If the north poles of two bar magnets are brought close to each other, the iy xvw3:2x5e mmagnets wx3ye5m:x vi2 will

  If the south pole of one bar magnet is brought near the north pole of a sehj1dfx1 j 2q7k ) +5ymiqu)00nfz.da)ldcq omcond bar magnet, the two magnets willlkdj).jm7 uf)mzh1d)dq 0 qyq+ 0oi5cfn2a1 x

  If a bar magnet is diu o7adp;5up wb; 2p5fxvided into two equal pieces,

  The Earth's geographic North Pole is magnettt90vyqpvk+61 s 97haapf,dwically a

  The south pole of a magnet points to7ou 8feldg2a04 iz (u:nk 9jzz 2kbc5dward the Earth's

  An electric current prn g1 r. s)zdvw*0kbz1ooduces

  Which of the following is correct6e5dvl 4o6t hh?

  A vertical wire carries a current straight down. To the east of this wire, tgl mpz no il-;e;au1;(he magnetic ;l-;up1zm;nagiloe (field points

  A horizontal wire carries a current straight toward you. From yo kxw/yl63v oi3ur point of view, the magn/wly 3io3 xkv6etic field caused by this current

  A current carrying loop of wire lies flat on a table top. When do*;e4v7ovnnviewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of t7*voov 4ednn; he 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. ;*n*;;o 6awyofqu gzrWhen viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic field caused by this g6w*y;zqr*fu n a; ;oocurrent, inside the loop? The magnetic field

  The SI unit of magnet,d;rjf3u m3gu ic field is the

  1 T is equivalent toek )lqgv au1iu+a9 (e3+ mo6ac

  The direction of the force on a current-carrying wire in a m,ldei2zg lc9i7gq 1zi 5f;3shagnetic field is described by whis7 2gd3 leici ;i hz5f1lg,z9qch of the following?

  The force on a current-carrying wireo (*bdj qncn 2mt7-b+z in a magnetic field is the strongest when

  The force on a current-carrying wire in a magnetic field is equall uyrygry. +(92fx8k. qnkb+dbmzo 3 ) to zero when

  A vertical wire carries a currentpo37uv 57zn; . m0/ x*tgoro9cjsojnt straight up in a region where the magnetic field vector points due nor/x7.os to ;o nnou57*rj3 ct9mv0jgzp th. What is the direction of the resulting force on this current?

  A charged particle moves and experiences no magnetic fmlmqz4ehjexb7e qt0 z804s )6orce. From this we can conclud7xje80)tqb6m0 sezq lm z eh44e that

  A charged particle moves with a cdse;aio s-i39onstant speed through a region where a uniform magnetic field- so9i; siea3d is present. If the magnetic field points straight upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a conk l*ao +ciqio j*u9wsg8v9i;+ stant magnetic field. The magnetic force on t v;+kojwl *soic89u9q +iiag* his particle

  A charged particle is injected hpxmo2 2vi 9lr6fthz :f3t2b4:qps)s into a uniform magnetic field such that its velocity vector is perpendicular to the )t4 lzr f :3vs ofqsith :6mb22ph29pxmagnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling izxta2uj,v* 2 gn a circular path in a uniform magnetic field. If thj *v xgaz,22tue particle had been traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e tr5,: lpz tt/ypx:mau)d avels in a circular path in a uniform magnetic field. If instead the particle carried a charge of +2e, the ra m,z:)/typdup: 5lt xadius of the circular path would have been

  At a particular instant, an electron moves eas 4 e.zav*yu/uqtward at speed V in a uniform magnetic f a*evu 4/.qyuzield that is directed straight downward. The magnetic force that acts on it is

  An electron has an initial velocityc sj mym*myyyu17g5z7j 7-yo 4 to the south but is observed to curve upward as the result of a magnetic field. The dire omg 5z*14ym ysmj7u7y7c-yyjction of the magnetic field is

  An electron moving along the +x axim p0t6wh 7gyg5s enters a region where there is a uniform magnetic field in the +y direct 7pgm gyh6w50tion. 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 prois-+asfyk6 h9 5qer q2h2if.f1gt v a2duced by a long straight current-carrying wire is

  At double the distance 8wj*6vary j:*, rydw-usqgr7 from a long current-carrying wire, the strength of the magnetic field produced by that wire decreases*wa :rr yjqy dur-*,67vgw8 sj to

  Two long parallel wires placed side-by-side on a horizontal table carry identica97hh*j2oj- - nplv8-d cv9h.kytv ntml size currents in opposite directions. The wic*vjm.8ph- olh9 d nttk72v9 -vj n-yhre 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 wires placed side-byb4 0cze3):fg ;whnpc (.xwpx)gj 8opy-side on a horizontal table carry identical current straight toward you. From your point of view, the magnetic field at the point exactly between the twb c3n y4z)g)jwpx px c;woe8gh0f(.:po wires

  Two long parallel wires carry9,lltdnf fhbjm /3 x6/fxmc1- equal currents. 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 f ,jx/ b6hx9cfd1t l/3-mflmn between the two wires?

  A long straight wire carries current toward tuza59:*sunl;qs ;umk he east. A proton moves toward the east alongside and just south 9u:* na;suz kql; 5musof the wire. What is the direction of the force on the proton?

  A wire lying in the n 3qqk6 +wmc+kawm;1u plane of the page carries a current toward the bottom of the page. What is the direction of the magnetic force it produces on an electron that is movinma ku 1wm+cq;kw +q3n6g 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 horizontald2cw2, sk(h mr table. If the wires carry current in the sm wrhcs,k (2d2ame direction,

  Two long parallel wires are placed side-by-side on.u o.2l ;xntm1qvao 1y a horizontal table. If the wires carry2 .uolo qt;vy11n x.ma current in opposite directions,

  Consider two current-carrying circular loops. Both are made from oneqq)fla qmn ,g)bw3e+5 strand of wire and both carry the same current, but oqn +)q5 q,am gbwle)3fne 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-carryiqa 1q)msp8fizgm v:99 ng circular loops. Both are made from one strand of wire and both carry the same current, but one has twice the radius of the )qzq9 a9m:ismf8p1gv other. Compared to the magnetic moment of the smaller loop, the magnetic moment of the larger loop is

  The maximum torque on a current carrying loop oclw*g(wv l ,8iuxrj 2m;curs when the angle between the loop's magnetic mow, i 2uwlglj vx;(*rm8ment and the magnetic field vector is

  When placed askew in a magnetic field, a current carrying loop that is freea, 0hs3ls;dn dou je7v+ k6ji; to rotate in any direction will experience a torq 7 +v;jhodsind3u ;l s,06akjeue until its magnetic moment vector

  What fundamental fact underlies the operation of essentiallygue glfb o st,:60uj vv7k9e91 all electric motors?, o kv6e0eu7u1 g9fsj9ltbvg:

  A circular wire loop lies in a horiz03 abmszf 6kmss2n-4h ontal plane 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 beb-4m sz2kma36 hns0sf low the horizontal. Which side of the 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 of mas: ada ,jr6aeeg0 meg*q* eiy71s m and charge q is accelerated through a potential difference V and allowed to enter a magnetic field yaga:7me, g0 6 eeed*q1ajir* 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 terms of B, q, V, and R.

  A velocity selector consists of a charged particle passing through crossed elen d0 ,1upcxx0hoe7h m:f)ef xd6cqk2/ctric 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 electri xh)/20e1:ux mock cxd0dhfe 6 p7nq,fc field point?

  A 2.0-m wire carryin a jcn5c,v-/cb.e(vk rg a current of 0.60 A is oriented parallel to a uniform magnetic frv-kjc/(ce.a nb5v, cield of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a dy d (i6yq8dw e bl79/vxjpx:4iirection 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 when it is placeyjod5kar g -*p,9kj;qd in a magnetic field of 0.020 T? The wire makes an ang kay jk,9 *5pjq;dr-gole of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long has a mass of 0.0j1t0:k wtuc -j50 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 cancel the weigj:1kjt-cuwt 0ht of the rod?

  A stationary proton is in a uniform magneicg ;y: aaupu241 p2ibtic field of 0.20 T. What is the magnitude of the magnetic forgaa: u4;uyc2pi2p bi 1ce 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 spe ty ohh60/x/di 4v)oeted 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 spev:-w5ve. gqut- u9tds,*ne+igrh tno 7ufx) +ed 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 wi:b x izo/kuk8/.ku b,1etngw)th 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 dlit 0 69fkad;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 spes ffxy/ 1cep l6l(p09zed 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 9 oh qlbibmx;a: 065cb$3.0 \times 10^6 \; m/s$ 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 carr)1dq9as tqoy 9ies a current of 25 A. What is the magnitude of the magnetic field at1qyq9otad 9s) a distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates wauhv8fzdce/0k ;5 t r1 tudp*1hat magnetic field at the ground, 10 0dzc t r8u*vu1tp/ ;5k1e dahfm away?

  How much current must flow ( ktcu r.7k1zpdy8i -bfor $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a l6spz jtl3ml 3f cj*9+wmi j5u(ong straight wire carrying a current of 5.0 A is the mau56l 9*j i(plf3swc3m tjzjm+gnitude 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 car9xfioviwg*- 9c/ceyc 1ct+g:ry currents of 10 A in opposite directions. They are separated by 40 cm. What is the magnetic field in the pl/9c+wc- *1cgi yivtofe:x cg9ane 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 20jnw92hvdb8ryli l2o5c*-9 24mebu l h A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the magnetic field midway between the two w28* 9-vbc rh ju9d2l2ei5b 4o wmylhlnires?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite directionfnrn1xm6m *js 48y kq*s. The wires are separated* ms8 yj6f*m r1kq4nnx 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 carrim2g+bfs 0hu0)fko5 sy 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 positiof0) s gmsb52+ufohk0i ned 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 Adg-xt mwx: zhyi:v.x vx17 +jb8gtmly679ae / in the opposite direction. The wires are seiy/bm+ jyl.w tm8 1x67 x v7g:tg:hx9-ve dzxaparated by 0.30 m. Find the magnetic force per unit length between the two wires.

  What is the magnetic field at the center of a circula3m ckr5/jr mn 2xq3 4(m+urktrr loop of wire of radius 4.0 cm when a current of 2.0 A flows2crrmmk/n mr 3( +u x3jrqkt54 in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. What magn8ht ly0j2 +ty9c bunm2etic field is produced at the center of thjh2c2u myt0btyl98+ne solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 wte /p6 gb1rro gs:;hhcj ut)bfr;wt5ex( /34m long and carries a current of 4.0 A. What strength of magnetic fie rg5 wfs j; t6;ct/oexrwhg r:/b4hb1u 3pet)(ld will it have at its center?

  How much current must pass through a 400 turn coil 4.0 cmjw -kdei(n9nm c42.0-m2 esbmup) ry ru/d vd+ long to generate a 1.0-T magnetic field at the center?n-0c.vuym s4nd/eki92ermj2r d(d)u- m bwp +

  How many turns should a 10-cm long solenoid have if it is to xr b*o ,mfznkt2 /z6fdq 4+)kygenerate 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 60oczi mlx lna8au rty*)(+) l(x*3k nz.0 A if its dimensions are 4.0 cm xltyi +xm*0 r *oznlaxk)nl(( 8uacz)3 8.0 cm?

  A circular loop of wire o+cr 4ni-jo2dibf ;n1rf 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 d-+rnnif4 ;oi jc2b1r torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sectional area a re,gfj-4n uc +7p3jtav :7yh$0.12 \; m^{2}$ 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 3cdmo. /33ptdr .5 T. The loop has an acpo/ m3d.dt3rrea 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 fi9kh.gqvvi5d9 gpu1;iw7vh 4f+ pt p.held of 0.30 T. The current in the loop1kpiw ph u vqht ig49dfgp.;59hv.7+v 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 magnetic field78ajp/ :pb)u) qhw.jsks s b9s of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the pbua)p 7 jj8:shb)qs9k p.sws/ lane of the loop is parallel to the magnetic field?

  A circular wire loop t1kw sf) 94 g gph q6ya97ea// 1jkrtzbe)v)fxof 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 partvl5s(lwn flo1w 401+2kqb lhpicle (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 wim03y 4n5c3b oml,5lp pcr;amm th 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 thro/;+vfvjwxjn33o j s8 a3wdsh, ugh a potential of 1.0 kV and then moves into a magnetic field ofvxs8,wsjjhda3;o 3+/w j3v fn 0.040 T. What is the radius of the proton's resulting orbit?

  A proton is accelerated from res d5 y8cr,-rhyht through 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion.c8,h5 d-r ryyh Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potential differencexws*y0 , j.jxp of 10 kV before entering a velocity selector. If the B-field of the velocity selector h w0xjyx.sp*j,as a value of 0.010 T, what value of the E-field is required if the particles are to be undeflected?