If the north poles of two bar magnets are broughd3i0 c/44 xqkujwygi/a* yq 5 vce.f,st close to each other, the magnetx y/cuv/ 4qwa3eck4 ij 0y5d,giq.fs *s will

  If the south pole of one bar magnet is brought near the north pole of a secv+kufsva ,3h/ b7m)k1 zygvo*g2p3jx ond bar magnet, the two mfjsk3)/xv au bg,gp2h3zv *+7vyk1mo agnets will

  If a bar magnet is divided into tm6061 poikokl wo equal pieces,

  The Earth's geographic Norc01l; ub2/p chhkm q9k*gvtn7th Pole is magnetically a

  The south pole of a magnet points toward t5;kq*beyi dxb0.isf( he Earth's

  An electric current pr r;6lh-ds tl9uoduces

  Which of the followin4-c *sbrngycmt+ 4n b we8.uv0g is correct?

  A vertical wire carries a current straight downe)wjr,w*quph 65*i 7ha0xeix. To the east of this wire, the x e57eh) ijx*6aqrh, p iuww0*magnetic field points

  A horizontal wire carries a current straight toro7hlzu3 55.ina +ewn jcg;,1p6vgjx ward you. From your point of view, tzcj5x1 np 3,;+au7.ewnl6 govg 5irhjhe magnetic field caused by this current

  A current carrying loop of wire lies flat on a table top. f)izh ehrl ;*0 When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the mz*;)ih eflh0 ragnetic field caused by this current, outside the loop? The magnetic field

  A current carrying circular loop of wire lies flat on a table top. When viewed/ ifm 1;/+igms5kprgn) h hrg) from above, the current moves around+m);niirg sk h)hfp1/rg5mg / 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 magne6,9 cut ju1gswtic field is the

  1 T is equivalent toaq3wac af 304w

  The direction of the force on a current-carrying j7v yj3 wag(tn0 b8eo+wire in a magnetic field is described by which avjyowgj0e 87 bt3 +(nof the following?

  The force on a current-carrying wire in a magnetic field is tyrso/ 0 p2y*uhsbl5w. he strongest when

  The force on a current-carrying wire in a mh3e8 sbg :av7dagnetic field is equal to zero when

  A vertical wire carries a current straighrw) 9el.+u ldekd(,zlt up in a region where the magnetic field vector points due north. What is the direction of the resulting force on .deekzrd,)l+wll 9u ( this current?

  A charged particle moves and experiences no magnetic f -:dz0ddi gbnlb;i2k(7vpzofeu t:-(orce. From this we can conclude ttbezl;-7dg- ik 0ndo(:u: fb(i 2zv dphat

  A charged particle moves with a constant speedj myk mz0o 3pp;-fv95s through a region where a uniform magnetic field is present. If the magnetic field points straight upward, v9 m;-f0p5kz3jmysopthe magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constant magnetic fie jvtih.b5mw ;2ld. The magnetic force on thii52b.; twmhj vs particle

  A charged particle is injected into a uni8+u0 a:i gi6jc 4ptox0xppv(d form magnetic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring the particle's weight, the particle willv4gpp0j oc a ipx0x(+6d8u:it

  A charged particle is observed traveling in a circular path in a uniform magnet(llb0t / iq*/dwd08 nxam.bfpic field. If the particle had been traveling twice as fast, the radius of the circular path wou(0.w *8dbfl xta0 qil/bdmp n/ld be

  A particle carrying a charge of +e travels in a circularsrv3k uf2u y.d;xo jcae-23-s path in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of the circular path would havv3-efk 2-dj .y;r3uau o2xssce been

  At a particular instant, an electron mfevyqmfr2d(o hvtp2 orx )n5;g;8.(d oves eastward at speed V in a uniform magnetic field that is directed straight downward. The magnetic force that acts on f2 ( ov( )qtnvhx.5fr e8m2rg;pdo; dyit is

  An electron has an initial velocity to the south but is observed to;bagevc w* j+mlz246m curve upward as the result of a magnetic field. The direction of the magnetic field ig zvm ;aj*6e4 2bclw+ms

  An electron moving along the +x axis enters a region where there issb: -o7za uv+i a uniform magnetic field in thev+ a:i-b uo7sz +y direction. What is the direction of the magnetic force on the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced by a lon;spw) 8 dd0:f1di yh(mw t;dhfg straight current-carrying wire is

  At double the distance from a long current-carrying wire,1rs 24 +awdxc)vrx fn7 the strength of the magneticsxf2 dxa+4c 7r)1wrnv field produced by that wire decreases to

  Two long parallel wires placed side-by-sid *8jng(94:chu-ui kmim6wt jle 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 carrul9 j*iumj4nkg ti:8 (c6mw-hies 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 identica.mry wdi pn7*9hmyo t8m7v2.n x3nv+al current straight toward you. From your point of view, the magnetic field at the point exactlyd*mp..2 y7nxvrn8 y+39wvnma7t hom i between the two wires

  Two long parallel wires carry equal currentslgq4 (e e36dwq. The magnitude of the force between the wires is F. The current in each wire is now doubled. What is the mag (qe 6g43lqedwnitude of the new force between the two wires?

  A long straight wire carries current toward ldjq8 /q;g vl)x26k/6l lmjhothe east. A proton moves toward the ea/ ljjq6m6g l)hx/;k q2vldlo8st alongside and just south of the wire. What is the direction of the force on the proton?

  A wire lying in the plane of the page car): yfx4mi4w)vo/ppspries a current toward the bottom of the page. What is the dir)vi)xsp o fmy/4p :4pwection 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-side on a hor a /h5bz9do,5 ulknd3kizontal table. If the wires carry currd/3z kobu,h d595nklaent in the same direction,

  Two long parallel wires are placed zjssf(6t4u8dh h;e qoj,u;8 aside-by-side on a horizontal table. If the wires carry curfh ua 8s4 ;,(stuejo68; zdjhqrent in opposite directions,

  Consider two current-carcq+tofze.1k +rying 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 magnetic field at the center of the .cf+o+ezk 1tqlarger loop is

  Consider two current-carrying circulard,s: : ozzkmx4 loops. Both are made from one strand of wire and both carry the same current, but one has twice the rad4zm dkox :sz:,ius 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 carry p5j5a b);nb2pm*f ancing loop occurs when the angle between the loop's magnetic moment and the magc pp*fb n5 mbj;2na)5anetic field vector is

  When placed askew in a magnetic fi1qvy x ,/vel g;v7* he- 1etmmf4rtty:eld, a current carrying loop that is free to ro tx4fv *mm1te7ye1;,/rq gt:ley v- hvtate in any direction will experience a torque until its magnetic moment vector

  What fundamental fact underlies the operation of essentially all 4x ibdpr: ojh0(l1r;uelectric motors?d0lhx(:u1i ;rbrjo4 p

  A circular wire loop lies in a horizontal p-1f/+-z3gz -q ndesldro s.k,nrl9pt f07 vpe lane 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 sid3 1 /kp frpelnrl--q,tv0 osd. gs- 7fzzn+e9de 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 spectromete qke8 v 3u)p16vocjjc8r a particle of mass m and charge q is 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 uniform and oriented perpendicular to the velocity of the particle. Dopv1) 3qkjuv c 8jec86erive an expression for the mass of the particle in terms of B, q, V, and R.

  A velocity selector consisu(mqqi i22:j51 1v iyoq3hdgwts 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 toqvog5 1 ih2 q(:j2qid1 3iyumwward 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 ofama6vf18qqy,hi bg-4 -co ,hf 0.60 A is oriented parallel to a uniform magneti qo fmh8-vg,aa1i 6h-q,fcyb4c field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current)0qrbvo,u0 v99n e )zocnj4sb9he 8jd of 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 *hr.m4v8,kmy 6fs( v-auymenwire carrying 5.0 A when it is placed in a magnetic field of 0.020 T? The wire makes an auye. ky rf -4a8v6vh,(nsm*mm ngle of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long has a m8prqo3i*bsl .ass of 0.050 kg and is in a magnetic field of 0.10 T. What minimum current in the rod is needed in order for the magnetqb*.i 8olr s3pic force to cancel the weight of the rod?

  A stationary proton is izq rsjp :(os,v6a5ai(n a uniform magnetic field of 0.20 T. What is the magnitude of the magnetic force on the protaz5 qsp((,rjoi6vs a:on?

  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 speed ulp+q)-cp 6t4vahpjh 2; p*z aof $5.0 \times 10^4 \; m/s$ 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;1sgug s-itkf) 95m sc 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 wd .vzvdhm0 qzg(+f,d/ym(or7 3 rcrx0ith 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 ofts05 :soc -cdl $8.0 \times 10^6 \; m/s$ 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 spee ;p6fq ;hpq:uyd 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 6d.ca4wx4iyl:y l 9 kd:sbkk: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 d) 6u:mjcvzek pa2k:.the magnitude of the magnetic.c2: eju vz6:kpakd m) field at a distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magnetic field at the grojn3l2oz a2:zuihs 6 6 dbq65tfund, 1lz2tn2 hs6qjd6z b:6u 5ofia 30 m away?

  How much current must flow mr66u6)d caxn/,plrz 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 ;:4jr0 s qs8dxnf,bpecarrying a current of 5.0 A is the magnituds4q:s je ;d8 rnf0x,pbe of the magnetic field due to the wire equal to the strength of the Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry(i wdyrrp(zk m0 26es0*qyd* k currents of 10 A in opposite directions. They are separated by 40 cm. What is the magnetic field in the plane of the wikr*dqrsy2 em( *0z6ywpdik0( res at a point that is 20 cm from one wire and 60 cm from the other?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposn ptavv zjd wq7-1*gf16-ocd:ite directions. The wires are nv-6f d1pjzoq a- gvct*d17w:separated by 0.20 m. What is the magnetic field midway between the two wires?

  Two long parallel wires carry currents of 20 A and*oe+ g 5xeex4i(3enim/b jy,k 5.0 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 wires the samexj*,e e+ei(emy35 nxo4k ib/g ?

  Four long parallel wires each carry 2.0 Amfzm*icyu- 0,,r+ dbg6ph29 pqfg z. b in the 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 e2cm9pg fq p rb-mb 6* zgi+,fudzy,.h0xperience due to the other wires?

  Two long parallel wires carry currents of 5.0 A and 8.0 A in thk0(9)f wl,3y s xdv(b7xwh4+uromw hs e opposite direction. The wires are separated by 0.30 m. Find the magnetic force per unit length between trxfswm hou (v3dhk(b 0 w9, x74lysw+)he two wires.

  What is the magnetic field at the center of a circular loop ofgmi(*ewiiy z.wk85j b 7qq(-t wire of radius 4.0 cm when a current of 2.0 A flows in the wire emgbz q*wt w-75i.ik8(jiy( q?

  A solenoid 20 cm long is wound with 5000 turns of wire. 2 /fci tdjk6b9 What magnetic field is produced at the center of the solenoid when a curren9ijt6c fk/2 bdt of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carries a current of 4.0 A. Wha:( mz3 qqqvkk:t strength of magnetic field will it have at q kmvkqzq::3 (its center?

  How much current must pass through a 400 turn coil 4.0 cm -h,/ndm,+2t/ j. htolvmlfjtlong to generate a 1.0-T magneticf lm2 -+/ ojjt vh.mtt/hndl,, field at the center?

  How many turns should a 10-cm long solenoid have if it is i9y f8fxwd7g 4q dsow4/iu:z5to generate a $1.5 \times 10^{-3} \; T$ magnetic field on 1.0 A of current?

  What is the magnetic moment of-vj0*d4 wfep(4ru2m8t lgs wk a rectangular loop of 120 turns that carries 6.0 A if its dimensions are 4.0 c tvw prl0*s m2f-e4w(ug4kjd8 m x 8.0 cm?

  A circular loop of wire of radiuze tjr19, qj7ts 0.50 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 o7,q t9jtje rz1f the loop is perpendicular to the magnetic field?

  A circular loop of wire ofrck mg 4g(pel (e7 5)gsru8*kb 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 magnetbj,u7 +y a1(v etdfy0kic field of 3.5 T. The loopyt17bke ,fy+d ja(u0v has 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 ofe03,whsq uk92 aqot eo*)sa m+ 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane of the loop is pea u,mw aesh)t*9oq2q 3ok0 +sarallel to the magnetic field?

  A circular loop of wire of radius 0.50 m is in a uniform magnetc1 k2j5acy z2gic 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 isac2jcy 25 1kzg parallel to the magnetic field?

  A circular wire loop of area elyrahn7vhalliw(8( s7/;a 0$0.25 \; m^{2}$ 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 yr /(0bfun .xqoq1im k4b(y.f(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 velocmjs*i v1 7gib3ity $6.9 \times 10^6 \; m/s$ 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 and then moves into au+8h v q qg(:ofbl v.h0/vt,jl magnetic field of 0.04 (l,l .ogbu h/j+q:hvftv0v8q0 T. What is the radius of the proton's resulting orbit?

  A proton is accelerated from rest through 500 V. It enters a magnetic fiev i40*clfxm yd p -;3dpq5c9hk+;ub bvld of 0.30 T oriented perpendicular to its direction of motion. Determine the radius of the path i5d ppkbv 03*dvx qm-9f;yb;clh+uic 4t follows.

  A beam of electrons is accelerateqj: iekhxt+tjl4+5 ev2s/*qdd through 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 required ke5sl* :jxt i d+j24he+/qtv qif the particles are to be undeflected?