If the north poles of two bar magnets are brought close to each othelv7uho244 e jdr, the magnets wdu 24o4jve7 hlill

  If the south pole of one b w /efor.o4 ;w/9vybmf(xf tn8ar magnet is brought near the north pole of a second bar magnet, ;8 f.xmot/wfwy(fr 9v4ob/ enthe two magnets will

  If a bar magnet is divided inptg 3v-c5 yhjaogv4 :,dfoq:3to two equal pieces,

  The Earth's geographic North Pole is magnetica2aunl y+ t*)kxlly a

  The south pole of a maho1r-0 7jp v;jmruceo+r.9 j brb b:o8gnet points toward the Earth's

  An electric current prodxf:u7,hb,bem r * c+u:cxe, tguces

  Which of the following is cord4 8bkty )la :pg*rh1xrect?

  A vertical wire carries a current straight down. wggh.sc( ca ozj9iei .)89 b7zTo the east of this wire, the masgh98)b7(goaiw iz9ce cz. .jgnetic field points

  A horizontal wire carries a current straight t9fj;/zs mw1xhoward you. From your point of view, the mag9j/ fzshm xw1;netic field caused by this current

  A current carrying loop of wire lies flat on a table top. When viewe cks ustpp8+wj+xa86p, t2/bcd from above, the current moves around the loop in a counterclockaup+2sc6xt j, tk p/b8+c wsp8wise 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*j oe5dhs92g axwf pm6(+; weo 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 awe6e9p2 ;do(jxf*m+h gw5so by this current, inside the loop? The magnetic field

  The SI unit of magnetic field is xu,rihd w/;o kc-u h75the

  1 T is equivalent tow+6cb t )qld3lxs dcf;hv0 2y-

  The direction of the force on a current-carrying wire in a magnetic field is d918wwv( 9 gwsyq:vfnxescrqwx9vfny9 18( :wwgsv ibed by which of the following?

  The force on a current1 tboa)kv*cvr 3yc yt8:qfr3,-carrying wire in a magnetic field is the strongest when

  The force on a current-carrying wire in a magnetic field is equal to ziju 0gxqrval30 o-42y ero when

  A vertical wire carries a current straight up in a region where the magnetic pqitph pbmj sd.h e76.*t:pkwrl7 */emz-c/2 field vector points due north. What is the direction of the resulm6 *d w2 itc7h.p*tqp pj k7bh. /ems/lzr-:peting force on this current?

  A charged particle move zpr (kf72j.5/hzqdu(nfbf gky 2o8*is and experiences no magnetic force. From this we can conclud2k fnrq zhf(u y.5i(/pk 28z*o7b gdfje that

  A charged particle moves with a constant speed through a region where a unifor2 ,mt67mu ikhrm magnetic field is present. If the magnetic field points straight upward, the magnetic force actt,kh7u 2r 6mmiing on this particle will be maximum when the particle moves

  A charged particle moves across a constant magnetic field. The magnetic18 rywvz/5axmh (j 0yy force on thy 0m wy5y/av(1jzxr8h is particle

  A charged particle is injected int+rh96tmy gt j8o a uniform magnetic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring the phtmy8jr+tg 69 article's weight, the particle will

  A charged particle is observed travelin 4lr3fw5rmkung ,2+h8di ibc/g in a circular path in a uniform magnetic field. If the particle had been traveling twice as fast, the radius of the circular pnu/ w,g 5d 4r8 cmlb23irkfhi+ath would be

  A particle carrying hnmstld2+1 ; ma charge of +e travels in a circular path in a uniform magnetic field. If instead the particle carri nh lmd1+m2;tsed a charge of +2e, the radius of the circular path would have been

  At a particular instant, an electron moves ealgo5n ih2/ 9ffstward at speed V in a uniform magnetic field that is directed straight downward.o/i5g f2hnf9l The magnetic force that acts on it is

  An electron has an initial velocity to the south but is observed to cur(cxcnugz,0 x*gc * /dave upward as the res*, g gxccxn/(*u0ac dzult of a magnetic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a region where thermc.k dkwu1,vk t,- wv7e is a uniform magnetic field in the +y direction. What is the direction of the magnetic force on the electron? (+x to,1 vdwkt-ku7m v., cwk right, +y up, and +z out of the page.)

  The magnetic field produced by a long strae-t 1blpxcpx8k (g(zp00s.hzight current-carrying wire is

  At double the distanc3htb0/)qk j+ gcbhl4/m ad ,bqe from a long current-carrying wire, the strength of the magnetic field produced by that wire decreases t qmcbbq atjb/l4+gh3/,0) dkho

  Two long parallel wires placed side-by-side on a horizontal table carry identicafw+wjwd4 t4/j4of ld,/2vcywz pt *5m l size currents in opposite dire+mp*tywt z45fwj,2djd/wwlv o 4 4 /cfctions. 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 wires placed side-by-side on a hor1*5wgs cmqn, uizontal table carry identical cu* 1 uq,5gnwsmcrrent 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. Td hquzb) 5pim.bjhxytb l)* .qi01;-qhe magnitude of the force between the wires is F. The current in ea hbl-yqpxm*i;iubb. jh.1dq) qt)05z ch wire is now doubled. What is the magnitude of the new force between the two wires?

  A long straight wire ca dz8w4.asua 3drries current toward the east. A proton moves toward the east alongside and ju48s3ad.uz d awst 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 current towahc;l- o6)+ vq jcm ;/jpth6laird the bottom of the page. What is the d6lo+t/6liaj hc mch-; ;qj v)pirection 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 placed side-by-side on a horizontal table. +b* rlk,rdd;bIf the wires carry current in the same directr ,kl;* r+dbbdion,

  Two long parallel wires are placed side-by-sidx p hflqel+vh2,6j7e4 e on a horizontal table. If the wires carry current hv7l xpe,fh46ej q+l2in opposite directions,

  Consider two current-carrying circular loops. Both are mae65xa71fq* vme+gky o de from one strand 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 lo qyao57mf xve+6 g*k1eop, the magnetic field at the center of the larger loop is

  Consider two current-carrying circular loops. Both arezg3/2:1op8 xgkz udt5 nk a6ir*xl*ea 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 moment of the 2x*8gz p5:k6lia/nzak1o* 3 uxrt gdelarger loop is

  The maximum torque on a current carrying loop ocb0kflc sx/1ro sqr9+. curs when the angle between the loop's magnetic mome9/r sox 0.cfk1sq rbl+nt and the magnetic field vector is

  When placed askew in a mak;03bftxxl zvxhe 6 ln)1+. zzgnetic field, a current carrying loop that is free to rotate in any direction will experience a torque until its magnetic moment xxlk v.03lt x ;z)n16fzz+h ebvector

  What fundamental fact underlies the operation nicxy +x 1k 1g2txw45cof essentially all electric motorsckw nc51tx4 1i xgy2x+?

  A circular wire loop lies in a horizontal plane on a tablbtx y7 7dsun9,m hu8e ud/ sa.hl*.s0ne 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 currents interaction with the m0u,y*l7nxh7h8 .a su bs/us9dm.tde nagnetic field?

  In a mass spectrometer a particle of mass m and charge q isk83n64 mto+htan s wlb6 5n(zw accelerated through a potential difference V and allowed to enter a magnetic field B, where it is deflected in a semi-circular pao5n6wk3 l 6n4z(w+sm nh8abt tth 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 particle passing through cronb5by( kihch +36u/5.ssv velssed 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 veloci 5sl.vn h c y5eubkhi+3/vbs(6ty 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 1rf2zg6sj m8pt2g4p nuniform magneti16s 8mjpp24 t zgrgnf2c field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a dw sa0 p/p3ix*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 carrying 5.0 A when it is plac*ppjocw t69 x2r: )u9xu f-fdped in a magnetic field 2 p-u9 w*frpucxjo9dt6 fp:x)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 ic2 tv(arg5lr(w9 jh+long has a mass of 0.050 kg and is in a magnetic field of 0.10 T. What minimum current in the rod is needed in order for the magnetic force to trl59h( irv(w2 a g+jccancel the weight of the rod?

  A stationary proton is in a unjlv. oi.o d jjh: u(w;trs4:6bh57h dbiform magnetic field of 0.20 T. What is the magnitude of the magnetic force on thjvb:j hdd l65r iu. s;t:.7bow( ohhj4e 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 speey6rn o+uhh-ny up z972d 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 speed of ot w/p)vlk( pdq (81fu$5.0 \times 10^7 \; m/s$ 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 sp aoq q9wh0z eh b*0m(pztodl:(nk 3r,:eed $4.0 \times 10^5 \; m/s$ 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 sxy knc)6+;lt dvl3 p1k):i qvzpeed 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 spee ogsrbt/se34(k f (ii2d 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 :, iwigdel6+gof $3.0 \times 10^6 \; m/s$ 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.k(w2b4ekuc j wire carries a current of 25 A. What is the magnitude of the mbku4. (ce2 kwjagnetic field at a distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magnetic field at the grod saqcr9/j jm9. 6qr5wund, 10 m away? ra.9w j6qr5cjqs/md9

  How much current must f md 3a.f(9)yadgvpp v.low 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 curua kpw ekh(( *ch3.c3i:wo7sfrent of 5.0 A is the magnitude of the magnetic kwc*uki.c 7 hsh o(fw(pe3 :a3field 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. ,*l 7mibwnswyv / c m)42hsaz: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 cvs 4ia cmwb*h mzls:7w,yn2/) m from the other?

  Two long parallel wires carry cul08)bn bf ctm1rrents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the magnetic field m8fnctm01l bb) idway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in.4fd)kpjio4mj jtm1dt3n*q/ opposite directions. The wires are separated by 0.20 m. At what point between the two wires are the contributions from the two wptoim4tk/ nj *dd4q)1f3j. mjires the same?

  Four long parallel wires each carry 2.0 A inoi0zjw exce8t 6zr 408 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 ext8zjoz erw0e 8604ci xperience due to the other wires?

  Two long parallel wires carry currents of 5.0 A and 8.0 A in the opposi *h9g aim*bc)xte direction. The wires are separated by 0.30 m. Find the magnetic*h g*axcm9)i b force per unit length between the two wires.

  What is the magnetic fie3xt*pryzhy cu;;l--old at the center of a circular loop of wire of radius 4.0 cm when r-lc;hp*oz txy-y u 3;a current of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns 1m5.vcza;vsv) +uh mrof wire. What magnetic field is produced at the center of the solenoid when a current of )sv va1+h; .v u5mcrmz10 A flows?

  A solenoid with 500 turns is 0.10 swf5(my:kr +e m long and carries a current of 4.0 A. What strength of magnetic fis(yw :mekrf 5+eld will it have at its center?

  How much current must pass througzqn.6 +3j awlmh a 400 turn coil 4.0 cm long to generate a 1.0-T maalj+q wz.n63m gnetic field at the center?

  How many turns should a cy1c:p8b st nb.x)9x s10-cm long solenoid 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 ocbjzu jneqjh (2d5b m7 t*3e80f a rectangular loop of 120 turns that carries 6.0 A if its dimensions are 4.0 cm x 8.0 qh*507bzmc u3 n(8de bj2tjjecm?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic field of 0.3yy(u7w h;z 6ly0 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane of the loop is perpendicular to thz76uy wyyh;l( e magnetic field?

  A circular loop of wire of cross-seh bv6nlt+azd 29jy 88bctional 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 carry/l;lj* 61 :kbzyv uuiking a current of 2.0 A is in a magnetic field of 3.5 T. The lob;kj iluz1/ky v*6u:l op has 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 ficz e/q ,zek+scfx/;n- uh rer4 )q3t/leld of 0.30 T. Thx efhl/s cue ;z rr/43)enqt,qk-+/zce 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 radi39rk 1jeu*2 myoz 6uezus 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 z uj3612eezro *ku9myparallel to the magnetic field?

  A circular wire loop34gy lv zfn+*n hh,q+m of 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 single-charged particle (charge e) has a speed of:al.lk .g4+)xjtupa w $1.0 \times 10^6 \; m/s$ 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 w:lwqf*8mh)oo)x +vf)xdeqi)ni x33 tith velocity $6.9 \times 10^6 \; m/s$ 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 potentiav0-rxe nh,o /ul of 1.0 kV and then moves into a magnetic field of 0.040 T. What is the radius of the proton's re/ v nhou0x-,resulting orbit?

  A proton is accelerated from rest through 500 V. Itmlriaju5-ba;: en /aq;v df:. enters a magnetic field of 0.30 T oriented perpendicular t./:;dlafriam -u: eqjba v;5n o its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is acce8 ,oqp- mv+vdulerated through a potential difference of 10 kV before entering a velocity selector. If the B-field of the velocity selector has a value of 0.010 T, what valu,8muo+pvd v- qe of the E-field is required if the particles are to be undeflected?