If the north poles of two bar magnets are brough3c,f wx6zyc6p u r6losfi3 u.3t close to each other, the magnets r33.py,f xszfu6lco6i 6u wc3 will

  If the south pole of one bar magnet is brought near the4an gv5*91v:e h,le2 jfql kdi north pole of a second bar magnet, thfvl9dva 52ekhj:ln*ie4 gq, 1e two magnets will

  If a bar magnet is dividip;o kqv ,lc)1ed into two equal pieces,

  The Earth's geographic North Pole is magnetically x6 eusn 3c9e.fj0z abxz (p/w-a

  The south pole of a magnet poo:-*uit1hk 7bvc,, n4*u lkihaoun* q ints toward the Earth's

  An electric current pro(fuehc/x/ yd d z,gee *:b*fj6duces

  Which of the following is 6duhnl-cj -y6 correct?

  A vertical wire carries a current straight down. To the eastove:ockuae4z ) ;)o/p of this wire, the magnetic fiel)/ p; e:)kz4cevou ooad points

  A horizontal wire carries a current straight toward yu xmkz ) ,1b3qkcz2/yxou. From your point of view, the magnetic fiel 13u/kz mk2)xzc, ybqxd caused by this current

  A current carrying loop of ff xbv gbw eee-1m01b (t(0s9r5w *umlwire lies flat on a table top. When viewed from above, the current moves around the loop in a counterclockwise sense. (w1mgvbfwx(f5ems0-t rb*1ue 9b0e lWhat 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 qqi; au-y;,hn7yvk6 q 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, insiqq7n ;y-i,y v6;ka huqde the loop? The magnetic field

  The SI unit of magnetic field ie+zsja3km98d (/ op vas the

  1 T is equivalent tok2mj6l o+ 2zuqqh8 zj/

  The direction of the force on a current-carrying wire in a mdz9 e4m;gb 4z8nmkvx 4agnetic field is described by whic zm 9;d4zxvn8g4 ekmb4h of the following?

  The force on a current-catc*)o4 - ocugycn,9mbj 1b- gxrrying wire in a magnetic field is the strongest when

  The force on a current-carvpt ra z-xh)j0lk o 3g7k)a) z,i00djkrying wire in a magnetic field is equal to zero when

  A vertical wire carries a current straight up in a nn6p,f )- gd r2hicwo2region where the magnetic field vector points oid-g2 hp,fn26rcn w)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 can lnn l,s zmt9k+y3c:(.hu0jog conclud+ymo3jz n9hng :s.ck0 ul,l(t e that

  A charged particle moves with a constant speed through /vk 6doe cvnmllkcs4 nnlj33: t0tv+gs,k5/2 a region where a uniform magnetic field is present. If the magnetic field points straight upward, the magne6ng lsekn+l5osvkn3:,kv 2 4jv ct tld3//mc 0tic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constant magnetic field. The magnetic fhkps/-e3+o : k4thv gborce on this partic+gvehk-:34 /h pbktso le

  A charged particle is injected 4 nz4kb kba0d s,bq3/tinto a uniform magnetic field such that its velocity ve0z ,3s adb/kkb 4tnq4bctor is perpendicular to the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling m h1ho4y3 ,p sn78o uvhk- 9g3rpm6whhin a circular path in a uniform magnetic field. If the particle had been traveling twice as fast, the radish3m193h nv,8w yoh rh-7oug46phkmp us of the circular path would be

  A particle carrying a charge of +e travels in a cirth8h0( 9s2eogn8o qqps jcx:q) a(nj- cular path in a uniform magneticp0ecnjgtj (a 2sn qx-hq)89 o(:8qosh field. If instead the particle 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 uni2 /eqf8/d8vdajqy fte(y qa2p4w;h u4form magnetic field that is directed straight downward. The magnetic force that acts on ita4f4ep8f taqy dvuq/(y 28qwd/je 2h; is

  An electron has an initial velocity to the soutx*plfvp0)s2- rn;dlbmm xm/a 0o, p9lh but is observed to curve upward as the result of a magnl0/lxl*f0 -p ,ap 9nxpmrsv;bdmm 2)oetic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a qj(fjrw5yu z ,u(kr38region where there is a uniform magnetic field in the +y direction. What is the direction of the magnetic force 8 3j j, yq(furwur5k(zon the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced by a long straight current-carrying wireep: ,dbp2 *jaau8eig( is

  At double the distance from a long current-carrx)v/;-tyww ccying wire, the strength of the magnetic field produced by that wire dec- t /xwccvy;w)reases to

  Two long parallel wires placed side-by-side on a horizontal table ca nn*:rze, ax;qrry identical size currents in opposite directions. The wire on your right carries current toward you, and the wire on you;*ea,zrn:qn xr 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 si( /qit f771x 9imldi7ej hbqm u*w3lt:de-by-side on a horizontal table carry identical current straight toward you. From your point of view, the magneticfuq/1 mx 7di(em ih*93ttlijbwlq:77 field at the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnitude* ys ,571.bs5f5cma4lmnzpeghc e) da of the force between the wires is F. The current in ee 5 . m*a,gbasp5lc)4e7dcm1ys h5zfnach wire is now doubled. What is the magnitude of the new force between the two wires?

  A long straight wire carries current toward the east. A protonx9h50ncjn :epmoty++d f.-m y moves toward the east alongside and9- tx5: +hcjynpfdn m0eym+o. just south of the wire. What is the direction of the force on the proton?

  A wire lying in the plane of the pa7mx5s(xe f6 y a j6nd;,:.kjuea psug6mex7 r-ge 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 p5: ujxuamyngs,d(6a jr. f e6 x6;mpxe-s7ek7lane of the page, from your right?

  Two long parallel wires are placed side-by-side on a horizontal table. If t 0h7a;cjxf6fj he wires carr7fcj06 hjf ax;y current in the same direction,

  Two long parallel wires are placed side-by-side on a horizontal table. If the wg- 1nes-ag pmi+h2 -. ydk+rxfires d+m+ha1e-gy- fsp2nxki -rg . carry current in opposite directions,

  Consider two current-cacikp/izt:uy(.s:w6g .h*ht 4 qko8t drrying 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 smaller loop, the matic stqg::kytz * uh.k/ 8w(6p 4.hodignetic field at the center of the larger loop is

  Consider two current-carrying cirj9lzii/j tw6 p+8k6qncular 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 moment of the smal/k6j8p+ 6i wqilt 9znjler loop, the magnetic moment of the larger loop is

  The maximum torque on a current carrying loop occur v*tpp-2zj w i q+4radwe,9q(c eb(6chs when the angle between the loop's magnetic moment and the magneti cb2 +q-eicaj,ww(* qrtv4e hpp9(zd6c field vector is

  When placed askew in a magnetic field, a current c.cy*)8rbpu a larrying loop that is free to rotate in anyu)ap.c8*ly br direction will experience a torque until its magnetic moment vector

  What fundamental fact *bq1 z1 xsjawgj/qh,( underlies the operation of essentially all electric motors?*1jh 1zqw/q,b s jxag(

  A circular wire loop lies in a horizontal pycne/4y5kd.) oydf- slane on a table and carries current in a counterclockwise direction - n54 csefy/dkyd.)oy 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 is accelerated throughcn+-zz7,yc uv 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 in terms of B, q, V,yzvu,+7c -ncz and R.

  A velocity selector consists of a charged particle passing through crossed elejjgj6 ( 4klq*ectric 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 sj46 qg j*e(lkjelector, 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 t1 funk0ecwsqn- g(04 zo a uniform magnetic f0 f qn1cu-sg 0z(n4kewield of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a direction olua/ zph 8xv;vo 248tnkr0x -sf $30^{\circ}$ 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 carryin3 cjc3-.8qj3.erfb1 h g bdgwmg 5.0 A when it is placed in a magnetic field of 0.0g1. df33-j3w.gbc bh 8crqjm e20 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 m *rp7xhxd2jfdchxacw 782 rh7c9+k o :agnetic field of 0.10 T. What minimum current in the rod is needed in order for the magnetic force to canceld7rxpkdw9a 7c jf78 h+h:o*cc2 2xxhr the weight of the rod?

  A stationary proton is in txg /o2roerp8p3sc:6 a uniform magnetic field of 0.20 T. What is the magnitude of the magnetic force6go/x8:ecp pro3 sr t2 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 speukcxq 9g31jd)b bpp/7tg 4)y yed 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 oqe xcj0wchq .plr 9iuj. .5g++f $5.0 \times 10^7 \; m/s$ 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 spea9e*)6u uliepihsj, lm9w)-x ed $4.0 \times 10^5 \; m/s$ 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 withy) f:rlakd, :g 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 with a s dan/8)yqdwt/peed 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 k56, rm sryjwvq9enwb,+;n7r 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 magnixz-/y.+k gjquu zx-y+ tude of the magnetic field at a distance of 0.15 m from th- zxyzu -k.xuq++yj/g e wire?

  A high power line carrying l9 6t wo p9e) o5hjr16enubhq01000 A generates what magnetic field at the ground, 10 m aoqw9h tl 6ue)6p1o hrnj9e5 0bway?

  How much current must flo 98yuakq)qgd 4w 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 carryi.8* vbr by1w au3mju1tng a current of 5.0 A is the magnitude of the magnetic field due to the wire eq8 y* 13t.wbmb urvja1uual to the strength of the Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currentsi6b ppv v h:jq:0bx2 4)i9jeds 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 avhij :290:djv4x6p)s b biqpe nd 60 cm from the other?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite directionsqws :gygxv*ot,w ( v./. The wires are separated by 0.20 m. What is the magnetic fiel(g v xw.qwtgy*o/:,v sd midway between the two wires?

  Two long parallel wires8or 9m* 4rzxqi carry currents of 20 A and 5.0 A in opposite directions. *z48 ixrmor9qThe 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 thvx;p7a g0rq0fgngm3v ,5gs5 ve same direction. 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 wirevvv0r qgxna ,pm;gg 50s75g 3fs?

  Two long parallel wires carry currents of 5.0 Ay,: t+nv r ix97lfkt*c and 8.0 A in the opposite direction. The wires are separated by 0.30 m. Find tnry7 c*k:ltv t,+ i9fxhe magnetic force per unit length between the two wires.

  What is the magnetic field at the center of a cir7 rdxw7u3tssgh l3;61 rvuzp( qs w)b00 :rrtucular loop of wire of radius 4.luv()3rubsq3stw1h0ux7 g 6d: p0 r ts rz7;rw0 cm when a current of 2.0 A flows in the wire?

  A solenoid 20 cm long is wd(, klmn *9b+z 0dryqysvd-m ;ound with 5000 turns of wire. What magnetic field is produced at the center of the solenoid whenqvd yk*b ; rls-n0mzd9md(,+y a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carries a cca;+mm ww/t r:urrent of 4.0 A. What strengwwr;/mta+: m cth of magnetic field will it have at its center?

  How much current must pass through a 400 turnnqm9g e5y1t f, coil 4.0 cm long to generate a 1.0-T magnetic fiele nt59qmf1g y,d at the center?

  How many turns should a 1t fok+zjy g;s,j d20yb*9b0qcyk ,sd10-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 7jr-hg7jvst0 1 df kp-moment of a rectangular loop of 120 turns that carries 6.0 A if itsvg dkt7j-hf70 -rp1js dimensions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m ig5j4- gih +yvcnmo /c+s in a uniform magnetic field of 0.30 T. The current cv m4jgc -g/h+o y+i5nin 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-sectiob;)klkhrpa fty 9 5t)q;0ke-p nal 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-. iiwe0-uforhn j0s3 a current of 2.0 A is in a magnetic field of 3.5 T. The loop hasesnjo-r.iiw0f0 3hu - 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 unifv4o v ezv(wde9y3 57aeorm magnetic field of 0.30 T. The current in the loop is 2.0 A. What is the m7o 9(vwev3 adyee4zv5 agnetic 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 unifoy. t(ra j7gl* o5s(mmprm magnetic field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane of ths7(pyromamg *j (. tl5e loop is parallel to the magnetic field?

  A circular wire loop ofta*c1qzntf5 65zue b q +hc2;q 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 (charge e) m jqkl)r;oqw1x0fn0q +o tj 5qhh:z8u4tju,+ 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 witztuxij(u)t4dbs/ ) pk /m2ju4h 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 of 1.0ot 8p7x4 pzs /gkkb.(dv,zw8t kV and then moves into a magnetic field of 0.040 T. What is the radius x8kb7 k.4(tztdspp/ zo,gw 8vof the proton's resulting orbit?

  A proton is accelerate7w*wwr:c2xlr4:i 0 p8-rr brncw ak/vd from rest through 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Determine the radius of the p:p /7r-8cxlrn w w b*:w04wraki cvrr2ath it follows.

  A beam of electrons is accelerated throuqz1 2hbx(;wytgh a potential difference of 10 kV 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 reqy1xhb2t (wzq ;uired if the particles are to be undeflected?