If the north poles of two bar magnets arswfl293jm r5d;/dm wn b5sv4be brought close to each other, the magnetm/ 5 29vs3jsr5mfldw;bnbwd 4s will

  If the south pole ofwxuz 1wz wfmrf j62)/u ak92t5.wymt2 one bar magnet is brought near the north pole of a second bar magnet, the twj1 zyx2ma5u m2/)wt6r.zwfk 9ut w2fw o magnets will

  If a bar magnet is divided into two equal piec9 1s jrjgx1elm9 h7+stes,

  The Earth's geographic No*dg-zsohd n u6-x1lx d 9dkf/81hsdn :rth Pole is magnetically a

  The south pole of a magnet points so2)o4at 3jxuhk j./g toward the Earth's

  An electric current 4bfm k7ddy)tky k,71lproduces

  Which of the followivjg,p)dr(n ,j ng is correct?

  A vertical wire carries a current straight down. To the east of this wire, the ijfc )yajzx2 3w. 5cx7pyl ,4hmagneticc7 fcw 5.jp aj2xh)z3,yyx il4 field points

  A horizontal wire carries a currej* bp,3ub7ovh7 pc-kvnt straight toward you. From your point of view, the magnu o-3j7*bpck v7hvbp,etic field caused by this current

  A current carrying loop of wire lies flat on a table top.u 7h +wmsr2j9zj7 ;cqkcle s,2 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 loop? Tr l2 h+wm2zq,ucesk79;j 7cj she magnetic field

  A current carrying circular loop of wire lies n( tk(ppb6te6flat 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, itbe6pt(p nk (6nside the loop? The magnetic field

  The SI unit of magnetip8afk /s9 .gdixp cb/;c field is the

  1 T is equivalent toq 8lws1 io t5ta;qxf-9

  The direction of the force on a current-carrying wire in a magnetic field is ,jvkm2zg;j8 .)f iidldescribed by which of thejigjv ;ifkm l2,)d.z 8 following?

  The force on a current-carrying wire in a magnetic fielgwodvf1wk+; pm,.fz d+x /to7 d is the strongest when

  The force on a current-carrying wire in a magnetic field is equal to zero wmh3;uyce *o cwa9 m*:c g.ad*chen

  A vertical wire carrieshvheh )87btkl g *cs4zsa7 m22 a current straight up in a region where the magnetic field vector points due north. What is the direction of the resulting 2m sa7t8 c4*)gskhz2bleh7vh force on this current?

  A charged particle moves and experiences no magnetic force. From this8r i*6:up q uqbvnv55n) jhvj. we can conclude thq p *qv:irvb)hn.n5 5u 8jv6juat

  A charged particle moves with a cd 02wc3og68w tfeblo) onstant speed through a region where a uniform magnetic field is present. If the magnetic df6cwwo8)3bg0 e2 otlfield 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 magneticgh.o vl) qrt-87zdn1r force on thi7v nl)h td-r8rqg1oz.s particle

  A charged particle is injected into a uniform mjt eojy);f3uc2q( f* eagnetic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring the partjoj ftf*3u y2e ;)ec(qicle's weight, the particle will

  A charged particle is observed travelct6tr-75 pax0 ljj*iiing in a circular path in a uniform magnetic field. If the particleaciji r*lx-5j 6t70 tp had been traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e travels hrf 5;+3- juzd/f ipp ((qmssd3svj(kin a circular path in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of the circular path woulfvi/u-3;( j3mh(ssprfk zqddsp5(j +d have been

  At a particular instant, an electra*ez2xxy1s2wsm jp 18s ,nrj8 on moves eastward at speed V in a uniform magnetic field that is directed st 8 1s xsr1myx p8jj2wa*ensz,2raight downward. The magnetic force that acts on it is

  An electron has an initial velocity to the sol b4ggty,hl23uth but is observed to curve upward as the result of a magnetib ,hl24l3gtygc field. The direction of the magnetic field is

  An electron moving along o3in2 y ,d aad/xwdb*(the +x axis enters a region where there is a uniform magnetic field in the +y direction. What is the direction of the max *nd a(b,w/o32dyid agnetic force on the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced by a long straight current-carrying wire isf+9o)rh9 efdl(7eiy (s )kgv l

  At double the distance from a long current-carrying wire, thp-x ;;.*em3f e jfqmkse strength of the magnetic xm;*- j.e; qsep3mffk field produced by that wire decreases to

  Two long parallel wires placed side-by-side on a horizontal tablro(7p 5cre msy iz5i76e carry identical size currents in opposite diroe(c ysi7r575p z6mir ections. 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 between the two wires

  Two long parallel wire-kojrvdu6j8 t ofp0 5-s placed side-by-side on a horizontal table carry identical current straight towardtv-u -8jkj d 0o6orf5p you. From your point of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnitu3kuy 5z.lhdv*pu (rx1 de of the force between the wires is F. The current in each wir y35u1hv(.*xl dr zpuke is now doubled. What is the magnitude of the new force between the two wires?

  A long straight wire carries curren d8v( wiiwr+) ieu/g9nt toward the east. A proton moves toward the east alongside and just south of)i(iw+i/gr edw9u8 nv the wire. What is the direction of the force on the proton?

  A wire lying in the plane of the page carries a cur;il4r,l.jtgo d( tl+jei0j h7d*bpb5 rent toward the bottom of the page. What is the direction of the magnetic force it produces on an electrojgd(ip4+t b 0l lj57l*thibj .e;do,r n that is moving perpendicularly toward the wire, also in the plane of the page, from your right?

  Two long parallel wires are placop. 2ij:0 cbjjv4,oe t.lnii ,ed side-by-side on a horizontal table. If the wires carry current in the same directionc,v0jootj4 nii lb,ij:2e.p.,

  Two long parallel wires are placed side-by-side on a horizontg w.gprv lgr. q0(ec5/al table. If the wires carry current in opposite dwr. vr0 5c/ lgggpq.(eirections,

  Consider two current-carrying circular loops. Both are made from onej am7.-hsya- e strand of h7asa-.jm -eywire 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 center of the larger loop is

  Consider two current-carrying circular loops. Both arecer,69 gyye: f made from one strand of wire and both car yecy,9:e6rgfry 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 larger loop is

  The maximum torque on a current carryi17n,x+ qqvl)m+cp w dpng loop occurs when the angle between the loop's magnetic moment and the px1q,pcl v+7+wd m)qnmagnetic field vector is

  When placed askew in a magnetic field, a current carrying loolkk b*sp-i 6e8p that is free to rotate in any direction will experiens kpbe* -k68lice a torque until its magnetic moment vector

  What fundamental fact underli ehgn)gt6f7(yxq, 1ri *u rv6u.b it(ges the operation of essentially all electric motorse u(irtv.u 1fgtb,qg6)irnx6gy*h( 7 ?

  A circular wire loop lies in a horizontal plane on a table and carries currenrgy .jw02m) e4 gso/got-t,ibvk4. bqt in a counterclockwise direction when ov.bbgt yrqo2m wjet ) i4s/-k.4,gg0 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 the magnetic field?

  In a mass spectrometer a parti2abtgn c p/y5 3cpx72zcle of mass m and charge q is accelerated through a potential difference V and allowed to enter a magnetic field B, where it is defle5a7/t c32gnpyb2x cpz cted 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 charged poq8c07vmja8q/rxy3; arx 0 n6q)i x kly0 qbz5article passing through crossed electric and magnetic fields. qyk0 30c0 z m;xqa/86j)r5l ryq8vi7nao bqxx 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 pa)/xu fblq/ zbhmtuy 8e*a2g+5rallel to a uniform magnetic field 85hu xb+e/ g*qy)mblf/ zu2taof
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a directiong6smukz rk7o3 )cpp9k +cr ;*l 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 me3r *fgnv0 9hqds 1if+jkw:v kx7vb)o .ter on a straight wire carrying 5.0 A when it is placed in a magnetic field of 0)inofv9fw:dk0* j+ kx s vh.rb17qvg 3.020 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 and is in a magnetic ftp6xg ; s1l6ojd *1 tw1o-wzlfield of 0.10 T. What minimum current in the rod is needed in order for the magnetic force too1;6 ld1 -lf1 jx* 6gtowzwtsp cancel the weight of the rod?

  A stationary proton is in a uniform magnetic field of 0.20 T. What is the majomf7j ,42t sygnitude offjs o,t7j2y m4 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 a speed of85k74v a,ry3tcvtc;* sfd4h)ixikbm $5.0 \times 10^4 \; m/s$ 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 z-u w:gz-j,hnipq cml (-*,s4kx9 rcoa speed 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 speed umhd ,i22 *ioxrm07tb $4.0 \times 10^5 \; m/s$ 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 spe b+cd0h ib*g djy:5ez8ed 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 zfo 9f5+qp i,uof $8.0 \times 10^6 \; m/s$ 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,v itw66)f ww $3.0 \times 10^6 \; m/s$ 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,q)4ob+p hrq8rntt )1dp1gxj the magnitude of the magnetic field at a distance )pnxd+g 1pq4qh1rt ,r jbt)8oof 0.15 m from the wire?

  A high power line carrying 1000 A generates what magnetic field at 9qp o0e ev/zs7o0tzd)the ground, 10 m away?)o7zp9qze/e0 0v tsod

  How much current must f0 3qrxdg(;0ee vyw/lu nu8r+glow 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 5.0 A is c5kzaux;w b+) vgyb09 the magnitude of the magnetic field due to the wire equal to the strengwz0+yb) xg cbu9kav5;th 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 dire.si0 lx9(b7ies,zwpb ctions. They are separated by 40 cm. What is the magnetic field in the plane of the wibe7 i.(bw9,szx0l psires 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.j+ w(7a onl)9aui*ju w0 A in opposite directions. The ju7ali )9j* u(oww an+wires are separated by 0.20 m. What is the magnetic field midway between the two wires?

  Two long parallel wif yvqve132;6t ns +nyi uq7e)eres 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 ysv7qytien e fvq61)n ;3e+2u two wires are the contributions from the two wires the same?

  Four long parallel wires each carry 2.0 A b5 s oh: uhq etidn9/esx51x-bh5og24in 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 the x-y plane. What magnetic field does one of the wires en x1 e5esxq5ts95 ohod4-:2hbb huig/ xperience due to the other wires?

  Two long parallel wires carry cw2t(csvwk4 irgx17 v hoe;5)eurrents of 5.0 A and 8.0 A in the opposite direction. The wires are separatgir14h xe;v2kew(tw) cs7 o5ved 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 circular loop of wire of s.6c1p(-/ skjen mioq radius 4.0 cm when a current of 2.0 A flowss( jpq 6o.-ismk/ 1cne in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. b/yl ih:8xk)z What magnetic field is produced at the center of the solenoid when a current of 10 A flow/ik8:yh)bxz ls?

  A solenoid with 500 turns is 0qq . vxi wcs ,ywjsn+0fas-.67.10 m long and carries a current of 4.0 A. What strength of magneticxscs 0w q,q6snyaw7 .j- i+vf. field will it have at its center?

  How much current must pj)pkej 8r p3z:ezrse5 y1 *ah5ass through a 400 turn coil 4.0 cm long to generate a 1.0-T magnetic j 31p8)ah5rrzjzk p5 :*yeesefield at the center?

  How many turns should a 10-cm long solmue/4 yg (sjidfeym p0x2;x058d. n vgenoid 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 ca px2*4rzfo)c)9dkh d xrries 6.0 A if its dimensions apodx))*fck2dr9 4xhzre 4.0 cm x 8.0 cm?

  A circular loop of wirnc byme,k8 ozb5msycb,s; ( *,e 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 perpendicular to the magnetic field?mn,k8 *s,;sm bczye(,cbb y o5

  A circular loop of wire of cross-sectional a2vl,riujh 79uua o1- ; qm9xoarea $0.12 \; m^{2}$ 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 magnetg6ro *gm :r/cxic field of 3.5 T. The loop has a*r6ogm g rxc/:n 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 unn40 k npxy*yp*:(+kfo 4hqjvh iform magnetic field of 0.30 ojx* *h4yk( pypnnv :+04hkqfT. 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 wire of radv+q gr38bd8cz53k u -en 0stdjius 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 s5kud0-8qt+vn38czg e brjd 3magnetic field?

  A circular wire loop of arevep-i-h3qq ( aa $0.25 \; m^{2}$ 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 a speed of so k-s79v jtb6$1.0 \times 10^6 \; m/s$ 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 veloci*jgsc /qgw/r2 nqu/o3 ty $6.9 \times 10^6 \; m/s$ 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 m qs/m6oa9v5d 3vi5swrzd 7/r sagnetic field of 0.040 T. What5wi75svm r6sq 9ovsazdd/r 3/ is the radius of the proton's resulting orbit?

  A proton is accelerated from rest through 500 V. It enteren 1li1g -xntb l o,6rs;r(tq)s a magnetic field of 0.30 T orientedrit1 (e-, b;61lgs)nnortlxq perpendicular to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potential difu 9dv9s mw9t8wdi8pp/0o gpv4ference of 10 kV before entering a velocity selector. If the B-field of the velocity selector has a value of 0.010 T, what value of the E-fieidwvpv0twp48/opg9 99ds8 u mld is required if the particles are to be undeflected?