If the north poles of two bar magnets are brought close to each other, the mag9nna-1*/hyj u 2 pko4+rusdhonets will* shadup+yu914h r-/nk o2jon

  If the south pole of one bar magnet is brought near the north pole of a ,xhnl basuj ir15*a(ss (b5/n second bar muss1(n aanb5 b *(jxl5,h ir/sagnet, the two magnets will

  If a bar magnet is divided into two equal pic(n;lmg635r ilmg4aveces,

  The Earth's geographic North Pole is magg 3ua if dow+6d939acuf+-mp vnetically a

  The south pole of a magnet points toward the Earui,r:by/ffroe z2 ;b;c9xhvp* 7 a;ha th's

  An electric current produce3;t xarfiwe8 .s

  Which of the following is correctq p3,t - 6uhn-ebz oz/vxcil +qpld:2*?

  A vertical wire carries a c3kflw(- x5jwo)+ ojz current straight down. To the east of this wire, the magoo wj+l(jxfk) 53c-wznetic field points

  A horizontal wire carries a current straig xj6-,i;rdoknye br02ht toward you. From your point of view, the magnetic field caused by this cxi2dy60j o nr,r-eb;kurrent

  A current carrying lootqx6 d;szs3g t,o+6z bp 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, outside the loop? zd6xbs;6t 3ogsq,t +zThe magnetic field

  A current carrying circular loop of wire lies flat on a table top. When vink-r(b4jyyouq+ w 6tzz1n, 7bewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic field caqb 7z1 -(kywtz nry4jn,uo+b6used by this current, inside the loop? The magnetic field

  The SI unit of magnetic field isc7m+.xt i5 * qoy+nlrg the

  1 T is equivalent torh7.9jqcvw 2 x0:wjsa

  The direction of the force on a current-carrying wire in a mag,mifqvwec -:.chair/ 5g.s. znetic field is described by which of the f .s./f:w-h mzigavri 5c.,cqeollowing?

  The force on a current-carrying wire in a magnetic field ie-3dx 9jnry;h eg3a;as the strongest when

  The force on a current-carrying wire ix,mcq)99jr:f ysod1fc u c,o( n a magnetic field is equal to zero when

  A vertical wire carries a current stra c2u)1di zvj mnb0vk,8ight up in a region where the magnetic field vector points due nz v8 bnj0 )mc2kdv,u1iorth. What is the direction of the resulting force on this current?

  A charged particle moves and experiences no magnetic force. ((joy97ax3wuv f*uudgpul35 From this we can con(w*auyx d9(pl3g ufuu v537joclude that

  A charged particle moves witqm4ymo-(*u2pk uyyyx(zrykjd0 ()j 5h a constant speed through a region where a uniform magnetic field is present. If the magnetic field po jymuqdr-m54 0 (z*)xpy2yjy( u(kykoints straight upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves av+dq * 3jl :bue pc lc:5*n)rnz6)erqfcross a constant magnetic field. The magnetic force on this partilu:cp6qje n d zenfr+)ql:b*)*5vr3 ccle

  A charged particle is injected into a uniform magnetic field such j*z x4wpt1,byfzs.gcg) + yv* that its velocity vector is perpendicular to the magnetic field vector. Ignoring the particle's j 4.vxgyz )f 1y*s*bgzc+pt, wweight, the particle will

  A charged particle is observed traveling in a circular path in a uniform / 0h dk 360oxj9brijq.ja/ :hz*p2zz.klmc aumagnetic field. If the particle had been traveling twice as fast hxzzahi k. /z b0uj3ckm jl/p doj9q:r06.*a2, the radius of the circular path would be

  A particle carrying a charge of +e travels inn,pjx/u m 7mt( a circular path in a uniform magnetic field. If instead the particle carried a charge of +2e, the radiu tx ju,/n7mm(ps of the circular path would have been

  At a particular instant, an electron moves eastward at speed V inerj *7p9p6 rats oee) k)hz)1v a uniform magnetic field that is directed sparr6zee ojk7vst)9)eh *p 1)traight downward. The magnetic force that acts on it is

  An electron has an initial vd7kxl e,c+(ok elocity to the south but is observed to curve upward as t(xd7koec,kl +he result of a magnetic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a region o:zf7 z tu0qodci60t0o/4pu rwhere there is a uniform magnetic field in the +otiz0d07oqf o/zut6: 4c 0upry 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 long straig r*qpj;nn lgl0pzh4 w-h(; ak swm998kht current-carrying wire is

  At double the distance from a long current-ca77q 3nsgk5f/efnu y p6rrying wire, the strength of the magneticfu76sn7e3/qf y np5 gk field produced by that wire decreases to

  Two long parallel wires placedjfse75 4 1xrhj 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 away from you. From your point of view, the magnetic jxhjr45f e71s field at the point exactly midway between the two wires

  Two long parallel wires placed side-by-side o hf0kuxjmnfdw2b( 1r 5wco* 1.n a horizontal table carry identical current straight toward you. From your point of view, the magnetic field at21 h. mxok frwuj*f5cwn0b 1d( the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnitude of the force betwe)5mthm;p *gh1 .dhlrc en the wires is F. The current in each wire is now doubled. Whatmc)5drh m p1*h tlg.h; is the magnitude of the new force between the two wires?

  A long straight wire carries current toward the east. A proton moves dut;w (wj/r4-tgzjv :3biyn t6b2 4n xtoward the east al;z:w uj6w4t(3b br/njtg 4t -xdyvi2nongside 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 carries a current toward the bottom of the hw:ct0qt;k3eegr 5 tx+ g1xj7 page. What is the direction of the magnetic force it produces on an electron that is moving perpendicularly toward the wir37xqw g+hr: et5c tgte0; xkj1e, also in the plane of the page, from your right?

  Two long parallel wires are placed side-by-side on a horizontal table. If o2kjf in9)k)n hvya)+ the wires carry current in the same direci o)ayv)+fk2 )n jhk9ntion,

  Two long parallel wires are placed side-by-side on a horizontal table. e-fz3zi 0r5usl/n-w 2p 1cqeb If the wires - zu31p isb2rlw/nfeq 5-ce0zcarry current in opposite directions,

  Consider two current-carrying circular loops. Bothoiy ref n3 ylu7v/(ic;5*jg/m are made from one strand of wire and both c/lfn 3;gy(r *v7ieuy c/5oi jmarry 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 larger loop is

  Consider two current-carr-eeha f56n/w: qn bld7ying 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 moment of the smaller loop, the magneti aqfew:5-d bhn/n e67lc moment of the larger loop is

  The maximum torque on a current carrying loop occurs when the a :z8blbjuv;f+4wlr 8v4m bzk:ngle between the loop's magnetic moment aj z;brv k wf:+8: l4m8zblvb4und the magnetic field vector is

  When placed askew in a magnetic field, a current carrying loop that g7zz2;sspzl /is free to rotate in any directi zl;s gpzs2z/7on will experience a torque until its magnetic moment vector

  What fundamental fact underlie9nexnln17s :a5frk kd8)i; - jjyob6 ns the operation of essentially all electric motors?ojdni skj:1 7nbxa5 6ne8nyk)lr ;9-f

  A circular wire loop lies in a horizontal pc lodg) yd:phz*gvxn- w1t .;)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 side of the coil tends to lift off of the table because of the torque )gxw d-gd*v.; ) ph1zcnty l:ocaused by the currents interaction with the magnetic field?

  In a mass spectrometer a particle of mass 3gsrfw4a 5nt 4 cu;up: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 velocityu4s45pn uarct3fw:g; of the particle. Derive an expression for the mass of the particle in terms of B, q, V, and R.

  A velocity selector consists of a charged particle passing throu87bap ui-f av1)t/v jugh crossed electric and magnetic fields. The forces exerted by t7pa-aj u1 )/vtf8iuv bhese 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 should the electric field point?

  A 2.0-m wire carrying a current of 0.4mp2(qei. jqw60 A is oriented parallel to a uniform magnetiwqe qm.p2ji(4 c field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in pjj:g :3oq-xtxn2 3 hfa 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 strair qk9t5l m76;u xh ku:t5g:etdght wire carrying 5.0 A when it is placed in a magnetic field of 0.020 T? The wire makeekutd;65 t9rh7:5lg mk :xtuqs an angle of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long has a mass of 0.0g 0ko/tr/w jp,50 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 o p/t/okr0w g,jf the rod?

  A stationary proton is in a uniform magnetigl2:ya 2 8b vzqzx+w7sc field of 0.20 T. What is the magnitude of the magnetic force on the prot2+sglyz 2z 7vwxa:8qb 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 spee+infzz (ny11 -rnlq p5d 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 spxu2o(y+z m rx.eed 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 with srjjwmm.9 + nl6xk5sezlf,91ypeed $4.0 \times 10^5 \; m/s$ 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 aohx 31*kpanrw5 xc::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 vq 4vq.h0 5oy e-/arfrspeed 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 or k ,baqjg/5c agh y79y4i4;faf $3.0 \times 10^6 \; m/s$ 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 o-h 1.cu( kcldc1r 1vvjf 25 A. What is the magnitude of the magnetic field at ad1j.1ch-1vlvkc (u c r distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magnetic field at the groun52r1*6jti .r ,gq ov-k ,c y+mdh,ymrhnjc/i rd, 10 m awayr n.25rmj-cdtrvo/myc ,i 6g*hj,rhki1y + q,?

  How much current must fl* :,-sj:tmqw ph;e. a y8wici0rwjlf -ow 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 str knd ++wl89kwiaight wire carrying a current of 5.0 A is the magnitude of the mag8lkwn+w+ d9 kinetic 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 currents of 10 A in opposite direpx i d6htbe,5vv4;abp 7 ;a2klctions. They are separatebe,4pvp la 6xbh;2t i;a 5k7vdd by 40 cm. What 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 currents of 20 A and 5.0 A in oppositzmzwtx 3 kx6487/rtdamtcn24e directions. The wires are separated by 0.20 m. What is the magnetic field midway between the two wt46dzr cm837k4atwmx/n tz 2xires?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite directii,;z eji ibe a4)z1t8fons. The wires are separated by 0.20 m. At what point between the two wires are the contriba,)eijz4tii8 z 1f e;butions from the two wires the same?

  Four long parallel wires each zv*yqb9hwc39ktxw5r97 qs6 w carry 2.0 A 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 9wq6c 7 3t* 5wzqxkryw99vsbh of the wires experience due to the other wires?

  Two long parallel wires carry currents of 5.0 A and 8.0 A in the opposite6y8w vk0: a :aloygb,g direction. The wires are separated by 0.30 m. Find the magnetic force per unit :: y ,ba6gav08klwoyg length between the two wires.

  What is the magnetic fie gh-:5zo wax 8/k,ygeuld at the center of a circular loop of wire of radius 4.0 cm when a current of 2.0 A flows in the wire a/ ygzewko:5x8gh u-,?

  A solenoid 20 cm long is wound with 5000 v39tsl5n cvk 3turns of wire. What magnetic field is produced at the center of the solenoid when a current of 10 A flslc3v3t 95kn vows?

  A solenoid with 500 turns is 0.10 m long and carries a current of 4.0 A. 2e+ ok5 ud7jke4,fsg zWhat strength of magnetic field will it have at i5k,j4 df guezk +eo27sts center?

  How much current must:, a+f cow-jlq pass through a 400 turn coil 4.0 cm long to generate a 1.0-T mwl :c-j a+,ofqagnetic field at the center?

  How many turns should a 10-cm long solenoid have if it is to generateu0:c.0lr -pasra*f lhs5 :izi 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 that carriex9x5b eh rp7:ed+g v(/tf *zbzs 6.0 A if its dimensixz+*9ehrve/bp b(zd:gt57xfons are 4.0 cm x 8.0 cm?

  A circular loop of wire of raq +96tn n-1csob+rvyd dius 0.50 m is in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. What n b+vctys qr+o9-nd 61is the magnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wirehve1d2.r1xr zt(n0oi 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 fi(vety *4pzxs +eld of 3.5 T. The loop hasp (4*ystzve x+ 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 unifor42 w)p8js exzam magnetic field of 0.30 T. The current in the loop is 2.x4)pa sjw28ze0 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 ismg 9i nxtc+ote*33sh3 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 of the loop is parallel to the 3 ngt x3meshic 3+to9*magnetic field?

  A circular wire loop of ivslg:(k :: i (s4gmxearea $0.25 \; m^{2}$ 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) hajp9; n/ o)l ch6w(ylytmm/9k0mi l6lxs 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 wiyy xi3o74wsmk- j) 1vlth 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 bfr 8pu9pv+2n-)3mb rmf7tz fa potential of 1.0 kV and then moves into a magnetic field of 0.040 T. Whaf+fpt237pmf-r nm r v)8b9buzt is the radius of the proton's resulting orbit?

  A proton is accelerated from rest through 500 V. It enters a magne )xik0ck v8727s9jokib9piei nzg m52tic field of 0.30 T oriented perpendicular to its direction of motion. Determine the radius of the path it ei )209oikvi77s82nbzk9kcim g xpj5 follows.

  A beam of electrons is accelerated through a potential difference of 10 kVc g3 ibx n2)cush):z(r before entering a velo bzcc(xi s)2 3nuhrg):city selector. If the B-field of the velocity selector has a value of 0.010 T, what value of the E-field is required if the particles are to be undeflected?