If the north poles of two bar magnets are brought close to e .y 5ukme,p;j svk6m1aach other, the magnetsp y s5m1uvjmk,;ka.e 6 will

  If the south pole of one bar magnet is brln )r7(wt v(0p d9g9h1 xycz85 6ue.dmeaswq kought near the north pole of a second bar ma)uceqs5917 ph d wyr mla90 edzn(wvxk.(6t 8ggnet, the two magnets will

  If a bar magnet is divided int ,klb vjk0z.2j/zrdire 4 u2(yo two equal pieces,

  The Earth's geographic North Pole is magnetice*.oz6w/z8f v8r6m p e k0y;jxhz:p hfally a

  The south pole of a magnet point*e4umhik7*ml s toward the Earth's

  An electric current pro2t*:,0 nbobas hioy* kel;gv 4duces

  Which of the followi g4oh*ni 4qj/fng is correct?

  A vertical wire carries a current str 8z kf856.cme *covk;rmw 4ioeaight down. To the east of this wire, the magnetic field poin8mcoe z 48 e6w*f5;ikc.mkor vts

  A horizontal wire carries a current straight toward you. From your poinjxv.ks;33-t n1 dlcww 29vygd t of view, the magnetic field caused bylx 3 -jyt 3swg9cv1d2d;vwk n. this current

  A current carrying loop of wire lies flat onxevc9 xc5 (6qz 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 lozqv6 x9(ex5c cop? The magnetic field

  A current carrying circular loop of wire lies flat on a table top. Whe2 hxykg*q /cl h.1,cgpn viewed from abovepcg1, h y*/kcg2 .xlqh, 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 magne rdpf. hw1s n 9fv+6g;o,uhyw9tic field is the

  1 T is equivalent top2bxp ea) je(cnd xh -4xtw-1,

  The direction of the force on a c 8qtecgv2:r p*yx q,f8urrent-carrying wire in a magnetic field is desccyep:f *tqgxr8qv,8 2ribed by which of the following?

  The force on a current-carrying wire in a magnetic field is the strongest kdfg1+ana27iwhen

  The force on a current-carrying wire in a magnetic field is equal to zer qz368714l i (-xxjb kvhpeyvoo when

  A vertical wire carries a current straight up in a revup t+86ju*9iukba n 0gion where the magnetic field vector points due nort 8upak6t vuuinbj0+9*h. What is the direction of the resulting force on this current?

  A charged particle moves and experiencesdav(6 mi5fj1, fz5)aqpea yp 3 no magnetic force. From this we can conclude tha1(yaizppmv)j3fq af, 65e5d a t

  A charged particle moves with a constant speed through a region where a.3mpcfy .l7k; wh*kgz) uv9g: 5zymo l uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting on this particle will be maximum when *lg5 ; mfhv7wkp lozycg9 my:)3z.ku.the particle moves

  A charged particle moves across a constant magnetic field. The magnetic force oc dr 6f8n-jlk7;q4kein this par k6-cnekl7firj;84d qticle

  A charged particle is injected into a uniform magnetic field su xu3-0 8a pulfh bhb+o8l1(kj4/mcfd bch that its velocity vector is perpendibf x38b /p k8(+oh4fjbamul0dlu1 - chcular to the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observju bjo;6: .2zzr+tsphp ou4m /ed traveling in a circular path in a uniform magnetic fie b6pzp:2juu+to oz4/sm.j ;hrld. If the particle had been traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e travels y )b/mahqwe12wbd6w : in a circular path in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of the circular path would have beewbeq) hm26 bwa/1dy w:n

  At a particular instant, an electron moves eastwqfd+au2ag det)rxb5 : - f,c4kard at speed V in a uniform magnetic field that is directed straight downward. The magnet4d52ru):a dqx+f , akfegtc -bic force that acts on it is

  An electron has an initial velocity to the s /s8y;cdiyo66b( ikaaouth but is observed to curve upward as the result of a magnetic field. The direction of the m(y86;iakso 6a/y dbc iagnetic field is

  An electron moving along the +x axis enters a region where y.2sbf,ks op6 there is a uniform magno pfysbk2., 6setic field in the +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 long straight current-car iog rs4tji4m:wm8fqzm, m7zn -)*yx4rying wire is

  At double the distance fro6psy0rde. sbn2 /q e)cm a long current-carrying wire, the strength of the ma2.rnq 60ssy)ecdpb / egnetic field produced by that wire decreases to

  Two long parallel wires placed sideuckd ;hf77i8+wmi; em -by-side on a horizontal table carry identical size currents in opposite directions. The wi77mh mkwc di+;uei;8 fre 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 between the two wires

  Two long parallel wires placed side-by-side on a h zh)8cdq ewf;d1)k hg(orizontal table carry identical current straight toward you. From your point of view, the magnetic field at the po)cd dhf; ( whe)zq1kg8int exactly between the two wires

  Two long parallel wires carry equal currents. The magnitude mhg+x2uy7 q-8; -kupwwjzs4q of the force between the wires is F. The current in each wire is now doubled. What is the magnitude of the new force beg -+jwx7-82qmk4zuqy;u ph wstween the two wires?

  A long straight wire carries current toward the east. r h;, .s/ipgko A proton moves toward the east alongside and just south of the wire. Whatisgkh/ ;.p,o r is the direction of the force on the proton?

  A wire lying in the plane of the page carries a current toward turmu(n1m:*,n6omcu-iup 1d1-l pu x z9/ erzahe bottom of the page. What is the direction of the magnetic forczm*np9-/u,oe ru1dp r cnl6m-z(uum aux i1:1 e 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-bu9nvitp5 oyoo)6 iv- vwig5/ 8y-side on a horizontal table. If the wires carry current in the same direv )i5 i5powoo6-gu /tvniy98vction,

  Two long parallel wires are placed side-by-side on a horizonta8 - wzqakgt:n1l table. If the wires carry current in opposite directions1:-z 8nawqgtk ,

  Consider two current-carryic -d8ku7q)uv rng 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, thedv-7uuqr )ck8 magnetic field at the center of the larger loop is

  Consider two current-carrying circular loops. Both are mad dg7u*2khh.rqk. sd .ze 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 of the .dqhd .k 2z7sr .uh*kglarger loop is

  The maximum torque on a current carrying loop occurs when the angle between the8wf vkhdp,y) : loop's magnetic moment and the magnetic fiel8 yw dhpf:),kvd vector is

  When placed askew in a magnetic field, a cubw2u-p ;xy*ji 0va1zbrrent carrying loop that is free to rotate in any dira*wj b;u2p yxz 0vib-1ection will experience a torque until its magnetic moment vector

  What fundamental fact underlies the operation of 7xdmpr9vz/uf 14 il 0bessentially all electric motors 71mzdif/px0lu b9r 4v?

  A circular wire loop lies in a horizontal plane on a table and carries curcql/ +rdo/n0.airto6rent 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 ln.d/+0rt6qo/a iroc interaction with the magnetic field?

  In a mass spectrometer a parti.eu6*f 8) yrf jreg;lpcle of mass m and charge q is accelerated through a potential difference V and allowed to enter a magnetic field B, where it is u egr f6.pley*;8 jf)rdeflected 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, and R.

  A velocity selector consists of a chargdt3a))blm)pfx mk88 ped particle passing through crossed electric and magnetic fields. b88mp) a)mdtlkf px3) 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 field point?

  A 2.0-m wire carrying a current of 0.60 A is oriented parallel to a uni tsu:evpn1+ a6form magneticnt+pseu: 1 6av field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a diqj r7z6/ay 0(uh1lmg drection 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 carrying 5.0 A when it is pbgp)jf,p 5r0vfy1ne ( laced in a magnetic field of 0.020 T? The wi ( bpvpjefg,nr105f y)re makes an angle of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.1qjun2ze:6eu m(s0n/8 t +4m7t x xffi/l jyhz0 m long has a mass of 0.050 kg and is in a magnetic field of 0.10 T. What minimum curre4tl0x+fqezsn yu(/e m18jfhnix7mu2 :z/ j t6nt in the rod is needed in order for the magnetic force to cancel the weight of the rod?

  A stationary proton is in a uniform magnpeb16mv6 hg +uetic field of 0.20 T. What is the magnitude of the +16eg6h m upbvmagnetic 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 speed o72e7 2qdh.-fzcp kc zmf $5.0 \times 10^4 \; m/s$ 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 s d4 9ibxt ec*2*vid,v*pve2xvpeed 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 spq9j,/f h b2xiueed $4.0 \times 10^5 \; m/s$ 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 ofdtlpf l:u. +yq,.k, qv $8.0 \times 10^6 \; m/s$ 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 qmo4u:d/sx0fg0fb p /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 ofi a ixl)6vt+-q $3.0 \times 10^6 \; m/s$ 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 /m/klq*x+qf 8-ecig u current of 25 A. What is the magnitude of the magnetic field at a distance ou8k c+*fqe /x giql/-mf 0.15 m from the wire?

  A high power line carrying 1000 A generates what magnetic field at the co:aa;o -egocs; .o w*ground, 10 m away?o;* . eoasc ago;-cwo:

  How much current must fln ofw : ,n36w*yo sc+rxb10xfbow 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 wireqq 3ohpc 7dgg9zlx7 7: carrying a current of 5.0 A is the magnitude of the magnetic field due to the wire equal to the strength of the Earth's magnetic field of abxld7zc p97g : qo73ghqout $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents of 10 A in opposite direc:g50xx 7c.djupioow o7az1 z:tions. They are separated by 40 cm. What is the magnetic field in the plane of the up o07.zi xjwxo7d:g5 za1o c:wires at a point that is 20 cm from one wire and 60 cm from the other?

  Two long parallel wires carry currents o p8r8h7 le 3oa58mucjlf 20 A and 5.0 A in opposite directions. The wires are separated by 0.8cu7l53j8paelho8 m r20 m. What is the magnetic field midway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in oppgd bvmdv 76ou/;zs ;/kosite directions. The wires are separated by v;g 7bv ;uzd/ 6skodm/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 the saqjevuv5/* w +ge1cfv; me 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 doe qfvjw/c1u; ve*gve+5s one of the wires experience due to the other wires?

  Two long parallel wires carry currents of 5.0 A and 8.0 A in theojty04oq/ .xq opposite direction. 4jqoq 0 /otx.yThe wires are separated by 0.30 m. Find the magnetic force per unit length between the two wires.

  What is the magnetic fiz oi7-.p3t7r:sso0/ wese vg p;.xeyleld at the center of a circular loop of wire of radius 4.0 cm when a current of 2.e slsp;.e.x 3-e vwst0r 7g/ip7 oy:oz0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. ;dhk;:oh5 t( ;wq rzft What magnetic field is produced at the center o:q ;r;hwtzofdtk(; 5 hf the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m longg;lgyln7v 2 rbfuo,/6qk xo8.ff 7zb: and carries a current of 4.0 A. What strength of magnetic field:7,n. 8xbyoqgu/kb zo6lf ;gv2rff7 l will it have at its center?

  How much current must pass through a 400 turn coil 4.0 cm long to*iirqxv0paah*l7u,f0(;yt,0 pu pou generate a 1.0-T magnetic field at theq(ufa 0,x 0u 7*u0,yhp* pvolarpi;it center?

  How many turns should a 10-cm long solenoid ol bxu-3- stn:6wq+bg 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 turns that carries 6.0 ufh)onul-/ xrr2 2.cu A if its dimensions are 4.0 cm x 8.xh2 /u)n -l.ruufocr20 cm?

  A circular loop of wire of radiu1(;d (hhws/m. bwjmje pif3 zu8l 9a:us 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 perpendicular to the magneti:w( m3wd lazjiu1jsp.(/ hhebu8m;9f c field?

  A circular loop of wire of fz bg1w ;4 a5qw5v8)fsyade2 qrn+9gfcross-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 p j3nk,j go9zf (r/n(by+.ftimagnetic field of 3.5 T. The loop h j npy,nor 3i/j.z(f(9bk t+fgas 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 /q-yi*ddxu4 h radius 0.50 m is in a uniform magnetic field of 0.30 T.d/u -*ixdy q4h The current in the loop is 2.0 A. What is the magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular loop of wirei +0)xb9t+ 0w xarztqx of radius 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 parallel )+w9r0iz b +x axqttx0to the magnetic field?

  A circular wire loop of ar 0 hhttiq. 6wph4el,(n-p v, eok+ino6ea $0.25 \; m^{2}$ 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,jo; 8nsaw0 qg( a single-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 ionnybfj5bj 6d(73 .pe; h;u fgnp with 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 potential7- f7e/tjgw fx/ghwa:/wf:dvzi hr o9 7 4cjd6 of 1.0 kV and then moves into a magnetic field of 0.040 T. What is the rad/9 ch-fdiv4jfg76jxze w/ w/w frg :o a7ht7:dius of the proton's resulting orbit?

  A proton is accelerated from rest through 500 q ix;xj v9;8 6kkf a-owyq(nub +yb6f-V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Determine the radius of the path it folvj k(-k6 +f aiqbqy8oxyw;;xu -n9f6blows.

  A beam of electrons is accelerated through a poa jmn ua0reg5/0mhld-2:i sff 8y**do tential difference of 10 kV before entering a velocity selector. If the B-field of the -fenli *aa5h jd0d: ouf0 y2* rgm/sm8velocity selector has a value of 0.010 T, what value of the E-field is required if the particles are to be undeflected?