If the north poles of two bar magnets are broueg1(63q9 hqnkc(u vo q(z;e ru-rq:qr ght close to each other, the magnets will- oqe169kn:hgec( ;q3((rqru u qvzqr

  If the south pole of one bar magnet is brought near t )3e,np*i m 0mlznb+oyhe north pole of a second bar magnet, t )lnep+3z *on ,m0bmiyhe two magnets will

  If a bar magnet is divided into tr1 q mmkw3a ol9;ga72s5eyj7b7 t2aec wo equal pieces,

  The Earth's geographic North Pole is magnetiq0ae 4e)a1nf ajh2u7voj t:h.cally a

  The south pole of a magnet points toward thdex7 agqvv6; 9e Earth's

  An electric current -y0ar)ssoq2 +z8uc f)lhqdr hcu5d -3produces

  Which of the following is corrmprmhb o46+4od2l 6p rect?

  A vertical wire carries a c d3z s/2hzg8 m0hws2ziurrent straight down. To the east of this wire, the m8 z zh0si22/w h3zdmgsagnetic field points

  A horizontal wire carries a current strai8)7nt zgqf4xvl(v+7yaj q v6 ight toward you. From your point of view, the magnetic field caused xqj f vzvgqiva 7+ty(l64n7 )8by this current

  A current carrying loop of wire lies flat on a table topdyt+vtrp-/.ppk3pt am1d 3 r3 . When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic field caused by th t13 r3kpayt/+pdvt 3-dr.ppm is current, outside the loop? The magnetic field

  A current carrying circular loop of wire lies flao m01i mj.x)xbt 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 c)1immjb o 0x.xaused by this current, inside the loop? The magnetic field

  The SI unit of magnet0h u49/ii4yek ps8wluic field is the

  1 T is equivalent to 5s ;xhtyzyxse11 *pm-

  The direction of the force on a curregiy 3 sa5an-q:nt-carrying wire in a magnetic field is described by which of the follo -5aygq:a3is nwing?

  The force on a current-carrying wire in a magnetic field is the strongest w2, 6-5vooo ssxzjkpmzjqr ,;9hen

  The force on a current-carrying wire in a magnetic fia7m e1u5aeaj -eld is equal to zero when

  A vertical wire carries a current straight f+1j8hy od)kzqh jia uc8 b.41up in a region where the magnetic field vector points due north.h4hdf c) 8+ku8zbj j yi1qa1.o What is the direction of the resulting force on this current?

  A charged particle moves and experiencesms 5s95v.-noyy fsg8zlk56qy no magnetic force. From this we can concl8oqvyzn5lfs5ygy5ss k 9 m6.- ude that

  A charged particle moves with a constant speed through a re8em0vk)4g f *c2b,hb/ebwlubgion where a uniform magnetic fieldeb* bckh8w f ,mg04l/b )veu2b 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 mr+6qg yr)xs0i,dkk6zoves across a constant magnetic field. The magnetic force on thg0srqrz 6yi,6 d xk+)kis particle

  A charged particle is injected into a h+f5n**tj6 5mkukval okx* d2uniform magnetic field such that its velocity vector is perpendicular to the magnetic fiel2*ln vtkja*mhxk5d*u 5kfo+ 6d vector. Ignoring the particle's weight, the particle will

  A charged particle is observed travpt(3f(b bh+ l*j why6v*t:fqv eling in a circular path in a uniform magnetic field. If the particle hadjtqb:+3*pyhbvlf(t( *v6 h fw been traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of ed ,w. 5 o1kv, f2ngrevtgz++hv+g- up+e travels in a circular path in a uniform magnetic field. If instegt2fu -g v, n+veegrzdpoh5.1,v+w+kad the particle carried a charge of +2e, the radius of the circular path would have been

  At a particular instant, an electron moves eastward at speed V in a uni)kuj lc(2 *ailform magnetic field that is directed straight downward. Tha*l )2jlc k(uie magnetic force that acts on it is

  An electron has an initial velocity to the south but is observed to curve upw 02*x.az l t+9ik kyd9a4gcaabard 0ty kgac9z+ad*l92 b ax.4a ikas the result of a magnetic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a region where there is a uniform m.. agj+/hscnt agnetic field in the +y direction. What is the direction of the magnetic force on the electron? (+x to right./a .+ snghjct, +y up, and +z out of the page.)

  The magnetic field produced by a 9v qhssfbz x0.+ ;8asj.v0qq along straight current-carrying wire is

  At double the distance from a long current-carryingzxvl) q0;n7; ko:rv ofkde; rxid9u2 dbu,7j : wire, the strength of the magnetic field produced by that wire de;9):7;fk7v0; onur2xbd kizdvxru ,l qdoe j: creases to

  Two long parallel wires placed side-by-side ky uq-ft/j7+e 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 yoy - 7e/jkqfu+tu. 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 horis,vs,y y py9z t(*ma)ozontal table carry identical current straight toward you. From your po)t so, ,s9(mvyya*zpyint of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry e:botc. +a f )xr.mgld.qual currents. The magnitude of the force between the wires is F. The current in each wire is now doubled. What is the magnitude of the neaol:frtmg cd. x.+.b)w force between the two wires?

  A long straight wire 8is)j a,ev*od carries current toward the east. A proton moves toward the east alongside and just south of the wire. What is the dired i*8evaos,) jction of the force on the proton?

  A wire lying in the pqih g29vy0n8toupi83 lane of 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 toward the wire, also tnqv9 2 o0g 8ipi8hu3yin the plane of the page, from your right?

  Two long parallel wires are placedy p-; cjzsoj7- 0iiqum65 cds, side-by-side on a horizontal table. If the wires carry current in tp7j5uzoic ;dyj6 -,0 qm-c isshe same direction,

  Two long parallel wires are placed side-by-side ytky(+g1o h8pl sz /494umwjoon a horizontal table. If the wires carrt+ jhp 4yl(uz g918wskym/4 ooy current in opposite directions,

  Consider two current-carrying circularufefm;p8y 9*nfejr1gq) r1 n 6 loops. Both are made from one strand of wire and both carry the same current, but one has twice the radius of thegfn*jeq )1f 1rf;epu yrn 96m8 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 strand ofb 5qb m3x9xf .(crpsd3 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 mf pdq sr b5bx3cx39(.the larger loop is

  The maximum torque on a current carrying loop occurs when the as(zw4 8/ton.k0r9 jf(ktp v7d kpq/aengle between the loop's magnetic moment n0 /ejv/9q otfpkd8(( rkpas7z. wtk4and the magnetic field vector is

  When placed askew in a magnetic field, a current carrying loop that l(z771qdiazbapn -a4jjr2 , ais free to rotate in any direction will experience a tor-4(2aaajbq77npz l ,i 1jrdazque until its magnetic moment vector

  What fundamental fact unf-6 +a)g *z7 h)jupmh5ppzrlg derlies the operation of essentially all electric motors?p56lp gpzrj)7 )a fzh+humg -*

  A circular wire loop lies in a horizontw, 6s::yhch):i1gxz)mo js sv al 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 horizontal. Which side of the coil tends to lift off of the table because of the torque caused by the currents interaction with thygvs:6hcxz im1h,s :)jw)s :oe magnetic field?

  In a mass spectromet;1x bt8fcf4est tzlpc 6:d/t* er a particle 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 61/:dttt;cf x*ep lzc b4s 8ftoriented 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 ci ma os,+h5)qvonsists of a charged particle passing through crossed electric and magnh,oq vmas +)5ietic 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 direction should the electric field point?

  A 2.0-m wire carrying a cur b ,ubiktg--bai .h89znhk bi9ssn-)*rent of 0.60 A is oriented parallel to a uniform magnetic fieldz--bas bkhinu-s)9 nb g.8*k9tihib, of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10wg6-)f p- eposh + 7l+uya,sbu A in a 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 . 7)wqicu ;u2nbekvz 3wire carrying 5.0 A when it is placed in a euz k3wiuv)nqb;.7 c2magnetic 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 (54iqzor/d;ato 3 arz m 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 cancel the weight of t5/ odz4; zaq iroar(3the rod?

  A stationary proton is in a uniform magnetic field of a iairx,(fqn4-8h 4jv8x d z)d0.20 T. What is the magnitude of the magnetic force on the proa4iid v(jh8)- d8q a4xfr, xznton?

  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 spees:e pid6la 1)cd 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 spo51dk7 lp/5fl.ll cygeed 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 yv)94g;uc / 6imuywfwnorth 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 lz*s yps1lx 4(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 wi:mfvkp g v1yjy(4pz,b;(2ypsc; dn+cth a 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 acceleration of the electron.

  A proton has a speed 8p9ka ml g8e,/w+kqi dqe,tc; bu;.biof $3.0 \times 10^6 \; m/s$ 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 ws7;b91ko hmrwi 8:qpykj9; llire carries a current of 25 A. What is the magnitude of the magnetic field at a ;k qb1 9mr:k7sp8o ;h lyiljw9distance of 0.15 m from the wire?

  A high power line carrying 1000 A generaty 6ml78fb mm ucd8.a,pez 1zv)es what magnetic field at the ground, 1z y.a1b, mducel8fm p8) zvm670 m away?

  How much current must fza4vji q/o5/+b3vzdn qzwp/-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 s du3 wd,v;a2thc q7hq5traight wire carrying a current of 5.0 A is the magnitude of the magnetic ficw 32;q75 dh quatdv,held 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 o a2 thd1pdvr2:l+zw/ofb- rj2pposite directions. They are separated byvt / j2+r-w:zphdlf1d2a b ro2 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 opposite directions2c+hsn 6je8ajqf.gzae1o 8+x. The wires are separated by 0.20 m. a .h21+geec8o+zxn 68a jjqsfWhat is the magnetic field midway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite directiolovq-t ovw0 r5ee, v9+ns. The wires are separateq-o50owv ,t9v vl +ered by 0.20 m. At what point between the two wires are the contributions from the two wires the same?

  Four long parallel wires eajg.ny*9a4aa .-y hmlfch carry 2.0 A in the same direction. They are parallel to the z-axis, and they pass throuyyfa4j.n g9ah.* al-mgh 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 currents-37zy9x y ynxfas bar99zc+yrh) w/5 p 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 betweewc 75yr3pnx)-r s yz9fz/9h9+b xy aayn the two wires.

  What is the magnetic field ayj d6;kzew.i5v9ep g8 ik*x)qt the center of a circular loop of wire of radius 4.0 cm when a current of 2.0 A flows in tie)j8dy6 5 p9w;xvz e.*gqkki he wire?

  A solenoid 20 cm long is wound wn rb3o 9lffrh,0 zh;;ssag/pdk 0 :q.mith 5000 turns of wire. What magnetic field is produced at the center of the solenoid when a current of 10 A fl. 0m/3g,f sl0honabz krd :hfp;s9q;r ows?

  A solenoid with 500 turns is 0.10 m long and carries a current of 4.0 A. Whatibc*9 /kg+ vb/ tw1riv strength of magnetic fi+c/9*g1r/i tw kib vbveld will it have at its center?

  How much current must pass through a 400 turn coil 4.0 cm long tj- *aw *z dggts3x:,vpo generate a 1.0-T magnetic field at the center?,w sg*a:pg 3d*v tzjx-

  How many turns should a 10-cm long solenoid 4ncy 5;jpro( kwy5g 6ohave 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 12e1 vm. i.y)rr/tctaf; 0 turns that carries 6.0 A if its dimensions are 4.0 cm x 8.0 ctyervac. /1rf.m) t; im?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic field of 0* kubk5ov+qy5pr/ xs3j y0 b(g.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane of th5b*(+bg y3kqp0 uykj5orx/v se loop is perpendicular to the magnetic field?

  A circular loop of wire of crolj05 :p,fj+ou1ksabe05o erb ss-sectional 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 o3z+ou;h i-gu )ezg.xi,cmm3i f 2.0 A is in a magnetic field of 3.5 T. The looz3u)i,im.gox h3;- gczie+ u mp 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 fh ky0 ;-/aw;j n2ppqhin a uniform magnetic field of 0.30 T. The current in the loow yqfnp;pa0h j;k h-2/p 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 radius 0.nd e9dt6w5*k/cp- tpg 50 m is in a uniform magnetic field of 0.30 T. The current in the loop is 2.0t dgt-6pn5wk pd*c/9e A. What is the magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop omvlr c9qxxy *p/yyfib2/ v57 )f 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 nf3 x jpsw: nfldo-;/)(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 velocityl0nz x1qj44 4/i xxfs0s /zfkt $6.9 \times 10^6 \; m/s$ 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 potentiaoi ,2al vo0+3xxr,oq, mepml ;s hfr6g(2 svi.l of 1.0 kV and then moves into a magnetic field of 0.040 T. What is the radius of th,,3hm(x;+sif rr.x ai2 ps, eo02og6lvv loq me proton's resulting orbit?

  A proton is accelerated from rest through 500 V. It e .tgt(0.6olyuk2 lrn6k kqbz:af1p1p nters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Determine the radius o:. k06pu1a lf. pk6tryknzg 2t(qbl1 of the path it follows.

  A beam of electrons is accelerated through a poteno6 /-pxwtcx 4,,bxh3 r. onjon,je a6otial difference of 10 kV before entering a velocity selectorcxob,,ae6/w .nx p j-4oon, h63to xjr. 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?