If the north poles of two bar magnets are brought close to each other, the malc6r gwc- upp0*:qpbm dmyg 45-4 hcd+gnets wil-bw4dd+pq*mh4c6-g pl: pmrcuc0 5 gyl

  If the south pole of one bar magnet is brought near the north pole of a seco60)j 8ib(gkvtpy9btv5a-uiass7 q c ;nd bar magnet, the two magnets at7-5pjyqv)t(9ck ;bs 86gvau 0s iib will

  If a bar magnet is divided into two equal pier6 g7et;.(y bfn5q s8hbcmz ,mces,

  The Earth's geographic ct32 q m0(/uh .mitqk9i7ji2ucbn4 nkNorth Pole is magnetically a

  The south pole of a magnet poi+q* wx e+1ly;ix0y dw5kpf v;fnxc 2y)anzm1; nts toward the Earth's

  An electric current prodmr *;))o 9gv.zl( shdufgye 8quces

  Which of the following i8up n :z f,c7t;bj5sczs correct?

  A vertical wire carries a current straight down.zyc*4pyxa25 bm q8( sd To the east of this wire, the magnetic field pointsdym*5 a2(pq cb yzxs84

  A horizontal wire carries a current straight toward you. From your point of vivjd+im:tf8 dbp,xoa9xs mg7 -8 wp9,rew p fo:a xmivdr 7g d99stm,,+8x-jwp8b, the magnetic field caused by this current

  A current carrying loop of wire lies flat on a table top. When viewed fruhaqxrb55 s: a r/(-ijmj-5 dsom above, the current moves around the loop in a couaubrj (hs5mqsx/a-dj5-5 r i:nterclockwise sense. What is the direction of the magnetic field caused by this current, outside the loop? The magnetic field

  A current carrying circular loop oftgv-+x1h* y;xq;g 9qxhbhv r3fukg*9mx 8jw; 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? 1txuy m;w ; jh*gh9rvqx9xbgq; 8fx * -3+hvkgThe magnetic field

  The SI unit of magnet hh0n lu 09t,ec:ztw ehs731hric field is the

  1 T is equivalent to 5 u955kzers8utn lan8

  The direction of the force on a current-fp:pp,wd;-fb8x2q,z ,b hyg zcarrying wire in a magnetic field is described by which fbqby:px-, 2wf8 pdhpg z;,z,of the following?

  The force on a current-carrying wire in a magnetic fieldy0l xp+uewo45 7r q2anq:y1ik is the strongest when

  The force on a current-carrying wire in a u, yhyiyx9 dr8yu dpoc84-r*9magnetic field is equal to zero when

  A vertical wire carries a current straight up in a regi)dd alof2l2)k 1v* i)av7:lf qi7hzmyfioa* :on where the magnetic field vec 2miq di *a:)l)7vk) 7fooa2zfh: lvd*1i yalftor points due north. What is the direction of the resulting force on this current?

  A charged particle moves and experiences no magnetic force. From this we cuc45 8d i;dt-fie1cgq*5rqya s/:gq tan conclude rcg-d5eqi u1c i ;*f g/t58d:qaqsty4 that

  A charged particle moves with a constax6 z1 -rd/y/e*b1d ;sxyfar hpnt speed through a region where a uniform magnetic field is present.dypx;1 bea hzrrfd/xs*-6 1y/ 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 acros hjm;(;t6v t,iyz6 orts a constant magnetic field. The magnetic force on this part(thjym; tri66 z;,vo ticle

  A charged particle is injected into a uniform magne l 751whgqtqyk:o-czpl6) t r(tic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring the particle's weight, ttq g 71z-o (q: )ylcptl5whrk6he particle will

  A charged particle is observed traveling in a circular path in a uniform magneti4 , 65a:hvvyvoqlos. qc field. If the particle had been traveling twice as fast, the radius of the circular patq 4vs v oya,hovl:6q5.h would be

  A particle carrying a charge of +e travels in a circular path in a uniform mf- csc 0 o.l0 bph0z;mozs ncj:50mmn+agnetic field. If instead the particle carried a charge of +2e, the radiusjcp+zn ms so:005m m0cblfco. -nh ;0z of the circular path would have been

  At a particular instant, an electron moves eastward at speed V in a uniform nsagh* (8 hd -+q ,w)adibxmu(magneash mh q+d(*xa nw)b(-ugi, 8dtic field that is directed straight downward. The magnetic force that acts on it is

  An electron has an initial velocity tod3)db(rfr) ug the south but is observed to curve upward as the result of a magnetic field. The direction of the magnetic fd 3(r)bd)rg ufield is

  An electron moving along the +x axis enters a region e)9vtgf folw:9da sfevh n*woj))) -0where there is a uniform magnetic field in the +y direction. What is the direction of the magnetic force on the electrvo0t))of)dw-ealg9 f: h *wev 9s)fjnon? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced by a long straight currjt- q;xx1 cpn1 pc/gx7ent-carrying wire is

  At double the distance from a long current-carrying wire, the strength oav5rterysz4 z f,4n690mcp( k0w)wi of the magnetic field produced by that wire dec np) 4za6wrm4otz0,9is (fe 5y kw0rvcreases to

  Two long parallel wires placed side-by-side on a horizontal8wgs*ws:ez6jr d)cpfns,(s 3j gl;(d table carry identical size currents in opposite directions. The wire on your rigw ,6(jpsz:c s f*dsd)3 e (;jw8nglrsght 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 carry id)t6hkd-i c6an*z f wb;entical c-zin *dbkh6atw6) c; furrent straight toward you. From your point of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal curr mv-dxg6i x+4xents. The magnitude of the force between the wires is F. The current in each wir4-6g+idxvxx m e is now doubled. What is the magnitude of the new force between the two wires?

  A long straight wire carries current toward the east. A proton moves toward tebq 9 s1t3k+bl-ak++ nt8tt uhhe east alongside and just south of the wire. What is the direction of the force onb +9ut+etlh nat ksbkt8+q-1 3 the proton?

  A wire lying in the plane of the page car oc,2/ 3venvo .ohimpu3m2l+cries a current toward the bottom of the page. What is the direction 2o+pmv. oh ,en2 /mc3c uvoi3lof the magnetic force it produces on an electron that is moving perpendicularly toward the wire, also in the plane of the page, from your right?

  Two long parallel wires are placed side-by-side on a horizontal table. If/hdblzg; mhrkz k91; 9 the wires carry current in the same dirhkb9m lh;1krz d;gz9/ ection,

  Two long parallel wires are place : /5fy2bm-8scbgyyge d side-by-side on a horizontal table. If the wires carry current in oy /eb-bg2 fs:g8mcyy5 pposite directions,

  Consider two current-carrying circular loops. Both are made frutvzx7czfo;: w3 bw-n r-w-b, om one strand of wizrx7 ;vt-ww,o3uc:fb nb -wz-re 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 loop, the magnetic field at the center of the larger loop is

  Consider two current-carrying circular loops. Both are made from one sbc0k, gl+mt s4p/1jv ftrand of 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 magneti/1f,v4kpc+0t jb sl gmc moment of the larger loop is

  The maximum torque on a current carrying loop ocril3:wszik mw 9m5/ .vcurs when the angle between the loop's magnetic moments3 zk5wmrm wi/:.vi9l and the magnetic field vector is

  When placed askew in a /u bw+mh4 *,mcq81h4wl ujudrmagnetic field, a current carrying loop that is free to rot 1b4 u/qmhu,r4clj wdw*+8m uhate in any direction will experience a torque until its magnetic moment vector

  What fundamental fact underlies the operation*b6flh3w9y fla -qp ms .6w;)kslb6bw of essentially all electric motors66fm bbp9 -*wabl kl6q.wws) f ;l3ysh?

  A circular wire loop lies in a horizontal plane on a table and carries currentl21u*jc ym kl k)lp;;d in a counterclockwise direction when viewed from above. At this point, the Earth's magnetic field points to ll2u*lj ydkmc;;1) pk 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 magnetic field?

  In a mass spectrometer a particle of mass m and charge q is accelerat( ,jgeg xe6 90wlg 2pn/yly3bxed 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 the mass of the particle in terms of B,l yyn6 gxljwe (gbg3 2p0,9ex/ q, V, and R.

  A velocity selector consists of a charged particle passing througavs;a:sh8od y)d ;b3ph 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 fad;) sapob 38sv;h:d yollowing, 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 magnxo .gfi/w80cqn4iq0. jxezy d)y 9f3d etif q43z/ ig.i 0jn0.x8qweddyco)y 9 fxc field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a curr lvc,8:1 6 :mulq hwkywg:(ckment of 10 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 mep;xq tf9.- dexter on a straight wire carrying 5.0 A when it is placed in a magnetic field of 0.020 T? The wied.9f x- xptq;re makes an angle of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long l 12qwjv vqk64u5um)m has a mass of 0.050 kg and is in a magnetic field of 0.10 T. What minimum current in the rod is neededm1v5juv lqw2q 4)km 6u in order for the magnetic force to cancel the weight of the rod?

  A stationary proton is in a uniform m .bjk5ceo2 wz,agnetic field of 0.20 T. What is the magnitude of the magnetic force on the protjecb2okz5 ,.w on?

  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 s a+ oihr9 v -xw0om648e9lisispeed 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 speuym8k5 : zzk3oed 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 travelin vad3a;j-md6;22 2c,kcfeit t (se acgg due north 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 * kp qugp-t0 /zloko xq1s3u0)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-pttts9-f3q c th 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 o4wc 7awy 2gfqr9px6t9 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 xnk5xw8p xmm6:(8q bci)bpk 3A. What is the magnitude of the ma kb(npk)q6 xib8xc8m5: 3pmwxgnetic field at a distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magnetic field at t ttxcctp vln.-29.d)rhe ground, 10 m away?t.9t.t xnl-c)rc d 2pv

  How much current must njg5 r)o c .lw2am1ou-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 currenf (9cy ut8rmy9j)yen 1t of 5.0 A is the magnitude of the magnetic field due to the wire equal to the strength ofuy cmt8 9n9(ejf) 1yyr the 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 aresp5z 94z,,cpk/o3;q vlejrxn3b z+au separated + lq3pv4z,za zc9/u, ;es3obk np jr5xby 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 opp:)dxhvvk jc*eh c( 0*cb 9:rmrosite directions. The wires are separated by 0.20 m. What is the magnetic fxmvr:)bc jh(0c k:vehc*d* r9ield midway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in opke*hl ; eju:b )8-pszbposite directions. The wires as z ukl)*8h:bp ;je-ebre separated by 0.20 m. At what point between the two wires are the contributions from the two wires the same?

  Four long parallel wires each carry 2.0 A in the same direction. oj*k36n-h *t 1:rqbnz, excukThey are parallel to the z-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 t*3xuzbr*k6:j kn1ht, qec -no he wires experience due to the other wires?

  Two long parallel wires carry currents of 5.0 A * em:t(kq5u.k 4 ivgrmand 8.0 A in the opposite direction. The wires are separated by 0.30 m. Find the magnetic force per unit length between the two wir:i*vu(4qkge .5trkmm es.

  What is the magnetic field arttpy 3e:-m+fy9 jbx 5t the center of a circular loop of wire of radius 4.0 cm when re3tx9-pmt: jyb+ yf5a current of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. What magnetic 7u-vj2 mj.upt 8rquu 7field is produced at th 8upvu27jtm7u.ju-r qe center of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long anj ):p) w 8i5kxl3vmvrldkop19 d carries a current of 4.0 A. What strength of mag))lp5k l: ok8mxiv19jdpv r 3wnetic field will it have at its center?

  How much current must pass thrhg4 nd mdr7(f:ough a 400 turn coil 4.0 cm long to generate a 1.0-T magnetic fi(n74gddhfrm: eld at the center?

  How many turns should b*tn/gd 7.+npy x;lnfa 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 thatt58 (voyiuqd87,6ir ) cc;a r6h*capkjefld . carries 6.0 A if its dimensions are 4.; *6f8d.8ci,c5aa7 vji)q huok(lyt6d e c rrp0 cm x 8.0 cm?

  A circular loop of wire of radius k/5l49abwu 8wh q cna00.50 m is in a uniform magnetic field of 0.30 T.b4/09 kahl8w5 wnqauc 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-sectiq)b). galkk( vonal 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 3 c ,4ei4wkm,kzjx4dxof 2.0 A is in a magnetic field of 3.5 T. The loop has an ,, x4mxe3wkc4 dzji4k 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 wir)w( qw*3aqf m 9h0oivjidak g (*jx44ae of 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 planeoi*fqqwkv3 9mxhjij0wa (a )4 agd(*4 of the loop is parallel to the magnetic field?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic field ) n4j hhy.o9uuof 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 tynhuu) 4ho9.jo the magnetic field?

  A circular wire loopz c(jzbo52nq 1o2x(kc of 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 (charge e) has a h8c)-irs bi21k , yfr,xza9u-r4upbispeed 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 velocitaq 4rpg3rp8m:7 vqb (ly $6.9 \times 10^6 \; m/s$ 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 magnetc8,4wjw( baieh5wu e0j35igt4nz1nfw8t9 dqic field of 0.040 T. What is the radius of the pro h14jd3j05w ci,z5q8b uae(8tf9ti ne4wng w wton's resulting orbit?

  A proton is accelerated from reidpmg(n w ty0 zgw;204vat3 n9st through 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of mw2 309(dat0niggptm v4z ywn;otion. Determine the radius of the path it follows.

  A beam of electrons is accelerated t2izhh+4w z.ydhrough a potential difference of 10 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 particledhi h+zy.2 zw4s are to be undeflected?