If the north poles of two bar mag8gqdufthtw 3. v1i7)znets are brought close to each other, the magnetszftug3v dt71h.w8)i q will

  If the south pole of one bar magnet is brought near the north pole.4usf/m-yfoew5aii4v p em1 i 3fbb/ : of a second bar/m /pfvysi4b: b ifo .if3eum -541wea magnet, the two magnets will

  If a bar magnet is divided into two equal pictp;-h +q+l w:t:r gbieces,

  The Earth's geographic North Pole is magnetically a+)n4zv; rhhnttbe z:2

  The south pole of a magnet points toward the Eartl y b4z/tg1;iwh's

  An electric current prok t9b h46wfk5u6ra*k uduces

  Which of the followinqhp g;co 8)zk))-2 g1daszg nmg is correct?

  A vertical wire carries a curi3rk:uw) l-2t(g-qtwej xq 8w rent straight down. To the east of this wire, the magnetic (qwt) w8t guek w-jr:2i3 -qlxfield points

  A horizontal wire carries a current straig (12sk:qp.elar0a x -/s50xh udgjm tsht toward you. From your point of view, the magnet1 :gxj52 - .k(tlus 0d0sxrhspqae/ maic field caused by this current

  A current carrying loop of wire lies flat on a table top. When viewed from9;rnx h1z2b3 admkh01 vk3omt above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic field caused by this cdm ;o1hbzx23mr3vt h n9 1akk0urrent, outside the loop? The magnetic field

  A current carrying circular loop of wire lies flat gv0s xrffy) -9on a table top. When viewed from above, the cursyf)-9 rv0xg frent 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 magnetic field cgpb yp-91zx)g3n+ v fis the

  1 T is equivalent tolmw4 xvxx z dw)/+n,n+

  The direction of the force on a current-carrying wire in a magnezvn-3s dnax 9:tic field is described by which of thdzx :s-vn9n a3e following?

  The force on a current-car0bb i-+zo ph,af 44krg*uc h4zrying wire in a magnetic field is the strongest when

  The force on a current-carrying wire in a magnetic z8 /i;yww p .sc3bbr7.0 iyvz/6utfkb field is equal to zero when

  A vertical wire carries a currennrs c2tft;sf7ogky/. 6j v* :vt straight up in a region where the magnetic field * jf7y6cs o2.gt ks; r:v/vntfvector points due north. What is the direction of the resulting force on this current?

  A charged particle moves and experiences 0akub,*pcmfh d3v 1:r+m jmmd x.z:h9no magnetic force. From this we can conclude *: dk1aup+ vf mxhrm9z :.m,mcdhbj30 that

  A charged particle moves with a constant speed throug5 /zjdh s .j-re9dk:irh a region where a uniform magnetic fiddj heji:z /-.skrr95eld is present. If the magnetic field points straight upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constant magnetljy/l9x(e qc n6v b1vtsm;jl; 3mh.9 oic field. The magnetic force on thisqle(jsm.bt91 jx /mvo 63;;n9ch vyll particle

  A charged particle is injected qa4d;b,u+h5duukut / into a uniform magnetic field such that its velocity vector is perpendicular to the magnetic field vector. 4;qua,k d+du/5 tbuhu Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in a circular path in a uniform magnet/nj w3vt8y4wgwm;7 j6,rjy f tic field. If the particle/mj6w78tj w4;y , rftw3nj vyg 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 a un,)0i0f kl1x h0xbyge;4 nob rpiform magnetic field. If instead the particle carried a charge of +2e, the radius of the circulab),xhbrfx;y1g0oek l 0n0 4pir path would have been

  At a particular instu9r7kk p7 s-vhant, an electron moves eastward at speed V in a uniform magnetic field that is directed straight downward. The magnetic force tvpkk7ur9sh -7 hat acts on it is

  An electron has an initial velocity to the south bpevbkhc;99ci1 4 0 nsmut is observed to curve upward as the result of a magnetic h0c;9s491ik cbmnvep field. The direction of the magnetic field is

  An electron moving along the +x axis enteg ) w4v48jqtt ss8qiou5iwow(-2g)v.jzq q 2hrs a region where there is a uniform magnetic field in the +y direction. What is the direction of the magne t5 gzq44ov.q2wj-)s)ts8igwov2w 8 jqhiq(utic force on the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced by a long straight current-cc 4;f6upn ifwy0;a ch,arrying wire is

  At double the distance fn,n.h4 mi 2eo2* xyyk.nx5qx*c )qdzqrom a long current-carrying wire, the strength of the magnetic field pronoxynxn hy4 q..m,*ecz 2q*5kxq2i)dduced by that wire decreases to

  Two long parallel wires placed sidekzta7la 4 hny 4 7tk,7n.m9grakkj ,/k-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 yzrn.h4 ak,kmky ka7g7n7/a4tj9k ,tl our 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 horizontal ta* u,+3w .piqouf x.kbnble carry identical current*, 3q.wuno +pbk.xiu f straight toward you. From your point of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal currents. . g 9,z(+a-5e6 w ppojxluknty1qqx.m The magnitude of the force between t.j-q az .y1gon etp +k(6mp5wl qx9,uxhe wires is F. The 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 t/,wsagvef5. foward the east. A proton moves toward the east alongside and just south of the wire. What is theg5e.vf,wsa /f direction of the force on the proton?

  A wire lying in the plane f.io*0qe sc8- sz *zxkof the page carries a current toward the bottom of the page. What is the direction of the magnetic force it produces on an electron that is moving perpendicularly towk* qs o-ze*sxc 0i8zf.ard the wire, also in the plane of the page, from your right?

  Two long parallel wires are placed side-by-side on a horizontal tai/axxseqz*s ;nwrc u*) f:: /oble. If the wires c)zwi :xfs;ec/sno* *qu: /axrarry current in the same direction,

  Two long parallel wires are placed side-by-side on a hori b7li vwitk3kl xwk1-+ nt68,udoqa *u l4:zx(zontal table. If the wires carry current in o z taq l+ti6ld 4*iukb k:3xon1l8 k,xw-v7u(wpposite directions,

  Consider two current-carrying circular loops. Both are made from one stra1bh ,xykv h3 e(6ul fbhz*bo49nd 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, the magnetic field at the cento9614xb*3b,u zhh f( e yhklvber of the larger loop is

  Consider two current-carrying circular loops. Both arg .r9 yup-a;mg)pja wo w.c*p8e 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 magnetic mo*g 8agr.po) jym 9puwacpw- ;.ment of the larger loop is

  The maximum torque on a current carrying loop occurs when the angle between t9 wazn/hvu4y fq9h 3re 2fp:p,le.i*i he loop's magnetiu.2lf 9,3vhw: 4afn r/qyzp 9ehi p*iec moment and the magnetic field vector is

  When placed askew in a magnetic f(u6x/f nq/ q-0cdeia aield, a current carrying loop that is free to rotate in any direction will experience a torqaeu6 n/cq qi 0adx(f-/ue until its magnetic moment vector

  What fundamental fact underlies the operation of essentialywjkluiif -x-m7 d9a9ff+ qb405t sx- ly all electric motors?i i-d+ mk9q x5 t9y-bf-sxwff0lj7ua4

  A circular wire loop lies 9tm9 ekm6r k(o z(2us6ag0siyin a horizontal 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 horiam99u0k6o (g6yk( ie2zmrt s szontal. Which side of the coil tends to lift off of the table because of the torque caused by the currents interaction with the magnetic field?

  In a mass spectrometer a particle of mass m and charge q is aa.rj+k(-9sdh-/-k osuqev raccelerated 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 perpendiculaarhu9v -srd a/ojske.q-( k+-r 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 charged particle passing through crossed electnh um u8 dk85n rmmio/3cb(0z5ric and magnetic fields. The forces exerted by these fields are in opposite directions, and onlmn58(ud h 5b0ro3i8mmzkcu/ ny 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 unif/t if4gf7a c3tql4pq* orm magnetic field oc3*4tq al/ 4 pfqi7fgtf
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a direction(st+8jreq6 n t 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 pl1n- tfz6ky) qs;y, ,olx -zqivaced in ato kyf-qysi;q -nl, )61,v zzx magnetic field of 0.020 T? The wire makes an angle of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long has a mass of 0.050 kg andjvb 2:ual;tb / 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 we;:ju/ltbb 2 avight of the rod?

  A stationary proton is in a uniform magnetic field of 0.20 T. csrj3+. x 96),g4wmsc.osut rtdnvn6 What is the magnitude of the magnetic force o6ugst.,ct4 +mrvdo6jn wrsnc3 s.9x)n 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 o m( ytx( w:kgbg2tq25pf $5.0 \times 10^4 \; m/s$ 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 ova.9n j, vx1hef $5.0 \times 10^7 \; m/s$ 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 3u 9jb;-kizryd1 lt:s j;m e9sdue 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 s.pwf2e5b ropy:d4x* z6vfb tj5fee* (peed 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 ofhugo63h 9d xbuky 1*,q $8.0 \times 10^6 \; m/s$ 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 x6s8vq*mm b s0$3.0 \times 10^6 \; m/s$ 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 curqa :ndhzx ,21erent of 25 A. What is the magnitude of the magneqe1ndxzh,: a2 tic field at a distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magneti ujm*s n: /fn2,ovees,c field at the ground, 10 m m,se,osje/v *u nf:2n away?

  How much current must flow fsirjtyqks: 89rc0-2xk+ okt(or $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long straight wire car yy)q)i osp/df7mknnws( c/.;rying a current of 5.0 A is the magnitude of the magnetic field due to the wire equal to the st m.s / pd fc)qyn;kniw/y)(7sorength 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. They7qf*p+g;e5h0 f(z ounv6zniy are sezv5n+p7finy*hue6 zqg 0; f(oparated 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 oq)v0mx1b txe m1d bz j(z7)hoc*vo83spposite directions. The wires are separated by 0.20 m. What is the mamo b ezb7hqzcv1)m)*j0ov t(1d x38x sgnetic field midway between the two wires?

  Two long parallel wi-j:fcy. u+ulz res carry 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-fu+zuy lj .:c wires are the contributions from the two wires the same?

  Four long parallel wires each carry 2.0 A in the same direca5akx 2bmv., k86 ffvetion. 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 xm .fbakae5fk8,v62v field does one of the wires experience due to the other wires?

  Two long parallel wires carry currents of 5.0 A anlq;u9z 2x fcg2d 8.0 A in the opposite direction. The wires are separated by 0.30 m. Find the magnetic force per unit length z2 l;q2c x9fugbetween the two wires.

  What is the magnetic field aq8jf 2ywge73v 3wir6:joei0 ht the center of a circular loop of wire of radius 4.0 cm when a current of 2.0 Argo3j8: eiefq v7yw2ij0hw3 6 flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. Wha8ca7z w*,.:lqn);y 4ym cs9i2jj yki hio2sppt magnetic field is produced at the center of the solenoid when a current of 10 A flonc c)pa 2h ;w kl8.i4:2y,7isjp jzm9y*qs yiows?

  A solenoid with 500 turns is 0.10 m long and carries a current of 4.0 A. Whatu4 gc z7a3 1oigdgxq b4fm24m0 strength of magnetic field will it have at its c g 4b4 u4a0qimxmdoz1g7gf32center?

  How much current must pass through a 400 turn coil 4.0 cm long tvklr/)s bhv q:97 3oico generate a 1.0-T magnetic3 :k7 v)o9hlv bs/qicr field at the center?

  How many turns should a 10-cm long solenoid have if it is to gene:l 3cetq, ljs1rate 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 carriwmq9 d zqst,s2dz7 obc2v,*1 zes 6.0 A if its dimensions are 4.0 cm x 8.0 czvd2 d7,ws oct,q *z1 bqs2mz9m?

  A circular loop of wire of r9qe0m4d.3o uq ma+ascb; :l kxadius 0.50 m is in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. What i:+l acxsa4b;.q3ue q mmod0 9ks the magnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sectiowfqr( f46bf08gb: i/hh/yzmr7bcyk 2 nal 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 g,/akdw+ /qxiT. The loop has an area of//xqi+g aw, dk $0.12 \; m^{2}$ 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 wireh(jw+wq+na d3 -ij)sb*(r 52uaoh pzm of radius 0.50 m is in a uniform magnetic field of 0.30 T. The current in the loop iu+wrja)ip mj (5-+*h qd b3owha sz2(ns 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 0y;*g)g/ -hqc9rw61llq-1x b7o c7deib k aeab.30 T. The current in the loop is 2.0 A. What is the magnetic torqubel6;q7wr 11b g 9ia-/ ldbog c-7h*y)ax kqcee when the plane of the loop is parallel to the magnetic field?

  A circular wire loop of yrgo m 29)j ej rc+cp2*8/yfxvarea $0.25 \; m^{2}$ 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) has amvjz m335 (g6z jb(dax 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 velzv7wxw7x+m f u:n-3 wd:0 p*tzjpfii 3ocity $6.9 \times 10^6 \; m/s$ 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 mawm - y;()oxpg u.gctp(gnetic field of 0.040 T. What is the radius of the x.gcp -p((t; muow) gyproton's resulting orbit?

  A proton is accelerated from rest thn. wyxox2g3;ytr 96p :0 tizsnrough 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to itp z.g0:rwy6; xyst2i3ot9 xn ns direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potential diff/ c:p3sggecsiz -6ai7 erence of 10 kV before entering a velocity selector. If the B-sig ge73 p/sc-zi6a: cfield 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?