If the north poles of two bar magnets are brought close to each other, t pv,e92t3d rivak 1jt+he magnetsvjt kd39p ,ta+2ri ve1 will

  If the south pole of one bar m 7 crobe7n0+2 zf)1quyd cvae(agnet is brought near the north pole of a second bar magnet, the tweb r7q7ye uo+c1 acn0z2d) v(fo magnets will

  If a bar magnet is divnvx6c2r f a)z+ided into two equal pieces,

  The Earth's geograph gy+n1jdxv7z 1n )7u sp)zqzb+ic North Pole is magnetically a

  The south pole of a magnet points toward thwdu31 7)f(fie hbo2il e Earth's

  An electric current produc )x4.uhu* gr ag(xb(yves

  Which of the following ;q x 5l:kc4e;ls(wlid9u7 rk-.fbabo is correct?

  A vertical wire carries ipa x ,7fbg47gfm6s9ocl +9syj.v0pfa current straight down. To the east of this wire, the magnetic field poi+ .g6p0faylcofgiv94p97,bs fm x7 jsnts

  A horizontal wire carries a current straight toward you. From yourcum8 -,i+kp1 ycao3kh point of view, the magnetic fieh ,81pc+o m- ykuk3caild caused by this current

  A current carrying loop of wire lies flat on a table top.+jb(7tgu1auc- b n8jc When viewed from above, the current moves at+gcu 7 j18bnj(buca-round the loop in a counterclockwise sense. What is the direction of the magnetic field caused by this current, outside the loop? The magnetic field

  A current carrying circular loop of wire lies flat on a tableaz .:dcjpbzt 239 r9le 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, inside the l.29dl9 bzt zec3p:j aroop? The magnetic field

  The SI unit of magnetic .ti 8tx3r(uv tfield is the

  1 T is equivalent to*)fsl4 u twb2-cf2vc9zr 4zqw uv18nl

  The direction of the force on a current-carrying wire in a magnetic field60qb (mw9cw qi yh;/fft3z up. is described by which oft 0bi6qu p/9y.h( cwzm;w 3qff the following?

  The force on a current-carrying wire in a magnetic field i*hqa 3dv jv)nzb;6trbj* .p)vs the strongest when

  The force on a current-carrying w4: (n-iio*tjqi -0n2jzccsq x ire in a magnetic field is equal to zero when

  A vertical wire carries a current straight up in a region wherq*3et.h*nhmp vkx z9j 9aw6:u e the magnetic field vector points due north. What: 9t vhnu*z.qxa mjh ew*9p6k3 is the direction of the resulting force on this current?

  A charged particle moves and experiencexy j :vz:mg*cf7v14eeniur z2r1t,4 qs no magnetic force. From this we can conclvrz cf yxevq:2nr,uj1ie7m1g*tz: 44 ude that

  A charged particle moves with a constant speed through a region wheleeo p/ 5znj,f2ux1.jyc6xb9 re a uniform magnc j/zp5ne.1ju6xfl exb,y o9 2etic field 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 magnetic ;) /s7v:)xr9gw dk iskvcf,ufj9b4qtfield. The magnetic force on this p :tfwv;s9u47cq,kgi s r v9xfd)/ bj)karticle

  A charged particle is injected into a uniforx6 ih i8: ai-ibfib 352cr)4qeu*rponm magnetic field such that its velocity ve85 axo if2pii nr*bi6riue-q4bh c):3ctor is perpendicular to the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in a circular path n 7 xu/.wnserh148 xnmf6lo; ein a uniform magnetic field. If the particle h84ml noe/ew6hfn;.r su 1xn7xad been traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e travels in a circular pa h6a7slj 3,d y/nyx/kbth in a uniform magnetic field. If instead the particle carri,b7d nhjly xsy/a6/k3ed a charge of +2e, the radius of the circular path would have been

  At a particular instant, an electron moves eastward at r qgn,y8 l k0)zxs*:znspeed V in a uniform magnetic field that is directed straight downward. The magnetic force that acts on it xg*0 z q8nkzsr n,y:)lis

  An electron has an initial velocity to the south but is observed to 28pp,-.*ngcnz 1t: a66ijwdesdb ufdi d; mm4curve upward as the result of a magnetic field. The direction of tfdpm g18dsj pibdtdn4em-; 6z:2 wuan . *,ci6he magnetic field is

  An electron moving along the +x axis enters a region where there is a unm4l.jt fsq/ 7:d am*uiv0 i7eriform magnetic fiel7t r0jd:/v4miasu*q i elf.m 7d in the +y direction. What is the direction of the magnetic force on the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced by/i6hsog o +ue0 a long straight current-carrying wire is

  At double the distance from a l;f,9s lqdac9 tl:ge - r5r059gw nkbxzong current-carrying wire, the strength of the magnetic field prod 5g9,9fb9ltdzs- glxr q:k na0;we5 rcuced by that wire decreases to

  Two long parallel wires placed side-by-side on a horizontal table rjg mxot0:x4fe44g9u carry identical size currents in opposite directions. The wire on your right carries current toward you4xx reg9g4t0u 4o: jfm, 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 horizontal table carry identic s) sxjt,2zkk-sobrgv4 q)+9lal current straight toward you. From your point of view, the mtosxq 4)bz- ,ks)jk s+ 2vr9glagnetic field at the point exactly between the two wires

  Two long parallel wires carry equal cf u8i d0 9pms3 2;ssokm9ux+ccurrents. The magnitude of the force between the wires is F. The current in each wire is now doubled. What is the magni2 p +dom scsx9; mcuus0fk83i9tude of the new force between the two wires?

  A long straight wire carries current toward the east. A protoot(lqf5,jwi ;t/nq fz)+i r 0zn moves toward the east alongside /l,zijq;)rfw( iotn z +fq50t and 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 curru ja*e4j 8(-agzkihjh;cf x cgx-3 m05ent toward the bottom of the page. What is the direction of*jujg0a i8h(fc4 kj--;hg 5xa3zmexc 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 wiresjc 3poi8uow/6 3poafz-s7 j k( are placed side-by-side on a horizontal table. If the wires carry currentup8/3io(3o-pjz76c w okafjs in the same direction,

  Two long parallel wires are placed side-lfxqh /0txw8a5dl(x l 3jh yc5,vdb0(by-side on a horizontal table. If the wires carry curreqh3v5 0(x/t(dly dwlxxf5 8jhl 0,bacnt in opposite directions,

  Consider two current-carrying cira )l1yj4zl 3erf gr4l5la z-8hcular loops. Both are made from one strand of wire and both carry the same current, but one has twice the radius of the other. Czfe3rh5ya la)z8j4 r4-l 1ll gompared 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 circqg*. ceji8ou9 ular loops. Both are made from one strand of wire and both carry the same current, but one has twice the radius u oc.9 egijq*8of 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 c; (aqlyos . tpm(ag.(sadph585qk5n d arrying loop occurs when the angle between the loop's magnetic mome;ko5g5sma qd h5( q8ls..pda(a npyt(nt and the magnetic field vector is

  When placed askew in a magnetic field, a current carrying loop that is free to r.cv; :oetwzy9 ,ud 1reotate in any direction will experience a torque until its magneeu ,vozrwc9d1:.;yt e tic moment vector

  What fundamental fact underlies t)5( 5tsfxy;q ok6evx qhe operation of essentially all electric motorske5)fo(t;5v6 s qqyx x?

  A circular wire loop lies in aux6 cpxpso*:xlg9 1 u. horizontal plane on a table and carries current in a counterclockwise direction when viewed from above. At this point, the opg uuxp. s*6c:xx1l 9Earth'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 particleprg)k)g+-nle uz /.qp 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 forz+ /puprn )l.qke-g )g the mass of the particle in terms of B, q, V, and R.

  A velocity selector consists of a charged particle passing through crossed elg*n9p 6h1lj ;zj r+ 8hkcmlg6kectric 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, andr6+mlk 6c g gp8k9h1nz hj*lj; 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 uniform magn s,bol r,5yf)sd8, wv,+kwuv ietic field ou8)rvw,y5 i,lf,v+ dkow bs,sf
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a directjb5 (m4xsiji gm;b yo2o 17)gxion 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 5oroei ,jcm6;5.0 A when it is placed in a magnetic field of 0.020 o;ec65ijm,or 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 macb(ee q.ztkf2nsf, ) q8: x3tagnetic field of 0.10 T. What minimum current in the rod is needed in order for the magnetic force to canceqq sxc8fbkt)2e, :ft3 .(zaen l the weight of the rod?

  A stationary proton is in a uniform magnetic field wf9tinv2 o)i*of 0.20 T. What is the magnitude of the magnetic force on the)n* ivi9owft 2 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 speetcw+bu;m uqv7:*6v.j ko6 q edd 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 speedx5d2i(ut b71d 9xwb,mr/l hja 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 speedy+o ze+iexi*4z i d,u: $4.0 \times 10^5 \; m/s$ 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 ay crm)*:wctq7 speed 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 s0 8m/*lybynqsh 0pkl2peed 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 of zn, ok2 j:bff eu.(mo*$3.0 \times 10^6 \; m/s$ 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 magnit+nlch g/i6vwskx d,cm7c2 n9 :ude of the magnetic field at a distance of 0.15 m x cn, v29/cg7k:+hsmicnd6wl from the wire?

  A high power line carrying 1000 A generates what magnetic field at the grouq8ff)zvlp. ti hi+7-wu7xi20hp/pux nd, 10 m away7lxtxv.2iphpufz -f 7iw0p i8q u)h+/?

  How much current must flow fop, s.khs4g ta4r $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long straight wire carrying a current of4 f.7h+t74iyogtqrj p 5.0 A is the magnitude of the magnetic field due to the wiroi4th77 +fjpgr yt4q.e 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 27 sd eke buedgp.ugo:z*,3x5A in opposite directions. They are separated by 40 cm. What ig eg. 7uue5d2p*:x,zdk3 sboes 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 oppositfdx)* qlc(q-k u3ghb.5 uwuqyto :3a2e directions. The wires are separated by 0.20 m. What is the matloquak 3uuq3. x d5* gh-f:y (2)bcwqgnetic field midway between the two wires?

  Two long parallel wires carry currents of 20 A and d),gunaqkb 29,ewa *s 5.0 A in opposite directions. The wires are separated by 0.20 m. At what point between the twb,) asq,a9gkwne d*2uo wires are the contributions from the two wires the same?

  Four long parallel wires each carry 2.0 A in the same directio bjid23t1k,(k 1mxbkd n. They are parallel to the z-axis, and they pass throb 3k2(tm jk1b1,dixkdugh 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 wires?

  Two long parallel wires carry c2p 31wyw(0rpyjz s gt*urrents of 5.0 A and 8.0 A in the opposite direction. The wires are separated by 0.30 m. Find the magnetic force per unit length between the two wijp1 y3s (wy0rtp*2wzgres.

  What is the magnetic y7wgf(e7-oz0 m8c x2yyzt ji 1field at the center of a circular loop of wire of radius 4.0 cm when a current of 2.0 A flows in w(fx-ctg 781y2m7zi jyye0z othe wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. :c v g1,,)b vbyvx3gzc What magnetic field is produced at the center of the solenoid when a current of 10 A ,3zgc:g,v yv 1bvcx)b flows?

  A solenoid with 500 turns is 0.10 m long and carri11qszf a* ecr9es a current of 4.0 A. What strength of mcs f9ezr a1*q1agnetic field will it have at its center?

  How much current must pass through a 400 turn coil 4.0 cm long to generate r + h,ij0br8zd:9x egja 1.0-T magne9 g0b+hjjez x,rdir8:tic field at the center?

  How many turns should a 10-cm long sol ukr,f; 4bbw1b:-q 3obgucyw 7enoid 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 rectangutfugn r5z *-;j5 3xfzilar loop of 120 turns that carries 6.0 A if its dimensionst xg-i;z3n5 rffj u*5z are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m e5de 7ums8o yx twulb)1*(pi0is 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 7osu)exb w mie1*yltu5p8(d 0magnetic field?

  A circular loop of wire of cross-sectional area 5rx;73r k)taq n+gy njt-xs/yy1k o *q$0.12 \; m^{2}$ 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 curren:f3n7 uz hg6:cci jym;,1r nc s0xpvtmv z94c;t of 2.0 A is in a magnetic field of 3.5 T. The loop has an areaf4uc7pzj ;:9tv6i,n0 gymmcxc;3zscv 1n: r h 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 .ovxm*wcw k(40.30 T. The current in the loop is .ww o(x4c* kmv2.0 A. What is the magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular loop of wire of radiu a(wsywp/o9ov( 8ie9a, 4den cs 0.50 m is in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. What is thesiv/o w8c9dy9awep ( ( enoa,4 magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop of arean(um 0q kzhcg/io-1t, $0.25 \; m^{2}$ 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-charged8.mn+ ahv si 0elke5bgk9i6 3dz5aq8x 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 velocity juzg::r )g+nc 8/0 iux3xvhkm $6.9 \times 10^6 \; m/s$ 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 magnetici0+zk *yf3subvxi jg ic)6sol-/e u5, field of 0.040 T. What is the rk63u0*igjcu/zfsi,)s+ix5 le -bv oyadius of the proton's resulting orbit?

  A proton is accelerated from rest through 500 qgq zyaxm:6vdew4u l72 .6br;V. It enters a magnetic field of 0.30 T oriented perpendicular to its di:ga6 qzed 7.ulr2wyb;mq46vx rection of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potential difference of 10 j:xflief( t+8t7ot zr g)0ypi9.few- kV before entering a velocity selector. If the B-field oreti.:7 tfi-z)f +exg9fwo 8 jy0 ltp(f 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?