If the north poles of two bar magnets ar9f+2ubffcc0 7p f ccf(e brought close to each other, the magnets wif2fb +c(ufp 7cf9fcc0 ll

  If the south pole of one bau7)b5qwsa(q;wtyduo; w b0e /r magnet is brought near the north pole of a second bar magnet, the two mabaw w( 0uqus7b)t/ ;5q ;owydegnets will

  If a bar magnet is divided into two equal pieces9cd4aoi,eyg7 x8wx t /,

  The Earth's geographifuxvpde xc ,)s;6fjstrb,o* od 5l0 3,c North Pole is magnetically a

  The south pole of a magnet points towarmd3a(4n5z xb 69dy uo54,m0usw wb bxed the Earth's

  An electric current producesn jf:y) q1*:rcp,i cir

  Which of the followins zcx92fqjk/;2e, nv8pgi (q fg is correct?

  A vertical wire carries a current straight down. To the eas.8rb mt gs(5cyt of this wire, the magnetic fiectsr m.(y5 8gbld points

  A horizontal wire carries a currenuyaciwe70ekcs*n2n qd:,9iiq m c1:b,c ( u f+t straight toward you. From your point of view, 1c(y9c0 ce7:niec 2nsb*i:qda, qwu+fim k,uthe magnetic field caused by this current

  A current carrying loop of wire lies flat on a table top. When viewed frit2eu h d xvzdx1w1(+;om above, the current moves around the loop in a counterclockwise sense. What is the direev d;x2+z1 x thud(i1wction 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. W +u/m:wfy pdv. kq9 dw0gi54bfhen viewed from abop 9m /4byiqg fdd f+:5wk.wvu0ve, 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 magnetic field

  The SI unit of magnetic57 1 9g ewpml/ tnzbzbt(:e5ky field is the

  1 T is equivalent toge j4lc0o/ t)f

  The direction of the f9kfp5a4i; bn;8e: bckulz-sb o :pe0jorce on a current-carrying wire in a magnetic field is described by which of the bbkc; p 0:sbiknfu p5a8e49-z;oelj :following?

  The force on a current-carrying wire inm ata5pd qoz1//n:i7v0uyn ,v a magnetic field is the strongest when

  The force on a current-carrying wire in a magnetic field is equal to zefq;a :p2dtxe /ro when

  A vertical wire carries a current straight la51w (:idkyckv itc t,m/8z4up in a region where the magnetic field vector points due north. What is the direct1m/w z5, yl:8tica(idkvktc4ion of the resulting force on this current?

  A charged particle moves and experiences no magnetic force. Fro+ flhi von07/sm this we can concn0+ hvfils/o7lude that

  A charged particle moves with a constant speed through a regioetp7 g,8al zo2rtzm :6n where a uniform magnetic field is present. If the magnetic field pozo8lg6z tta2r :m,ep 7ints straight upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constant 7 h,dyitk fn *v.8sa5smagnetic field. The magnetic force on this *k sit7f85nasv.d ,hy particle

  A charged particle is injected into a uniform magnet3 j)p:xce pf,xic field such that its velocity vector is perpendicular to the magnetic field vector. pejxf,)p : x3cIgnoring the particle's weight, the particle will

  A charged particle is observed traveling in a circulsog7 lgagdq9:q a7x y*3l rs,*f2k*a yar path in a uniform magnetic field. If the particle had been traveling twice a2sk7l*r qd3 sqy,l79xg:af *oy* gaags fast, the radius of the circular path would be

  A particle carrying a charge of +e travels in a circular path in a uniform magne)ieb6ps 3cxc* pyd, /jl6b q:etic field. l) y3beqp:,*c6piscx6 j/ bed 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 uniformznr047 qpk i+k magnetic field k pnrk4+0zi7q that is directed straight downward. The magnetic force that acts on it is

  An electron has an initial velocity to zkzxe 7/xo6fy kl8n/6 the south but is observed to curve upward as t8z6/76 efy lkkz/xo nxhe result of a magnetic field. The direction of the magnetic field is

  An electron moving along the +x axis entersa69 ia dw)onc8rbxc,ck70j rto -f ,0u a region where there is a uniform magnetic field in the +y direction. What is the direction of the magnetic force on the electron? (+x to right, +y up, and +z outw uc, b 8rnt0)oxjakr9of7ic6 -0dc, a of the page.)

  The magnetic field produced by a y .gfg, tmu: om82+.pzez6lnund j* (j.4if eplong straight current-carrying wire is

  At double the distanceod bdj z4so)26 from a long current-carrying wire, the strength of the magnetic field produced by that wire decreased)bsdz62 j4o os to

  Two long parallel wires placed sy5nt 4ax)l,ba ide-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 field at the point exactly midway bay,4)l5xn tb aetween the two wires

  Two long parallel wires placed side-by-side on a horizontal table carryhp p0q(kknc7w( (p./ 6kpyr )yf*mm bw identical current straight toward you. From your pc6k.qbp(wk pr*0 wy ypmhk7mp(f(n )/oint of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry/nd/atze42 e*dl29 xcubwmt3 equal currents. The magnitude of the force between the wires is F. The current in each wire is now doubled. What is the magnitude of the new force between t t2d32e//*n uzdew4ct9 ma lxbhe two wires?

  A long straight wire cae,deoy *ht4d6dy;i ytx 5: i)jrries current toward the east. A proton moves toward the east alongside and just south of the wire. Wha;dth6oy:yj)5eidyt di4 x* ,e t is the direction of the force on the proton?

  A wire lying in the plane of the page carries a current tow sz/.l /smsmgqmt1d,1o9 /- v.nfuihaard the bottom of the page. What is the direction of the magnetic force it produces on an electron that is mo/hf,t m ma qz1v-.s.9s g/dmlous/n 1iving perpendicularly toward the wire, also in the plane of the page, from your right?

  Two long parallel wiresh8v2vxabs9hv5jwlx6 ) 7 ksl2p x/v/x are placed side-by-side on a horizontal table. If the wir 5hwv//8)vb s7pv2l9xxhj xvxk 6asl2es carry current in the same direction,

  Two long parallel wires are placed sidzffhxaf:olbv7uf5+ w)9v z 1)e-by-side on a horizontal table. If the wires carry current in op)vvz:zfo)flua5wh b+19 fx7f posite directions,

  Consider two current-carrying circuu g(0c7 he-srq*pwq,m8de0nrlar 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 th-r qruw*g0np08(e,h7 d s eqmce center of the smaller loop, the magnetic field at the center of the larger loop is

  Consider two current-carrying circular loops. Bot ry 1lz+ hr8joe- zdq2l:9,coih 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 ro eqc2z1 -y ,rl8jzhi+9: ldosmaller loop, the magnetic moment of the larger loop is

  The maximum torque on a curj+ .dr cw(aj ogrw/3g)rent carrying loop occurs when the angle between the loop's magnetic moment and the magnetic field rwod+rc )a 3g/jwjg(.vector is

  When placed askew in a maf+j4a3x+x5u+mo,ccx vb/ 9p (o dvbcggnetic field, a current carrying loop that is free to rotate in any direction will experience a torque until its cmb+pg3 /ujcx5+4ooa +9v,vfx(bcx d magnetic moment vector

  What fundamental fact underlies th u m8 . ;id;u3seu*dzb af0e55gypl cm-ty)jb6e operation of essentially all electric motors?uig5y ma- )l mbf;e ;*u58tbje 6ydcd.p3z0su

  A circular wire loop lies in a horizontal plans2 gyc9m7c,93s3on 4 uu drwfhe 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 caused by the currents interaction with tyd3mwou gfh3 ,9927ns ucs 4rche magnetic field?

  In a mass spectrometer a particle of mq:9b) ;rwfpty ass 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 particlt ;y9qbfr)pw: e. Derive an expression for the mass of the particle in terms of B, q, V, and R.

  A velocity selector consists of a chargecfv.fneqwlfa.c-d ,69 k2h3l d 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 should the electric fi6kv qffa c .ldeh3fln -w2,9c.eld point?

  A 2.0-m wire carrying a current of 0.60 A is oriented parall7d5, bo uc1/ex59e*fvn s vcomel to a uniform magnetic field offvoovbsc 551ecd/ ne97 ,xmu*
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current oq0a5((tdm,ys*f* 9r /q c r 5jxdstvnof 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 s 9: ryc3a0qg6mgj oezqi1)+hk traight wire carrying 5.0 A when it is placed in a magnetic field of 0.020 T? The wire makes an angle ogkri3jm9:ay10+)h6 zgocq eqf $27^{\circ}$ 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 magnetic field oo3 d21xfpmzoa5i9,e wpzz6.h f 0.10 T. What minimum current in the rod is needed in order for the magnetic force to canceldo.zeopz9 ihx56pfwzm a 3 12, the weight of the rod?

  A stationary proton is in a uniform magnetic field of 0.20 T.2u w3 bszrq/ v.vxk*e2 What is the magnitude ozq. r bx*we kv2/3s2vuf 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 p1,a rfjrcrntp .:xwdh10+kn)2 6rbya speed 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 spee/j o ep)2kd5 :hfv+gpbd 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 northkufsxd02f :8 rb:8vfu 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 a spee8d(,aj+ bqtjtwzp0o:k o*p y *d 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 speed of 9 io0(j6l;0isn wrjutua bp, .$8.0 \times 10^6 \; m/s$ 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 k x5 n kbfb18d7ac.tr3of $3.0 \times 10^6 \; m/s$ 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 carrib9( +-m(o*fs s0md1nrhz ibykes a current of 25 A. What is the magnitude of the magnetic field at a distance of 0.15 m *9fh+n (b(rmb0mos d-s 1ziykfrom the wire?

  A high power line ca9kgmc0 um fdwj,:9y, wrrying 1000 A generates what magnetic field at the ground, 10 m awayjm w:,y,9 k0gmu9wcf d?

  How much current must o0w.4saeipm( 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 5.03l (lnqr30g 5vjs.ctr A is the magnitude of the magnetic field due to the wsgclj r0 .l53n(q3tvrire 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 oppositej3 vxvgw);o k bhgh57z)6 lpm8 directions. They are sepa738;o z5m )hk lp)jbgx6gwvhvrated 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 cab,) ayv m;0kbbrry currents of 20 A and 5.0 A in opposite directions. The wires are separated by 0 ak0bv),by ;mb.20 m. What is the magnetic field midway between the two wires?

  Two long parallel wires carry currents of 20 A anw2c-j lqfbhmn- rg.zrbw64 +j fle),5d 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 lb,5mg 4rlnzfb 6f-we. )r2qc jj-w +hwires the same?

  Four long parallel wires each catzjm5hh / 6;4yzgmua(rry 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 z6hz; yg/5a 4umj(htm the x-y plane. What magnetic field does one of the wires experience due to the other wires?

  Two long parallel wires carry currents of 5.0 :li), t)pyhqk c9w i-xA and 8.0 A in the opposite direction. The wires are separated by 0.30 m. Find the magnetic force per unit length iwy,xc)-lit9) pk:hq between the two wires.

  What is the magnetic field at the centh3wma0 qhsgu x/2u 38ter of a circular loop of wire of radius 4.0 cm when a current of2/xm80tgwaus 3 3uq hh 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. What magnetic field is f/m0s9ciahrdli) ( 5 sproduced at the centei0li(r sadsc /f 95hm)r of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 09 ikunt)ee,6r .10 m long and carries a current of 4.0 A. What strength of magneticu ,r et)9i6nek field will it have at its center?

  How much current must pass through a 400 turn coil 1uh :8zorrjp 54.0 cm long to generate a 1.0-T magnetic field at the centehor8u5 pj1rz :r?

  How many turns should a 10-cm long solenoid have if it is to generate a (w e86hgynekxeg;+9 p $1.5 \times 10^{-3} \; T$ magnetic field on 1.0 A of current?

  What is the magnetic moment of a rectangular loop of 120 turns that carri 2fxhudgrj / zlu6djwp4 4-o(jc82kk:es 6.0 A if f/4:hj8u r4(gx -j wcld 6uo2d2pkzjkits dimensions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radihh:cbt;)+ ;ljo qy6jmus 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 of the loop is perpendicut 6:jqm; h+yl )cbhjo;lar to the magnetic field?

  A circular loop of wire of cross-sectional arp8c 6 n0gf.h uppl)u2pa/ zqbyd8,w7iea $0.12 \; m^{2}$ 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 fiel;7yk 4hj ti*vg 3jhk)jd of 3.5 T. Thtjj7ikhjhv;43 gyk*) e loop 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 f3ft 3 yowj+c:onb2,ak ield of 0.30 T. The current in the loop is o:bcjf2k 3wto+ya,n3 2.0 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 field of 0.yt pxmrajy*o6lg*7m5f8; 6* (bml 2o0nxgpyc30 T. The current in t2my*pxg o6a**l yp 0 7nrmbx ;65ojfm(8ygltche loop is 2.0 A. What is the magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop of q qpoaw200rr/ 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 n)z 1csb9pjs7juan ,, (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 c5m2bcxp syy -oh1 srgp6taw61v7a 9,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;9t(j 6ph,q qbscpeg2 of 1.0 kV and then moves into a magnetic field of 0.040te pjqb (2cg ;s,hq6p9 T. What is the radius of the proton's resulting orbit?

  A proton is accelerated from rest through 500 V. It enters a magnetinipvt(k 02knc.o4+jo c field of 0.30 T oriented perpendicult+jkoc0 4n oi2.n(vkpar to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potenti9y0hjcw5 ni 8dal difference of 10 kV before entering a velocity selector. If the B-field of the velocity selector 9 5w h0ncj8iydhas a value of 0.010 T, what value of the E-field is required if the particles are to be undeflected?