If the north poles of two bar magnets are brought close m5n ip;m8.c tbto each other, the magnet;8 5mnmibpt c.s will

  If the south pole of one bar magnet is bru0x ms-vmy 4q6ylq,/dought near the north pole of a second bar magnet, the/ yxm qy-s,4vld0qm6 u two magnets will

  If a bar magnet is divided into two eqbubqo/ o b:6,dual pieces,

  The Earth's geographic North Pole is magnetically 7h :gs;( pyd eoqki*w*a

  The south pole of a magnet points toward fwg x7fg0x)y,vv:wr,fd2 q0 lu bq*7ythe Earth's

  An electric current produc0 am rjt1en1;6j y/kgj8a. tlces

  Which of the following is correct? ex2 :u9ty3nsz

  A vertical wire carries a current straight down. To trfld,.9 ;h, l0pjcp piyag/i0he east of this wire, the magnei;p.pdh ,l9a /g fji,ryc0lp0tic field points

  A horizontal wire carries a current straight toward you. From your point vzve2p - g xhyj9a07oy+s:rm75n y5l bof view, the mag5 ynsvv7zyp:o7jmly-e+9brx2a 0 h5 gnetic field caused by this current

  A current carrying loop of wire lies flat on a qm+vj;x (txz 0fo.7dh 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, outside the loopdz hx(+mfoxt;.0 7 vqj? The magnetic field

  A current carrying circular loop of wire li5)k79s kaw;(7fudlpott3 ebxo g(kg5 es flat on a table top. When viewed from above, the current move3efu;kp7w5 obg7alkkdto (5 ts(9) xgs 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 t(j2goa x 5ll vyzi df+v(4m0-6,eqbwmhe

  1 T is equivalent toy a,zbf4 )c.+s3jsfzr3m qw*,vs-xrg

  The direction of the force ef9v tbis4-.i*ve6dt on a current-carrying wire in a magnetic field is described by which of 4se.difvb *ve6t-t 9ithe following?

  The force on a current-carrying wire in a magnetic field is the strongest whfv.d2vlrm(j jj27h 3 men

  The force on a current-carrying wire in a mag* onlylyaz 88gh*g:gnerq .r1 u 6oq7(netic field is equal to zero when

  A vertical wire carries a current straight up in a region where thefu 4yqu8c (v/b magnetic field vector points due north. What is the direction ofy(/cbf8 u uv4q the resulting force on this current?

  A charged particle moves and experience2ol t:1kl nr1vs no magnetic force. From this we can concl lnlk:12 rv1toude that

  A charged particle moves wiyxlz4pooj d8+c/s.y n.21 yhy th a constant speed through a region where a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting on this particle will be 1hz8 p+o.ycndo2y/4xsjy l .y maximum when the particle moves

  A charged particle moves across a constant magnetic field. Them sc:d3uvdj vkz)*a) 4 magnetic force on thvjm ddkvua c3z*s4) ):is particle

  A charged particle is injected into a uniform magnetic field such that5x*b1m1 m xvjf18zri t its velocity vectorxtbf mzx 5jv11r8*i 1m is perpendicular to the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling am2f-j9o 8 wi rro9lv.i g c0an5xxm92in a circular path in a uniform magnetic field. If the particle had been traveling twice as fast, the radius of the circular pa 5 iwxjng9oo9 i amclamr2f90v-r8x.2th would be

  A particle carrying a charge of +eoc( lhwbs8 159wlo y3i travels in a circular path in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of the circular pay1b9siol wlwco( 5 38hth would have been

  At a particular instant, an electron mod nllh .d).c5x ff.7xxves eastward at speed V in a uniform magnetic field that is directed straight downward. The magnetic force that acts on i)dhc 5l.xn.fx7ldf. xt is

  An electron has an initial velocity to the south but is obd m(-c 6hx9a4 hnxju/xserved to curve upward as the result of a magnetic fielddh9 mcxn- ux (h6/axj4. The direction of the magnetic field is

  An electron moving along the +x axihz vkj +pkch98 684pods enters a region where there is a uniform magnetic field in the +y direction. What is the direction of the magnetic force on the electronk+46po8 h8hckd 9jzvp? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced by a long straighxki n3r3p9;rat current-carrying wire is

  At double the distance from a long current-carrying wif/s) )xcb:rze4kzzuss8 7 oj5p w2t)pre, the strength of the magneti su) jzk5f7/ ):zwrt28bs4pcosxepz)c field produced by that wire decreases to

  Two long parallel wires pyy5;d. c5 ncfy dvji0l,4*zc xiy8bb9 laced side-by-side on a horizontal 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 from you. From your point of view, the magnetic field at the point exa;,db 4 vz f8y ycd59 ci.0yyxlib*5ncjctly midway between the two wires

  Two long parallel wires placed side-by-side on auym mvc3c8c 56+tk7rn horizontal table carry identical current straight toward you. From your point of view +3v5kuccc6mry7 t8mn, the magnetic field at the point exactly between the two wires

  Two long parallel wires ca8j)0l:gp aj ; iui/frxrry equal currents. The magnitude of the force between the wires is F. The current in each wire is now doubled. What is the magnitude of the new force betwee8afii lj;/p0r :gj)ux n the two wires?

  A long straight wire carries current toward the 10gj-xcoi ;7jmai.h reast. A proton moves toward the east alongside and just south oo7x;m 1ica.h-g r 0jjif the wire. What is the direction of the force on the proton?

  A wire lying in the plane of the page carrie6u wbpox p9a, v8edo+qb93w -ks a current toward the bottom of the page. What is the directio,68- qdoxw+ovu kb3e99 wpbapn of 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 oe m(epdm 5b+/dn a horizontal table. If the wiredeep( /b+dmm5s carry current in the same direction,

  Two long parallel wirj6xue a(2pco ,v3q6n wes are placed side-by-side on a horizontal table. If the wires carry current in opposite directionsq x,uc36e 6a ovwn2j(p,

  Consider two current-carrying circular loops. Both are made from one strand ofcqt* of36r 3rf wire and both carry the sa*o3cffr6r 3 tqme 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 0m*w 9k /e3pkafz25qw d-pyoqcircular loops. Both are made from one strand of wire and both carry the same current, but one has twice the ra2 ea ow dyq-p /kkz5m*3wp09qfdius 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 currenz1 jd4njfl4b d ;f-9.(s ffoimt carrying loop occurs when the angle between the loop's magnetic bf nf(ffso idl4;d.m9jj -1z4moment and the magnetic field vector is

  When placed askew in a magnetizq)wq9s5 4,vunguw)sx w wj5j3 5r7kac field, a current carrying loop that is free to rotate in any direction will experience a toz5)59 3s qjugqj),5swnr xukwaw4 7vw rque until its magnetic moment vector

  What fundamental fact underle j1ihsas;q.fxll 0k1l kc/-2 ies the operation of essentially all electric motors?s1kifl/ aq2j1l0c.x sl- e;k h

  A circular wire loop lies in ,96qcv8itwvnddn c/ ju84vi0a horizontal 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 table because of9 v8qu4tvc/0 nc6 ,injdwivd8 the torque caused by the currents interaction with the magnetic field?

  In a mass spectrometer a particle of mass m and charge q is acceleratejy p b j0z 5:njx;/iwvm40-yjojn40h bd 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 fo;jjjmjn0pw /b nzhi0v4y -450jxb :yield 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 particle passing through crossedzr ch*x/qf6c gz01v69 c/u sa fr2qt9b electric and magnetic fields. The forces exerted by these fields are in opposite direct9/bc cvx*zu ah0sq g19rzt/cf62 6qfrions, 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 field point?

  A 2.0-m wire carrying a current of 0.60 A is oriented parallel tor te;1 iv5b9nu,3rslo a uniform magnr,e l;s1n9i r 35voutbetic field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10p8p q m5j+av;c 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 met7nwgz f:1e*a7o*4ameosukr 2d 6x ed+er on a straight wire carrying 5.0 A when it is placed in a magnetic fieo d+zea n7*wxka461df* s72oru gee m:ld 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 dj4)8/e vcjx q5pc*zq0.050 kg and is in a magnetic field of 0.10 T. What minimum cur)xp8q5jq zevc4j * dc/rent in the rod is needed in order for the magnetic force to cancel the weight of the rod?

  A stationary proton is in a uniform magnaqa6z9 3yzm53xia; rtetic field of 0.20 T. What is the magnitude of thezm6axqy9 z3rt5 ia3;a 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 widl)4 /u 3c(wcrw-noeuth a 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 / hjeylg/j:v6speed 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 spee 4b g0w :3jdwglo3c0bgd $4.0 \times 10^5 \; m/s$ 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 a8cp rdpv5w4v) *2n tvv 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 sd;z4yzbons* 7 peed 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 of ewwdy9z2:0n v $3.0 \times 10^6 \; m/s$ 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 carrp j (-e:he4wqnj n- .l5mf/wnnies a current of 25 A. What is the magnitude of the magnetic fiell(5:n-n jwp-emj n/ 4nw.fqhed at a distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magnetic field at theu*mk ti b9a/5l ground, 1iml * b/ktua950 m away?

  How much current must vfjn7 7 s0mid0flow 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 5.0ye:yk9k:2e7ihcho s ofv1 2y. A is the magnitude of the magnetic field due to the wire equask: :ivfy.2o o ecy7e1 29hhykl 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. p:gm;z qlp5z7 They are separated by 40 cm. What is the magnetic field in the plane of the wires at a point that is 20 cm f:5 ;l7zq zmppgrom one wire and 60 cm from the other?

  Two long parallel wires carry currents of 20 A and 5.0 A i6e 4(fwmu2jv.tx +/ 2nfvvbsmn opposite directions. The wires are separated by 0.20 m. What is the magnet x4msnfv2(./vtbvfemw2 j u+ 6ic field midway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite x6sfo)t2 p8xz jlp,s(directions. The wires are separated by 0.20 m. At what point betweenjx plxoz26s (s p8,)tf the two wires are the contributions from the two wires the same?

  Four long parallel wires eacgjko ;f1v.vx: :myl b )rjs((:4b xbdlh carry 2.0 A in the same direction. They are parallel to the z-axis, and .xb) s:kv( xm; dlbr(bj4 glo:yfjv:1 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 8.0 A in the opposite directd8mn;w)1bxzv)q gb0h ion. The wires are separated by 0.30 m. Find the magnetic force per unit length between the))h1 bdqvn m8b g0x;zw two wires.

  What is the magnetic field at the center of a circula *)ki ;c4dxajb; ej,cvr loop of wire of radius 4.0 cm when a current of 2.0 A flows in x)vdci;4e, k;jjcb *athe wire?

  A solenoid 20 cm long icb4 r p)2 fna3 1xz.lu 55oorm:pq,qbds wound with 5000 turns of wire. What magnetic field is produced at the centeraunbxqpc3:z,d q2ofm 1)rl5por 5 .4b of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carries a current of 4.u / o(5jx+n rl5gj3cln0 A. What strength of magnetic field will 5/n(ronjl l5gcj+ x3uit have at its center?

  How much current must pass through a 400 turn coil 4.0 cm long 9sav, kq 9myb/c*i//ocm 4*z2+sckiageu u ;h to generate a 1.0-T magnet/; kycg *aca,9soz ime/vc*s mk2u 9 4/uhqbi+ic field at the center?

  How many turns should a 10-cm lo fmrvxm o9: ,pq)jv0)rng 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 carrie+h rz2suo65bgs 6.0 A if its dimensions are 4.0 cm x 8.0 cm?u5z6b oshg2r+

  A circular loop of wire of radius 0.5w :r3apx)txi5q(*z8q b 2zlol0 m is in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. w zl izx(t3oqa8)br2x:plq *5 What is the magnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sec/lx*xlo fzc +6 qcd-s5 j+w/u2t-oqhs tional 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 ofeh+ueyrqyf06v - 3fw( 2.0 A is in a magnetic field of 3.5 T. The loop has an area of 036 whyuvqy(ere -f+f $0.12 \; m^{2}$ 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 uogl,q47:qd . /hzdwt7myo+v3f6fwiyk7ru y ;niform magnetic field of 0.30 qd77ok, h lyzfvfuwy wr+yitod.:;/gq3 6 4 7mT. The current in the loop is 2.0 A. What is the magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular loop of wy)ix :khpl7kmc,( 6a lire of radius 0.50 m is in a uniform magnetic field of 0.30 T. The (7mi6 pcxy:k) alkl,hcurrent in the loop is 2.0 A. What is the magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop of armn8ll1cdzs ,1it ia*+ea $0.25 \; m^{2}$ 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 (charg;fs87ec +.gvtnh vb5. thlfu:e 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 saz.9o3 zvu4 ean9:be2)ozke with 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 thr8np8*omrb/4x- 2op)ar mtwg eough a potential of 1.0 kV and then moves into a magnetic field of 0.040 T. What is the radius of the proton's resulti rm t4oaxr)o *n-pmeg 28wbp8/ng orbit?

  A proton is accelerated from rest through 500 V. It enters a magnetic fie7djo wcd0;r6bld of 0.30 T orien bwrc7;0jd6 odted perpendicular to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through fkvm,sj-6.zr a potential difference of 10 kV before entering a velocity selector. If the B-field of the velocity selector has azjf.m,6k r-sv value of 0.010 T, what value of the E-field is required if the particles are to be undeflected?