If the north poles of two jlen 44f8/u m-,xa 5u7yfyo ik+ hjvg+bar magnets are brought close to each other, the magnets wilu k,yan4e4j+8hm x+ygj7l/vou if5-fl

  If the south pole of one bar magoui( 6l3a;awynet is brought near the north pole of a second bar magnet, il(a;63 uow aythe two magnets will

  If a bar magnet is divided into two equal piecej;un)gcvp ,9q s,

  The Earth's geographic North Pole i:hrvzp9u) wl-:yf m)is magnetically a

  The south pole of a magnet points toward the Earo 2xvils98 23bsu7 vh r)b:ymyth's

  An electric current xq h s pw5k;k+ui-d22xi q-;ejproduces

  Which of the following 8wxw/: f9e ad*v/n )-ooca pmdis correct?

  A vertical wire carries a current straight down. To the ew2 hi18o+mhwl ast of this wire, the magnetic field poii mw+lh1wh28onts

  A horizontal wire carries a current straight toward you. From your po; x*omj* sf yo4lp4mcba43yqdz-wa+ ,int of view, the magnetic field caused by *aopz+sbwqx *j ,4d-co4f4y l mam;y3this current

  A current carrying loop of wire lies flat on a table top. (ed)*keff: x).ytjh fWhen viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magn( )xfte:kj)e*f. hfydetic field caused by this current, outside the loop? The magnetic field

  A current carrying circ3d b6/qr,78qa9 jm;a5 yua dlmcp;lweular loop of wire lies flat on a table top. When viewed from above, the current moves around the loop in a counterclockwise sense. What is t/ ,;cdymp8; m3a wqla5ul7e9ra6bq dj he direction of the magnetic field caused by this current, inside the loop? The magnetic field

  The SI unit of magnetic fieldq1msfffe:zs3h 3 ,wb- is the

  1 T is equivalent tono-/flpn/q c: uo*:it

  The direction of the force on a current-carrying wire in a magnetic field issorxu 9v )l64y described by which of the foxrv 4u) 9os6lyllowing?

  The force on a current-carryin9/nfz1zyj*u;kq d nkm 0ql +xt zem./q rg;k.,g wire in a magnetic field is the strongest when

  The force on a current-carrying wire in a magnetic field is equal to zer4it ,9r0av qoxmo.-j no when

  A vertical wire carries a current straight up in akjwr.*p6 d*h4b t 4jyu region where the magnetic field vectowtdhu* p4br.*6yj4 jk r points due north. What is the direction of the resulting force on this current?

  A charged particle moves and experiences no magnetic force. From this we coz :y q9 xt4t;bq;)en pvnbh)5an concb)t zqey)q4 p;: 5v;on9bnxhtlude that

  A charged particle moves with a constant speed through pq +mq- /a0g:r9 w2myp- pjwcaa region where a uniform magnetic field is present. If the magnetic fi-aqgw2 +jw-: /amy0mpcp9qrpeld points straight upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constant magnetic field. The magned izqp2 o,t/i(tic force on this paitpz q i/d(2o,rticle

  A charged particle is injected into a uniform magnetic fieldgaz4. e8ufbldc+yq- - such that its velocity vector is perpendicauebyg 84-fqdc+- zl .ular to the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling inq x-gkk xi;shw */(8kd a circular path in a uniform magnetic field. If the particle had been traveling twice as fast, the radius of the circular pat*k k(kq;x8-ihd xw/gsh would be

  A particle carrying a charge of +e travels in ,cv8u ydtb-v bo7j2q31td tu )a circular path in a uniform magnetic field. If instead the particcod q,vy 7tju)tu2-v8b 31db tle carried a charge of +2e, the radius of the circular path would have been

  At a particular instant, an electron moves eastward at speed V in a unif0rsfo/pdop 4*0o j l4lorm magnetic field that is directed straighf0rpdl04l*pjs/o o o 4t downward. The magnetic force that acts on it is

  An electron has an initial velocity to the south bu6x e77/fj ovyzx(4ox* spz cm4t is observed to curve upward as the result of a magnetic field. The directionv xxz(s44xf*o77 oj mz /py6ce of the magnetic field is

  An electron moving along the +x axk91:kat: x k0zqg h:mzis enters a region where there is a uniform magnetic field in the +y direction. What i 9 khg:a1:mzz0 qkk:txs the direction of the magnetic force on the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field producedn -v ,c0b5armpg.mo9a by a long straight current-carrying wire is

  At double the distance from a long current-carrying wl i*c;gy7s*3*kptvc v oyi5j (ire, the strength of the magnetic field produced by that wire decreasestos *5* v*ycjii(v;gk 3ply7c to

  Two long parallel wires placed side-by-side on a horizontar0sue+ 5zw6:+ 7fhfu r;ffasll table carry identical size currents in opposite directions. The wire f:+r 50 zu;7fhuesf+6arfwlson 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-by-side on a horizontal table carry i137hsza5 i ikhvhpfj + (dch-8dentical current straight toward you. From your point of view, the 15i-v 3jachf7hh +( hpdkizs8 magnetic field at the point exactly between the two wires

  Two long parallel wir lb2d mhpo(t2yj() k2yes carry equal currents. The magnitude of the force between the wires is F. The current in each wire isy) 2 2p2mbol(hdj(tyk now doubled. What is the magnitude of the new force between the two wires?

  A long straight wire carries current toward the east. A proton mov2 ;prh h-v0j v7wqakwm-r)a7 fes toward the east alongside and just south of the wire. What -r0v7; havr )qpf -kmwwa72jhis the direction of the force on the proton?

  A wire lying in the plane of*iei1-pwk,) pa : ms hwrp*y7j 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 moving perpendicularly toward the wire, also in the plane of the page, from your rwkp*pi1,h ai )er:* p-wjs7my ight?

  Two long parallel wires are placed side-by-side ) orw.ft u)sf81cbvt, on a horizontal table. If the wires carry current in the same direcfvsto1. t,c 8uw))r fbtion,

  Two long parallel wires ko;k uszi 9/3zg4e h5em3duu8are placed side-by-side on a horizontal table. If the wires carry current in opposite direu z e3e9d/3gih muzs; k485oukctions,

  Consider two current-carrying circular loops. Both are made from one straqx hsy))mcjd;xr k./-nd of wire and both carry the same current, but one has twice the radius of the other. Compared to tyq-mhdx/j.r x ))csk; he 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 a:yanbu6c 8t fp*y:h:xre made from one strand of wire and both cfb::t * ucn6pxy8:h yaarry 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 larger loop is

  The maximum torque on a current cx8hf+ 4 6*c uq i-*gogc*ghmtzarrying loop occurs when the angle between the loop's magnetic moment and the maihgg4**q x ct8o6u hg*z+fmc -gnetic field vector is

  When placed askew in a magnetic field, a current carrying gn3q .6bub5ya: clo(rtfk -rg:;bhp5loop that is free to rotate in any direction will exper-.gk5uo :ph:6r ;3ag 5 byqtln( rbcbfience a torque until its magnetic moment vector

  What fundamental fact underlies the op 75 swajo4r opgd ;3f/0v7n9faih)bxqeration of essentially all electric motors?aj/qwg7 nb9 s 4f0i vahpdoro7;3f5)x

  A circular wire loop lies in a horizontal plane on a table and c48:e sgo zvt x-m7a8xxarries current in a counterclockwise direction when viewed from above. At this point, the Earth's magnetic field points to the north and dips below tv8 to-8a:x sxxmeg z47he 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 is accelerated thrgcm:*wxywg4 4 ough 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 iw4:gx g4my*wcn terms of B, q, V, and R.

  A velocity selector consists omd93 ;x zzxlu.ui ti3/f a charged particle passing through crossed electric and magnetic fields. The forces exerted by these fields are in i/z3zmt u; dix.9x3l uopposite 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 field point?

  A 2.0-m wire carrying a current of 0.60 A is oriendtm8 . )o1 ajymr.ewa. gpbk67ted parallel to a uniform magnetic field o 1bj)m.. ktg aoer. 7ywpa6dm8f
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 16iad zauq2,wjnywx*sf z8vtzh9:189 0 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 5.0 A when it is plaw tu(.cq8 ;pxrdnp;c tj5mk66 ced in a magnetic.p6nxw; t j (crk58p6cqm;d ut 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 mass of 0.050 kg and is inrf ;je zj8v b*;0bvfk8 a magnetic field of 0.10 T. What minimum current in the rod is needed in order for the magnetic fkbvvjf0eb z* ;;rf8 8jorce to cancel the weight of the rod?

  A stationary proton is in a uniform magnetih;nv+4/ q jypsd9dcr)jw 8:f ic field of 0.20 T. What is the magnitude of the magnetic force on the y f d+dj; qswhi:4jp8v/rn)c 9proton?

  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 hw-))rf/glw *)bge exh*kj/t 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 spee*ev t u0idq,t2fz0)dfz 2 k1sed 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 withn)w/br*4sy42*natr.3dy2ik g dy fg dn7mi4 q 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 spe- ze3q vvai rlo.ko(f1r)+9ks ed 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 speed0pe;,yglyhh-+xugv o wco 9 ,5 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 of4e4my53p v mei $3.0 \times 10^6 \; m/s$ 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 xxwh74-p)u 4oh6aayh A. What is the magnitude of the magnetic field at a distance of 0.15 xo7w a-h4pua6hx4h)y m from the wire?

  A high power line carrying 1000 A ge +xdd617qyrle gre34 inerates what magnetic field at the ground, 10 m away?y6 d4e 3qlxirgr d+7e1

  How much current mustujypj/:i 0 c3-zoenb iu+ *9jw5grzb: 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 gs jam*e.g055flhb .z A is the magnitude of the magnetic field due to the wire equal to the strength of the Eartbeh.s5m0*ajgz5 lf g. h's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents of 10 A in opposite directions. They ar2uvambc cc 9;b*eg/7 ie separated by 40 cm. Wha 2ceaim vb*u9g7;c /cbt 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 cur,p z5 l4quvujj9rs :l-rents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the magnetic field midway betw9l:5 -u zsujlq,vp 4jreen the two wires?

  Two long parallel wires carry currents of 2gc)-er3i ;;oq( qps mk0 A and 5.0 A in opposite directions. The cr;q-q)p3i mekogs;(wires are 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 tz3)pyf6 op3u ak6r1pii 7q a5uhe same direction. They are parallel to the z-axis, and they pass through the corners6o pyriiau3qu73ppa) zk 16f5 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 wiri5l yoss3-y *nes carry currents of 5.0 A and 8.0 A in the opposite direction. The wires are separated by 0.30 m. Find the magnetic fyinos*35 syl -orce per unit length between the two wires.

  What is the magnetic field at the centeao2. kp/.h8bjgr y) jjr of a circular loop of wire of radius 4.0 cm when a currenta8.h)po rjjjb .2y gk/ of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. Wh+yk2w2f)hb :q) krxn iat magnetic field is produced at the center of the solenoid when a cuky )fk+nqbi2h2: )xwrrrent of 10 A flows?

  A solenoid with 500 turns is 0.10 m lcd giq-l7x (qjyz/p,6ong and carries a current of 4.0 A. What strength of magnetic fielciq7yz -dq/l pg, 6jx(d will it have at its center?

  How much current must pass through a 400 turn coil 4.0 cm long j5k en ogec1fw :a,tsy9*p.e3to generate a 1.0-T magnetic field atw1 :oe 3sa9n ctgjf5*kpye,. e the center?

  How many turns should a 10-cm ley myk/h m8c4:ong 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 t:+k.mzpn nhy f e-/sa ij)*dc7hat carries 6.0 A ifnejhpkm -a)dny+* 7czf is /.: its dimensions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform k. 2psh8txpw.ztr x 0;magnetic field of 0.30 T. The current in the loop is 2.0 A. What is the magnetxkw .pth20sp xr;z8.tic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wi-3p+q gwark2q hkfa82re 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 fisnj3b ;axft/: ;; gnup9wg 6tueld of 3.5 T. The loop 9uu:x6 /f gn;w; s ;jtgbatp3nhas 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 magneti* p oh/wi.adz0c field of 0.30 T. The current in the wa.h/o0*zdpi 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 wire of radius 0.50 m is in a uniform mail*pke7dv:6(*ixla mgnetic field of 0.30 T. The current in the loop is 2.0 A. What is thx(vi6 ** :iedp7lk male magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop sef) 7w2w: vmbe1a5ytof 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 (chaff 8mfw 1qci o5omd60xmub1)0rge 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 with v,k/gj 39 y,)pndrlyfaelocity $6.9 \times 10^6 \; m/s$ 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 g,.6d rhqz6i..vpe (hso wp5gand then moves into a magnetic field of 0.040 T. What is the radius of the pro .5he (rg,.ziw6ovgdhs p.6 pqton's resulting orbit?

  A proton is accelerated from rest throdxd oym+44+ 8jitly8 lugh 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Determine the radius of8dmxjy+4 ydil 4t+8ol the path it follows.

  A beam of electrons is accelerated through a potential difference of 10 kh-m6p6*eawroiq; 5,z x fbw-(arged3V before entering 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 r6hi3aepfmdw b,5zq- r*wr(aog; x 6-eequired if the particles are to be undeflected?