If the north poles of two bar magnets are broughtkvqrlpj35cdvf; 65.o close to each other, the magnets .6ok5ljc v 5fdvr;pq3will

  If the south pole of one bar magnet is brought near the north pole of -sllxc/h) p3 wa second bar magnet, the two magnetspwxhl3l-c/)s will

  If a bar magnet is divided into two equ/jla;i -qsrw3i g(c ,val pieces,

  The Earth's geographic 8qv,kgh(o 3dxxhkt 4u-k . xwd. o2vt.North Pole is magnetically a

  The south pole of a magn6u5 k; 5bu4dhni9veg aet points toward the Earth's

  An electric current pr+v4pa lts6vj x84; as.liim3 yoduces

  Which of the following is cor3sd)yga4* - vx0pcdvi rect?

  A vertical wire carries a current straight down. al2 0k ymfk.g4To the east of this wire, the magnetic field alfy. kg02m4kpoints

  A horizontal wire carries a cu nw7pko6zm3 x4rrent straight toward you. From your point of view, the magnetic fk4 7n63zm opxwield caused by this current

  A current carrying loop of wire lies flat on a table tn,dr8t: md:1x r;orz jop. 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 thd::t81od;jmr,rzx r ne loop? The magnetic field

  A current carrying circular loop *xb40y3mrr bvd ,u 1buof 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 fir34bu1mdry 0x b ,*ubveld caused by this current, inside the loop? The magnetic field

  The SI unit of magnetu)p 6gx2mv 5kra/az w5bt9my4ic field is the

  1 T is equivalent togjui)jcu.y6 xny 4u07

  The direction of the force on a current-carrying wire in a magnetic fiegku(7)ixo js z6hv vvv6+) ys9ld is described by wh 6xv6skh)zjo7+9vs(ig v) yu vich of the following?

  The force on a current-carrying wgpn l d s3t (sz+ot19jbjn:9s3 bt0hb2ire in a magnetic field is the strongest when

  The force on a current-carrying wire in a magnetic field is equalh7cmd0 5 t6vzg to zero when

  A vertical wire carries a current straight up in a region where the magnetic fiw :kkp8*xc -uceld vector points due north. What is the direction of the resultixu*c-:k 8pck wng force on this current?

  A charged particle moves and experiences no magnetic force. From vzg pex9u,,sj )sw c20this we can con2g9pj )xsz0uvw,e,csclude that

  A charged particle moves with a constant speed through ahiz4li6vg e6 e/rl6 0d region where a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting ong i e/ levd0li6hr4z66 this particle will be maximum when the particle moves

  A charged particle moves across a const b+y-eml:t,hujm;l;l5;s v xdant magnetic field. The magnetic force on thv, : ;m-;exhjybtul;l+sml 5 dis particle

  A charged particle is injected into a uniform magnetic field such that itsqc320x-c5, dzwejj2vni (nvw velocity vector is perpendicular to the magnetic field vector. Ignoring the particle's weight, the particvcv w(0 -j 32edwj z5xn,ncqi2le will

  A charged particle is observed traveling in a circular patvqgz93 f.hrvpa*h ph :dop+/f m4.k o2h in a uniform magnetic field. If the particle had been traveling twice as fpkmgv.+h 4.vz:af3rqfd h oo9 2p/ *hpast, the radius of the circular path would be

  A particle carrying a cha)da; vkx2 vof4rge 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 hav4ov ;afvxd2k) e been

  At a particular instant, a)xeaonjf(bgro (iau /f nz);3- -de a;n electron moves eastward at speed V in a uniform magnetic field that is directed stfnfbe;o) a(--ana/ ; ei)gux zr (jdo3raight downward. The magnetic force that acts on it is

  An electron has an initial velocity to the south but is observp(i mhsox: 6reqi x 32+rzjk9:ed to curve upward as the result of a magnetic field. The direction of the 6q::(+ rke ripsih39mx ojx2z magnetic field is

  An electron moving along the +x axis enters a region where the nfsyf5uc/-p/u-.rfbd w m//q re is a uniform magnetic field in the +y direction. What isr/. -mud /uffqn // 5bwycpf-s 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 wire iy k s8;ixl4p:yf sjncc 7n0 *xmca-c)2s

  At double the distance from a long current-carrying wire, thsennh1 f:l z)b6wt 78ne strength of the mal bt1sef78)hz nnn6w: gnetic field produced by that wire decreases to

  Two long parallel wires ,ue.;- t tj0ecfg 2osutr w tv/b6m;e+placed side-by-side on a horizontal table carry identical size currents in opposite diretcou0/g;t je, 6tue .tfb ;rsw2v+m-ections. 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 horizontcnu(1t:)k/sf sx / ecve1 3 1lsbwqgv4al table carry identical current straight toward you. From your point of view, the magnetic kbq1vvs) w ng//(: 3sxu1ef4c1e ltcs field at the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnit 9lwjyp bp8i*a:i ;ym5ude of the force between the wires is F. The current in each wire is n85;pa iy ilp: yb*j9wmow doubled. What is the magnitude of the new force between the two wires?

  A long straight wire carries current toward the east. A protonkq/go92pzam +um mrui1y1, -w moves toward the east alongside and just south quyi/ko9 mp1+2 um,1g w r-amzof the wire. What is the direction of the force on the proton?

  A wire lying in the plane of to;1sg-e.s u 8eyl8 +k- xtgexjhe page carries a current toward the bottom of the page. What is the direction of the magnetic force it produces on an j; ssoyke- 1xxt-g8ul+e .8eg electron that is moving perpendicularly toward the wire, also in the plane of the page, from your right?

  Two long parallel wires are pla a/f;ibu(zlaauec9m z74gl 43ced side-by-side on a horizontal table. If the wires carry current in the4aeac;z(4 f 3b7aim l9zgl /uu same direction,

  Two long parallel wires ar 7)flo4 j5leere placed side-by-side on a horizontal table. If the wires car4jerll o5 e7)fry current in opposite directions,

  Consider two current-carrying circular l1af(crn/ o t2eoops. Both are 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 field at the center of the smaller 1(fnaec 2rt/o loop, the magnetic field at the center of the larger loop is

  Consider two current-carrying circular loops. Both are made from one strand fr5pgvl8naw)o4x 0 34ir:cyt of wire and both car 5ti)4fr:rg4vy 3w o 8np0claxry 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 larger loop is

  The maximum torque on a current carrying loop occurs when therhaq wc;k:h3l+g a8h4a c;rn: angle between the loop's magnetic moment a+ga3alcw: an; :h qkrr84;chh nd the magnetic field vector is

  When placed askew in a magnetic field, a :ilz)0wbaf4j jafpvi-3z k9 5 current carrying loop that is free to rotate in any direction will experience a torque until ibfk 9jwf jizpal)a:-534i 0zvts magnetic moment vector

  What fundamental fact underlimty ( dg xu5zs5+5u6kfes the operation of essentially all electric motors? uuzyg6+ (ktd55mxf5s

  A circular wire loop lies in a horizontal plane o:qvukh0te6(c vc3wq6 bt5a*xn 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 the mk 3x:a0cve htq(5 *tc w6v6qubagnetic field?

  In a mass spectrometer a particle of mass m and char0eo wo*0hg/ce 2(spjrge 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 t2wcoo0ehr jps(0*eg/ he 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 crossed dexayx-5 yx7 /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. /yad7x5yxx-e 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 carryina;zz+sw 1 2vhc cm:jp* cg.oi/g a current of 0.60 A is oriented parallel to a uniform magn/cs*; wicpa:v.j+g2zho c 1 mzetic field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a direauvnojb06 )r,b ,rsl9ction 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 n zr7/w ;6phgywire carrying 5.0 A when it is placed in a magnetic field ofy;/ rw 6h7gnzp 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 l6v9k(vzfwzc1jpw ht) 8w d.s5ec+i o -ong 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 forcee1cw9+vh sd8jvwf(iktoz-5z.p c) 6w to cancel the weight of the rod?

  A stationary proton is in a uniform magnetic x9ldhg* hiafcuj)5k 1. yn)j9field of 0.20 T. What is the magnitude ox k9cjlg h.j*)fi91d)uy5 h naf 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 speedj;tg cn6p:p .d 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), n:8nuy 7,ykpk ro8j+bmjcm 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 no tf :lqwqz 99:4p6luhuo1c7wqrth 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 witfus0x rf /zo37h 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 magnetic force of the electron.

  An electron moves with a speed ofqh:)jlw;yezq2eduax4k kgwa /96 o /7 $8.0 \times 10^6 \; m/s$ 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 speedt+ si qlrta43 k:i55ey of $3.0 \times 10^6 \; m/s$ 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 i3m+63l o x-pm+ixkq6qkye:t A. What is the magnitude of the magnetic field at a distance of 0.15 m from the wi6x-y e3i6kqk3qopm +m:l+tx ire?

  A high power line carrying 1000 A gener+(.6flg c9c bkp5l-t urwa b/oates what magnetic field at the ground, 10 m aat+ c lou6.b/ r-fgpc5(l9 bwkway?

  How much current must flo(41 ky 8xlq+vpsqpo)h)lv -d bw 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 is the m2 0ud (gv+v7b1ofgdnmagnitude of the magnetic field due to the wnbfu(1d7dgv02o + vgmire equal to the strength of the Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currilv 9r)29y :v,(fw+fksiw iirents of 10 A in opposite directions. They are separatedy :)sirkfw(lf ,9ivi9 +rvw2i 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 cm from the other?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite dirhhn9 65 k l.vjxnxzt3;ections. The wires are separated by 0.20 m. What is the magneticl jvz9h; xtxn.n 653hk field midway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A i2jun)km 5x+win opposite directions. The wires are separated by 0.20 m. At what pomxn )u 5iwk+2jint between the two wires are the contributions from the two wires the same?

  Four long parallel wires each cfqx)( :d (nvxt 0n5j5xh+pv uoarry 2.0 A in the same direction. They are parallel to the zp fh d0x+5tuj( vn(xvo:5n)x q-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 experience due to the other wires?

  Two long parallel wires carry currents of 5.0 A and 8.ig rnfu d59iv9 .t()dn0xutm, 0 A in the opposite direction. The wires are separated by 0.30 m. Find the magnetic fort 0() nrgum5xi9utd.vn,i9f dce per unit length between the two wires.

  What is the magnetic field at t30t l.snnepj 4he center of a circular loop of wire of radius 4.0 cm when a current of 2.0 A flows in the wire?4pn3s.nlet0 j

  A solenoid 20 cm long is wound with 5000 turns of wire. Wh o,nc;w5cggccf1 / qo6)cs3pyat magnetic field is produced 6cc gc5qp;cgwc1 yno/),fs3oat the center of the solenoid when a current of 10 A flows?

  A solenoid with 500 turn2( tgrotbl7:e i;qvf1s is 0.10 m long and carries a current of 4.0 A. What strength of magnetic fiel : t l7ft(2gbovq1ie;rd will it have at its center?

  How much current must pass thro f-f-r/4zqervugh a 400 turn coil 4.0 cm long to generate a 1.0-T magnetic field ar 4fze/r --fvqt the center?

  How many turns should a 10-cm long solenoid have if i c/cv g:8isp+ ehfm+a,g4c:: wxofr;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 tuv5yt ix s ivs94q65/eqrns that carries 6.0 A if iyxsqitq/ 54vv i59s6ets dimensions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic field of 0v*b0a1 6ov)i*dx fc df.30 T. The current in the loop is 2.0 A. What is the mabi1af c 6)0d*f*xvvo dgnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sectionaw d/ekg+ fqzehx +07b/l 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 of 2.0 A is in a magnetic jvv 9xwhve3 2e6ki zg 54es2q2field of 3.5 T. The loop has an arez6e 2429e gvvi e3x2kwq j5svha 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 field7hwq 9z0n:;2+ah r jr4br paho of 0.30 T. The current in the loop is 2.0 A. What7h0 pj;o9rh 4 qz+rw:2nhaarb is the magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular loop of wire of radius 0x f.v;(le gap(.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 parallexfe la.p(g;( vl to the magnetic field?

  A circular wire loop of l3 krb,eslok8 no +6h6area $0.25 \; m^{2}$ 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 partizx2 ,93kwm9ijjzu,ebuc( o w9cle (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 wit2y3a4 p 65zblq s*gc a 4utjtg3,+vtokh 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 potential of 1.0 kV and then moves into a magt55a 0bxak) yn 42jqjgnetic field of 0.040 T. What iskj45ajgy 2 5n)at0qbx the radius of the proton's resulting orbit?

  A proton is accelerated fhdev/ cs,sonb0v1 x,1 rom rest through 500 V. It enters a magnetic field of 0.30 T oriented perpenvd0bov c, /n1h,s1xesdicular to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potential difference of 10s;/ q8n:q jpwbfm5kp6 kV before entering a velocity 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 undq 865m b:wjqpp/f;ksn eflected?