If the north poles of tw nx w92qakys68o bar magnets are brought close to each other, the magnets2nsa9qk 86w yx will

  If the south pole of one bar magnet is broubtfys1m/ 4.gfdjobd 8i 89b;aght near the north pole of a second bar ma 48 bdf.bsd91g/; 8tao ymjfibgnet, the two magnets will

  If a bar magnet is divided into two eqw5 fl bz:*(ncq s dwvn*;7s9nk -kyjs8ual pieces,

  The Earth's geographic No(srjgz( jm r m)e xzb+:jyo:0/rth Pole is magnetically a

  The south pole of a magnet points t zx-wyx2/pgq* g7vlo .dv/ ldfh+ w)h:oward the Earth's

  An electric current pr zhyt3 rx4u8 ifw/cg.u5b83kzoduces

  Which of the following is combq-q5uu- s4trrect?

  A vertical wire carries a current straight down. To the east of this wire, taq )/2dxkm 6zihe magnetdq)xi2am z/6 kic field points

  A horizontal wire carries a current straight toward you. From your pointb5n)/zcup0 f5 o)ugk e of view, the magneticnu 5 /bo0ze)uf)k c5pg field caused by this current

  A current carrying loop of wire lies flat on a table top. When viewkjwbbp g*we 8c 3-+q8wed from above, the current moe j-g*38 8c wpb+bwwkqves 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 top 98zgjkc irxy:xw((k;. When viewed from above, the current moves aroundgwz (yjck:x ;(9ixk 8r 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 the--n 1mo 3tchr2h8gl2rrg wo(z

  1 T is equivalent to3urx 8 u)y ,u*:fwancx

  The direction of the force on a current-carrying wire in a magnetic fi.p l:9;3y te.( zlajjdx /mdqgeld is described by which of the fj9/.3 da.je( ypx:zdq;mtg llollowing?

  The force on a current-c)st ps+af o6wf u:+ot1arrying wire in a magnetic field is the strongest when

  The force on a current-carrying wire in a magnetic field isi1zk 9o17s4sdsx+zvp equal to zero when

  A vertical wire carries a current straight up in a region where the magneticea3oqunf x(u 5t 7)ls+ field vector points due north. What xqfest)l u(uao n735+ is the direction of the resulting force on this current?

  A charged particle moves and experie8.eme6c dx/3zb gnc 2lnces no magnetic force. From this we can conclude thx 3ecemn8d/g2bz 6.l cat

  A charged particle movesbk90x0f -krxf with a constant speed through a region where a uniform magnetic field is present. If the magnetic field points straight upward, txx0k- k 0bf9frhe magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constant magnetic field. The mag-s 6rm:nrd-n*dapmq*g4ah *t netic force onmd:rtm*4gnd-anps* -6 *hrqa this particle

  A charged particle is injected into a uniform magnetic field sfkvkk z0 .s/9euch that its velocity vector is perpen. 9k ksvfz0ek/dicular to the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed8jmb x6mc (87 pze3uhe traveling in a circular path in a uniform magnetic field. If the particle had been traveling twice as 7mezbhu(mp6c8j3 e8xfast, the radius of the circular path would be

  A particle carrying a charge of : i s9o v-v1sn (qmb0lx;mh,pp+e travels in a circular path in a uniform magnetic field. If instead the particle carried a charge of +2e, the rlpqp0 om9(-ivsm:sv b;1 hnx,adius of the circular path would have been

  At a particular instant, an electr5*it i5va- pwton moves eastward at speed V in a uniform magnetic field thvwi 5pt* -i5taat is directed straight downward. The magnetic force that acts on it is

  An electron has an initial velocity to the south but is observed to curve u/ j2ro6d,afml r ub3f(+mgs f0pward as the result of a magnetic field.(gmfmulo0/rd+ as r,62f bfj 3 The direction of the magnetic field is

  An electron moving along the +x axis enters a region where there is a unifo .svkhpk ,)-fsrm magnetic field in the +y direction. What is the dfhv kk.)ss ,p-irection of the magnetic force on the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field pro v;;yzfgqd(x *duced by a long straight current-carrying wire is

  At double the distance from a long current-carrying wire, the strength of th m3;uun8pe) oafg(2y ee magnetic field producem8uef u o)pag3ny;(e 2d by that wire decreases to

  Two long parallel wires p4l/: v7ns yoeaqr ./etlaced side-by-side on a horizontal 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 o:vs/ .la4e7y retn/q 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 pe *amcc*xi,mgu-jm91 vd*w4carry identical current straight toward you. From your point of vi-upw gj*vdmx14m9 i,e c**amcew, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal cuxoiuk07s 1g:2ef lh,bdwc3c4 rrents. The magnitude of the force between the wires is F. The current in each wx, ewbc4 1 gho7:2u dif0lksc3ire is now doubled. What is the magnitude of the new force between the two wires?

  A long straight wire cl w-mm4k1n hhn/. o z *rgsgq9d,bo):5muq 3ularries current toward the east. A proton moves toward the east alongside and just south of the wire. What buu 9w:zq1m/gmqho-)35llgrd. oshm,* knn4 is the direction of the force on the proton?

  A wire lying in the plane of the page carries a current toward k82fo*f q gbs.1 u.czez -oi9zthe bottom of the page. What is the direction of the magnetic force it produces on an electron that8ofiu-eo z1 f*2skczb 9. zgq. 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 ix f)3vfx8 cje v 6eys0nz(**kon a horizontal table. If the wires carry current in the same direct xk cz 8j) f0svfv*e36x(niey*ion,

  Two long parallel wires are placed side-by-side on a horizontal table. If th+ hjh)3z wyac.e wires +cwy.a)3 h hzjcarry current in opposite directions,

  Consider two current-carrying circular loops. Bothg81hfzk: zgo 8 are made from one strand of wire and both carry the same current, but one has twice the radius of the other. Cf8:8h1gz kz goompared 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 circud/js p gn,4admg(4s(blar 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 smaller loop, the magnetic moment ,nb(a (dp4s jg/smdg4 of the larger loop is

  The maximum torque on a current carryingj hpx6dza;0z8xm*gcn42 1 bmx loop occurs when the angle between the loop's magnetic moment and the magnetic 86nxxpg;1 2 bmh0c4jz xa dzm*field vector is

  When placed askew in a magnetic field, a current carrying loop that is f(ieh d bu:eeje .2r.cr tyf;.5ree to rotate in any directihury;t ji.edfe25:.e.b ( cre on will experience a torque until its magnetic moment vector

  What fundamental fact underlies the operation of essed2att l )tx2zpbmw+n.8 nud w v1v)p:z (e,z1mntially all electric motorsztxpmettlda(vz1:pw uv) z).+2bm21 8 ,nnwd ?

  A circular wire loop lies in a horizontal 1)+mvwfz7v/k5md tls plane 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 t v vwl1 skmt/5f+z7md)he 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 1e5n9ld-e wh qcv*p 8s lcul66through 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 ae w*d l616 p5vchnecu8l-s l9qn expression for the mass of the particle in terms of B, q, V, and R.

  A velocity selector consists of ad) lz+le f*g1m 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 ag1*+ lef)dzml 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 currentq *.1*fkql4k/ bi lefe of 0.60 A is oriented parallel to a uniform magnetic fieq bf.*/ 4k*kelq1ile fld of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of5qq*z794ucb lern,i z ht5. fbb o2qz) 10 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 carrdhif4s0 qq ej ,4gp+4/ukz)wrwci:* kying 5.0 A when it is placed in a magnetic field of 0.020 T? The wire makes4zr4wdc )ps k,:q gh kq4+*/0j fewiiu an angle of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long has a k-yqilp *t2h(mass of 0.050 kg and is in a magnetic field of 0.10 T. p- (il* qhy2tk What minimum current in the rod is needed in order for the magnetic force to cancel the weight of the rod?

  A stationary proton is in a uniec8d 2w88-ry . b9ltbpwe *ebbform magnetic field of 0.20 T. What is the magnitude o-8rtbb *clp8wd 8yw be. be92ef 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 sa1wf 5i,kzvu3 bbx5 kf /b836cxcd,m npeed 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 a9sagn +c5b)dph y2e9l speed 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 wia a /zfn4r 5nu)ap09py+xhge*th 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 sbg* v6sn ;j deojvh(w:o7n0 9apeed 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 skdonb 6g/1j/2v f1eiypeed 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 oqy+7u* gzpc/s f $3.0 \times 10^6 \; m/s$ 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 21pa .l 2athi4**5 k i7fjfmpcm5 A. What is the magnitude of the magne4lm. 2p1* 5hi7fft a jpikacm*tic field at a distance of 0.15 m from the wire?

  A high power line carryi1lpn uxtj fygrrr ,72m5 pq*-0 1kx+cfng 1000 A generates what magnetic field at the ground, 10 m ay ct1nxrj5qxp7g-fpmr, uf r1* 0lk 2+way?

  How much current must flow fo)l p: .uwp8 *3gnqmqgtr $1.0 \times 10^{-3} \; T$ 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 is9qtz v8y sq5q0 the magnitude of the magnetic field due to the wire equal to the strength of the Earth's magnetic field of abqv5t9 qq0 ysz8out $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents of 10 A in opposi74 voglvc em+h.i59so qb,o8lte 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 .vlo vm, oe+biclo78 q4 g95hswire and 60 cm from the other?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite direr:/98p7)h qj d.laqd;wd pe c1mw yx(octions. The wires are separated by 0.20 m. What is the magnetic field midway b:oq8xp qc(. d/a;drpjh ewywld79)m1etween the two wires?

  Two long parallel wires carry currents o75yljb d w16lkf 20 A and 5.0 A in opposite directions. The wires are separated by 0.2b y61dlkl5 wj70 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 the same direction. They are paj0cay d zpoj+y0 13h-xb)9kw yrallel to the z-axis, and they pass through the corners of c wk09)jyj +yybd0zp1o-3xaha 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 oy e0vb/ol60zd2sunv xm).4zsb bgp.9f 5.0 A and 8.0 A in the opposite direction. The wires are separated by 0.30 m. Find the magnetic force per unit len0s bn9y2z/d vp z 0 6vxbbg)4les.um.ogth between the two wires.

  What is the magnetic field at the center of a circular loop of uq9ar ug3 qxk:6zd-4zm(bi t+wire of radius 4.0 cm dq36+xt(:-uqi kr4zzb mua9gwhen a current of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound 8v4or27cetbxwith 5000 turns of wire. What magnetic field is produced at the center of the s 7otr2xcb8e4 volenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carries n8qzcbn 6-m(/j6zdiu a current of 4.0 A. What strength of magnetic field will it have at izd6b- j/ ni8uzmcq (6nts center?

  How much current must pass through a 400 turn coil 4.0 cm long to g0) . oikc4ve11zrlt-w.uq notenerate a 1.0-T magnetic field at the cent.q ou0reo4tt-zc .1ink)1 wvler?

  How many turns should a 10-cm lont.: wsetwkx: 3g 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 5v h ifga,z(f6turns that carries 6.0 A if its dimensions are 6,5 (gfz hfvia4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform magnet 7 pw1vauc j hw-vw1axs596,np gg.g2mic field of 0.30 T. The current in the loop ig1.h2wa mwv uj6 - v wgpnx19scp,7ag5s 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-sectionbzc)y+s9frc + al 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 m2b:ngko, 1;ukauaj(- h ds .oiagnetic field of 3.5 T. The loop ha (b,2hid j-ok a us:1guna;ok.s 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 ova;r*3vj 3tnzf 0.30 T. The current in the loop is 2.0 A. What is the magnetivr;t3j nza*v3c 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 ,:3cu/mdrko(u*rg ;w wpevi :ptb,p/magnetic field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane of th(epr 3dtpg:owrip;w:u *v k,,m/ cu/b e loop is parallel to the magnetic field?

  A circular wire loop of areqmuj/*dx( cn7 a $0.25 \; m^{2}$ 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 so fp)fc(yvuov ,u3;if4ibb30ingle-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 with velocitgdk,-b.xx i6my $6.9 \times 10^6 \; m/s$ 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 eya8+z5s0vlv potential of 1.0 kV and then moves into a magnetic field of 0.040 T. What is the radius of tlzve0v y8 +5sahe proton's resulting orbit?

  A proton is accelerated from rest through 500 V. It enters ahh 2ngx l 57f5q5yvby; magnetic field of 0.305 b5 fvghlyhq 2;nxy57 T oriented perpendicular to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potential difference of 10 kV-n6j 3vyky15l , zpgj- ye:uhj before entering a velocity selector. If the B-field of the velocity selector has a value of 0.010 T, what value36j-j1 e-zygy v,h n yuk5jlp: of the E-field is required if the particles are to be undeflected?