklzr2z(jv; t4 +fqo.d a charge of +2e, the radius of the circular path would have been

  At a particular instant, an electron moves ctd. hz30: pnxrm.f. geastward at speed V in a uniform magnetic field that is directed straight downward. The magnetic force that n 3.g0rfhc zmxd.t.p:acts on it is

  An electron has an initial velocity t hfug0otx(.t :o the south but is observed to curve upward as the result of a magnetic field. The direction of to:g.xu 0th f(the magnetic field is

  An electron moving along the +x axis enters a region where there i,ssq2fc+ z, cif 5ke r 67mbmz1cc9xa,s a uniform magnetic field in the +6ik9 2 q,1abcm,c7csffc ,m zrsx+ez5y direction. 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 wirzd/ dxyfn.bt() b2(pye is

  At double the distance fbw cv/wzt5) qkzhho2 ,6. qr3b o,tm*jrom a long current-carrying wire, the strength of the magnetic field t kt3. jb,zc r /ohbq)6mvo2 w*wz,h5qproduced by that wire decreases to

  Two long parallel wires placed si8i 4/-k ch .zs8i(;y5xbljrvx z opsk(de-by-side on a horizontal table carry identical size currents in opposite directions.c/vizp58h((ri.l;k-8b xso4zsj k xy 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 magnetic field at the point exactly midway between the two wires

  Two long parallel wirzeohvw,ilas75g a 9yt ,1 7-nofuy,9ees placed side-by-side on a horizontal table carry identical current straight toward yywvae gnou s ,i,7otyah9fe5lz7,-91 ou. From your point of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal ct2b;2o+s +wgoniz 8 bmurrents. The magnitude of the force between the wires is F. The current in each wire is now doubled. What is the magnitude of the new force betwe2;i bw+n2 +obms8zogt en the two wires?

  A long straight wire carries current toward the east.4begj5id g*ols ;i;q7rl* 7xo A proton moves toward the east alongside and just south of the wire. What is the d x;go7i7**5 ;ld qegrslj4bioirection of the force on the proton?

  A wire lying in the plane of the page carries a curre *6jzmihfc 80*iamfl fj;z:9ynt toward the bottom of the page. What is the direction of the magnetic force it produces on an electron that is moving perpendicularly toward the wire, alsj*mfiz:y mfzc*h;l 6jfai 098o in the plane of the page, from your right?

  Two long parallel wires are placed side-by-side on a horiz m *ddbswpkk9 (*+8urtq mz0,5o tx,qsontal table. If the wires carry current in the(kqs9*wk bmom0*tsxp, t,58rd duz+q same direction,

  Two long parallel wires are placed side-by-side on a5bvq4 genvt.ehkq5 mk8s6; -ro-n u.q horizontal table. If the wires c545bqeg vqm8..n6n kk q;v -hteuors-arry current in opposite directions,

  Consider two current-carrying circular loops. Both are made from ondfef02h 5 (iq5fq(arle strand of wire and both carry the same c q 0(fqif 2f5drah5el(urrent, 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 are ms(cdxk7:9zf z4k +krv.v +oy4gk;kk zade 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 magnetic moment of the largcz 4zg: xk ++kk7vfyovs;kzr 4kdk9(.er loop is

  The maximum torque on a current carrying loop occurs when the angle between thg) o1xdx5 w2xoe loop's magnetic moment)go 51dox x2xw and the magnetic field vector is

  When placed askew in a magnetic field, a current carrying loop that is frsd2ir*2z txbrz.yg2q y30 , peee to rotate in any direction will experience a torque unxry ,ysd2*2.2izq g t0ez3prbtil its magnetic moment vector

  What fundamental fact underlies the operation of essential29.xabs pv2 mrly all electric motors?92 a.xr2spvm b

  A circular wire loop lies in a horizontal plane on a table and o8qk+z,s1sjki7gx)f b z(no; 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 of the table because +biq,) n1fss k(z8kx;o go7jz of the torque caused by the currents interaction with the magnetic field?

  In a mass spectrometer a particle of massbnhd oi51 l7m- 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 field is uniform and oriented perpendicular to the velocity of the particle. Derive an expression for the mass of the pamnlb7 hd o1-5irticle in terms of B, q, V, and R.

  A velocity selector consists of a charged particle owq/4ip11 2 tz3f 9zjx5iullm 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 followif9lzw32l5imp 1 tx4 zjuoiq 1/ng, 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 direction should the electric field point?

  A 2.0-m wire carrying a current of 0.60 A is oriented parallel to a uniform magl13xelc8z cdocwc-: eh-b02 zhp, wj2netic field p20-,w 1ezw lc-dc2x be3c cl:8hjo hzof
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A imaj 3 g+ccs9u)-ktqe 1uouq) +n 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 a straight wire carrying 5.0 A wheyb-k p qmi:0;heox:)vq g)l3 q.f,zmtn it is placed in a magnetic field of 0.020 T? The w)z)h 3q eyg,bt;xmvqfmop.k- qi:0 l:ire makes an angle of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long has a mass ofzt;n6)v- vpoc (-ip hs8q6 owfjbif)gxv8l */ 0.050 kg and is in a magnetic field of 0.10 T. Whwsxi6 ;(vno f6ijf) ob-- t*hzvvcp8)q8 g/pl at minimum current in the rod is needed in order for the magnetic force to cancel the weight of the rod?

  A stationary proton is in a uniform magwe)j +nd 7k9sy;y*gezt:1 ogznetic field of 0.20 T. What is the magnitude 7;dzzgnyty9 +*ke:jg 1) e swoof 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 with aid+ 0aj; 84x8c6ydgz(kmy fha 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 spepwyv- 8m gru57ed 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 np*:mo nly8i* jexbb o8 gu-2rs;gn2 5,r4tzfmorth 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 wi53e kadw, or*ac/9co kth 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 magnetic force of the electron.

  An electron moves with a s dq 6tzb.e1xf/peed 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 ofd l h-5s3,)nx 30k,uizvl-m6tifdvsv $3.0 \times 10^6 \; m/s$ 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 magn-x/ yrn v2psf7itude of the magnetic field at a distance of 0.15 m from the wirep / n7fx-yv2sr?

  A high power line carrying 1000 A generates what magnetic field ,:7o*i kay- d d/mgr/ zwkgpwhd98w n1at the ground, 10 w/:,wn *k/9ygd7dim8rh k z1dpgawo-m away?

  How much current must flow fogr6. v9; timyvr4 cdm(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 a current of 5.0 A is the bv0e 5:e06d wue.d5o:mlvtfk mag:6. t0mb5fek e:odu5w vd0ve lnitude 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 opposite directions. They areq: sbvs p9lui-r pc*,5,mi,ne separated by 40 cm. What is the magnetic field in the plane of the wires at a point thab lp: rveqcusm,p5isi9 ,* ,n-t is 20 cm from one wire and 60 cm from the other?

  Two long parallel wiresjis3c*vn6g(*ilgu/yd ,d1b5m gd 8la carry currents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the magnetic field midway between 8 i(sin*3l,g/yjlvd6gbd1amu *g 5c dthe two wires?

  Two long parallel wires carry currents of 20 A anq t/ xe2z 4tbww1n gwwj t2x8*,ak*0a; )dwrfqd 5.0 A in opposite directions. The wires aretw;w2 4nx 2wqwe f,zxgt8)aqj w01ar*tbd */k separated by 0.20 m. At what point between the two wires are the contributions from the two wires the same?

  Four long parallel wires each carry 2.03 k0ntyq5-ya uwf 41owulo7lcs, a1g . 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 the x-y plane. What magn0f kq.4cy17ol on1gywa wu3- us5,lt aetic field does one of the wires experience due to the other wires?

  Two long parallel wires carry currents of 5.0 m)hailrp5p db/0jx2 4 A and 8.0 A in the opposite direction. The wires are separated by 0.30 m. Find the magnetic foib ajp 42hrxdp)05 l/mrce per unit length between the two wires.

  What is the magnetic field at the center of a circular loop of wire of radius 0wn fkzvli cgj9qc wayeu16 e( +0:l384.0 cm when a current of 2.0 A flo(kflcjlqy1cww9 n0+e z80 ge3i : av6uws in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. (b*r2 pbuei- gnxfm6l50max* What magnetic field is produced at the center of the solenoid when x*u m6i5xepfm-b (*0b rgln2aa current of 10 A flows?

  A solenoid with 500 turns is 0.10 m l)bs 7ui*yh4 h. oap:*w) xhp7jfswt x.ong and carries a current of 4.0 A. What strength of magnetic field wpjxt a) puh*y.).fox *7h7is4:hb ws will it have at its center?

  How much current must pass through a 400 turn coil 4.0 cm long to generate a cdypxxq;de9:fo a39 8 1.0-T magnetic field at the ced8a:y c 9oxq;9x3pdfe nter?

  How many turns should a 10-cm long solenoid have if it is to g *7b e,is3cwglenerate a $1.5 \times 10^{-3} \; T$ magnetic field on 1.0 A of current?

  What is the magnetic moment of rjg1rn eaf9 2s0a3fcp4+ w l,gzec 6d4a rectangular loop of 120 turns that carries 6.0 A if its dimensions are 4. c2g0sf6 +z4fnacaljpw4ree g3,rd1 90 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in ah 596xp9-n0g(a ybnwztbha 6xu a j.8a 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 magnhx9yabg(6a5z6 9-tb 0haa nn.w jxp 8uetic field?

  A circular loop of wire of cross-sectional arec0aqmqte7*( s sbc6f -a $0.12 \; m^{2}$ 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 +gvb)ih,xlf1d53r r bof 3.5 T. The loop has an area o )5r b3ilfxbvrgdh1, +f $0.12 \; m^{2}$ 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 wirr x6w;7x r,xqi5ogpo e.(wxl4 e of 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 lo.w x,xp4w7l oxqore g(5ri6;x op is parallel to the magnetic field?

  A circular loop of wire of radius 0-r18mau p e,lj)6pmb0fawv e7vx 6y2o.50 m is in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 6avp6,) o 1uy87lb0eweajxrvf-p2mm A. What is the magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop of arqt,y5o hu.y4x ea $0.25 \; m^{2}$ 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 (chanca-/h80 fmw orge 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 w3o)w n8 7 jrsajjeir60ith 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 then moves 49j9u m gy9bfcinto a magnetic field of 0.040 T. What is the radijug4cym9 f 99bus of the proton's resulting orbit?

  A proton is accelerated from rest through 500 ) k i1kox+rka/77 xfu65kzeke V. It enters a magnetic field of 0.30 Te7kfk e7 k oxk6 z5)+ikx/a1ur oriented perpendicular to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potential differev( 3fj0r 5wnfance 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 required if the particles are to be undr wjf05f3a v(neflected?