If the north poles of two barqdn o-pv1 u)bq8)wy w( magnets are brought close to each other, the magnets wil(b1)) vywuwd n-8qp oql

  If the south pole of one bar magnet is brought near the north p3+k x05x3;fyyyl0ct d ogh5b 8pnoj5y ole of a second bar magnet, the two magnets wi0bn 5lj;ckyo8y5y3xf o5yhp30dgt x +ll

  If a bar magnet is divided into two equa,r uo7og;m0q+2eg2naf,)fml: q/ fovzor4 s wl pieces,

  The Earth's geographic North Pole is magnetica)sj l5g 8 uau7qmtsnbhs7te6-hp e87)lly a

  The south pole of a magnet points toward the Earth*gb n-kwow5/ 7nk md9j's

  An electric current provg(7 fpgze mtp*)0 cd5ypp5q/8ni0 idduces

  Which of the following i z(ksrlfw1lx ;o11i k. vr(9zhn2wy6 zs correct?

  A vertical wire carries a current straight down. To q.* m rt4oj ,nf r0c.al2dgu/j.sz-ovthe east of this wire, the magnetic f d 0rj.s4noq.*m-ru,.aoct z2/ vg jlfield points

  A horizontal wire carries a current straight toward you. Fj5:dejlnts3, 3v7wh .ug,yo from your point of view, the magnetic field caused by this current,hl7ye3j :n.3s fvdw5, jtgou

  A current carrying loop of wire lies flat+o ox qv b wo3o8ptvh;--hx6(.sog vm- 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 lbwsx o6hoqo+8go;p m- o.-v-tv3 x(vhoop? The magnetic field

  A current carrying c/k )ux )ybr9gbircular loop of wire lies flat on a table top. When viewed from above, the current moves around the loop in a counterclockwi)xub)b / yrg9kse 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 twx(b-96ap .f j+s5vob /vdhw6 /osgrxhe

  1 T is equivalent tosml/zfj8tl8 *

  The direction of the force on a current-carrying wire in a magneti e80,nrqq (fotu cki;5c field is described by which of the ft ofqk er85i(c;0u,nqollowing?

  The force on a current-carrying wire in a magnetic field is thioq):g+ st,e ee strongest when

  The force on a current-c00n, a:m* crmp.r nzyparrying wire in a magnetic field is equal to zero when

  A vertical wire carries a current straight up in a reg4on6u 271vi ojowo m(oion where the magnetic field vector points due north. What is the direction of the resulting force on this curre ov4 nwuo2(7ooijom16 nt?

  A charged particle moves and experiences no magnetic force. From tvdd 49cccho(msxu 9d4n.qy9/ his we can connxm44 .cq vd uc99d/9cys (ohdclude that

  A charged particle moves with a qo (i25g1s -zgyxxd4 jq5rgt:constant speed through a region where a uniform magnetic field is present. If the maitxg o5r14jqys dx2 (:qg-gz5gnetic field points straight upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves acrohnxd*v6jk .h (ss a constant magnetic field. The magnetic force on this particn*x d6h.jkv h(le

  A charged particle is injecapnx::4v; kq ited into a uniform magnetic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring the p qaxk::; v4inparticle's weight, the particle will

  A charged particle is observed traveling in a circular path in a6kzxp-5pqxa/v0n 2 xc uniform magnetic field. xxc/ 26x z-pv0pq5 aknIf the particle had been traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of 4h r k2a4sdpd0ze02bf+e travels in a circular path in a uniform magnetic field. If a0f 0 r2z shd4dbp42keinstead 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 Vto : 0m8 0lc :2rz8wgymfcqbr0b-2x we in a uniform magnetic field that is directed straight downward. The magnetic force tf 8mbewgc rbc8 -y zr0:m0l wo:qxt202hat acts on it is

  An electron has an initial veloce/; nbm nf,3zi /fns1uity to the south but is observed to curve upward as the result of a magnetic field. The direction of the ma3/mnb;,en/ niu f1 fszgnetic field is

  An electron moving along the +x axis enters a regionf9i(fcmg+xp6 tm(u- 4 n vf4nn where there is a uniform magnetic field in the +y direction. What is the direction of the magnetic force on the ei mfnv4(c6u(f pt 4x9-+nmnf glectron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced by a long straigh bbxbk 1ha,(/vt current-carrying wire is

  At double the distance from a long c0ut7f0v 1hcsq urrent-carrying wire, the strength of the magnetic field proq7s uc1tvhf 00duced by that wire decreases to

  Two long parallel wires placed side-by-side on gsxp 5g-9 lejwl :u1fnd ts:,s9 lw6g1up: )fea horizontal table carry identical size currents in opposite directions. The wire on your right carries current w1gsxp-s) :ul9npfulse56l :,w e:1 dgfj 9gt 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 si0lmo0q6q z o*rde-by-side on a horizontal table carry identical current straight toward you. From your point of view, the magnetic field at the point o6 qr*mzqo0l0exactly between the two wires

  Two long parallel wira3kgr sd wywsl (t2)rx99h p26es carry equal currents. The magnitude of the force between the wires is F. The current in e2srsprgdw(92x9 y ah )k63t wlach wire is now doubled. What is the magnitude of the new force between the two wires?

  A long straight wire carries current to -1 yn0gj s ,7ci,;uy,frk qcxtzek;*tward the east. A proton moves toward the east alongside ay gtc;0xzruyqe*t i j;k f1k,,7,nc- snd 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 bottou7*fpe:xw5ba8 k dk1tu2qs1a8y+dq pm of the page*p 8q 58 yxaduk27:1dsqtbpuwea1 +fk. What is the direction 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 horizontal tq/rbu :* awkq-(;uvmyftj( q8able. If the wires carry curm *8uqtbvy f-/qwj: qkr(u ;a(rent in the same direction,

  Two long parallel wir7mx ux;v0) r(ujuy7xp es are placed side-by-side on a horizontal table. If the wires carry current i0mpu) xxj7 7uu;(vr yxn opposite directions,

  Consider two current-carrying circular loop fi*ako2rg(. js. 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 2 ioka.(rf g*jthe center of the smaller loop, the magnetic field at the center of the larger loop is

  Consider two current-carrying circular loops. Both are made from oneca(ww +t 07/zbk2wd6f7 pzkiy strand of wire and both carry the same current, but one has twice the radius of the other. Compared w 7id/6b(awc0kt+ w 7k py2zzfto the magnetic moment of the smaller loop, the magnetic moment of the larger loop is

  The maximum torque on a current ma:0x vd 1rqh9dzp.4tcarrying loop occurs when the angle between the loop'szph9v04at d: xqd .1mr magnetic moment and the magnetic field vector is

  When placed askew in a magnetic field, a curen6h ohjx0p-)rent carrying loop that is free to rotate in any direction will experience a torque u-pen)hh o 60jxntil its magnetic moment vector

  What fundamental fact underlies the operation of ef;4sqjwi k1w4ssentially all electric motors?4qkisfw41w ;j

  A circular wire loop lies in a horizontal plane on a table and carries curre0brzuv-1bc .,m ,e xignt 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 curre1 mb gurz,0e,.b-ix cvnts interaction with the magnetic field?

  In a mass spectrometer a particle of mass m and charge q is accelerated thr+s;tx 9hy0 jiyough 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 orientes+yhj xi0 ty;9d 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 cr2w5jbq:oovn;/ , jj0sry u3 kharged 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 dir0j2: ow/bqso5; j,3ykv unrrjection should the electric field point?

  A 2.0-m wire carrying a current of 0.60 A is orie9g,mjng6 fm 1 x fwvb9s.f7x1ab kb:2unted parallel to a uniform magn kb1,bmfn9 xfxu1sa :9bj g62.mf7vg wetic field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a cur sei 71w73qx fm5vd7berent 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 wire carrying 5.0 A when it is placed * sz((x adeo5d o5abp-in a magnetic field of 0.020 T? The wire makes an a-a zs*5ep(5x bo(odd angle of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long has a mass of 0.050 kg and izxc.b-shvb 8hw 3*b+vs in a magnetic field of 0.10 T. What minimum curhb3+ zxv -cvsw8.hbb* rent in the rod is needed in order for the magnetic force to cancel the weight of the rod?

  A stationary proton is i(4pz l2*rg1nojep w /wn a uniform magnetic field of 0.20 T. What is the magnitude of the magnetic force on the proton/rwo*wjz p (4l2en1 pg?

  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 speic drw7ex3h-7mcizfz98dfug, 8; ex 2ed 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 speed ormiag )r2ax2 :f $5.0 \times 10^7 \; m/s$ 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 sp sm6, m;na*d hkedh6z6eed $4.0 \times 10^5 \; m/s$ 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 of )q pip 7/(zbvl$8.0 \times 10^6 \; m/s$ 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 u:tq28 gi2/ u dchsuvp:n : 3oyz-rc3i$8.0 \times 10^6 \; m/s$ 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.)2oijf+xx5bnj1 fv;wixc 5 f 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 the magnitude of tumi6 (xeke0n44 c6a qb7z2xp0cap n5yhe magnetic fie pxpi0z 0ca7462 nxcnaeq b(6y euk4m5ld at a distance of 0.15 m from the wire?

  A high power line carrying 1000 A genes 2 -,q7edcow/ukxji5 rates what magnetic field at the ground, 10 2qe/5k i- wjocd7,u xsm away?

  How much current must flo8w9.d/b lr azptm,s jp0hmo+1w 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 carryingj63,ycu1quxkf8 mir 6 a current of 5.0 A is the magnitude of the magnetic field due to the wire equal to the strength of the Efi6y81cm,q63u ur k xjarth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents of 10 A in opposite directions.r-szuy2 rpq6parg2 f4y(m(x. They are separated by 40 cm. What is the magnetic fiea f(s62u4 2x.p( g pyrmz-qryrld 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 opposi 9ozyp-j:-m-m6)8+ciqbvw 6eaozp3 ralj qj 6te directions. The wires are separated by 0.20 m. l8+z pwpeoa-qi6 morvbm- j6-9qjyc)6z3 a j:What is the magnetic field midway between the two wires?

  Two long parallel wires canb(i*xru3(me rry currents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. At what point between the two wires are the contributi*n( 3(mirexbuons from the two wires the same?

  Four long parallel ws c9*cq5tj3 .bqq3 ooet e:*etires each carry 2.0 A in the same direction. They are parallel to the z-axis, and they pass through the corners of a square ej 3e.* 5ttqoqqc9bto: ce*s3of 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 of 5.0 A and 8.0 A h9i5 )4kslut eljke r7jm923qin the opposite direction. The wires are separated by 0.30 m. Find the magnetic for)53ljske79i9t h qu4k2ej ml rce per unit length between the two wires.

  What is the magnetic field at the center of a circular loop of wire of radz / zm1)lgv.khius 4.0 cm when a current of 2.0 A flows zm.g1v/hz lk)in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. What magnetic fieldvdwmf dr -28 -rlj5*vr is produced at the center j-v28r*rw vlmdf5r-dof the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carries a current of 073goyb8nawy4 gc wq/4.0 A. What strength of magnet07g3bgnw4yaoy qw/8c ic field will it have at its center?

  How much current must pass thro xh-oen2jl9cqj 9mr(1ugh a 400 turn coil 4.0 cm long to generate a 1.0j9h-nejlmor 9 12 q(xc-T magnetic field at the center?

  How many turns should a 1q0fzb.;m79dfhr ) psf0-cm long 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 turns that carries 6.-rnvx 3zck9 mh,5bl(5ra2waf0 A if its dimensions ar,m -( 5xvb5h2ranl 3k a9rczwfe 4.0 cm x 8.0 cm?

  A circular loop of wire of radius ;o +(k+k(/ewdstvjow9 b ge d)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 egd(o+(swwk ;bo) tj/vked 9+when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sef d-qq8bnivi)3 0s mzgms( 9-pctional 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 kn/ qfxy4*7 x 1mj7sjufield of 3.5 T. The loop has an/ xm *q1x4k7j n7ufsjy 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 radiex09eo6f*wkk3t p, snus 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 to the ma eof *n69tk,xk0p esw3gnetic field?

  A circular loop of wire of radius 0.50 m is in a unifox7de4pi ref)467,ls.hw xt ph rm 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 ,e6)hh47x4ip.we dt7l frsxpmagnetic field?

  A circular wire loop of al)/q+svod 8 khrea $0.25 \; m^{2}$ 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 38b dg/2q ibso9xbju: 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 mp czakx n u ,+nx//-.dlcq;0uvelocity $6.9 \times 10^6 \; m/s$ 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 ang1 shx hd*)uq+d then moves into a magnetic field of 0.040 T. What is the radius of the proton's resulting)ds h1x*qhug+ orbit?

  A proton is accelerated from rest through 500 V. It enters a magneticgs-;q+t(xsfzeoizk z ;* q5 v7 field of 0.30 T oriented perpendicular to its direction of motion. Dete zeg q x7o+izk*s;ft;s-qzv 5(rmine the radius of the path it follows.

  A beam of electrons is accelerated through a potential differenx ejlk/(jt ;hi/s7 7twr vwz:(ce of 10 kV before entering a velocity selekvh w:z(7 i s7ljt/jxt(w /er;ctor. 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?