If the north poles of twoj /0j--tw1jb0agkum p .8s wxg bar magnets are brought close to each other, the magnets w01 pgmu0-/ajj . jkb -gt8wxswill

  If the south pole ofsgx (irfk36l( one bar magnet is brought near the north pole of a second bar magnet, the two magnxi6r(g3 (sfkl ets will

  If a bar magnet is divided into two equal pi pk;2 g/:lbumdeces,

  The Earth's geographic North Pole is mag8o ooqt- 5v1a a)dphle;jdu9/eaf; 0 snetically a

  The south pole of a magnet points toward ta93 9o7rwawa04jwnyx0k ,crlhe Earth's

  An electric current swg3+cznv.y / ;yxp;eproduces

  Which of the following is cprx0,*kod1v)fu j mb: orrect?

  A vertical wire carries a current straight down. To the east of tto2 mwep)l-b/ his wire, the magnetic field pomo e)b-l /w2ptints

  A horizontal wire carrie;tdy (fj6-a-y. lvc bl lax*)hs a current straight toward you. From your point of vie*yfa6 x)c-da(.;j bvlhll t -yw, the magnetic field caused by this current

  A current carrying loop of wire lies flat on a table t7(tpa b)tej 514plvc9n fdo(pop. When viewed from above, the current moves around the loop in a counterclockwise sense. What (f o19) tdp5(nbjv4ple pt7 cais 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 oahs7sp k/ok myg,f0x-a .u3 9in a table top. When viewed fromhg0x/ 7-3 fam osp,ak i9k.yus above, 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 field is thev u,ws pmtjc+0v hc( oroca.n3+g;w.7

  1 T is equivalent to,e3mskd ;-f pg6 -rhed

  The direction of the force on zv ll(rk9 socb93 o*j2a current-carrying wire in a magnetic field is described by which of thv(klo*9l c j92rozsb 3e following?

  The force on a current-carrying wire in a +:6k gzf zwkv8magnetic field is the strongest when

  The force on a current-carrying wire in a magnetic field ix*zcxfv17w7c brm* , ds equal to zero when

  A vertical wire carries a current straight up in a region where xp+ 7m)zr73nwe7;dpw ccio8 othe magnetic field vector points due north. What is the direction of the resulting force on this currentwp;+)p rm8 wnx7ccd oez7i3o7?

  A charged particle moves and experiences no magord q 3ky/,e,h,d9p saxbp :itihv 8)-netic force. From this we can con9ao8h,xhe yt v3/p-, bdpski i:rq),dclude that

  A charged particle moves with a constant speed)odq4;8)q mh:cb xb up through a region where a uniform magnetic field is present. If the magnetic field p qhb8 m):x4q pudo;)cboints straight upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a cond /i9d yq ljlwfe67-e-stant magnetic field. The magnetic force on this pe/d ie6fqld y 79--jwlarticle

  A charged particle is injected into a uniform magnetic field such that . l/:k;x2ho j8 zh2vjzn)thwszzu 9*b42 imsoits velocity vector is perpendicular to the magnetic fieldh29h 8 o imnzl z2sj jszbhtk:.wv4 2ox;*zu)/ vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in a circular path ize 2h7m i kzev(-u7b1jn a uniform magnetic field. If the particle had been traveling twice as fast, the radius of tvzk7e(j uzb2 1ih-em7he circular path would be

  A particle carrying a charge of +e travels in a circular path in a u :gqgsbti4g4u9-:j* dr) desgniform magnetic field. If ius g id:s4tjrbg9g)4e-gd :*qnstead the particle carried a charge of +2e, the radius of the circular path would have been

  At a particular instant, an electron moves ea;vq3v7f2kpb kqtf,f /*9sl7cd-fvz ostward at speed V in a uniform magnetic field that is directed straight downward. The magfpvfo sldcf793tzv*b 7 q/k- ,;f2 vkqnetic force that acts on it is

  An electron has an in 7,nhhr f 5/. bovly91h2kbqbsitial velocity to the south but is observed to curve upward 2o9hnsq.bb 7 b 1hhlf/ky5r,v as the result of a magnetic field. The direction of the magnetic field is

  An electron moving alotd6()fhg+nyu-kplwh 2k m o+ (ng the +x axis enters a region where there is a uniform magnetic field in the +hgpuy-f +(2lwn( )+tdmo 6h kky 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 s*cnk2crbzug omr9 8s*2dp,j;traight current-carrying wire is

  At double the distance fro:rxb lx*z+(g ;k 86ebk m,xxbhtic)e/ m a long current-carrying wire, the strength of the magnetic field produced b m),6hitlbxx e;xx k:b/(kcebr+*z8gy that wire decreases to

  Two long parallel wires placed side-by-side 04xqqlzsc -) m0m 2vmlon a horizontal table carry 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 magnetic field at tqlms2zx0l -)0qmc m4vhe point exactly midway between the two wires

  Two long parallel wires placxcc- wox;/da) ed side-by-side on a horizontal table carry identical curra dcxcw/-o )x;ent straight toward you. From your point of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal c8w, 6/ 1xcpmgycr0 iffurrents. The magnitude of the force between the wires is F. Thfw10 6gym pcfri,/x8c e current in each wire is now doubled. What is the magnitude of the new force between the two wires?

  A long straight wire carries current toward the east. A protonp7 .ntwnu8 +e fx5o7vq moves toward the east alongside and just south of the wire. What is the direpfun. o+ tn7ewvx 57q8ction of the force on the proton?

  A wire lying in the plane of the p v*n6wcm(xxi l)n*zmh +/t2dpage carries a current toward the bottom of the page. Wz+nxdm26( )*xnw p ticvmlh */hat is the 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 ey(:nii/pb t,side-by-side on a horizontal table. If the wires carry cu tpb:ei,(n /iyrrent in the same direction,

  Two long parallel wires are placed side-by-side on a horizontal tab-f nof)d hkm6by2 -h)glsd40cle. If the wires carry current in ob)dyc)f 4 2 n 0o-ldmgf6ksh-hpposite directions,

  Consider two current-carrying circular loops. Both are made from one strand of n* dffbjuhfv.7-f*z3u 2;wjowire 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 larger l7uofufj**f 2z -wdnf . ;h3vbjoop is

  Consider two current-carrying circular loops. Both are made *h g gtk(ykysc dbiw5x6 1w)z7, (h6rvfrom 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 largerv ,(bk5t6dsc*( )yyrgz7i hgw6xhk1 w loop is

  The maximum torque ogf* 3kb9dqwf .)iyf,ln a current carrying loop occurs when the angle between the loop's magnetic momgi3fk ),q9*lffy dbw .ent and the magnetic field vector is

  When placed askew in a magnetic field, a curren8 0dka-wp;g-yyu8oo wm, 7nret carrying loop that is free to rotate in any direction will paodm o8,ryw7ug; y-w-n k 0e8experience a torque until its magnetic moment vector

  What fundamental fact underlies the operation of essentially all electric mwie)* gka,ob)kvx:;3rmy +z:il 6ih motors?vk ,aml ob3 6zyie +rwi*i;)k: )gmxh:

  A circular wire loop lies in a horizontal plane g/kuge fext.;yl 02o-on a 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 the coil tends to lift off of the table because oygt u-go2kfe /;l.0xe f 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 throu0blkc ;k.1pn k. j-vyegh 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 b.p0 vl;ejky. c -kk1nterms of B, q, V, and R.

  A velocity selector consists of a charged particle passieipozt:.t-3vmd rq 3)x3x+ i-ke u(wing through crossed electric and magnetic fields. The forces exerted by these fields are in opposite directions, and only particles of a certain veloc3e 33 wx tqr ii(o-zim +xuk-)v:te.pdity 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 field point?

  A 2.0-m wire carrying a current of 0.60 A is oriented parallel to a unifun*ye+3 ai6q u6ha1 jb;q /evworm magnetic fiew evh6 +qa;j/ eq6ayin13*buu ld of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a direction gpb +c ymw ;54nqm.f5jof $30^{\circ}$ 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 carryin u* rw0fnint-3g 5.0 A when it is placed in a magnetic field of 0.020 T? The 3iu-* r0fw nntwire makes an angle of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long has a mass of 0.050 kg and 8egq(2ovp +meq q op0ih(7c2h is in a magnetic field of 0.10 T. What m(q8mh heg poq2qei27 (0o+cvp inimum 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 uniza23t tuyqwi2k( 9)ocform magnetic field of 0.20 T. What is the magnitude ofozqtc9 u a)wt23(y 2ik 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 a speed ovl* 8 pjwa18kz ;uqqb1f $5.0 \times 10^4 \; m/s$ 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 sp jyua;.3s vdnm -+zwv6eed 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 speehx2(z-m,ffn s+g8 wpkd $4.0 \times 10^5 \; m/s$ 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 d el3:dhk .*oja 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 witb oz) gp 1/il3n8v cyoi 7t3bxuto3d/;h 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 nnsr9kx /g; nr0zr/8t 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. What is theuzn 4o)w8 dsx22g2rw x.n1cxe magnitude of the magnetic field at a di22zx) n rgnw1o8e ucx 2ds4xw.stance of 0.15 m from the wire?

  A high power line carrying 1000 A ge4stux;qyey gc -8 q av6 p)dp6v1ih/;fnerates what magnetic field at the ground, 18/1f6yq6y; -etdgvih;x spu pcv )4qa 0 m away?

  How much current must j,ubu: tig6d+l sj;n,0,wpx2 5xciulflow 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 oxcwb,o15(:gpa i t ,/rknqz +wire carrying a current of 5.0 A is the magnitude of the magnetic field due to the wire equal to the strength of the Earth's magnetic fiel(51 xo/ ,ntr+ wqack ozpgi:,bd of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry d8fs*) oclzo/ (zlk.f currents of 10 A in opposite directions. They are separated by 40 cm. W/ fz ocfok)ls (8.l*dzhat 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 op/ bjmz0ra l2 :ges,x(jposite directions. The wires are separated by 0.20 m. What is the magnetic field midway between t,x r2zg je 0jlm(b/s:ahe two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in o lhp.f7cqz7* -mcoe -gpposite directions. The wires are separated by 0.20 m. At what point bpf.c-zo-77cq*l ehgm etween the two wires are the contributions from the two wires the same?

  Four long parallel wires each carry 2.0 A in the same dire gyq0t,t(c6:2k0q )ub1rfa h9 lprim vction. They are parallel to the z-axis, and they pass through the cf p t2k l,q9b:y)rth1c ai0umv6gq 0(rorners of a square of side 4.0 cm positioned 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 5.0f uiykrd*q8lp3 gr ynidb 35i1xz 9)jk9l8l,/ A and 8.0 A in the opposite direction. The wires are separated by 0.30 m. Find the magnetic *q8lkplg9/zji3r d bn1rd3l,958u kx yyif)i force per unit length between the two wires.

  What is the magnetic field at the center of up7 lltk08q 6ka circular loop of wire of radius 4.0 cm when a current of 2.0 A fkl68u tql7k p0lows in the wire?

  A solenoid 20 cm long is wound with 5ze1 kxv+hsne ti* ;g6ze)u cb9zu d:63000 turns of wire. What magnetic field is produced at be;)+966vu1xe ztuzke dg3z n:*c shithe center of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and c0- a.c-l0aaul wp. )ruv2ls pparries a current of 4.0 A. What strength of magnetic field will i -ar0v)ppaupusl..0lc-2l a w t have at its center?

  How much current must pass through a 400 turn coil 4.0 cm longyqr m)k 8syp1ctmku5o ;(k+,n to generate a 1.0-T magnetic field at the ce,8+;kt5us yqp ) romk1ncy(mknter?

  How many turns should a 10-cm long solen1 t *6mi*p rtjaqf9o8npd4;yroid 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 cari6:zj8gma: 5ssxhl2(ql m p7uries 6.0 A if its 65sx2h:pluqa jm8lm 7:si z(gdimensions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic field of 0 3o/wpj khk;*d3 4(mj9larokz.30 T. The current in the loop is 2.0 A. What is the magnetic torw4oh;(9*j zdkp km3jkoa r/3 lque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sectional +r e51 w584n/sf *w/vn:ce huvtytenu 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 of 2.0 A is in p ( .q+nw5wao8tbrl*y a magnetic field of 3.5 T. The lo 5*w oyw(bnpt.qa+r8lop 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 of8kcu*,we y e2h 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 loop is parallele*,wyh8c u2e k to the magnetic field?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic fiel-; 5 wf;cd(ihvr,bq gfd of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane of thhdqfi,f b5 cvr-;w ;g(e loop is parallel to the magnetic field?

  A circular wire loop ofyu(fw.3s pv 1wpnvaej2eu 5, 6 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) xlp .hg8-(x,n jgj3t nhas 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 velocity edzzx*s sou+41b7.dz $6.9 \times 10^6 \; m/s$ 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 into a magn u 4g)ljl.dt; sdlev*6etic field of 0.040 T. What is the radius of the proll)vgst.;j4d lu 6de*ton's resulting orbit?

  A proton is accelerated from re6 zwaocp3mo. m8qvb(4st through 500 V. It enters a magnetic field of 0.30 T oriented perpendicul o ap3o 4(v8zwcm6bm.qar to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is acceleratu.zt2oe ok; 4k -whu4gtbj*b)ed through a potential difference of 10 kV before entering a velocity selector. If the B-field of the veloc-zt);utokgk4.u*b jo2h b4 ewity selector has a value of 0.010 T, what value of the E-field is required if the particles are to be undeflected?