If the north poles of two b 6f8h zx;z dgbnf:5i6ear magnets are brought close to each other, the magnets :6dn 8xfez 6zfih;bg 5will

  If the south pole ofm;pt -3agp 0p5ga fw(b one bar magnet is brought near the north pole of a second bar magnet, the two magnea0bgp(g; t apwfp5- 3mts will

  If a bar magnet is divided into two equal pieces,ej3 lc) -4xlhf

  The Earth's geographic Nort1wy)yort05mz rt3/h t ir*r;th Pole is magnetically a

  The south pole of a magvz6budg,j j;doof2z7 hp(z-ml 3, mt) net points toward the Earth's

  An electric current producgw*ah2 x daz- :cwq/cb,,p .xf l)*xlces

  Which of the following is correct)+lhph18kv*qq ym23 ci) j qel?

  A vertical wire carries a current straight down. To the east of this wir k7/0ij h agd/ma8fe)le, the magnet87f)/jil0gamdh kea/ ic field points

  A horizontal wire carries a current straight toward jcqh7m*lf j32srw,6 g3 w rm/vyou. From your point of view, the magnetic fieldfcm 3 3*jj2wgq/svw6h,m rrl7 caused by this current

  A current carrying loop of wire lies flat on a table top. When viewed frq hha+s6z-/ t67)y 3mcqy(*laruq1vq mszz,oom above, the current moves around the loop in a counterclockwise sense. What is 6 m3q/ +z(qqhzqsrm 6 ltchao us)a7yzy ,-1*vthe direction of the magnetic field caused by this current, outside the loop? The magnetic field

  A current carrying circular loop of wire zmr.cdphwb+:wj7:1 q- ym6o awbt 7m-ebz92mlies flat on a table top. When viewed from above, the currrc- m62zy bpameq1bww bd 7wm7ho m:z.j-+t:9 ent moves around the loop in a counterclockwise sense. What is the direction of the magnetic field caused by this current, inside the loop? The magnetic field

  The SI unit of magnetic field is th hh+kw/do5 , m67a j4hqtk9lkfe

  1 T is equivalent toc -9k+bxabn2hkaq76swv 349vzg+ jvi

  The direction of the force on a current-carrying wire in a magxj-rrc8 qsao :0 *dro.netic field is described by which of the*r sorojq-d0ar .x8:c following?

  The force on a current-carrying wire in a magnetic f 6ps p z0cr0k:ghno+b2ield is the strongest when

  The force on a current-carrying wire in a magnetic field is equal to :b; cpcw1jul w-s9b+ o;v ccy b.zd34jzero when

  A vertical wire carries a current straight up in a region where h0t6zrq+t *h4ffxks6 e.fjc bfwv, /2 the magnetic field vector points due north. What is the direction of the resulting64f t2ftf 0zch*kw/hv6fsebrj q+. x, force on this current?

  A charged particle moves and experiences no magnetic qle:n2.a cs; lforce. From this we can concels; .aln 2:qclude that

  A charged particle moves with a const zh x9d95gwcuj m3z5;sant speed through a region where a uniform magneti zz5 jws39hugdmc95x; c field 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 moves across a constant magnetjhn5bz4id)-u .d/vnpy .0wimln ,jm (ic field. The magnetic force o. /5(0mi nhijd pb-nmydz) jnlu ,.wv4n this particle

  A charged particle is i6dme( p5x b wcgxy*et3pa0-4cnjected into a uniform magnetic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring the particle's weight, the pxegc4x wy -bad0 m3t5c(*6ep particle will

  A charged particle is observed traveling inrpo(vfib;.- 1 b+yhcg a circular path in a uniform magnetic field. If the particle had been traveling twice as faob( -f1crhyvi +b.g;pst, the radius of the circular path would be

  A particle carrying a(z9m4 qsy psm-8h)erd-/scgn charge of +e travels in a circular path in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of tns-d)zcsmphe 84 g ry9mq(/s- he circular path would have been

  At a particular instant, an electron moves eastx l0m10 kumzu8ol4f6x lro+rzf4r i.2ward at speed V in a uniform magne ukzomff lrr1486 l .z0u04x +2orlximtic field that is directed straight downward. The magnetic force that acts on it is

  An electron has an initial velocity to the south but is observ3b5jboh*se aty02n8h8o mz j;0 eke r7ed to curve upward as tob8e;m * ts07ry8h2 5e 3nj bhak0ozjehe result of a magnetic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a region where there m78j4nenzk,1zpkh hp rb)v0fw 3e2z2+dh2qdis a uniform magnetic field in the +y direction. What iszz40p mkfd7eh3kzq+r2hb ,2hn8j )p2ed1 wv n 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 wio sg 6:c *,yrnnr pc;3e5 mv)ya7vtxz5re is

  At double the distance from a long current-carrying wire, the stren)q; b dxsk1hp+phl f-9gth of the magnetic field produced f;+ h) p9-pqbdskh1 lxby that wire decreases to

  Two long parallel wires placed side-by-side- nq v(9kxcs:m9k rqhg-ag. k/ on a horizontal table carry identical size currents in opposite directions. The wire on your right carries current toward you, and the wire okk csakr:/m(-9-g 9qhg .qxv nn 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 plac cz+nj;lqf1o .i/77zw (pkehued side-by-side on a horizontal table carry identical current straight toward you. From your point of view, the magnetic field at the point exactly be1 w(fzo/7pu nhl7z+j;ciq .ketween the two wires

  Two long parallel wires carry equal currents. The magnitude of th kgp(;(8sndpzzxgjw e(+m6z3 e force between the wires is F. The current in each wire is now doup m(dxgg+3zwejzks8;z n p6(( bled. What is the magnitude of the new force between the two wires?

  A long straight wire carrifay 5mzv yb7p s/d 8ogr2o91:pes current toward the east. A proton moves toward the east alongside and jup :ro 92ybomf8z/ asp7gyd51 vst south of the wire. What is the direction of the force on the proton?

  A wire lying in the plane of thd/ qxatumt .-1e 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 movi aqxt.u1 tm-d/ng perpendicularly toward the wire, also in the plane of the page, from your right?

  Two long parallel wires ae3zd 5f(h3c8b .mbwwy re placed side-by-side on a horizontal table. If the wires carry curren5hwe.b8y d33 bw (cmzft in the same direction,

  Two long parallel wires are placed side-by-side on a s7vqd5t)b8t lo bzcyn))z 8 q)horizontal table. If the wires carry current in opposzvq))lt8yoscn)b qz5bd 8)7t ite directions,

  Consider two current-carrying circu7nxws 8k / r7b(6ckwthx xrnw;hjfa 9/3,cgq:lar loops. 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 small 6tx:,8a wxk ( cr7/ nwrhg/nwk7qfb93js;xcher loop, the magnetic field at the center of the larger loop is

  Consider two current-carrying circular loops. Both are lvel-e1ipg+g3(dpz dt -;if)+rxie 1 made from one strand of wire and both carry the same current, but one has twice the radius of th ig-vdz 1r+i+p3 ifxllp (-;1eegt)ede 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 the angle bet8 b wph00 +gzx(8elkw0l 6hi+xke((cokv8z neween the loop's magnetic moment and the magnetic field vectorngw8e kwo88c 6+v0 (0hp( zxlz ie0ke(bxk +lh is

  When placed askew in a magnetic field, a current carrying loop that iu. uj)a7zk( fes free to rotate in any direction will experience a tou(zk )ea7uj.frque until its magnetic moment vector

  What fundamental fact underlies the operatiodar06 jjzf)k c7le4 4dfng/+yn of essentially all electric motors? e )6 4kyg7f+r 0j/fd4jlcnadz

  A circular wire loop lies in a horizohz..rpn21t( zuy hj.f(2z m lz5sd t1rntal 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 tabn2 ts1z5r. yfj lz2thr.mzzdp( u.h1(le because of the torque caused by the currents interaction with the magnetic field?

  In a mass spectrometer a particle of mass m and charge q is accelerated throufm2vy-8t neg 1 )0ay jc7lije+gh 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 the mass of the p m-an+fevyjt 2 g8e07lc)i1 yjarticle in terms of B, q, V, and R.

  A velocity selector consists of a charged particle passing through+g po:gha8;h6 jlv6h c crossed 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 velocity selector, the particles move toward the east, and the magnetic field is directed to the north. What direction should the electric fieldhap;lh8h: v j+gog 66c point?

  A 2.0-m wire carrying a current of 0.60 2 088eycizjtk :bqh2rA is oriented parallel to a uniform magneti z:j82cr b2q8ihekt 0yc field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a direction of j, q rbsp4b, -zashlx4h (1sf2$30^{\circ}$ 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 str7s zqgjgt(o8rmb.a ;5aight wire carrying 5.0 A when it is placed in a magnetic field of 0.020 T? The wire makesorj(5m8stag zq 7b g;. 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 75btkbmd ia70hs -zc/a magnetic field of 0.10 T. What minimum current in the rod is needed in order for the magnetic fkb7/sa0 cmd7hit b5z-orce to cancel the weight of the rod?

  A stationary proton is in a uniform magd3o( l rblc78x r vrha2)*gu,unetic field of 0.20 T. What is the magnitude of t rr(b8 l,h) xavod3ul c*r7ug2he 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*(,g* ifzf 890g wyua mrxdwl2 speed 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 uvz; vsl-(dm ++ldzg9 $5.0 \times 10^7 \; m/s$ 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 xp+5 7mcds6-fhqz. twspeed $4.0 \times 10^5 \; m/s$ 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,tw7 i3s /vdty 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 wita-+1g w n+jfbxp dob10h 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 o8 (uy *kdtm)gnf $3.0 \times 10^6 \; m/s$ 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. What is the5y:stzd0hiqc2q* b41p u d f+h magnitude of the magnetic field at a distance of 0.1d uiy5+cp1df : q4*qh0b2shtz5 m from the wire?

  A high power line carrying 1000 A generates what m* .mznq rx+j7*pns ,ji*vj4s,:n qt bvagnetic field at the ground, 10 m azqv* ,sqn:*t p .m7+sjb4*nn, vjxjir way?

  How much current must k0*heknv tl*)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 isiv1gq 9p:t+y;1m; vzi r hxqf1 the magnitude of the magnetic field due to the wire equal to the strength of the Earth's magnetic fizvfi 9q gv:h1 im+t1 pxr1;y;qeld of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents of 10 A in opposite dirlijpr30/yld,) hil x0):qky pections. They are separated by:,0 j)l p d/)pqylir3i0kxlhy 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 win aa,vohqef f60w:m icfc oo2442(1z cres carry currents of 20 A and 5.0 A in opposite directions. The wires are 6zfa4 ,o :1oec fm2 q n0accfiw24h(ovseparated by 0.20 m. What is the magnetic field midway between the two wires?

  Two long parallel wires carry vu 2f- 88 feq;xhm /.ma,xzayjcurrents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. At what point between the two wires are the contributions frou8ehvma m-; ,/x 8zaq fj2f.xym the two wires the same?

  Four long parallel wires each carry tfe+u eqd s/11htmr(3 2.0 A in the same direction. They are parallel to the z-axis, and they pass through the corners o+ r(ed1thut /3fe1s mqf 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 wiren:)ux 6cocd v*6/x dtbs carry currents of 5.0 A and 8.0 A in the opposite direction. The wires are sepaunxd bccdx v6o)6:* /trated 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 loop of wire of radius 4.d njs;*0.5hi oc nush gb( /*4nbbnf/m0 cm when a current of 2.0j5 b/0 d.bonhmss/gi4*c( f nubhnn*; A flows in the wire?

  A solenoid 20 cm long is wound with 500k 2kewgkhr6+c c, ) 3hmj8i4kc0 turns of wire. What magnetic field is produced at the center of the solenoid when a curre2ch+kkcwrj 46km i3 e,kh8) cgnt of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carries a e5fjwd bc;k ycn57t5 1current of 4.0 A. What strength of magnetic field will it have at its ce cn;5je tfb1wk75 cyd5nter?

  How much current must pass through a 400 turll hbzc x90idf-ojz39/xb1(on coil 4.0 cm long to generate a 1.0-T magneti o xz9(0ix1oj/bb- lfc ld9h3zc field at the center?

  How many turns should a 10-cm long solenoid have id57hp4od-fsrzk ;ky/t4 m77rrm bq/bf 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 tu07o:(vg aayo vrns that carries 6.0 A if its dimensions are 4.0 cm og(:vaoa0 7v yx 8.0 cm?

  A circular loop of wire of radius 0.50 m is i kr9x/m/ 5 jbofo59 mrvob4d(vn a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. What is the magne kx 549m5 (jdr/r ofmoovbvb9/tic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sectxypx117- mdg2 + ;1twerfdy juional 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 abzwv 04bt,/ vn magnetic field of 3.5 T. The loop has an area, zvtbw/bn40v 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 6m0f8b; 7lrvv8gf:ler)4m1 vr s+zmu zjq *yzfield 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 parer:slr)418u;f*gvr0z f6 lbj 8my z7v zq+mvmallel to the magnetic field?

  A circular loop of wire of radius 0.50 m p,dv) zlxyv v xa8oma.j:12c3 is in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic tor.m2z aco ,xxvyvdl31av) :j 8pque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop of +dn1 :edzzfm qbo5.a/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, w8+iu8gj.xf z)c ;n a1w0ye zd6e;olda single-charged 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 velocitybr:*9v 2; i8usx igywi $6.9 \times 10^6 \; m/s$ 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 thu*e8u-zoa b(v en moves into a magnetic field of 0.040 T. Whato 8z(auv*-ebu is the radius of the proton's resulting orbit?

  A proton is accelerated from rest through 500 V. It enteruz,0vj1l sifhj qwo,l;:+ys3s a magnetic field of 0.30 T oriented perps,+3 ;q o:0zjl,svhu1ywjfil endicular to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potential diu-k;b; v,bzt de1 q :w)7sftddfference of 10 kV before entering a velocity selector. If the B-field of the t;kuz:eb1t f7;, vd d-wqsdb)velocity selector has a value of 0.010 T, what value of the E-field is required if the particles are to be undeflected?