If the north poles of two bar magnets are brought1eh ilc-- 8a4kbo9 mpfr0qg9s close to each other, the magnet1r-ceq49-hs p li moakf9 g8b0s will

  If the south pole of one bar magnetpz s81myj 3a+d na3mq7 is brought near the north pole of a second bar magnet, the two magn3sj z1m+mnpdqa3a7 8 yets will

  If a bar magnet is divided into two equal pi2.gcl iie )n2yeces,

  The Earth's geographic North Pole is magneticd*lki(qt u1 yd e;3m7vally a

  The south pole of a magnet points toward the Efg w507p 6i cq :yp jnwh1q0d+muwo) 9qxt:-tnarth's

  An electric current produc; c8hp/16 x2hyb :ji kzmqhbnls a1j69es

  Which of the following is coro.hyu+qj0fwxl3 ucl 4 00)h jhrect?

  A vertical wire carries a current straight down. To the east of this wire, x ioq5n 8chw5 old s+oj.9.y2-mdk(wx the magnetic field po od5dcoi.o5+l9j qkx.(m s-hww2yxn 8ints

  A horizontal wire carries a current straight tt8e:oi:y xco/+b q9 ofoward you. From your point of view, the magnetic field causc8y9t+qboe :/xio o f:ed by this current

  A current carrying loop of wire lies flat on a table top. Whe mmf,w6qk*3dx: 2 l+u(srpniin viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic field ca (inf k3 l*:su,6mm diwp+rq2xused by this current, outside the loop? The magnetic field

  A current carrying circulardw;dkm8sxt ) vwd0*cl* vd),p 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 the direction of the magnetic field caused by this current, inside the loop? The magnek*;wdd pwvcx* t,0md v dl8)s)tic field

  The SI unit of magnetic field;wepg59vdv dxj7ija-qpv ,h a; :g /7c is the

  1 T is equivalent too4inh. nnut.6

  The direction of the force on a current-carryingdj (, gj3 (ftmoaidv7v0-1 v iisw*,av wire in a magnetic field is describetvaodsd730m aig*-f, ,( j (vvw1ij ivd by which of the following?

  The force on a current-carrying wi g s4w5kf4)+g2fd zlxx qj(e7ore in a magnetic field is the strongest when

  The force on a current-carrying wire in a rs ws88*x0 b8-pbhek gmagnetic field is equal to zero when

  A vertical wire carries a current straight up in a region 9bq x3y)m n+ ,wuoh*wm io2+xkwhere the magnetic field vector points due north. What is th n2)3i*,h+kqywuxm9bo +xowme direction of the resulting force on this current?

  A charged particle moves and experiences nolev3 b4ip: q;txfa2zlo3-kns0n 6nw. magnetic force. From this we can conclude qpkla2xntn3zf bn.;:ow vs0e463-l i that

  A charged particle moves with8kkg t( :gpqhxk-7ws9 a constant speed through a region where a uniform magnetic field is present. If the magnetic field points str( xhgpq8gs:7kwt-kk9 aight 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 magnen*+mvhf;onvb( td 9n:tic force on this particln *n(dot9; f:nmvh +bve

  A charged particle is injected into a uniform mac1.h xx t25juf:4ry bxgnetic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring the p 4 :hxr.y5xbx12cj tufarticle's weight, the particle will

  A charged particle is observed traveling in a circular path kal 3v4bm(k4 d36l ufuin a uniform magnetic field. If the particle had beenul4 b l6avf mku(433dk traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e travels in a circulc *t cmxwjz+q47 n+0 ywem+2rmar path in a uniform magnetic field. * w2m4ewmtm+nyc 0 x qr+zc7+jIf instead the particle carried a charge of +2e, the radius of the circular path would have been

  At a particular instant, an electron moves eastwardzvtpvs( a/; e, at speed V in a uniform magnetic field that is directed straight downward. The magnetic force that acts avt v ;,se(zp/on it is

  An electron has an initial velocity to the south but is ooq/) vk bll).q;xjc4fbserved to curve upward as the result of ol)k./xlcbfvqq ;j4) a magnetic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a region where there is a uniform 00jr+czg -cfs magnetic field in the +y direction. What is the direction of the magnetic force on the electron? (+x to right, +y u+0 sz0 frgcjc-p, and +z out of the page.)

  The magnetic field produced by a long straight current-carrying wire xeo/n, k37l bv 1xs1cyis

  At double the distance from a lon/i e d*gd1m33bj+rwkog current-carrying wire, the strength of the magnetic g b1e *jw 3od3kri+dm/field produced by that wire decreases to

  Two long parallel wires placed side-by-side on a horizontal table carry iden5p7nubj+v/max :kfxu dg6bn.p 6,l 51qvwf-vtical size currents in opposite directions. The wire on your right carries current toward yxg / .mfd-v, +vvpnl56:1 j5anf wpqubbk67xuou, 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 carr9rj ./ ,h 8xncaj.m cln/yy2duy identical current straight toward you. From your point of view, the mjy/ ajrhuncm9yc /n,x.2 l.8dagnetic field at the point exactly between the two wires

  Two long parallel wires carry equal c7c 82 zfj3ebh,in yv*gurrents. The magnitude of the force between the wires is F. The current in e8hbzyfi*3 gvj, 27necach wire is now doubled. What is the magnitude of the new force between the two wires?

  A long straight wire carries cb)a qx5f948ppu1he yu ct i,4zurrent toward the east. A proton moves toward the east alongside and just t4 i bq8fx15uha,4zc)9ye ppusouth of the wire. What is the direction of the force on the proton?

  A wire lying in the plane of the page carries a current toward the bot92g( z7 *owi 7fgt;nxqpu:e.q2d bkbl,x1 efytom of the;zq1i,79fk 2d2bo 7 ufe. egtynw( pqxb*glx: 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 right?

  Two long parallel wires are placed side-by-s z,)d1z3) mtyq2*eyxjdl w ye6ide on a horizontal table. If the wires carry current in the samey d2yeltq)6m*d 3zx yw1) ,jze direction,

  Two long parallel wires are placed side-by-side on a;y tar noh/.j* horizontal table. If the wires carry c/j t*naryh.;ourrent in opposite directions,

  Consider two current-carrying circular loops. Both are made from one strand of c6qzh ,r(; j+*kyxvrgwire and both carry the same current, but one has twice the radius of the other. rcx ; h (gvk6yq+jz*r,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-carrying circular loops. Both arm2ze5wk;-9qy 2wl dk qxt ,mpxga+s *-e made from one strand of wire and both carry the same current, but one has tk mxa9t,m-qd py+; 2wk5szl *e xqwg-2wice 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 carrying loop occurs --vta74 -q9j:fst *y qsm unchwhen the angle between the loop's magnetic moment and the mat tqs 7-y*-h fsn:uj9-q vca4mgnetic field vector is

  When placed askew in a magnetic field, a current carrying lh- rmd/(l* eaixo+c 6aoop that is free to rotate in any direction will experience a torque until its magnetic momehcxra e/o+d6 (*iam-lnt vector

  What fundamental fact underlies the operation of essentially al4n ysjo8+f1ee2d ;s q.eagkgk107t pwl electric motors8ee1oyk0j1 ds +g eksg7wp an2.tf4 ;q?

  A circular wire loop lies in a horizontal plane on a tabln+y0hgw8 6f6u s xy)zce 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 currents interaction with )fncx8y6g6 u0s w yhz+the magnetic field?

  In a mass spectrometer a particle of mass m and charge q is accelerated j)hvp-wq30 zr/ skgc+ k+qzq0through a potential difference V and allowed to enter a magnetrq0h+gc0 kwqz qp+sj-)zv3k/ic 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 cg dq9k*4 vnon 7/c xqkk5r6n.sonsists of a charged 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 field is directed to the north. What direction shoulq k*5qnc gsvk 6odxr7nkn94/ .d the electric field point?

  A 2.0-m wire carrying a current of 0.60 A is orikis bnrl 02son6d/ ; -qf.c:vcented parallel to a uniform magnetic di0lncsn6 r; vo .bcsk-f2:q/field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a d(qoz * bnleo/uazs5: 2irection 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 cary 1wa06*4fsh09)sh uffsdid trying 5.0 A when it is placed in a magnetic field of*) ftssy0hdw 19fsudh f6 ai40 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 (63 deg9b tgsp,e7xed0.050 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 weight of tgsgtd p b6,3(e7d9exehe rod?

  A stationary proton is ii7,: 7ol9-ylb o fkxkln a uniform magnetic field of 0.20 T. What is the magnitude of the magnetic force on the protono7fl7 ikxllk,b y9:-o?

  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 speei iql twe ,m2/-d/ d:ivzs)tkbrl9p93d 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 :h5 wmu 8u lv x9n91wtil2 xy8dkw4:olk4b5zdspeed 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 travelinch2d ixrd t*(0uv1i g-g 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 949wym bdtn v;yqzm.p7aw2a s5jt2x/ 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 magnetic force of the electron.

  An electron moves wituo-;t q ,smhl 8mvg87dh 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 speed2o c5gbsdgza( g2p-29v3tew i 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 the magnip47 x1j5g5x/s9c 0aazge vyaptude of the magnetic fielzxe7 xa04aj5 1 9/gp5pysgvcad at a distance of 0.15 m from the wire?

  A high power line carrying 1000 A g6g1ml1hau p6:gut lp 5enerates what magnetic field at the ground, 10 m awaytu p1ha: 6g 61mgl5plu?

  How much current must:s7nbrtdz)4c lsrg +4 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 A is the mhfkj(x+0 :zc0rk1 mk pz p;0mnagnitude of the magnetic field due to the wire equal to the strength of the Earth' pmm: 1(nkkrk;f 0jpzh0+c zx0s magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents of 10 A in opposif86vozyleyk f.5w8 27s 8uqfzte directions. They are separated by 40 cm. What is thee8.uzwk ff65lyvsyf 2 oq78z8 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 cariy gunc3th4 ;;ry currents of 20 A and 5.0 A in opposite directions. The wires are separatedht c i3ugn;y;4 by 0.20 m. What is the magnetic field midway between the two wires?

  Two long parallel wires cp24 dg3xr nv-lsv:a.rarry 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 wires are the contributions fro d4s-3avxrp2 :n lrvg.m the two wires the same?

  Four long parallel wires each carry 2.0 A in the same direction.stz j2 5lz,het*0e,pi They are parallel to the z-axis, and they pass through 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 w iezj2, 0tel zt5hps*,ires?

  Two long parallel wires carry currents of 5.0 A and 4 ux .41t/mlqplf-bst)g*tex8.0 A in the opposite direction. The wires are separa1txu 4ebt .f*xstl-qlp)/ mg4 ted 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 circular loop of wire of radiuzobp/xkb k6q-6b1s l)b;y cb*s 4.0 cm when a current of 2.0 A flows in /ckkzqlb6 s)b6bb ; pxy*1-obthe wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. What magtyrmwtnbb* eo;9; 8-j netic field is produced at the center of b8t*mo;wn;e 9b-jytr the solenoid when a current of 10 A flows?

  A solenoid with 500 turns i13 d uersi gpmmc(./(ls 0.10 m long and carries a current of 4.0 A. What strength of magnetic field wil.idpcul1(g(me3 sm /r l it have at its center?

  How much current must pass throfcgo xsju.6 7rmwc)+(ugh a 400 turn coil 4.0 cm long to generate a 1.0-T magnetic field at w.)s(cxo+m c6rj 7fguthe center?

  How many turns should a 10-cm long solenoid have if it isl62r11rn0gwbqhr - cz to generate a $1.5 \times 10^{-3} \; T$ magnetic field on 1.0 A of current?

  What is the magnetic moment of 5 up mvfqv,xvu m;0y,9a rectangular loop of 120 turns that carries 6.0 A if its dimensions are 4.0 c,uvf9 0,pux5vy vqm; mm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic field irgin /,n;n; tof 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane of the loop is perpendicular to the magnetic ;n;r/i ,tning field?

  A circular loop of wire of cry;yl iq+;j b(ju3urzr *r/0/oecyb v n6mx8p9oss-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 9z6pp7mb:x q w3.5 T. The loop has ab7xmp pwq6:z9 n 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 q 5a9foykh zd b0*kvji+m859s field of 0.30 T. The current in the loop is 2.0vmy+bq*si50a k kdzf99o5j h8 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,ghw.7nf vn7 mlcv ()e 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 to the ma.w vm(cg7)nevh n,7flgnetic field?

  A circular wire loop of area-sqkp1jj *;yveg ek kib-0o ,+z4,hos $0.25 \; m^{2}$ 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, (l3fr7u u:j lia single-charged particle (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 wixi sf fm8h/ (69ry*honth 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 okh fx: 6/;vfpphgs i)5f 1.0 kV and then moves into a magnetic field of 0.040 T. What is the radius of the k5xh/ p iv;sg6:ph)f fproton's resulting orbit?

  A proton is accelerated from rest through 500 V. It enters a magnetic field k5i y6nbd,cm0 xo g::rof 0.30 T oriented perpendicular to its direction of motion. Determine the radius of the pricd0: 5k nog6y,m: xbath it follows.

  A beam of electrons is accelerated through a potential -*tlp 7q;fdss;cq/ nqqi -za5 difference of 10 kV before entering a velocity selector. If the B-field of the velocity selector has a vaafz/lnditq qs ;p*;cq-7 -s q5lue of 0.010 T, what value of the E-field is required if the particles are to be undeflected?