If the north poles of two bar magnets are brought close to each other, the magn3kt ,-h s6:u; qrojukvetks r;u3h uqk:,vjt-6os will

  If the south pole of one bar hh7 ju nh4)h*k39wb ;jq3i wdimagnet is brought near the north pole of a second badqi ;b3 kh*jhhwn9jhu)43i7wr magnet, the two magnets will

  If a bar magnet is divided into two equalc 5tky53 aw5af pieces,

  The Earth's geographic North Pole is magneticall i y)9smj 6(ihr*t f):hng5hyoy a

  The south pole of a magnet points to2g ir*4o:fnbpward the Earth's

  An electric current produce85 8iexqecs8 ds

  Which of the followingvax45.bo;nz1n nd0 b r is correct?

  A vertical wire carries5 c edvt6 h3e,kn1mm2sw86jha a current straight down. To the east of this wire, the magnetic j 6akts8,1nhdh 2cem6 3wem5vfield points

  A horizontal wire carriejkz;i 2iz4 t9rs a current straight toward you. From your point of view, the magnir2 z ;i9z4kjtetic field caused by this current

  A current carrying lo(, bq+fdsc ,rqm:*wmoop 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 direction of the magnetic field caused by this current, outside the loop? The magnet* dfc osb,(mw :+qmqr,ic field

  A current carrying circular loopz a8f a(wloiy-.teq 2: 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 direction of the magnetic field caused by this current, inside the loop? The (e8q.azw: tl-io 2y famagnetic field

  The SI unit of magnetic c+:bf8 yy.bfu field is the

  1 T is equivalent to,1f,,ig (c:bjgk)d nx)rng cu

  The direction of the force on auxkazi ;4xb24e + o4ry current-carrying wire in a magnetic field is described by whi2; +exu 4b 4oxy4rkziach of the following?

  The force on a current-carrying wire in a magnetic field is the strongest whe)gqf(v 4ywk-9 rhr 4yvus1y3gn

  The force on a current-carrying wire in a1in9:4nfrz4df, jjrv magnetic field is equal to zero when

  A vertical wire carries a current straight up in a region where the5m4 .qorjl. m6h d wxl6wt:+zf magnetic field vector points due north. What is the direction of the resulting force on this cur.54rmzt6j: mf h+o.wwxld q6lrent?

  A charged particle moves and experiences no magnetic force. From this we can c t sad.mr6f1q)oncl)1af sqmd t6.rude that

  A charged particle moves with a constant speed through a region wh8h3 ;p7c ucf- r8f8d,+4l ginssddlkbere a uniform magnetic field is present. If the magnetic field points straight upward,7unf4di3 8d8fh;rc pc+-,b8sglkd l s the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle movj)+mspaz tv0/b:w0lm p/i g: ces across a constant magnetic field. The magnetic force on this particle /cig0 ::lp0tms zwvapbj/)+ m

  A charged particle is injected into a unid7o /ld;cy(lnp dk9ho: :q2 jyform magnetic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring the particle's weight, the partid o/qo pn:y7(2;ddl: h yc9jlkcle will

  A charged particle is observed traveling in a ciroij t m3yl/zoj 1e(0*g(wo -x8i(hdiw cular path in a uniform magnetic field. If the particle had been traveling twice as fast, the radius of the circular d xe1(zy m j/-h0(8li i3ot* ojog(wiwpath would be

  A particle carrying a czcx1/ryohmn y ;sr7 3:harge of +e travels in a circular path in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of the circular path would hrr z7: x;/ysonhcy 3m1ave been

  At a particular instant, an ele: te/88ew3sd : qvtez6 )j vc2rs8ckp m3q.sdwctron moves eastward at speed V in a uniform magnetic field that is directed straight downward. The magnetqce:82w3md8s8 ep3rq/ tew vsvdtc6.j ):zsk ic force that acts on it is

  An electron has an initial velocity to the soutqp ,r0+m6htd3 gox8 rltnm (5dcf7ig8r0 ;ob gh but is observed to curve upward as the result of a magnetic field. Td0cl gggr7d(h3n5;6mro8q +b,t8 rxo0ft im phe direction of the magnetic field is

  An electron moving along the +x axis enters a region where there is a uni(d 0f9ojd o2q ic:0b sm0t9xrmform magnetic field in the +y direction. What is the direction of the magnetic force on the electron? (+x to right, +y up, 0cx(:b 9osm20o d j9tqrfi dm0and +z out of the page.)

  The magnetic field produced by awjzgy1k 2g;i+ps ax ku3c,8. l long straight current-carrying wire is

  At double the distance from a long )0ida/lu dzp) -*-3 enkioez rcurrent-carrying wire, the strength of the magnetic field produced by that wire decreasez-0)*niueo ip d)3rda-e zlk/s to

  Two long parallel wires placed side-by-side on a hor5h0)o:sevw,y f w/b ksizontal table carry identical size currents in opposite directions. The wire oyeb fh)/ws okvw :50,sn 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 horizontal table y*x36q tiv8zlz qz-.mcarry identical current straight toward you. q v*mz3zqzl8y6 x-it. From your point of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnituderyvsn7l8g 1w xqsy0iqr 08whe4 v.2b ) of the force between the wires is F. The current in each wire is now doubled. What is the magnitude of the new force between the two irvwe4ys1qn 0lhw) qbr .78 ygs08xv2wires?

  A long straight wire carries current towarabn0o lb .7zc;f ii4;od the east. A proton moves toward the east alongside and just souonoi bc;. zilb4f07a ;th of the wire. What is the direction of the force on the proton?

  A wire lying in the plane of the pagdr v7zt)hch h o-2kd ,p,xen d;is3)/qe 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 in the2)s/ z ,rxhci7t ,q hvod;3d ekpnh-d) plane of the page, from your right?

  Two long parallel wir fu9jt( jlvbp8v52c(q ekr ;y.es are placed side-by-side on a horizontal table. If the wires carry current in the same dpv8jlu;c .k rvf2j qt5y( 9(beirection,

  Two long parallel wires are plac-hvw v, a(*qmnim qtegn118ct o9-k1ced side-by-side on a horizontal table. If the wires carry current inmc *t1i,198wqmtag-v( noe q1-vh k cn opposite directions,

  Consider two current-carrying circular loops. Both ar2 h1cqyq uk)l:v6y2yzypl*gljl:iua )e;h. 0 e made from one strand of wire and both carry the same current, but one has twice the radia01g* yul yq)p v)6hlzy22:i q ;kl.l yceh:ujus 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 are made from one strand oiz2r0 u 9g)l3itr /tpof 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,p grtizo ) i/lu0932rt the magnetic moment of the larger loop is

  The maximum torque on a cur*a 3ljo l9f+8tv6fcs.f7h nq krent carrying loop occurs when the angle between the loop's q3s 9fj.h7fc8f+ llkvaon*6t magnetic moment and the magnetic field vector is

  When placed askew in a magnetic field, a current carrying loop that is free t kzd+f8kju9c-o rota+ucjzk9k8- f dte in any direction will experience a torque until its magnetic moment vector

  What fundamental fact undet.096xvrd a1pmro 1marlies the operation of essentially all electric motors?x9.d06 m1o1 ptmarrav

  A circular wire loop lies in a horizontal plane on a table and carries currentge bn gkk-;frwh)7z4p i )p9)wf ze-k5 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 z4w)pg9) 7pzh5k - f k-ke)wgeb ri;fntable because of the torque caused by the currents interaction with the magnetic field?

  In a mass spectrometer a particle okah+d0;hg; 4 ea/5 ce. obsdogf 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 for o+5;/a4gacdehe;b sdk.ohg0the mass of the particle in terms of B, q, V, and R.

  A velocity selector consists om+ ms2 yzcz3t;f a charged particle passing through crossed electric and magnetic fields. The forces exerted by these fields are in opposite directions, and only particles oz 3m2 ;cs+tzmyf 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 p. mdax6+aa v )u+hy)kharallel to a uniform magnetic fy)mk+u.6xa+ha a vh)dield of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 dca-v8byi2ksl3w ,3dev;mt5 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 wire carrying 5.0 A when it is placediu9yqf7m 8k3 p inum3q 9i7p8kfy a magnetic 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 m ycz8y0gps ;z/ oml2 7ulong 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 yc/ zlz0p gou;s7y2m 8the rod?

  A stationary proton isti.l j,mhf5/h in a uniform magnetic field of 0.20 T. What is the magnit5/ l mh,hijf.tude of 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 of x0av.)k isb gzjd.q81$5.0 \times 10^4 \; m/s$ 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 sp 4k(nos41;h-ou cic joeed 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 )o1 0vjaunzj xu i)/,xnorth 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 w;;b1jrsh4 3d0x dyx+ aepwy8a 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 b1nk81)o3 jpsq2vsea 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 oalnsw 74bku(9 f $3.0 \times 10^6 \; m/s$ 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 p2d: itz; i1j g)cx(jtA. What is the magnitude of the magnetic field at a distance of 0.1t;pzd1:cx)t 2jji gi(5 m from the wire?

  A high power line carrying 1000 kp 8.t5k gsry 01l:iicbu(8n+o refaz7mob9 +A generates what magnetic field at the ground, 10 m awaym5bz fc8y8isli :9(+tr0n1rekpo g7+.bkuoa ?

  How much current musta kgr32ga k;if/k :.sh flow 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 i(n6jxc4yw3sa l ye 2egf7 m)i.s the magnitude of the magnetic field due to the wire equal to the strength of t. gj f (elmecw 327xa6y)in4syhe Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents of 10 A in opposite directions. They are 1kjsb doiaexd uc87*d-p7z el- pxy) u:9.pv9 separated by 40 cm. What is the magnetic field in the plane of the wires at a pois7eu l -1 j)x x9p7*diuk :8avy-dz.e9 bpcodpnt 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 direcy:rz s+j.; dections. .r ejy+sc: ;zdThe wires are separated by 0.20 m. What is the magnetic field midway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite dir (u92 e ys7pycuaas2 ,lnyuh-(ections. The wires are separated by 0.20 m. At what point between the two wires are the contributions froylauy( 92cs ,na2us-y(7euhp m the two wires the same?

  Four long parallel wires each carry 2.0 A ine:xe3+yh efarbyu2a)d no2 2( the same direction. They are parallel to the z-axis, and they pass through the corners of a square o(b aorh euee y+ax) y223fn:2df 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 currhl )2 r+dkpnw4ents of 5.0 A and 8.0 A in the opposite direction. The wires are separated by 0.30 m. Find the m+lk) nr4 2phwdagnetic force per unit length between the two wires.

  What is the magnetic field /mjn gv-p*cs;at the center of a circular loop of wire of radius 4.0 cm when a current of 2cv-m;s*pjn g/.0 A flows in the wire?

  A solenoid 20 cm long is wound with 54e; 78rwpp- t;gkly nr000 turns of wire. What magnetic field is prodypw-per g4;8l7r ; ktnuced at the center of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 6vj sz2n;5n;nk/baky q:* hb r0.10 m long and carries a current of 4.0 A. What strength of magnetnbkr;6/ s khz5nn;*ajq bv:y2ic field will it have at its center?

  How much current must pass througmx/o m8m 1ydrxq. ,o+wh a 400 turn coil 4.0 cm long to generate a 1.0-T wq mr dxox8+yo1 /,mm.magnetic field at the center?

  How many turns should a 10-cm long s/cmhn . l(a:srbz)v/ oolenoid 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 c-rrg4ou11 gu karries 6.0 A if its dimgu ug1k-r4r1oensions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic hz6,wf5/v1 uiqyw*g n3o0bev field of 0.30 T. The cur/ zwnigh5vw0 y,q3ef ov*b1u6rent in the loop is 2.0 A. What is the magnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sectional arearyvhmw5jk.uzp6(9wp7 0) fag $0.12 \; m^{2}$ 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 magnetic field of 3.5 avb v8)7z*gzyhh;)atT. The loop has an 7t) vh a)g ayvb;*zhz8area 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 ok b/-v.ym up/e, t1(h. mfvkyyf 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 parallel tokyhyvyukmtpv1m /(b,.f /e- . the magnetic field?

  A circular loop of wire of radius 0.50 m is in a unifkwmi3hh,(u/yn02 q q aorm magnetic field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane of032a,kqqium(n/hyw h the loop is parallel to the magnetic field?

  A circular wire loop of xal (qo 5)td(t ;vkwq0area $0.25 \; m^{2}$ 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 (chargeb7dp):,n 40 lgc8 odqbs z(vku 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/3 5k:bqlpqtj t6n 3qc 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 u2 mipzbn73o0(2snfju7q;+h k gwc7n a potential of 1.0 kV and then moves into a magnetic field of 0.040 T. What is the radius of ;nfp 7 nc03wmk gu+bjh i 27qs27zun(othe proton's resulting orbit?

  A proton is accelerated from rest through 500 V. It envfexumdwh7t93 2l8 k,m,n q .nbmdmj6af u+.4ters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. mkm ua f 3jx 4,ev. 9m+,dnumh.t2fwd6nlb78q Determine the radius of the path it follows.

  A beam of electrons is a bj 6*ytylhk9(4bo(. ;ytd lzdccelerated through a potential difference of 10 kV before entering a velo bhtk (*zlto d d64b9j;.yyl(ycity 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?