If the north poles of two 8k1gw-6 -zk g5vk;ysuaes(gb bar magnets are brought close to each other, the magnetsg8s u--1kkb5k ezw;g(g ayv6 s will

  If the south pole of one bar magnet .eadzbvhtg8l5tcc;1x k b l5)vm.l4( is brought near the north pole of a second bar magnet,m h zgbvl c5l.bv4(e15a. k l)t8dx;tc the two magnets will

  If a bar magnet is divided in s,- n(va9oc zoou:)f:sj2xwcto two equal pieces,

  The Earth's geographijg3za :ws12./tmz gey5 fumyd, 0s0 kpc North Pole is magnetically a

  The south pole of a magnet poirwzk65b7: pt,mgdzou /murh0b3 g8a/ nts toward the Earth's

  An electric current produck)mpl ( dimak ;b-9 26l(g7hfno ;wssles

  Which of the following is cobt1cimc: z a))rrect?

  A vertical wire carries a curreb5o my-h,; qftx b(gm(nt straight down. To the east of this wire, the magnetic fielt5fqx, (gmbo(m ;-bhyd points

  A horizontal wire carries a current stra ky ,s2cbbj)5t29 ooakight toward you. From your point of view, the magnetic field caused byabk295yk2jo bts o,c) this current

  A current carrying loop of wire lies flat on a tabu9 qoepxh32x3 le top. When viewed from above, the current moves around the loop in a counterx 93qeoup h3x2clockwise 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 wir8op-x m nptau3 xa325g5ptpv,e lies flat on a table top. When viewed from above, the cu2 p8p p3uavt3o ,gt5-nx5mp axrrent 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 evqn,zwu0c 00 the

  1 T is equivalent to++ *x4kdc2jnn y:odfm

  The direction of the force on a current-carr5v8e ska5k l s7(nvv5xg/wog-qz 1vqb);ks9 m ying wire in a magnetic field is described by which of the follosk v qgv8)qk -e1kzv5ov ;sgl /957wsx5b(anmwing?

  The force on a current-carrying wire in a magnetic fieq 0f 6vjflzp,.v7pm 3rld is the strongest when

  The force on a current-carrying wire in a magnetic field is eq3 *ur0k xvght;dr*v+hual to zero when

  A vertical wire carries a current strai7agt3vzl9a;q fhx44t ght up in a region where the magnetic field vector points due north. What isa;73 4 4 agxtvl9zftqh the direction of the resulting force on this current?

  A charged particle moves and experiences no magnetic force. From this we can wobyv lj5zfa qa3(+*7 conclude w5v b7a(yof zla*3q+j that

  A charged particle moves with a constant speed through a region where a uniform or93h6 zd msx ;ob9,sjmagnetic field is present. If the magnetic field points straight upward, the magnetic force acting on this particle will be maxb dsz6o3o jx,s9r ;m9himum when the particle moves

  A charged particle moves across a constant magnetic fielk bzb2bt8 ysnr26/6fcf( 6 kdhd. The magnetic force on thtk6f6z cd2/fn6( bs2hb8 kybris particle

  A charged particle is injected into a uniform magn: faa9grh,e,s;krmvf j:47z aetic field such that its velocity vector is perpendicular to ;zv9 sgm4a,fja ar7hf:er k,: the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is obseomlm9ww-cc 4 8rved traveling in a circular path in a uniform magnetic field. If the particle had been traveling twice as fast, the radius of theow cl4-m9c8wm circular path would be

  A particle carrying a charge of +e travels in a circular path in a un)i(z+jyczhen,ll ,m /iform magnetic field. If instead the particle carried a charge of +2e, the radius,z )j/cih l(lynem z,+ of the circular path would have been

  At a particular instant, an electron moves eastw :8r(+fxx/rpal nww /uard at speed V in a uniform magnetic field that is directed straight downwwa f+p:/xun(xrl8 w/r ard. The magnetic force that acts on it is

  An electron has an initial veloc*nrplt)qdh pi uh5(i)) ,qhv )ity to the south but is observed to curve upward as the result of a mi ) qu)( vir5np)p,dlt hh)q*hagnetic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a region where ih6zho)1t ;bfthere is a uniform magnetic field in the +y direction. What is the direction of the magnetic force h)zht1 bfoi;6on the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produlkeg5r -,qnq wrc2t52 ced by a long straight current-carrying wire is

  At double the distance from a long current-xj phpw ;zkdkn,j26zq x1 05wr3t r)+scarrying wire, the strength of the magnetic fieldjps5;zwxzh dr1 nk,+tpw rq6j3kx02 ) produced by that wire decreases to

  Two long parallel wires placed side-by-side on y/b cv8 h rloatqe,m*42d -k,sa horizontal table carry identical size currents in opposite directions. Th y/kr8s,q2a*o,ce hl4mdb -t ve 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 wires placed sidezd e+ nf:5csl4-by-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 tzs:d lc+5 fen4wo wires

  Two long parallel wires carry equal ci9 apuu p)1phhth782s urrents. 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 fo8as9hth1ph2u i7 pp u)rce between the two wires?

  A long straight wire carries current toward the east. A proton moves towardu,yyht5o3u l2 the east 5l h2,tuyuyo 3alongside and just south of the wire. What is the direction of the force on the proton?

  A wire lying in the plod aow91us n6*bdj7 kz96kdif 393cf nane of the page carries a current toward the bottom of the page. What is the dir dko6f9 s icj3d9owbdnu az961fk*n37ection 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 side-by-side on a horizontal ta e rojj)92x* 8zzdrk4eble. If the wires carry current rex r48kdo zjze29)j* in the same direction,

  Two long parallel wires are placed side-by-side on a horizontal table. If):e9xg9ti:h0uyyx .r 0ozdtu the wires carry current in opposite 9 yxtty)uodugze0 9.:x0:hr idirections,

  Consider two current-carrdqt1 hseggr3r84k ,cw5 ;6rr lying circular 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 field at the center of the smal1dqh 58t;,3lgrew c6srrg k4rler loop, the magnetic field at the center of the larger loop is

  Consider two current-carrying circular loops. Both are made from one strand of jkw j,: 3n485z iiqrlk69v4b)v0ql yikva0qdwire 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 momen0940i8d vva63jkkvkbwn i :l qrq4y z i5qj)l,t of the larger loop is

  The maximum torque on a current carrying loop qgnv m 3h as:2j:), )c)o2diblzp6eji occurs when the angle between the loop's magnetic i n bl3)j) qha:)2 v,do c:zjmp2g6isemoment and the magnetic field vector is

  When placed askew in a magnetic field, a current carrying l *wzvp8qja)3qhfz18p oop that is free to rotatqhq*zf3j wap)1z 8 v8pe in any direction will experience a torque until its magnetic moment vector

  What fundamental fact underlies the operation of essentially algp ofx- n*37y4yl+goql electric motorspqx -7onoyl+*34gg fy?

  A circular wire loop lies in a horizontal plad(5 yg(gi r7ijbnpd)/)oh+rune 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 of the torque caused by the currenr+ 7i()h dyg/ub njo(5)rip gdts interaction with the magnetic field?

  In a mass spectrometer a particle of mass m and charge q is accelera9 -* 93 jrxtkvcyl1bheted through a potential difference V and aej*t9-bc1 xhv 3k rl9yllowed 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 terms of B, q, V, and R.

  A velocity selector consists of a chne j:vsa igozh;td15tvj4: i, x( ajv/v0am+ 1arged particle 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 following, disregard the magnitudes of the fields. In a velocity selector, the particles move toward the east, and the magnetic /m:vn1s;,0 jg5at + a oj1(a4tevj :vh dxivizfield is directed to the north. What direction should the electric field point?

  A 2.0-m wire carrying a current of 0.60 4acny86 mwt,zA is oriented parallel to a uniform magnetic field nt86 w ym,cz4aof
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a direction o+6 bsd iht:sl4f $30^{\circ}$ 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 wheny+qud9jf)(w). x i;/ryv ytj daf 5k.z it is placed in a magnetic fieldjdvif()dfuy 9j+)z5;y.ywqar /xt k. 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 mass of 0.050 kg and is in a magneticjg 5d,a- awme3 field of 0.10 T. What minimum current in the rod is needed in order for the magnetic force to c35a, -gje admwancel the weight of the rod?

  A stationary proton is in a uniform magnetic field of 0.20 T. What is the magne .fx femp wzm+g p2h8)jq7h;6ite z8h+ f p2)q6mwf7he;xp. gmjude 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 a speo3kj6e0rez (m ed 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 speed of jn(pi-d4 0f2mkmf y16-fzh if$5.0 \times 10^7 \; m/s$ 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 shoq4c tc;guu kq*3y3/peed $4.0 \times 10^5 \; m/s$ 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 spee1tnhoa/e-9xs p0n b ;sd 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 wii0 yn,5f* 9y2*iercs2 wmqyojth 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 of :z+08cqba:tx do/sbk$3.0 \times 10^6 \; m/s$ 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 carrlvp *d n/6eew7ies a current of 25 A. What is the magnitude of the magnetic field at a distance of 0.15 m from wl/7vp e*6ndethe wire?

  A high power line carryinc0v/5a,tqndbl 4evqvan )-y ;:vv o i+g 1000 A generates what magnetic field at the ground, 1)lve va /ovnbiyac:nv+;d4v tq5 ,q0-0 m away?

  How much current must flowm)b s et8r8m hr/i7x/x 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 qaa.*5fik.sj *hrbwfd41i)x magnitude of the magnetic field due to the wire equal i.i. 1r *aw)qhd4afsbx*5fkjto 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 dire r;o2 xsj2b4izyqw77 actions. They are separated by 40 cm. What is ty2;o q zjw xsa74r2ib7he 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 apzs0((3wlrdmdiun zla7 m;(:8(vbvcnd 5.0 A in opposite directions. The wires are separam(3(a(l v uzcrl 7d(ndb8iv:m ;s p0wzted by 0.20 m. What is the magnetic field midway between the two wires?

  Two long parallel wirgek9z4tv e ihgu5a im7n( 9z*:es carry currents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. At what point between the two w*gi ez9e:n 95vzhk(4m i tuag7ires are the contributions from the two wires the same?

  Four long parallel wires each carry 2.0 A in the same dia kom iy15di3,-r- vjwrection. They are parallel to the z-axis, and they pass through the corners of a square of side 4.0 cm positioned iniviko 3d5j1,ywa-rm- the x-y plane. What magnetic field does one of the wires experience due to the other wires?

  Two long parallel wires carry curre+t8rekmk m*o x4s mh8 5)o.ipjnts of 5.0 A and 8.0 A in the opposite direction. Te)opjmk mtsr4mo* i x+h8. 58khe wires are separated by 0.30 m. Find the magnetic force per unit length between the two wires.

  What is the magnetic field at wnslo- uz9s7e/hotul84;z1 l05 rjq z the center of a circular loop of wire of radius 4.0 cm en57 /l4 j 9-wsuh1lozzu8qrl t z;o0swhen a current of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 trz)6 tgav4l9 j24 jh6orpd7lcurns of wire. What magnetic field is produced advtl4cj p)49hg72rzjla r6o6 t the center of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m lo9o 0eci j5*osm7sh+x ang and carries a current of 4.0 A. What strength of magnetic field will it have at it oass *e9hi0j+x m5o7cs center?

  How much current must pass throu-o:9ly4 szuwi5k e b/wgh a 400 turn coil 4.0 cm long to generate a 1.0-T magnetic fy:liw/e 9 ub54sow-kzield at the center?

  How many turns shoul,fmo1zt2;c+ b r)sn upd a 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*)e)r*5: qj ipdum pfa carries 6.0 A if its dim:qa er i) *fpmpud*j5)ensions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radiu.izvacx6djuv 8 )8 t4j5z9ebis 0.50 m is in a uniform magnetic field of 0.30 T. The cu . 4bzc8) ztdv6ia5x9je8uijv rrent in the loop is 2.0 A. What is the magnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sectional arxz1nrvwzvrw0;g ,sf 9;/qi s 2ea $0.12 \; m^{2}$ 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 fiepxa 1q7- 9drbrez5fkl*6 p. kqld of 3.5 T. The loop ha-f6ke9b7q1 zq p d.xar* k5rlps 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 is in a uniform magnetic field of;.nho2..rzk 2gc n:(5slw( j lccrw dd 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane of the loop is parallel to the magnetic fiojgs(2rr.cw :c5l n.wc 2;. dn(lhk zdeld?

  A circular loop of wire oh3u7hr*9a 5.xx sf qoyx (n:rff 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 parallel y axsh.(o *u9q7xf3nxfr :rh5 to the magnetic field?

  A circular wire loop of arew390 (v fkm tc5qlabaj04yq 4ma $0.25 \; m^{2}$ 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) nse0bgg2np4e s 5 6(mbhas 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 rz( mzog i1;+wwith 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 ofzv*-yb fp. j +8hjtku/ 1.0 kV and then moves into a magnetic field of 0.040 T. jzvpfy/ .u h8j+ -tb*kWhat is the radius of the proton's resulting orbit?

  A proton is accelerated from rest through 500 V. It enters a magnetic field fj1shyc0:+qf ;q gx n8of 0.30 T oriented perpendicular to its direction of motion. Determine the radius of the p0 yjnqh+x8g:ffcs1q ;ath it follows.

  A beam of electrons is accelerated through a potential 7 d)x(kyvvo f 1lb8r/6xm *dmfdifference of 10 kV before ente)*6oxmr8vm fdx 1f(v kydbl/7 ring 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 undeflected?