If the north poles ofx)s7qc sufq7;ae qq87 two bar magnets are brought close to each other, the magnet7fqx8c7seqq) aus; 7qs will

  If the south pole of one bar magnet is brought near the north pole ofw8tas;4ty1d8 h f-zw 3*jcojw a second bar magnet,a o8 w;wz1cyj f8djs-wt4 th*3 the two magnets will

  If a bar magnet is divided into two equal pir84nqg62lp s:lig o,4ee2sgkeces,

  The Earth's geographic North Pole is magnetigpx6cy/2* )ocu fyq)f cally a

  The south pole of a magnet points toward the Eart 0h8tb bjos2:ph's

  An electric current produunsg uku 900*pces

  Which of the following i+p2tksvbp1pgk l08ca j+q 88gs correct?

  A vertical wire carries a c1wgsbdv3/z , :x;exl6 cfkwd1urrent straight down. To the east of this wire, the magnetic field points eb3/sg6ckzvd; fw, l1 wxx:1d

  A horizontal wire carries a currentc(4 rx+kjx 8mtp3b3rzl+3ja j straight toward you. From your point of view, the magnetic field caused byc rl8+j3b 3z+rp( 3akmj t4xxj this current

  A current carrying loop of wire lies flat on a table top. When viewed from b-xui :xe:wm lj,iv2u.kb k99above, the current moves around the loop in a xebxm.i2 -,wku ulijb:9 v9:k 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 li (r48u6,vmycf p+uwsach uud0f 1ei3 7es flat on a table top. When viewed from above, the current moves around the loop in a counterclockwise sense. What is t,pmu u0c4h +3 1 e(vcu7fufsyrdi68aw he direction of the magnetic field caused by this current, inside the loop? The magnetic field

  The SI unit of magnetciw: 4e gxq;:auoo 8(cic field is the

  1 T is equivalent to4* qk3 bb6rhae

  The direction of the force on-5zzus1 tm wp1.y5mqv a current-carrying wire in a magnetic field is described by which of the.u-1 55mvp sz mqzwt1y following?

  The force on a current-carrying wiren , cw8bxjhmx(fwb+j )ags+:) in a magnetic field is the strongest when

  The force on a current-carrying wire in a magnetic field is equal to y,aq99 6a *5rkzd/ -/wy u sbek9smbbuzero when

  A vertical wire carries a current straight up in a region where the magnetik gra-b73q+ dngpv09 lc field vector poin-k3a7rbplqvgg dn 90 +ts due north. What is the direction of the resulting force on this current?

  A charged particle moves and experiences no magnetic force. From this*;e f iu9v5, n:5aynnv 3tffwb3kz2jz we can conu9 nvna eji*nyf3v t2w:;3 f5z5 ,zfbkclude that

  A charged particle moves with a constant speed through a region where a uniformo0 :nlq)hpl;c r +,hob magnetic field is present. If the magnetic field points straight upward, the mal qh ,lrn:bco)o;+0p hgnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constant magnea ( bh2mjp 6p6 9k5geuaqweop:o,g+; utic field. The magnetic force on thisu a6k;(q5 gopao6uhbj ,p:g+m 92weep particle

  A charged particle is in8k0( 6ryl mkar7ez +skjected into a uniform magnetic field such that its velocity vector is perpendicular to the magnetic field zrkr e8k7+ 6lamk(0ysvector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in a circu c7n ex;c.xl*ular path in a uniform magnetic field. If the par.c* ;xxcnlu7 eticle had been traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e travels in a circular pa 4zukn2dpv6l2q- lm njh *+kgjr(cq3+th in a uniform magnetic field. If insv-+zl6hk3qupkc + j l*qj2rd (2mnng4tead the particle carried a charge of +2e, the radius of the circular path would have been

  At a particular instant, an electron moves eastward at speed V in ajwgo/ ) heo*qu8u5;t b uniform magnetic field that is directed straight downward. The magnetic force thatb/wujqoo8ug5 hte; *) acts on it is

  An electron has an initial velocity to the south but is observed to curve u uxs*kmwd;anw;r)p4d f)f+ b3 pward as the result of a magnetic fielddfs wp aw4)m;*xrkdbn3 ;+ )fu. The direction of the magnetic field is

  An electron moving alon pck 8kf7h22d yiod(3 zu(x(4abcv-azg the +x axis enters a region where there is a uniform magnetic field in the +y direction4obdc( y2d7ak-uk( f2xvc8 ihzz(3 ap. What is 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-carr09aaeqwk4n; iun)5 jw3z y3umying wire is

  At double the distance from a long current-carrying wire, the strength of the ma;c 7iwy h i2;sq0d:dkcgnetic field produced by that wire decreases to7:csi0iw2dhyq d; ;kc

  Two long parallel wire p;k+ ll7bdw+ks placed 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 lefw ld+ pbk7+lk;t 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 iden0m0yybzns-8 ,ic0b adtical current straight toward you. From your point of view, the magnetibaym ycs0n-z b0di,80c field at the point exactly between the two wires

  Two long parallel wires cartm1i ju0ig +9sry equal currents. The magnitude of the force between the wires is F. The current in each wire is now doubtsgi+9u10j i mled. What is the magnitude of the new force between the two wires?

  A long straight wire carries curr5dytu0dxf4 w)e hxd hht4v3/2ent toward the east. A proton moves toward the east alongside and just south of the wih5fd34ye2dtud4wxv ) tx hh 0/re. What is the direction of the force on the proton?

  A wire lying in the plane of the page carries a .p0v9+wh w.j)rmg bh3v2s zhxcurrent toward the bottom of the page. What is the direction of the magnetic force it produces on an electron that is moving wghvp js2+ .vhr 3xw0zm9 b).hperpendicularly 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. 4b p3maq(k 4sv by6bl8.k mduzfw.y+l ln*9:qIf the wires carry current in the same pl b6 l44 9 :wm(+qu bvybf alynz3.ms.qkd*k8direction,

  Two long parallel wires are pl.r -d3wlimw v+aced side-by-side on a horizontal table. If the wires carry currenvi. dlw mr+w-3t in opposite directions,

  Consider two current-carrying circular loops. Both are made from one strgy)nkus uj+:p1 r 6vq5and of wire and +q1yv6 p:nuu5gjk r)sboth 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. B .tt:dm:jxbzd .* xc *duylg,vdw*)c7oth 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, x*:l: .d7bcj,)gw*xdd vd tt. zmuy*cthe magnetic moment of the larger loop is

  The maximum torque on a current carrying loop occuroxi,cy i0e x,5s when the angle between the loop's magnetic momey,eoxii c5,0x nt and the magnetic field vector is

  When placed askew in a magnetic field, a current caj55q.wj49p+jz/ wb v0wu lujxrrying loop that is free to rotate in any direction will experience a torque until its magnetic moment vecto. +50wlj49/jjqwxbzuj vp5uwr

  What fundamental fact underlies the operation of essentia) ms dkse;1bmjmz0h)1lly all electric motorsb) h0z1m jmmsk;d)1s e?

  A circular wire loop lies in a horizontal pp/h(e*avshco + z r-9alane 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 nortc/e(hp9h rzovaas*- +h 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 :smudypxeq0zc6 t3y 7,l:mp ;a particle of mass m and charge q is accelerated through a potential difference V and allowed to enter a magnetic field B, whsemtp c:mx0uy3 yl6z:;p7,dqere 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, q, V, and R.

  A velocity selector consists of a cn40sgyqxi +g*p v ns.3harged particle passing through crossed electric and magnetic fields. g. * i0 nxv+4yp3sgqns 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 field point?

  A 2.0-m wire carrying a current of 0.60 A is orien7vc:gi;oxvd- 8j+x l ited parallel to a uniform magnetic field oflg ox7xvd i+c8;vij: -
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A hr lrz;9d p:dub,lpv0,xg+e5 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 meter m+- mydvo +de/ke*q0* ep2bwjon a straight wire carrying 5.0 A when it is placed in a magnetic field of 0.020 T? The wire makes an angle of +bpd +-2 dmyok /vq*eemj0ew*$27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long has a massy(q(1cyszj c+m u*i/x9.i qu r of 0.050 kg and is in a magnetic field of 0.10 T. What minimum curreysjzu+mc9 (1 qx*qy.i(cui/ rnt in the rod is needed in order for the magnetic force to cancel the weight of the rod?

  A stationary proton is in a uni/nexs53h:cksq .xy3nu95 jpy dih4.g form magnetic field of 0.20 T. What is the magnitude of the magsiydgknxjh ny4.3e xqsp/ 9. uc:553h netic 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 witri 7q2oqu: lb,pl1ww1 h 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 speed bc2pz c53u/n(7zfed k6ub wa 5of $5.0 \times 10^7 \; m/s$ 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 yj)-/f f - 1+htp;u/xeklxavbyb:9s zg 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 speedp6*qpj*ia + 8ak*jtvi kpj:9n 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 witmemwshcgl6 y-0e35a)h 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 speedo-inpzk-u; )v 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 curlf j *s5ya0ee7rent of 25 A. What is the magnitude of the magyj 5f0se 7eal*netic field at a distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magnetic fi/upgrt5qzu u d3/f-z0eld at the ground, 10 m fqd /u/53uztgz 0 p-ruaway?

  How much current must f g.3ye4d nbb5wlow 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 carryixyh;wy,ngqy86 s( 1 qfng a current of 5.0 A is the magnitude of the magnetic field due to the wire equal to the strength of the Earth's magnetic fhq8y qy; ,6sgy1 (xnfwield of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents of 10 A in opposite direw5su2z 4v qkp2ctions. They are swvz4kpqs5u22 eparated 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 directxt (z8xzlt *h0ions. The wires are separated by 0.20 m. What is the magnetic field midway between the two *ttlx 0 8xzhz(wires?

  Two long parallel wires carry currents of 20 A and 5.0 k i/zhm 1vc*axd.3hif:*-ta+2txhb oA in opposite directions. The wires are separated by 0.20 m. At whatt: fkom* h*1hda2hi3/ zcx+.tivbxa - point between the two wires are the contributions from the two wires the same?

  Four long parallel wires each ,1ms;zb-h km6gonq i)carry 2.0 A in the same direction. They are parallel to the z-axis, and they pass through the corners of a square of side 4.0 cmo,q )mb6 nmg;zis- 1kh 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 oppositvjm)h0g k-c54nwbs:8w6w,o b x dp8tm: ;fpdke direction. The wires are separated by 0.30 m. Find the magnetic force per unit length between the two wir bd8)swt5m4w:kbo6:c,p08k-xd hn fg;jwv pmes.

  What is the magnetic field at the center of a circular evpse1, )) roshjsg.9loop of wire of radius 4.0 cm when a current os1.,e hvss p)e )9jgrof 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turnl;d/p x(5 nbby0j/ oaus of wire. What magnetic field is pbp ob/n50/;x ylu(ajd roduced at the center of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carries a current ofo+125wraaifw 4.0 A. What strength of magnetic field will it have at w52ai w+af or1its center?

  How much current must pass thro -vstxgzvgbyl .e0,:9 ugh a 400 turn coil 4.0 cm long to generate a 1.0-T magneticgz9 .,0-tbvxg :lvy se field at the center?

  How many turns should a 1cbeva)govbur h5oj96p rt6 s3og*;tql*97 n0 0-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 rectanguldy z ij0:hu +z2q (vtrdt+njwv 6j:;m;ar loop of 120 turns that carries 6.0 A if its dimens 0+vj6zdy tw;hrum+jdqz(t ;:vnji2 :ions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uwj1h2xvyi:)t 0ajz+ju4q qy 7niform 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 perpendicular to the magnetic fu y vh74j+wj)t:j qyqz21xa0 iield?

  A circular loop of wire of cross-sectional 0t kbypsmm0 b1 a9ldy2 2gk:h(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 isyxi0z: s/yn8t in a magnetic field of 3.5 T. The loop has an arisx08:nz t yy/ea 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 field of 0.30nhpuuyn08 +3 -whpnfc mga90) T. The current in the loop is 2.0 A. What iswn h3cpy p a80nfug+m-0h9 n)u the magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic fiih.,; u m;mocield of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane of the lmiu oc.;,imh;oop is parallel to the magnetic field?

  A circular wire loop or h2 hn5yj2- hih4:zugf 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 spe99fe4qr8j,9zp2dlv+vnfg us 9 ju9yo ed 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 velo 2o:qo.m6kv/luz)0pi r62 yf4caw yeecity $6.9 \times 10^6 \; m/s$ 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 potentif+(my h 3x/ksial of 1.0 kV and then moves into a magnetic field of 0.040 T. What is the radius of the proton's resul mh3six+fyk /(ting orbit?

  A proton is accelerated fro iog ic47q9, 5zsm 1;i474 eazuurjuqcm rest through 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to z4,5eiumg7j csa1 i r uqiuzo9 c47;q4its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated thci184rx; n uqurough a potential difference of 10 kV before entering1ui r8cu n;4xq 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 undeflected?