If the north poles of two bar mafqw55::ex2zf;x cut yz+:uu hgnets are brought close to each other, the magne25w:tez cqffuyx5z h;: :u +uxts will

  If the south pole of one bar magnet is brought near the north pole osjij6 o/ tf3f;f a second bar magnefts jf/36o;i jt, the two magnets will

  If a bar magnet is divided into 8h iwl*(i a+iz;oa:tf,fh eg)vra 7+v two equal pieces,

  The Earth's geographic North bzmb,7gm/r 1p Pole is magnetically a

  The south pole of a magnet points toward the Earth'sb(j+ qpy8d y5po6f0 zp

  An electric current prl 5*1 ssycou(xoduces

  Which of the following ijhu-b.i0s4q valu 1m8 s correct?

  A vertical wire carries a current straiu 8kznpxz;;hl3kif 6 5i ut;(yght down. To the east of this wire, the matzfkhiuy i8x;;35;(n 6lzkpugnetic field points

  A horizontal wire carries a current straight toward you. From your point of view v,-9o1ua2jid e h*).bobwy tw, tiuybw2j o1abohvt9- w e*,.d) he magnetic field caused by this current

  A current carrying ldfl0c3 k2z9siw ve79j oop of wire lies flat on a table top. When viewed from above, the current moves around the lo0cfjdl932e swiv 9z k7op in a counterclockwise sense. What is the direction of the magnetic field caused by this current, outside the loop? The magnetic field

  A current carrying circular loop of wire lies flat on a table top. /q)yp48 ,pejbkj 2-cgon2f6 kt7fsquWhen viewed from above, the currybesc fgjj7nfu q4p8kpokt)q, 26 -/2ent 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 th7l5k*dwsom( ke

  1 T is equivalent to/ pho8/6 mvjgv

  The direction of the force on a current-carrying wire in auav mk-m+l w-. magnetic field is described by which of the followia.- +vu-lm wmkng?

  The force on a current-carrying wire in a magnetic field is the azmqm,ej- ksb /4br7gd h1:) lcvyp(/strongest when

  The force on a curre8g cf+r6vpx2k nt-carrying wire in a magnetic field is equal to zero when

  A vertical wire carries a current straight up in a n96/ n9i moojqregion where the magnetic field vector points due nort9o9o /q6j inmnh. What is the direction of the resulting force on this current?

  A charged particle moves and experiences no magnetic 3h0xd 0;ympb lforce. From this we can conclude tha;30myxhp0b ld t

  A charged particle moves zrj9 )opy:wt60 e , uz;bsnxx0with a constant speed through a region where a uniform mbzoj 6 ,:t xpy e90;uwn0r)xzsagnetic 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 bzqvp0 hka; mg-; n*j/wj5+szmagnetic field. The magnetic force on5k+m-j v hg/s;*q;zan 0 zwjpb this particle

  A charged particle is injected into a uniform magnetic field such lufw*zbgrp9e+) vm,)bv5d o 9w+af n)that its velocity vector is perpendicular to the magnetic field vector. Ignoring the particle's weigha e*r v9w9bpn+)bzg fflo+dv,m 5wu ))t, the particle will

  A charged particle is observhawrsuj4t ;u3y*6a2i3 wqs6h8w r pk8 ed traveling in a circular path in a uniform magnetic field. If the particle h;y p836r j4 wsuw*hhitk28wqs6u a3a rad been traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e travels in a circular path in a unifur:nod 8 3g4yvorm magnetic field. If instead the particle carried a charge of: d3 uvogry4n8 +2e, the radius of the circular path would have been

  At a particular instant, an eleiz8mo9b )s st-ctron moves eastward at speed V in a uniform magnetic field that is directed straight downward. sim9b8s)-z to The magnetic force that acts on it is

  An electron has an initial velocity to the south bu,tg2+x ;nx3ym t pgpub,ej3 1ut is observed to curve upward as the result of a magnetic field. ,tby jg2up,xx1 u+ 3m;pe3gtn The direction of the magnetic field is

  An electron moving along the +x axis enters a regiq(,jdw. sab q::e) t wic9j)vwon where there is a uniform magnetic field in the +y direction. What is the direction qvbsq jw:e.,9(j)d :awic t)wof 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-/tazm9e 3;2mqzl yb*h carrying wire is

  At double the distance from a long current-carrying wire, the suf/xmac6+qhlma fd)6yh ; ;/pjve3 3etrength of the magnetic field produced by that wire decreases t;3jmd py ;va+63h/hfuaxc )qfe6el/ mo

  Two long parallel wires placed side-by-side on a horib d hf4b ldl090xhhca3u419znzontal table carry identical size currents in opposite directions. The wire on your right carries current toward you, and the wire on your left carries current away cf ab3h19d 09dxnl4z04b l huhfrom 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 prgfb6:n,m;lou a /d)hg;sf8table carry identical current straight toward you. Froms );gn lf8 /6pd:uag;m hfbro, your point of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnitude of the force betwemdv1 .ud7 ux4oen the wires is F. The current in each wire is now doubled. What is the magnitude of the new force between thod4x 7v ud1m.ue two wires?

  A long straight wire carries current toward th*t3y k fpvfl (u3(q+lxe east. A proton moves toward the east alonkx3l((up t 3qflf +vy*gside and just south of the wire. What is the direction of the force on the proton?

  A wire lying in the plane of the page carries a current towardy +fy0qlm i gi :;,*2nylgc:hy the bottom of the page. What is the direction of the magnetic force it produces on a+;yy*yql :h,0ln2cf yiigg:m n electron that is moving perpendicularly toward the wire, also in the plane of the page, from your right?

  Two long parallel wires are p3w6) (ivllgn p5zw4lplaced side-by-side on a horizontal table. If the wires carry cur6vn iz 35lpgl4lw )(pwrent in the same direction,

  Two long parallel wires are placed side-by-side on ap y7p f*ysc .0 s0,bwj84qhslu horizontal table. If the wires carry current in opposite direcuy0p,fyhcb8ws7sj. p *s0 l 4qtions,

  Consider two current-carrying circular loops. Both are madeyplt3a c1rg , vq, in5s:w5.qj from one strand of w ,qqy vl.c,wi1gr:ntaj5p 3s5ire 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 bp vhhat)a1 23circular 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 moment of the smaller loop, the magnetic momenh3 b1t)p avha2t of the larger loop is

  The maximum torque on a current carrying looii o pv+ kw2/ 7;h52deqzjma1sp occurs when the angle between the loop's magn5+ p 1;7eizia s/hodkv22j wqmetic moment and the magnetic field vector is

  When placed askew in a magnetic f-zk5wis, f:9t vhfqc 7ield, a current carrying loop that is free to rotate in any direction will exqw itkzfv-5sc,7f:9 hperience a torque until its magnetic moment vector

  What fundamental fact underlies the operation of essentially all electrfyy*97lmz fm9jxh -7cq;idb h) vv.t 2kz /q4iic motors?y xhiz-d*7f9 i fylt;.q9)jm2h74vbmkzc/qv

  A circular wire loop lies in a horizontal plane on a table and carries current iua)uu hdz; h n +rt.-; kdvs-e,cmgw;3n 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 lr-dhtsga d;3vw uhn,;ze +;m c)k-u. uift 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 is0xnhenp6 bd7 0 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 the mass of the particle in terms of Bnxh 70 60epbdn, q, V, and R.

  A velocity selector consists5b)-kzyb7arv kpw5:ls /z,q h of a charged particle 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 in a straight line. In the fowq5par:)lz bkv7y5 bh-s / kz,llowing, 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 t:tfrk0h:a3 w5pzdda2 df 6x+ is oriented parallel to a uniform magnetic d:tf :5x af6t kadh+2wz0dp3r field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in i3lebx1 /97xmgo9pir4x )m lca 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 / ;v uk2t.pzch(4e whsA when it is placed in a magnetic field of 0.020 T? The wire makes an angle of/tkhs;p(u .z2hev wc4 $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long has a masso8l 0ob.vh fl+ 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 weightolv8b +lo.h0f of the rod?

  A stationary proton is in a unifoshxt7 zzh5 9he(w8k,n rm magnetic field of 0.20 T. What is the magnitu(z7h5zh9 8kswxh e,nt de 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 es+lqp*vor619. c*.ng3q+tq hx rw qv 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 an9utu ue6g 9n3ma - 8dbeyie2rv;qro 0 ks2,+a speed 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 n 6ol(b 9lk i.qnbl03wd xzhy04orth 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 speed of i 5;g;g iqsf2.zad+7 ocu0er faoi,i,$8.0 \times 10^6 \; m/s$ 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 o 3x/3alp lfovbqq27hc 7s*x+b f $8.0 \times 10^6 \; m/s$ 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 y/bu nqf+8; wuof $3.0 \times 10^6 \; m/s$ 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 the magnit:aeqz,kq5 z2svww-mr(f ( d fmqjz::9ude of the magnet9em :vs:w(q-zqfj awr5z, 2:kd zf (qmic field at a distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magnetic field at the ground, ke5u7japvy jbij 0i;7 o:;f. f10 m i f ;jbu7aevk:yfj; j.p705ioaway?

  How much current must flow for *rywu a7yg 1* a-lguc.tvg3s(tb10b l$1.0 \times 10^{-3} \; T$ 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 tx 91e ;knemmn2ydf -1zhe magnitude of the magnetic field d ;y2f1km1xe9mnn -ez due to the wire equal to the strength of 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.oyg)a4oh:i/ 7sr na v, They are separated by 40 cm. What is the magnetic field in the plo:ayor4v7 )/i,nash gane 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 mnywe 1/k0vid+i 9q: vA in opposite directions. The wires are separated by 0.20 m. What y:9/v1qn edikv +wim0is the magnetic field midway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in ouut8 os a9 qw5f-o l/7jms0c/ipposite directions. The wires are separated by 0.20 m. At what point qs uj s0a-ofo8 lci 975w/t/mubetween the two wires are the contributions from the two wires the same?

  Four long parallel wires each carry 2.wgi1a0 ei a(htm/;2dj 0 A in the same direction. They are parallel to the z/ iwt(2;ijm ahg ea0d1-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 Afkvs 0j5vev rx(z yh0sv;t)y*3cdgz-hm19 g( and 8.0 A in the opposite direction. The wires are separated by 0.30 m. Find the magnet)-y5vrz3; ktv(vm(0hzg d s9vcef 1s0gxyj *hic force per unit length between the two wires.

  What is the magnetic field at the center of a circularwqz+x(vgd 7gi wd*mol(:tq +, loop of wire of radius 4.0 cm when a current of 2.0 A flows in the wireitd v, (lqgwwg mz(o+d:*x7q+?

  A solenoid 20 cm long is wound wiwq3*c-q(; gr max1nx/7taeu xth 5000 turns of wire. What magnetic field is produced at the center*; qx/ 7x1-aw(ucmrtgx nq 3ea of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10)1mbzhj5jmd5(d pae,3fkct : m long and carries a current of 4.0 A. What strength of magnetic field will it have 5fjzb35dh(pma1et k:c,d )m j at its center?

  How much current must pass through a 400wvw/(:+ tmbvj*v .idc0vn fe* turn coil 4.0 cm long to generate a 1.0-T(v**e0ivmjftv/ ww vbc+.d:n magnetic field at the center?

  How many turns should a 10-cm long solenc*jmk8 fd9xh, qa5 (gxoid 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 rect4m4p7ke.qzfwbd .pazn/il2 u r*i j-3angular loop of 120 turns that carries 6.0 A if its dimensiw4fezz npa24i.d *b3.lp /jr7qiukm-ons are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform mag*atsxrr 4 9y t0xt+n-gnetic field of 0.30 T. The current in the loop is 2.-yt x xt0ntsgrra* 49+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 are8u y3tr,geagzv;( ok2a $0.12 \; m^{2}$ 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 currtput mms1, 8+0s z0tm8nyefs(ent of 2.0 A is in a magnetic field of 3.5 T. The loop has atmn0(ps,+mm s1eufz8 80ytst n 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 wire of radius 0.50 m is in a uniform hd4tznqo0,)ce6 kcz4 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 toh ccoe464)qnzd t 0kz, the magnetic field?

  A circular loop of wire of radius 0.50 m is in a uniform magneti)tl8 6a iv8+lqg5cpgfbv pj6 z 1oe(.kc field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the 5fc.git v z(6lveop688+alb )k pq1gj plane of the loop is parallel to the magnetic field?

  A circular wire loop of area gbl 5p+:(g4j(rh 1lvf 7xp/ttr rk 0;nuv g:bm$0.25 \; m^{2}$ 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 .*n)uf 5ls /whos*;ewrfkl3 we) 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 withy0(f4972mt nuvy to 2vovtt)pwfi6 ;j 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 thqse e f0zb:y()en moves into a magnetic field of 0.040 T. What is the radius(z: 0be)syfqe of the proton's resulting orbit?

  A proton is accelerated from rest through 500 V. It enters a magnetic field omuhox(/eep) xq. 7+ dwf 0.30 T oriented perpendicular to its direction of motion. Determine the radius of q(dphxw.)m eu7+e xo/ the path it follows.

  A beam of electrons is accelerated through a potential difference of 10 kV be mt81wu 8jc; iq/owz7ifore entering a velocity selector. If the B-field of the velocity selectoiw8 /w jic17t8;mz quor has a value of 0.010 T, what value of the E-field is required if the particles are to be undeflected?