If the north poles of two bar magnets are brought close to each other, tiw15h 9v4wwgzhe magnets w1 hwgz w4w5vi9ill

  If the south pole of one bar magnet is brought near the north pole of a secon,mcc bhev0y2 tf8.rz5d bar magnet, the two m. ervh ymc05c,ztbf 82agnets will

  If a bar magnet is divided into tw59klx99v4u jf mcj7 lfo equal pieces,

  The Earth's geographic North Pole is mag9f 7m*ls whrb-hd axs1g;i1gr6w **b nnetically a

  The south pole of a magnet points toward the i8nnv5 fv/pk d:9j7y hEarth's

  An electric current product.o -g zkh7saw 2t1h,:yf8jt pes

  Which of the following y0stq)g-c5u-l,we9sc ju9dl 6n w7ylis correct?

  A vertical wire carries a current straight dowjvr 6y hrskyh 1x bd7byn4:)0-n. To the east of this wire, the magnetic field : x1bvrjdrk6 ys70-)y4hh ybnpoints

  A horizontal wire carries a current straight toward you. From your point of vie h;p0ja2-efa8*, jyr xtsoipv8j *lv+w, the magnetic field caused by thi2r t;+8jf8jahi0,-v eps *x*a jpy lvos current

  A current carrying loop of wire lies flat x1o k*w f(ksdj4y f).hxm8i 6eon 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 68d1hof)i.xjskm(y*4 w xefk this current, outside the loop? The magnetic field

  A current carrying circular loop of wire lies flat on a table t8, d+a5ew .noyk4 hyjjop. 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?a4w 5+8.hjyo jky,nde The magnetic field

  The SI unit of magnetic fyw + ;rl/ol(urs k/ot;ield is the

  1 T is equivalent toq.uj(.)m ap-tg p2mr.tyek 1y

  The direction of the force on8dplml)ji 3t 3 a current-carrying wire in a magnetic field is described by )li dp8m3 jl3twhich of the following?

  The force on a current-carry3kr z3fnz+a: eing wire in a magnetic field is the strongest when

  The force on a current-carrying wgj*cer7:6y dvc 6y*re*/f ijtaa9h,o ire in a magnetic field is equal to zero when

  A vertical wire carries a currpox9vw8( u /azent straight up in a region where the magnetic field vector points due north. What is the direction of the resultingz/a(w x9opu8 v force on this current?

  A charged particle moves and experiences no magnet s8zo wp-/ju9wu n,1 yvld0i8ric force. From this we can cody-,w1p/i0j 9zwoul n 8v8surnclude that

  A charged particle moves wi:, gvtg: rq(fnth a constant speed through a region where a uniform magnetic field is present. If the magnetic field points straight upward, the maggnfr,:qgv :(tnetic force acting on this particle will be maximum when the particle moves

  A charged particle mov3cg: 5ilyek: des across a constant magnetic field. The magnetic force on 5: kegcl 3:diythis particle

  A charged particle is injected into a uniform magnetic field such than):dnn ul6xfnk1 8mz)t its velocity vector is perpendicular to the magnetic field vector. Ignoring the particlfn1m6 )zn :)luxk8nnde's weight, the particle will

  A charged particle is observed traveling in a circular paq):plo 7hw+opth in a uniform magnetic field. If th: po+q7ohlw )pe particle had been traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e travels in a circular p-c sqh0drwy 2yq-0hm5ath in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of the circular p0c2qw-ydr-hymqs h5 0ath would have been

  At a particular instant, an j7ga)s-eu2m l.yohj 4 electron moves eastward at speed V in a uniform magnetic field that is directed straight downward. The mag)yg4.mj o 7 uj2hase-lnetic force that acts on it is

  An electron has an initial velocity to the south but is tyqw -ahud z3:t8:bl*observed to curve upward as the result ofbyd z8qltw:t3 : hau*- a magnetic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a ro/xek;+c 5krregion where there is a uniform magnetic field in the +y direction. What isrk 5kr ;+ocex/ 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 a long straight current-carrying wivpq -p6xg6 e ix;4b)vqre is

  At double the distance from a long current-carrying wirc24n9rwt 2h6-k hl1q29t9r po vlvethe, the strength of the magnetic field prhck 29 rw-vp69 l1rq4eh 92tlh2nttvooduced by that wire decreases to

  Two long parallel wires placed side-by-side on a horizontal table carry id+9i xd6at7 ubf*yuacska951wentical size currents in opposite directions. The wire on your right carries current toward you, anda f51s k9x9iwad u+*7c tb6yua 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 icj 0 g esbo4aor(6 h,9s.6xzumdentical current straight toward you. From your point of view, the magnetic field at the point exactly between the two s0j xg4z,6(m eoaoc. u9r6shbwires

  Two long parallel wires carry equal currents. The magn:)dicj;h8pc 0 d gzu(titude of the force between ) 0gciduj(h;:zt d pc8the wires is F. The current in each wire is now doubled. What is the magnitude of the new force between the two wires?

  A long straight wire carries current toward the eas/d3uwekq6. nat. A proton moves toward the east alongside and just south of the wire. Wkn3 q.ud/ 6aewhat is the direction of the force on the proton?

  A wire lying in the plane of the pa6bem qd ksnz/w-u6) 3t2o5, auuhcjl-ge 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 the plane ofm23znl-a/6ej uwu ckbd, s-6u t)hq5o the page, from your right?

  Two long parallel wires are placed side-by-side on a hori+t8w(h.ej1iz4 iqf mq zontal table. If the wires carry current in the samezm (ehq1fi4 .+qt 8iwj direction,

  Two long parallel wires are placed side-by-side on a horizontal table. If the w-hcgs4;8vv0rxhz dpt( +u4ac ires carry current in opposite dir;4+0 xath8 hpcdvur4c v-zsg (ections,

  Consider two current-carrying circular loops. Both are made from f rt4qq7.v)gvu iipd*wk0u 2 6one strand of wire and both carry the.4 *wqgq fp2v 6tuu7d ii0k)rv same current, but one has twice the radius 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 ohc unt:e7w (a+f 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, ua: (7tech+nw the magnetic moment of the larger loop is

  The maximum torque on a current carrying loop occurs when the angle b). *sl:tddbjl.e7am t etween the loop's magnetic m*el) .ddbs.7jtalt : moment and the magnetic field vector is

  When placed askew in a magnetic field, a current carrying loop that is free,6pqd hwibn56u y)j +i to rotate in any direction will experience a torque until its magnetic moment vector6i,5wi) pdyunbh6j+ q

  What fundamental fact underlies the operation o,-k.,ne fjbs gf essentially all electric motorssgf,n j bk.e,-?

  A circular wire loop lies in a horizontal plane on4cv:idje j)di. vj().+dut bc 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 horizvc(u+4c i:i.bdej))vd.j d jtontal. 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 v1 i/f1f9h ehcoq97iia 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-cif/ihc 11 ifo e9iqh79vrcular path 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 pcz* vo x+.vd04mwc,gov*u m, karticle passing 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 v4ovdk wcgm*mz.+, cov,u 0x*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 parallel to a uniform* ja81xpmcx4 l magn j*1ax8pmcl x4etic field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a dir.5gv:slw 98s hqg(qcwection 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 ayl) :x4fj5yg1 c(uoowhen it is placed in a magnetic fio u:5x(fl1 oyyja4cg )eld 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 magneud dtv.x2lg7w k;l 90etic field of 0.10 T. What minimum current in the rod is nee . el7 lgux9kt;vwd0d2ded in order for the magnetic force to cancel the weight of the rod?

  A stationary proton is in a uniform magnetic field of 0.20 T.h/gd1 o ll4esd.mg+o 3;rh8bp What is the magnitude of the magn1 ldohsm g;ph83 lobd.4g/ +eretic 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 l 5yi.n3n;k. t95a,-z9afkjvaemwrd 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 spqpc8eecz p nf8jb/v.p-g:9n ;eed 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 speed wwk3 v22t7ttd $4.0 \times 10^5 \; m/s$ 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 speev-kfi is:-cogj7 z:uzf9+uc 5d 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 speed-pcc7 zf n irw0(2f.kb 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 ojwhz1q5hs+i-h tj.gg2ol0 ,9fo(3adlk; hrc 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 A. W 5vqzeyh/ 8fqt74rr6shat is the magnitude of the magnetic field yfrh6 8v4s5qe z/ trq7at a distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates in+vh ovn;g ;/ybn;.;o -cgzz what magnetic field at the ground, 10 m awa;hczg; .g ;n+-oo z bvvy;n/niy?

  How much current must flowrh0 l epjct4/6 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 5i7/8j1lt7hp5jjzjj4k.2oc6 mdgz d w :v jb7n.0 A is the magnitude of the magnetic field due to the wire equal to the strength of the Earth's magnetiozgdjj5 zb:j86cd72 t 7 4mj7p /wn1l j.vhijkc field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents of 10 A in opposite. xlrv3o:by1a directions. They are separated by 40 cm. What is the magnetic field in the plane of the wiabyrl v:3ox 1.res at a point that is 20 cm from one wire and 60 cm from the other?

  Two long parallel wires carry currents of 20 (.gb z8 :6hujjg qwm38hg*qzlA and 5.0 A in opposite directions. The wires are separated by 0h g8b hwzmu:jqq j6zg.(*8l3g.20 m. What is the magnetic field midway between the two wires?

  Two long parallel wires carry currents of 20 A and .mxgd4x d)innr(u lkxrao9860: d1fh5.0 A in opposite directions. The wires are separated by 0.20 m. At what point between the two wires are the contributions8:l 9r.rx xnfkdho( iax6dg0)um1 4nd from the two wires the same?

  Four long parallel wires each carry 2.0 A in the sao tj9 bqb5s(l7me 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-j 9(btq75b lsoy plane. What magnetic field does one of the wires experience due to the other wires?

  Two long parallel wires carry currenth p6xyuq/bv.7 5: blbjh1m/vws of 5.0 A and 8.0 A in the opposite direction. The wb6.bwbv 5/xq7lp :yh1m/ vhujires are separated by 0.30 m. Find the magnetic force per unit length between the two wires.

  What is the magnetic field at the center of a circular aa/i.sw dv :3ploop of wire of radius 4.0 cm when a curr:adiv a. /pws3ent of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wirj9/o07 pib)nnmu*c1s7:hp q wtj.zure. What magnetic field is produced at the center of th w it. u/r: nmjbq0jp7o) u*h1pn79scze solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carr:e2z kj fo6scphv6)h(ies a current of 4.0 A. What strength of magnetic fieldevzh6o2k6jch ) f(s: p will it have at its center?

  How much current must pass through a 400 turn coil 4.0 cm long to generzq im e9* b0:-gugmb.nate a 1.0-T magnetici.g megznqb0- m9*bu: field at the center?

  How many turns should 27prh*8gant cc43l hk a 10-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 of a rectangular loop of 120 turns that carries 6.0 *vs*-siu f1g5 ch juub/ dpw51A if ifs/p1jc-dsug ** b55uv u1hwits dimensions are 4.0 cm x 8.0 cm?

  A circular loop of wire obobzpk e: z-wz+c+(q: f radius 0.50 m is in a uniform magnetic field of 0.30 T:b :zbzzcko+w p+- e(q. The current 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-secte4: b2fpz 3;kokb ) (qaunn+tuional 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 carryin5e (xv0swu zf:g a current of 2.0 A is in a magnetic field of 3.5 T. The loop has an x:uwef s0v5 (zarea 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 rads:d0i2j fd 8tkius 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 thdjdk: s ti2f08e plane of the loop is parallel to the magnetic field?

  A circular loop of wire of radius 0.50 m is in a uniform mag48h fz ycff w;kz3g9juz,5r1o netic field of 0.30 T. The current in the loop is 2.0 A. What is the magnezgow4zh3f fj9 uf 5,yc8k; zr1tic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop of a96jybpqt1kb : 8;x-pa;ptvhnrea $0.25 \; m^{2}$ 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-char*rdzg6;exem u( ryxdy4 yg f/,5z u4-aged 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 v0xrs ;009wvtvss 4uhvelocity $6.9 \times 10^6 \; m/s$ 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 -j-ogv.ih f4o magnetic field of 0.040 T. What is the radius of the proton's resulti-.-ogohjfv4 ing orbit?

  A proton is accelerated from rest through 500 aolrz 3r c-3u7V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction o-cz 7u33rl arof motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potential difference of 10 y 9keo* (ef:hw1rlul5kV before entering a velocity selector. If the B-field of the vu1kwl95*roe:y e f l(helocity selector has a value of 0.010 T, what value of the E-field is required if the particles are to be undeflected?