If the north poles of two bar magnets are brought c4u exw8vwl52 duvet +v)*ei0 glose to each other, the magnev uv)2 *4wvt0elue85ex d+gwits will

  If the south pole of one bar magnet is brought near the north pol8q nfskro(x95ih 1 tu:e of a second bar magnet, the two magnets wil: 5k ohnr9x8fi(tq1su l

  If a bar magnet is divided into two equal piecesw-q tr w1c,8j,k:fw 21mhpqpi5mn4sd,

  The Earth's geographic North Pole is magnetdy,fl+in0u+cc* 2q ujy h ua;o;r8v)g o6n/ltically a

  The south pole of a magnet points toward the Ear 1a);q3xecnyjwoo- .ry )g b.bth's

  An electric current prd7 ci)ym35mpt oduces

  Which of the following isf fk x:nqm wysi4m00;3 correct?

  A vertical wire carries a current straigxbo3; epeh y62ht down. To the east of this wire, the magnetic field point6 3x2eoye;b hps

  A horizontal wire carrys n8y-w(oda9zhmj nk y;36b3ies a current straight toward you. From your point of view, the magnetic field caused by this y 9hyd-wkns;n83z3(yb j amo6 current

  A current carrying loo:am- ef bdrg*:qf,*nwp of wire lies flat on a table top. When viewed from above, the current me -fb*r *gan:wm:qfd, oves around 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 on a table toud3ospj +g,rek.a h24p. When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magg 42e 3u.jdrpsohak ,+netic field caused by this current, inside the loop? The magnetic field

  The SI unit of magneti1kv-ykgify1r c1/v9 lc field is the

  1 T is equivalent to 1aut.al 34eimt9zcx)

  The direction of the force on a current-carrying wire in ap 8ixs )z:xck0 magnetic field is described by which of the fock8xsx0):iz pllowing?

  The force on a current-carrying wire in a magnetic field is the strong,bbwz26ml; q xest when

  The force on a current-carrying wiguycc ns es4;z 0n8a07re in a magnetic field is equal to zero when

  A vertical wire carries a current straight up in a region where the mk t wisk9u-(n5;g-rioagnetic field vector points due north. What is the direction of the resul;ktno-9 ( rws5ik-giuting force on this current?

  A charged particle moves and experiences no magnetic fork td;kyaeo*i 3eo;n18 8nnn-gce. From this we can conclude t8ytgoak1n n;;i3nkn e8 ed-o* hat

  A charged particle moves wim b kc;,e4242t pdkjoxth a constant speed through a region where a uniform magnetic field is present. If the magnetic field points straight up ke4x4bc2jmotkp;2d, ward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constant magnetic field. fm82bcx nu,-3xhn +h o The magnetic force on this particc b nox-fmn uhx+h2,38le

  A charged particle is injected into a uniform maxcedic34 a1+so87dmx f . t6wegnetic field such that its velocity 3t8 se +4w6.xfeo m1id7d cacxvector is perpendicular to the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in a circular path in a uniform m fghfe:x sy6+rf4w-k ge)f26t agneti w: 26ge +)6reh sxfg4kff-fytc field. If the particle had been traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e travels mif835kr t l.ide*z aiko g.84in a circular path in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of theo.i3id5ka88eig kf*t.4 r zm l circular path would have been

  At a particular instant, an electron moves eastward at speed V in a unifod9 k sfvge:;a,e0v3 givkq5x * h(ls2drm magnetic field that is directed straight downward.:5*;,3gskhek s xvda9l2feiv0v d qg ( The magnetic force that acts on it is

  An electron has an initial velocity to the south but fe f1o;y gsv5-7)cuwv is observed to curve upward as the result of y;o-5vcu )fs1weg 7vf a magnetic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a region where ttd gij)nxv158g* j:cihere is a uniform magnetic field in the +y direction. What is the direction of the magnetic force on tdjc5 *gvixt1 8jng:i)he electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced by a long straight current-carrying wire ibm(n /0bm/wjjmxx 7 j:0vbg( ys

  At double the distance from a long current-carrying wire, the strength of the +xav x8zl1f;n -dbj -umagnetic field produced by xu; ab+x -18jfzvn-ld that wire decreases to

  Two long parallel wires placed side-by-side on a h,2y (lu vbz1m.k x9yn y2*ccbkorizontal 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 yozc1bcklyky, x*.9 2(v2m by nuur 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 ident2(m gny5vhy.e xuq9h5 ical current gv5hm2e 9h(yunx.5qy 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 currents. The magnitude of bqrf. 28fpuh)z.b+njd byk.,the force between the wires is F. The current in each wire is now doubled. What is the magnitude of the new force between the two wiresb+.p ku qb.rz8)2yh.fbnd,fj?

  A long straight wire carries current toward the east. A proton moves tow5m 6(qf en/meaard the east alongside and just south of the wire. Wh(mq5afnee/6 m at is the direction of the force on the proton?

  A wire lying in the plane of the page carries a cd5.k(he bq a51(8jcbwt0 gcw qurrent toward the bottom of the page. What is the direction of the magnetic fo(ekad j ( 5bhwqc081.cg5bwqtrce 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*j7khhg7a+ 9syao ts - on a horizontal table. If the wires carry current iks- *othhaas9y7g+7 jn the same direction,

  Two long parallel wires are pl-ajop1sm/ (vgu3*tkdaced side-by-side on a horizontal table. If the wires carry current in opposite directions,1v sk3/ md*tja goup-(

  Consider two current-carrying ci ce;g)jll(x-lpr1 2w rrcular loops. Both are made from one strand of wire and both carry the same current, but one has twice the radius of the other. Comparwr;gp (xrl1jl)2 c -leed 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 made from on1ffb7,i wrjce)6b * u8cgl+jve strand of wire and both carry the same current, but one has twice the radius of the other. Compared to the magnetic moment of thewbgr+b iefvucj)7 618,l c *jf smaller loop, the magnetic moment of the larger loop is

  The maximum torque on a current carrying loop occurs wxct *d0:s+dc pkigo9 7hen the angle between the loop's magn9s+ *g7cxco p i:d0tkdetic moment and the magnetic field vector is

  When placed askew in a magnetic field, ab sqwji) 0isfdl6/z/pq ai5v9 w 4q40f current carrying loop that is free to rotate in any direction will experience a torque until its magnetic momen6iw 0f4/jqa pbsd 0)vf5zsqwql 4 /ii9t vector

  What fundamental fact)3ls7 mhhdnk y/u1a v1r0z r:g underlies the operation of essentially all electric motors?10 rdvan/ )kyglh:31h7mz rsu

  A circular wire loop lies in a horizontal plane on a table and carrie):u2yiod7 qrhv+2,s 4ga)loi agfql6s current in a countercloy6 ) ila2g7, qrgdholq:)4iaf+u sv2 ockwise 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 currents interaction with the magnetic field?

  In a mass spectrometer a particle of mass m and charge q is64he: tw/zvyq+0mges 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 unw0:eeq6 ygszhv 4/+ tmiform 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 particlt2q oj)tsiku1: f+ ,dpms,)lbe 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 a1f bq:lu )pitko+ds),mjs,2t 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 76y/bmna ae3f bg24tz magnbf72mg 4a6 nbez3t/a yetic field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 1;abjq5adng(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 meterj+opefj; wfh0 rwmii l61q-.,b0ai 7x on a straight wire carrying 5.0 A when it is placed in a magnetic field of 0j,a+ qpmhoflw0j6wi-.70i 1 ;iefbrx .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 gjc9c,et-ppy oquayt7 36u:2 kg and is in a magnetic field of 0.10 T. What minimum current in the rod is neede-coguj u726t,aq:3pytycp e 9d in order for the magnetic force to cancel the weight of the rod?

  A stationary proton is in a uniform magnetic field of 0.2nnb4;; ompdh4((ejnf 0 T. What is the magnitude o don;neb4p ;mj4f( (nhf 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 axt,k26xc(- t12vjf*(pcw v,du yyc c2i( ctf a 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 spe sz t8aedm n213dc+h2qku 1y7tsagy67ed 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 8k9k d :-aho dvi7uxm(due north 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 with a speed ofz l *w:z) afwq9 52sf(vjvovg2 $8.0 \times 10^6 \; m/s$ 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 w q8 qw+gdqop:fg * p+k5c73kma 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 tr:gw8c qluz *v-4m c+$3.0 \times 10^6 \; m/s$ 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 Azna* tj.kw8 i8/ fb/je. What is the magnitude of the magnetic f i.tea8zjw/8k/*nj fbield at a distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magnetic field at the ground7qmyo(8*:yq . g ewplu, 10 m away?7( wqy 8uq*gp:elyom.

  How much current must.ej (k;.mt280 ogs efuj*gpzb 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 strai ,(4fa:r r2i6*d4 tfholnjhab ght wire carrying a current of 5.0 A is the magnitude of the magnetic field due to the wire equal to th42a(rah j*n, idolbrf: 64f the strength of the Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry ck+4h-gz cc my8urrents of 10 A in opposite directions. They are separated by 40 cm. What is the magnetic field in the plane of the wires at a point that is 20 cm from one wire and 60 cm +c8zykh-gmc4 from the other?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite direction 1kwc7 8-deaia7f y8mcl bxx586.ktaos. The wires are separated by 0.20 m. What is the magnetic field midway bek8mck86itya- 7.bxe c8waf57 1a oxl dtween the two wires?

  Two long parallel wires carry currents of 20 A and us(gz.9 wc:6cbru 2rm5.0 A in opposite directions. The wires are separated by 0.20 m. At what point between the two wires are the contributions from the two ( w.gz r :ms2rcu9bc6uwires the same?

  Four long parallel wires each carry 2.0 A in 8wwoh b:(b)bgnni-z;the same direction. They are parallel to the z-axis, and they pass throughw -b(:n; o8ibgnw)hzb the corners 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 5.0 A and 8.0 A in the opposite direct, h7: bfu lrxf*z n*zz)j7f3egion. The wires are separated by 0.30 m. Find the magnef:*)fbjhlr*z,3ue 7 z fx7 gnztic force per unit length between the two wires.

  What is the magnetic field at the center of a circular rzp( ff0wh*59 5 ofisvloop of wire of radius 4.0 cm when a current of 2.0 A flows in f9vfsrhwiofz0* ( p55the wire?

  A solenoid 20 cm long is wound with 5000 turns of wir wjl; ltk9eux.,c1bob2g* ,ixj yy: .we. What magnetic field is produced at the center of the solenoid when a curw.ijg bo;lk ye,c:.j,2x1b u wyx* l9trent of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and c itpvjb07,9;2cktcsq si ji:* arries a current of 4.0 A. What strength of magnetic field will it hs*v:,bs7jp2 c; jik90 ttqiicave at its center?

  How much current must pass through a 400 tm-b+ xek8m-ujg0x*rf urn coil 4.0 cm long to generate a 1.0-T magnetic field at the center8xfg +rmbj*0k -xe-mu?

  How many turns should a6kj( ug/a11wc aiev3 i 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 rectangu+j7whet f8cf(+q r+oe lar loop of 120 turns that carries 6.0 A if its dimensions are 4.0 cf+(+ jrtee + wqc7ho8fm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a unip(-ni)t pe ,wyform 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 pp ()eiwpytn -,erpendicular to the magnetic field?

  A circular loop of wiergzvi.+y zp* m1h/j6 md:gp)re of cross-sectional 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 a magnetic field of 3.n,lanpo :p r.35 T. The loop has aa 3pp.nrl:n,on 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 0.50vvk 7t)i0k o d.yrgw- hq7;,pw 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 pq r0 .7wghy)p,dkv ovw7itk- ;arallel to the magnetic field?

  A circular loop of wire of radius 0.50 m is in a uniform magnetncs :kz.70p 2dhe6uq -hhh93e y+yfheic field of 0.30 T. The current in the loop is 2.0 A. What is the mhhe2ekynuecz :ps96 f7.3-q + hd0yhhagnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop of p u)52jbt(dwdarea $0.25 \; m^{2}$ 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) has a od/8zrsth )k0 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 velocj-(3 3lrqgab twd.ib:qn/e86cye2 r uity $6.9 \times 10^6 \; m/s$ 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 throug2h9l2. tiz +ej,gwul ch a potential of 1.0 kV and then moves into a magnetic field of 0.040+cuejg.lz h ti,2w9l2 T. What is the radius of the proton's resulting orbit?

  A proton is accelerated frpwxm21b7x5 +lndx )qja*q4crg m ;o* dom rest through 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Detera2xo1p)b5cjg ;4*7lrqx wmd+ m q nx*dmine the radius of the path it follows.

  A beam of electrons is accelerated through a potential difference of 10 kV beforvl85 gs*r( wgre entering a velocity(8gs*grrv5 lw 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?