If the north poles ofh, 70 n tan7h62vbcqsx two bar magnets are brought close to each other, the magnet07xsb, v6q nh ac7hn2ts will

  If the south pole of one bar magnet is brought near the north pole 8y1 kj(a5h7eyk/bq :3l l gieeof a second bar magnet,kgeehkie8/jql 7 by y51l3a (: the two magnets will

  If a bar magnet is divided into k8kk df,e 1kx)o b9k6etwo equal pieces,

  The Earth's geographic North Pole is :lf1yq9mi )vqmagnetically a

  The south pole of a magnet points toward 6s c*tz82 ll ct3mkab+the Earth's

  An electric current produnxmvx y-xts-)7t 0:* apq3l vzces

  Which of the following is correct?0/lr jbki gdsoz. (rb4bh3d o u9,.pi5

  A vertical wire carries a current straight down. To the east oew-w i.y ybc.4f this wire, the magnetic field py.-.4wbwe yc ioints

  A horizontal wire carries a current puc8 5p1 cbub:2hmc, xstraight toward you. From your point of view, the magnetic field caused by this cp ubc:mu2p hc 18cx5,burrent

  A current carrying loop of wire lies flat on a table top. When viewed from abj. ,b ;reg c6+cgtxo9pove, the current moves around the loop in a counterclockwise sense. What i96 .gxcp, eco;+ bjgtrs 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 on a table top. When view,blh ue-t)f/t3ngn8uztpi39 mzh 0 a3 ed from nlhtzpua3u9,/z8 h mt t0-3 i 3)fegnbabove, 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 magnetic field

  The SI unit of magnetic fiypct5d d;*wh /eld is the

  1 T is equivalent to62xuor u0do (z

  The direction of the force on a current-carrying wire in a mpw dr0d2h. nx4agnetic field is described by which of the foll0dp . drw4xnh2owing?

  The force on a current-carrying wire in a /e93+: zjfg0pez:-.xlnqre kcf gju) magnetic field is the strongest when

  The force on a current-carrying /*.vga mi*eii3 ec )a6orvr4xwire in a magnetic field is equal to zero when

  A vertical wire carries a 8bk1 uivajh3q5c( vm i .wvg16current straight up in a region where the magnetic field vector points due north. What is thiw11 v. cj8qgmik(a6 b3 5uvhve direction of the resulting force on this current?

  A charged particle moves and experiem qcz+0knkx ykb7l/ 1,nces no magnetic force. From this we can concludc1kn/7,yk + x kzmqbl0e that

  A charged particle moves with a constant speed through a region where a unbr .p ne 917,sstyw:1psmzzh;iform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting on this particle will be maximum when the parts:7 ypb1;r 1p.ze,w mts shnz9icle moves

  A charged particle moves across a constant uhgx)50yxy jt em8/l8magnetic field. The magnetic force on thj)mh/xx8 y5g8te yu0l is particle

  A charged particle is injected into a uniform magnetic)80zp6.xr7x(espuhcm xi r3r o3 fi9r field such that its velocity vector is perpendicular tos(.)xohrmcx3f7 ie ppi9rr 8z ux3r06 the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle itnm(q)1tq *kr9rzm d; s observed traveling in a circular path in a uniform magnetic field. If m(q mr zt*k)rqd1tn;9 the particle had been traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e travels in a circul 1fpm /ep(uwje*k-s *1g:ocvu ar path in a uniform magnetic field. f */e-up(1e1cpg: vmjwk o*usIf instead the particle carried a charge of +2e, the radius of the circular path would have been

  At a particular instant, an6fz2xzcz.y75ga gi,1zyluwj.) yp9 j electron moves eastward at speed V in a uniform magnetic field that is directed straight downward. The magnetic force that acts on xl)z 16p7,5 wj yzzygfgz 92ayi.uc.jit is

  An electron has an initbnbj9 dd0 (a;cda z7)lial velocity to the south but is observed to curve upward as the resultdaz7bjd0 ( )lnc;bda9 of a magnetic field. The direction of the magnetic field is

  An electron moving along /2wmwg zcuezohk,z b4 n4la+c(p :5(qthe +x axis enters a region where there is a uniform magnetic field in the +y direction. What is the direction of the magnetiu bcnw pklhqw a:5 zc+4/,g2e o(4z(zmc force on the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced by a long straight current-carryi,ll(jf8 :tu .n6*u adajqq q8dng wire is

  At double the distance from a long current-carrying wire, the stren8q 4mk8hm3 nfxgth of the magnetic field produced by tq8f x3 hnm8k4mhat wire decreases to

  Two long parallel wires placed side-by-side on a horizontal table carry identijnsod. xnogm p,3a)o8h( y;c ;cal size currents in opposite directions. The wire on your right caxa(m no),pjs g; 3yhn8ocd.;o rries 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-side on a horizontal table carry idnzl-2cuhnaw*i :0j f6 entical current straight toward you. From your point of view, the magnetic field at 6faijc -w0nn:h*l u2zthe point exactly between the two wires

  Two long parallel wires carry equal currents. The magnitude of the force m+ 9r 3*kiqd8n:nuexq between the wires is F. The current in each wire is now doubled. What u3qx+* idnen m8k9 q:ris the magnitude of the new force between the two wires?

  A long straight wire carries current toward the east. A proton 5tbc+z9 b(nnd6rj g;fmoves toward the east alongside and just south of the wire. What is the direc +jdftrcn zb (g96nb;5tion of the force on the proton?

  A wire lying in the plane of the page caee0mgh;hhw(v mzfc95 1 r+s9zrries a current toward the bottom of the page. What is the direction of the magnetic force it produces on an electron th0g5hh99z r+ e(h cemz1wvms;fat 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 horizontal tablew,e0eic./ get. If the wires carry current in the same dire.ewt ,/eig0cection,

  Two long parallel wires v. nha:ni/p ,wz8(vo i:o qk,e0mbv(ware placed side-by-side on a horizontal table. If the wires weho(aqinm,kb o:w,:v(v /pz.inv0 8 carry current in opposite directions,

  Consider two current-ca, 22qqnwd 9.elrj 9kgnrrying circular loops. Both are made from one strand of wire and both carry the same current, brle2gw 9,2.9qqn ndk jut 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 circu; xjyqe/d zf-5lar loops. 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 magnetic moment of the ly5 -fzxq d;ej/arger loop is

  The maximum torque on a current carryingbj qez) 92kr,-zq 7p)cpjza1 o loop occurs when the angle between the loop's magnetic moment and the magnetic fieldp )rak 1-oqz 27 zqb)e,9zpjjc vector is

  When placed askew in f8cypt3 xzi:3ak4vo;u r w ugol753 o,a magnetic field, a current carrying loop that is free to rotate in any direction will experie;t3 o z:uyfvk i3g8,ux74 owol cpra35nce a torque until its magnetic moment vector

  What fundamental fact underlies the operati)eh69hu z4qhs on of essentially all electric motorshq)4z s h69ueh?

  A circular wire loop lies in a horizontal plane on a table and carries currenzljb9vb(ve 5k/xo ) (t mm*ya4v*q2ect 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 kajcxybov/((2le v9b *t vmq* )e54mzto lift off of the table because of the torque caused by the currents interaction with the magnetic field?

  In a mass spectrometer a particle ob29g hptqzawe+u. ) )kf 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 field is uniform and oriented perpendicular to the velocity of the particle. Derive an expression foz a 9bkphut.2g) )+wqer the mass of the particle in terms of B, q, V, and R.

  A velocity selector consists of a charged particle passing through crossed/gxq;bprlxx*/l w5/h 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 direction should the electric fie5/*lx/ r pxglx;qh/bw ld point?

  A 2.0-m wire carrying a current of 0.60 A is5( kqk.a aqe+e oriented parallel to a uniform magneticeeqaq(5+k k a. field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10ni7g .w0g l*m.f bj,m/y(yl 5q,mjo uf 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 a straight wire carrying 5.1nj,rwi 4wt-y 0 A when it is placed in a -w,i rt1n4 wjymagnetic 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 long has a,s)+w m ,zn1lzw,o7 xnf3unf j mass of 0.050 kg and is in a magnetic field of 0.10 T. What minim1o , ),ju73nzwszx+wf nn,lfmum 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 magnetic +5qe: ia/sa- 1n2+ lely;riiq 8nogo pfield of 0.20 T. What is the magniti:q-ai5+irg yeol +n ep/l 1o82s n;qaude of 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 +6cf0 6: f8rerrm kkuga 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 speedix2s,;iqq 4 blf hyl(0 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 spe5d0iv17cc)ro-tg emk/zl aopy50t0zed $4.0 \times 10^5 \; m/s$ 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 wi+ :/ 8f1qgfbvr+m ztpts ygs+)th 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 f9a uw:4nazcowl.3+g 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 qk xdxw 0ct3+/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 cur:0(stufajhg ul ee3;z2cas 7*rent of 25 A. What is the magnitude of the magnetic field at a distance of 0.15 m us*tuheaj 7l;sg2a( c3:0fz efrom the wire?

  A high power line carrying 1000 A genol4m81m l;t qkerates what magnetic field at the ground, 10 mk l;mt qo184lm away?

  How much current mus.:z qwcw r5v/ vc7uc5gt flow for $1.0 \times 10^{-3} \; T$ 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 m;bl1zs y-dv k9agnitude of the magnetic field due to the wire equkv zs9dy ;bl1-al to the strength of the Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currelpgoocl1kp9r.ki3mg8;4k/ f nts of 10 A in opposite directions. They are separated by 40 cm. What is the magnetic field in the plane of the wires o; 4 1p3ok ggpcfl.il9m kk8/rat a point that is 20 cm from one wire and 60 cm from the other?

  Two long parallel wires carry )z5tl3ng+b x- pj:f vx/7lsv vcurrents of 20 A and 5.0 A in opposite directions. The wires are separated by 0xlz3 /gf n7+vltvb) s:j5xvp-.20 m. What is the magnetic field midway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A /uaht :o s:gomlq/oj:j9 7c )iin opposite directions. The wires ar9/cj/u)oth o :qaosi lm:j:7ge 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 2.0 A in the same direction. They a5z2-0ri6javch vj )e-jrj/ipre parallel to the z-axis, and they pass through the corners of a square of side 4.0 cm p-er2i -c )vi0jvp6 ajh/rz 5jjositioned in 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 opposite directe+ ; zojcmql2qgy8 e51ion. The wires are separated by 0.30 m. Find the magnetic force pe 8e oe1+z25cqm;qlygjr unit length between the two wires.

  What is the magnetic field at t7h)ly xzc5zh(he center of a circular loop of wire of radius 4.0 cm when a currentc7hh)lyz5x (z of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with . c -0qusnrl+rw(tq 9i5000 turns of wire. What magnetic field is produced at the center of the s9iu c.qtr+ qrnl-w0 s(olenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carr/h-;eykgq 5q wies a current of 4.0 A. What strength of magnetic field will it have at its cenk-y qge/;hq w5ter?

  How much current must pass through a uh,0o2xdd1+cwh81eo e 9x 1nxfr+ nkh400 turn coil 4.0 cm long to generate a 1.0-T magnetic field at theoh0+1eh1n2dxwhx u1,8 nxfe+ k rco9d center?

  How many turns should a c rq*zd+gfj)ro ua/:+10-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 carries 6e up+8vio*1xv6g gdje(p3:v),ov qyd .0 A:ydq8+je1*ppgiv vvv, u36edo)go ( x if its dimensions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform mmtiljjly n2- )rg x) 0a/e77xua1j1kp agnetic field of 0.30 T. The current in the loop is 2.0 A. What is7 1m1aa02 jjtri7yng jxlku -)xe)p l/ the magnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sectional are01(gkn ndiz5wa $0.12 \; m^{2}$ 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 cue:7vh xdc k: 0o:jy7lbrrent of 2.0 A is in a magnetic field of 3.5 T. The loop has an area of:decl v0:: obj77xyk h $0.12 \; m^{2}$ 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 fiedj.:cyudnp3 2j **a fjld of 0.30 T. The currentp.y fj:c a3*j*ndudj2 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 w7-(yq3 q*j xxve w+injnxfu 59j,jq3lire of radius 0.50 m is in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. u9j, jj7nq+eqx35( xn-xvy l* wiqjf3 What is the magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop o0gfar byx w ;nc5lc3y c(0h-h68yfv3 bf 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 spectrometerj:mku0 smdz0.niz; p +, 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 w6cy* d+ -lnoemith 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 ts.3:q-bc0g5 fduiw*vw:ryd c hen moves into a magnetic field of 0.040 T. What is the radiu 5: dfqcd0y-.vw3sgibw cru:*s of the proton's resulting orbit?

  A proton is accelerated from rest through 500 k vr r+chj,0o0d5 ,rqtV. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion.r 0jrk,,qro +t0 c5dvh Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potential difrylmu 8bk4 sii uge.kh6:4 e67ference of 10 kV before entering 87l6ekebuyihg ri s.44 m6 :kua 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?