If the north poles of two kh7.p/*o bo mlbar magnets are brought close to each other, the magnets l.p/hkboo m*7 will

  If the south pole of one bar magnet is brought near the north pole of ayv,1am) 6( amkbhx;au second bar magnet, (kyham)a6xua;v,m 1 bthe two magnets will

  If a bar magnet is divid8yod k w.n6x 81tc3xszed into two equal pieces,

  The Earth's geographic North Pole is magopxo ;oe4rqy 3 ek;7+enetically a

  The south pole of a magnet po1 (l i:q+-qde/rhc tflints toward the Earth's

  An electric current khsms*- j s4q,produces

  Which of the following is cor tas k-vmg7j p04;0rrfrect?

  A vertical wire carries a current straight down. To the east/cse zk a.lx5c0-q a-m of this wire, the magnetic fie- q-lxa zc e5a/.0csmkld points

  A horizontal wire carri/37h 0ps l9jju mvh3hues a current straight toward you. From your point of view, the magnetic fiel93sm/pu3h 0hjhuv l7 jd caused by this current

  A current carrying loop of wire lies flat on a table top. When view/dcze-p8y4q aed 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? The mc4/a8p- qyed zagnetic field

  A current carrying circular lomn*wq*( l-n ujf,rnh9c+p ,vfop of wire lies flat on a table top. When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direnr wp 9muj*fcnh,*, ql-fv(+nction of the magnetic field caused by this current, inside the loop? The magnetic field

  The SI unit of magnetic field uz:r- .;hmhp41 avpykis the

  1 T is equivalent to; 8hrx:zb5vkd/ f:nfq

  The direction of the force on a current-carrying wire in a magnetic fid5x5n q2xl/ xfeld is described by which of the fqx5n xx5fd l2/ollowing?

  The force on a current-carrying wire in a magnetic field is thcyd;1. ii)elo;vpt 5lg l8uo6e strongest when

  The force on a current-carrying wire in a magnetic zdrahk*9dbit37) ownj :*;2amh)z rhfield is equal to zero when

  A vertical wire carries a current straight upmbd;wl4-oavwf2t g/ f:wn.5o in a region where the magnetic field vector points due north. What is the w matlwb /o:g.ovf fn5;- w24ddirection of the resulting force on this current?

  A charged particle mov8bi+i0h8pm)d( p 4 : mrcswjfnmhq j6:es and experiences no magnetic force. From this we can concm6pdj8w)m4jn0 qp ::h+i bcs 8 mr(ifhlude that

  A charged particle moves with a constant speed through a region w uhx: t 2vl5smc*l7a*ohere a uniform magnetic field is present. If the magnetic fiel7 utm o2:vx l5*shac*ld 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 fg2p l 6kpei5i-orce on this partic6il kpei 5-g2ple

  A charged particle is injected into a unifoc em7/vaq2, *tc2l ivrrm magnetic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring the particle's vvm,c el a/qrt2*ic7 2weight, the particle will

  A charged particle is observed traveling inf: l:swr3 sj 3(xf zlp td1+*ujdo(6fm a circular path in a uniform magnetic field. If the particle had been traveling twice as fast, the radius of the circular patf*ojrjlff+: : l3s tz1 3(p6(mwdxsduh would be

  A particle carrying a charge of +e travels in a circular pa 9fp9yilmv8.yqk;9nfmms w c tp37;5tth in a uniform magnetic field. If instead t98.9f5 n wmv;p 7kc9ymt ilt3 yq;pmfshe particle carried a charge of +2e, the radius of the circular path would have been

  At a particular instant, an electron move62hp*xxfwka wfk ;uah4 +2/dvs eastward at speed V in a uniform magnetic field that is* h u4pxah/ k2 dav2;6xwkwf+f directed straight downward. The magnetic force that acts on it is

  An electron has an initial veloc5q40f -1vf:imt :spzqh)dg r rsbi60gity to the south but is observed to curve upward as the resul) 5hpq60t:s:giirmf bz q-gfs14d0vrt of a magnetic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a region whevydh3vz qgj25b:1-if re there is a uniform magnetic field in the +y direction. What is the directib5 1dqz2f3h: vyg vj-ion 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 currenta2lwlca, a 52v-carrying wire is

  At double the distance from a long current-car-61jur) xjhwkrying wire, the strength of the magnetic field produced by that wire decreases1) j- kujrxh6w to

  Two long parallel wires placed side-by-si n/ v)p1ozvu v1gw6udr7g 99side on a horizontal table carry identical size currents in opposite directions. The wire on your rig1n1zsuorgidgv9)7 /w p6uvv 9ht 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 horks tf(oq-g+f4izontal table carry identical current straight toward you. From your point ofosfkft- (+q 4g view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal currents. The mag7zss5 3a4p(h ap1bpqu nitude of the force between the wires is F. The current in each wire is now doubled. What is the magniq4p 3zs(5 upp7aa1sh btude of the new force between the two wires?

  A long straight wire carries current toward the east. A pro(r/7ds ftq fl+wg g)1kton moves toward the east alongside and just w df sgtlr1gf+)(7/qk south of the wire. What is the direction of the force on the proton?

  A wire lying in the plane of the page carries a9jed gd0w63ygu54eqy b eq. r3qg0e.c current toward the bottom of the ru00543 9.bcdyq.ggq je6y dge3q weepage. 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/q c /58fp 3wo:z)ir l;xql0 ezyc;rlh placed side-by-side on a horizontal table. If the wires carry current inxr5ho )l8ecr ;z0yi3 l l ;qcw//z:fpq the same direction,

  Two long parallel wires arry9 zpha0* ts7z9ldt6e placed side-by-side on a horizontal table. If the wires carry curt9lr*9 0d hp6yz stza7rent in opposite directions,

  Consider two current-carrying cirf)(t 3zxaa(pmcular loops. Both are made from one strand of wire and both carry the same current, but one has twice the radius of the fa(ztxam3()p 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 are made from one al.wp/te 0mfn y0a8;wstrand of wire and both carry the same current, but one has twiww80p0/my nfa l;ate.ce 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 angle be/9a7; vgp +mmenzq)l kp850mpbgcj +bye: *hntween the loop's magnetic moment and +/m:yvlc* pa qm g)0zjbb mk+en7p 5e9pg;n8hthe magnetic field vector is

  When placed askew in a magnetic field, a current carryr8yaxg 18 slm(ing loop that is free to rotate in any direction will experience a torque until its magnetic momenty xlsm1agr8(8 vector

  What fundamental fact underlies the operation of essentially all elexy8;rq ,r )c )n3qt,0g xrijwyctric motorstyyx)xqg, jiq;crr3r w 08,n)?

  A circular wire loop quyu9jpg ;2 q+lies in a horizontal plane on a table and carries current in a counterclockwise direction when viewed from above. qy9;2gu p jq+u 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 particle e85 v stpi:(dqof 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. Deriveqvi 5tp: se(8d an expression for the mass of the particle in terms of B, q, V, and R.

  A velocity selector consists of a charged particle :ysmv t2)fnx wm/9;x kpassing 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 wk9txfnm/ 2sx; y v)m:direction should the electric field point?

  A 2.0-m wire carrying a current of 0.60 A is oriented parallel tou(w ) y12qwwbl*r*z jq;/stkx a uniform magne /sx q;w2 qw*jlk1*bywu zrt()tic field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a di* o*yz xofim9t15 d4rarection 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 stra8yw(5mbayp 3nrq4:/ fe a bu0night wire carrying 5.0 A when it is placed in a magnetic field be8y /wq3n(fap nba5r4:u0my 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 and is in a magnet1j)a,79w x nu3wf fwnnic field of 0.10 T. What minimum current in the rod is needed in order for the magnetic force to cancel the weight of the r1 7)a,f nfnux3 wjw9wnod?

  A stationary proton is in a uniform magnetic field o e2myii(3 pbwxp49 2ikf 0.20 T. What is the magnitude of3(y24 wiexbi9pk mp2i 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 speet;wwp:0i*ym zv9yv,zr* nd+ id 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 spz*4xzh-+wfw ve4 un:xeed 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 wcag s ,)h8tqaftk94 1nith 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 shr* te 81udd,epeed 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 spei k+:zv n:,* gj* vktuljh5kp k7(9geled 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 gksqk dmgda-kj.z72-,l, u:tof $3.0 \times 10^6 \; m/s$ 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 +z11mp w ovt 6bar7sspn;00.jxoe 0 ff25 A. What is the magnitude of the magnetic field at a distance of 0.15 m from the 0wmoazvsp 71;fesxopj00b +frn6t.1 wire?

  A high power line carryin xt1aav5fn : )7gwknpy v(k(x,g 1000 A generates what magnetic field at the ground, 10 m :kxy5n a vnxwf7)1tvka, gp ((away?

  How much current must flow forv8an3sg/gri)ai j*st q3g -1r $1.0 \times 10^{-3} \; T$ 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 th pb;yen69efk 9bd f,w;e magnitude of the magnetic field due to the wire equal to the strength of the Earth's magnetic field opybfe,;b9w n ;e69fdk f about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents ofp .93 yl)kx p1ol.jy(z9mgvzz 10 A in opposite directions. They are 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 other?l9(9 lop..mvgzpyy )k3z1xzj

  Two long parallel wires carry currentmqqdv1b;+3wq 7m is1fql (a. y,gmkw 2s of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What mbyimfaq1q 2;3sgqm 7kq1 (+v.dw, wlis the magnetic field midway between the two wires?

  Two long parallel wires carry curcqarh9-3:c tg-z ev arth513prents of 20 A and 5.0 A in opposite directions. The wirarvc c93rt-: -t5ezqg3p1hahes are separated by 0.20 m. At what point between the two wires are the contributions from the two wires the same?

  Four long parallel wires each ;+mfr ;/dsth a;ia4wwcarry 2.0 A in 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 experience due to the other 4s/h;rw+ faaw;it; md wires?

  Two long parallel wires carry currents of 5.0 A and 8.s t, )jqxc*jz. a7bta;2q3y:+ok ou+b+igqfr 0 A in the opposite direction. The wires are separated by 0.30 m. Find the magnetic force per unit length between the tws7 +g2ut *ibr,qytk q);j.jxobczaa f+q+o:3o wires.

  What is the magnetic field at the center of6rjym/7b):kd (jkzjiizt ++ f a circular loop of wire of radius 4.0 cm when a currenjd):(fizym+z kikr7jjb t6 / +t of 2.0 A flows in the wire?

  A solenoid 20 cm long i,s4wp uo:w.wm3 clx+kv *jjj 8s wound with 5000 turns of wire. What magnetic field is produced at the centp+cw8j :.s wk4j3ljx w* mouv,er of the solenoid when a current of 10 A flows?

  A solenoid with 500 topkki. s m d0m;z v 2xce20ja80.mcv(durns is 0.10 m long and carries a current of 4.0 A. What strength of magnetic field will it have ak2z ed.ca0sx(8jd o 0mm;i2cmkpv. v 0t its center?

  How much current must pa9(zz/ 17( locaynw8iga+mb, 3tw v ehvss through a 400 turn coil 4.0 cm long to generate a 1.0-T magnetic field at thew a,e+ 7/ my 38zbc9go1invhzvtwa(l( center?

  How many turns should a 10-cm long solenoid have if it is to genera9rg ,e )b u)09cj n1igfh:drmsx p9qp5te 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 thl5br.*jl dfru: yyl2tn))3g;tsdmb 1 at carries 6.0 A if its dimensions are 4.0 cm x 8.0 cmy .2r n1t3llt)fb;r)*dsl:y bmu5gdj ?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic field opr4 :uapg n9*af 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane of the loop is per:9* prapg4anu pendicular to the magnetic field?

  A circular loop of wire of cross-sectional arels n4sl+h eq3-q*u b 85nqej3kb5h;yia $0.12 \; m^{2}$ 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 currentm(u e)3hc-.cl1 5jszv6f50jqinkwjo of 2.0 A is in a magnetic field of 3.5 T. The loop has an nwef s3j65c.1c-h50uk j qjmz( i)lvoarea 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 ofh)qlmn188/ lq2rn oeg*:x y sm 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 magn 2) snxe/q 818lhym:onm q*lgretic field?

  A circular loop of wire of radius 0.50 m is in a uniforh prz(;ky;x(am 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 paraxyk hr (p(;z;allel to the magnetic field?

  A circular wire loop of arxbun+f2 0 pt(oea $0.25 \; m^{2}$ 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) j+c1)px*vt lkhas 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 vel:dbn /hyjp(0i ocity $6.9 \times 10^6 \; m/s$ 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 magnsowsprn ;h2 ;3pd y16detic field of 0.040 T. What is the radius of the proton's resultinpn ;h2dws1 6 ;pdyr3osg orbit?

  A proton is accelerate7. zepiiszk.my42)cos:es1 lt h0 c.td from rest through 500 V. It enters a magnetic field of 0.30 T oriented perpends ehptt10 .4)z.:csms7ik . zy eo2iclicular to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a pi . lx63gmzuok v9 /ga;a:we,sotential difference of 10 kV before en.;a3izu 6awgo ,9ve:kx gsl/ mtering 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?