If the north poles of two bar magnets are brought close(6a)h7t +m f. udkrsixx- cugw 3w8(ca to each other, the magnets willaiwx8.tsa6(+fh-wg 3)um r(uc7 dx kc

  If the south pole of one bar magnet is brought near the north c,j;u- hgzx3f pole of a second bar magnet, the fcz hg3u;jx-, two magnets will

  If a bar magnet is divided into two equw1 lzp;vahbpq6 u;*; u:(d//1+f nvoqha kgaral pieces,

  The Earth's geographic North Pole is magnt sf+*g2bk 2ho4b7 ffnetically a

  The south pole of a magnet points toward the Ea9k7mi ar;oov(c z*i q:0rcn x2rth's

  An electric current p) ack8kke,qn(ed+* pd*4 lvm rroduces

  Which of the following is corvpax,z6 hc, 31tb /yrty8dc:mrect?

  A vertical wire carries a current strai/6dt4awgptexz s.jal94 who92:u s-.bay8 xv ght down. To the east of this wire, the magnetixtje s-:.9 b.d2zsh64y9 avua aogl/wpwx84 tc field points

  A horizontal wire carries a jz/bj0;(evkoh2vw-d9g( lcoteh3e3 current straight toward you. From your point of view, the magnetic field 33e9(wlvodte k0z-ehhcg 2; v (jb/jocaused by this current

  A current carrying loop of wire lies flat on a table top. When viewk(ihlg+8e 0eg,laa 2ced from above, the current moves around the loop in a counterclockwise sense. What is the direction of,8ae 0hlckieg (+a2g l 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 tob t*z 3vt b47gqb)zlo5p. When viewed from above, the current moves around tb43)bz g7 vz5 oq*ttlbhe 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 magneticy8vmu +7(xavv field is the

  1 T is equivalent toaf/ kp4(k.pziw te s73 ,1ttaz

  The direction of the force on a current-carrying wire 3u:p mxu 7k-edin a magnetic field is described byp7u x:m-edu 3k which of the following?

  The force on a current-carrying wire in a magnetic0 7a*qe*u6mzap-ez bn field is the strongest when

  The force on a current-carrying wire in a magnetwc -h7j8 p0ezmic field is equal to zero when

  A vertical wire carries a current straight up in z /ds;gg.l,h.rkpjnz3 h tm+ (ek-s, ba region where the magnetic field vector points due north. What is the direction of the resulting forceg. (debhkn3;.- /pjmgr+sl, k zhs,zt on this current?

  A charged particle moves and experiences no magnetic force. 7-apf qy+yca( From this we can conclude tpy q+-cy afa(7hat

  A charged particle moves with a constant speed through a region where a .s f2lvx jur1)r:g+1,u j5bgq wys1nwuniform magnetic field is present. If the magnetic fieldrw s1q1 vu l)bruyfw:g j+,5ngs1j x.2 points straight upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constant magnetic field. The magnetic forcta/(wtnst5key np(d)d5 .s:e1 n.ke ke on thi.t :ne5) . nkt ndpa(dses/(t5wkyke1s particle

  A charged particle is injectyy ryzjy/kkfd,a / 4cgbe++p7z fq1 05ed into a uniform magnetic field such that its velocity vector is perpendicular to+fap4j+gzr ,by1kf7 yd y//q c5ykez 0 the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is obserqam vc) 5up,99x6ngk nved traveling in a circular path in a uniform magnetic fnuc6p95,qm v a9kxng )ield. 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 in a circular path in b. 5w c8osvcysp7t+ba j /s.-ra uniform magnetic fiel .5s/a-o+.rc swpbsv jtyc8b7d. 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 8ap /8wpxhc:fspeed V in a uniform magneti acp 8w8p:xh/fc field that is directed straight downward. The magnetic force that acts on it is

  An electron has an initial velocity to the south but is observed to curve upwars, +kgn0mnpw)o7o s(wdow)k7mgss,o0p+ nn( w as the result of a magnetic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a region where there istvj3 n:aoe z:k 89ryq; a uniform magnetic field in the +y direction. What is the direction of the magnetic force on8oqveytr;n 3:zj ka :9 the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field pro8r3kd z 6t+ uhb)ni6xa.eu ei6/xm/ku duced by a long straight current-carrying wire is

  At double the distance from a long current-carrying wire, the strength of thenv q,4 o ;np5b0fdyz4lv9+dpp magnetic field produced by that wire decvypq4fovb, 4d p0dznl5p9 ;+nreases to

  Two long parallel wires placed side-by-gzy 2xlb70 4uqbxkoqi735l6mside on a horizontal table carry identical size currents in opposite directions. The wire on your7lbuz0moqxi3q x65 y2kl4bg7 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 wi qbls8cghba 1 94djh-72c0lvares placed side-by-side on a horizontal table carry identical current straight toward you. From youra1qav4h08-l7c9hg l2 bdbcsj point of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnitude of the force 6o7b; kf mzxwov6*ge 1.jd:dobetween the wires is F. oz.b*x7;vo:6k gd meo fw1 jd6The current in each wire is now doubled. What is the magnitude of the new force between the two wires?

  A long straight wire carries current towa6y: wxqxgasz- ;8gjo:rd the east. A proton moves toward the east alongside and just south of the wire. What is txwya xo: qg8-s g;j6z:he direction of the force on the proton?

  A wire lying in the plane of the page carriemrnmyjv s*v5l /x :10cs a current toward the bottom of the page. What is the direction of the magnetic force it produces on an electron that is ms/m:r v jy0 x1v5n*mcloving 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 table2 9re 41zb5mau;kae v5hn9 we openzlh5:bc,/. If the wires carry current in the same direcpea/ 5:2n mue 59bne 4rkl5ze 9zva;1 bwh,cohtion,

  Two long parallel wires are placed side-by-side q:x/vtksbu( :on a horizontal table. If the wires carry current in opposite directu :: sx(/vtqbkions,

  Consider two current-carrying circular loops. Bothn 3 sd;9c6vtuh are made from one strand of wire and both carry the same current, but one has twice the radius of the other. Compared s96h;3uvtcn d 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-carrying 69enf5 j1 jf5ft7a eaucircular loops. Both are made from one strand of wire and both carry the same current, but one haa 1na u 9f67tffjee55js twice the radius 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 carrying loop occurs when the angz7qu(awn je 5gk 7h;4 j4. 5gsoh,uvcsle between the loop's magnetic moment and tj guog 74 qu4.;(kv5e5czh,w jas7shnhe magnetic field vector is

  When placed askew in a magnetic field, a current carryi2v r.2 wej0hrgng loop that is free to rotate in any direction will experience a torque untiw2rrjg v he0.2l its magnetic moment vector

  What fundamental fact underlies the operation 7uc)i52 cgxvn of essentially all electric motors 2v n)cgxcui57?

  A circular wire loop lies in a horizo4sokjmo( 7a q6ntal plane 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 ca7o6osk4m(jq urrents interaction with the magnetic field?

  In a mass spectrometer gccf:sx+nr5if+.8: ccheep9a 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. Derive an expression for the mass of the pap cnrch:.fc++ ie9gxfs : e85crticle in terms of B, q, V, and R.

  A velocity selector consists of a 2sa k,qc3a da+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 toward the east, and the magnetic kadqcs,a23 +a 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 pb uvctv1 4ihddn /+3j5arallel to a uniform magnetic field4hb/3 jdn5uvi1dv + tc of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 Ad*kckv1 6l ,xa 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 card(gmia, * 1ufblx,ef 6rying 5.0 A when it is placed in a magnetic field of 0.020 T? The wire makes an ang e,(m, fx1 6digbfu*alle 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 is in a magnd98r v;1 b+tbxpe46 n68 rhzxudfod0oetic field of 0.10 T. What minimum current in the rod is ned6b tv8of9106rhr8nd o x+e 4udx;zpbeded in order for the magnetic force to cancel the weight of the rod?

  A stationary proton is in,-g0mb* zs8td2jyzq t yy 9)cc a uniform magnetic field of 0.20 T. What is the magnitude of the magneticyc9*2tysq ,czztbg myj8d0) - 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.c cf z.,pi9pxi8dpx: 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 s1w*eg8p.g ti xpeed 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 duofpyu5 v4p 7ps4 qzh,9e north 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 speed ofe1 vx;ql8 og 4d4uvxf0 $8.0 \times 10^6 \; m/s$ 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 of4k qh+bq;wf *n $8.0 \times 10^6 \; m/s$ 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 of y,wonik-(/ qrt1 yx8b$3.0 \times 10^6 \; m/s$ 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 7c07u-phag iris the magnitude of thacu7-0gprh 7i e magnetic field at a distance of 0.15 m from the wire?

  A high power line carrying 16 9e0xp;wkzpg- vip:c 000 A generates what magnetic field at the ground, 1-9v;zp pgx0pe k:i6c w0 m away?

  How much current must flow for)dpn2ei1qw g(q; c6na $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long straight wire carrying a current of 5.0 A is the m)o*:sw4etqre agnitude of t4:o *str)wqe ehe 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 currents of 10 A in opposite directions. They ar3;:ra9q h vud1t 9kgtoe separated 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 othertt1;9u hqv3g:ka dor 9?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite direction ,a zlus):1zv4 eyty9fs. The wires are separated by 0.20 m. What is the magnetic field mi y1vz:zylua s,)e49ftdway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in ob les,8bh59ws2ruyz2d)6r s c3 xh,bg pposite directions. The wires are separated by 0.20 m. At what point between the two wires are the contributions62gs uy r bse bxhsz)br,h3l, 59d2w8c from the two wires the same?

  Four long parallel wires each;zm.w / ) x8/ifyx s9+b8kij lpnp/gvv 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 siden / y./li/fvikb jpmgs8 xw;zx)9+8vp 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 currjj7q5dx ;s5hj-khb+ dents of 5.0 A and 8.0 A in the opposite direction. The wires are xj- bh75;d q5dshj+ jkseparated by 0.30 m. Find the magnetic force per unit length between the two wires.

  What is the magnetic field at the center of a ciry /ubneo2og) nh(/y1scular loop of wire of radius 4.0 cm when a current of 2.0 A n ouoe2 n ygb1/s()y/hflows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. What magnetic field e)t24*6l7/b xob. jjsww cy8y5jcnhkis produced at the center of the solenoid when l* by8j4j25w cse 7o6jw)h.x ncbkty/ a current of 10 A flows?

  A solenoid with 500 *. 9yv:j g7yoheu6kvsturns is 0.10 m long and carries a current of 4.0 A. What strength of magnetic fie*6 9v.j kuh y:vgys7oeld will it have at its center?

  How much current must pass through a 400 turn coil 4.0 cm long to generate a 1nvi8h)*5y sjy .0-T magnetic field at the centerj ys y5v*i)h8n?

  How many turns should a 10-cm long ss*f3jx uvg2sazj,mbs;8 2(baolenoid 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 g .3/ k:gbnl 68xsbzsgloop of 120 turns that carries 6.0 A if its dimensions ggb.6 3g8xz ln:/sb skare 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a iu58boj qif .9em)t:c uniform magnetic field of 0.30 T. The current oi cteub5.8):9jmi fqin the loop is 2.0 A. What is the magnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire ofr8);98 irnzxu8otk y3mqab n(ss.n+n 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 field of 3.5 T. c m.qgdz(r0)k The loop hkdrgm z(c).q0as 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 of 0(jmvdcmknm h 86;w:- x.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane of the loop is parallem -6: kh8(mxjnvwcmd ;l to the magnetic field?

  A circular loop of wiref)5j5u*emcu ,u cwyp2 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 to tmucupfwu *5,2jcye5)he magnetic field?

  A circular wire loop of i 5c0lmg /2e2jz, wb/c8brkr/rcnuf + 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 singlecb.b4 (r4j 20jscsl sq- sh 68p;lgnie-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 ion with .ncxc;r7lt9 02odf jvvelocity $6.9 \times 10^6 \; m/s$ 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 a magnz9 hi7obu.+ 3.ya( -v+gx/ ysifhu;za erzg)oetic field of 0.040 T. W ( ;zgo)e-xgizh fvua.ys b9a+/o.37rz+ yiuhhat is the radius of the proton's resulting orbit?

  A proton is accelerated from rest through 500 V. It enters a magnetic field ocv xsn5 e48vpr(34eebf 0.30 T oriented perpendicular x v4prec8s n5(ev43eb to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potentisw7)v k utofw-a a71w+al difference of 10 kV before o7w -1 tuakw7w v)a+sfentering 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 if the particles are to be undeflected?