If the north poles of two bar magnets are brjo ik2+ x kae2b+vol;2ought close to each other, the magnets wille+o vo+;k2baj 2lxi2k

  If the south pole of one daihv a02t6xd fs/ o,n;3 l:zzbar magnet is brought near the north pole of a second ba/:ia2of,h0zd tdzsva ; nxl36r magnet, the two magnets will

  If a bar magnet is divided into two equale:bl+ fuoe v78kb.r/w pieces,

  The Earth's geographihfx3 (.by g uh a;lp6j-p(mg0jc North Pole is magnetically a

  The south pole of a magnet points toward the Eartvdj4bwa0nrcz /bn 9,; h's

  An electric current prod53:vp w4yk-17l aq ukrw5 tz3apum+izuces

  Which of the following is c1r v)ug2lc0pi8xwh;9dfao 6morrect?

  A vertical wire carries a current straight down. To the east of th 3bh019gyn59wuz yovxis wire, the magnetiz1b gvn 95uh3y09xywo c field points

  A horizontal wire carries a current strai eal +nexjx (0 3dxi:ucef1.0dght toward you. From your point of view, the m 0+3na li:e01ju c(xxded.xef agnetic field caused by this current

  A current carrying loop of wire lies flat on a table top. When viewed from ajf,ve j5/pod*.pzf 7zbove, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic field j5p*p 7ozdjfe /,.zvfcaused by this current, outside the loop? The magnetic field

  A current carrying circular loop of wire lies xy4kd6mti li,b+dm pj 6 5gr*:flat on a table top. When viewed from above, the current moves around the loop in a counterc5 mtdrk4:p+j*gxd6yl bi6, milockwise sense. What is the direction of the magnetic field caused by this current, inside the loop? The magnetic field

  The SI unit of magnetidmlli+ ohg 778n: sj+qc field is the

  1 T is equivalent to4u9i v e1 4msyo.sg:jp

  The direction of the force on a current-cacz53ld t1(x cirrying wire in a magnetic field is described by which o lz c13c(dit5xf the following?

  The force on a current-carrying wire in a mag22 2rc;xp 7we*sva satnetic field is the strongest when

  The force on a current-carrying wire in a magnetic fiel*cj gzng/3 jht2,njd 4d is equal to zero when

  A vertical wire carries a current straight up in ab2d fcwx;h8n.lxcxf8s/knq( te-,.eng j +q- region where the magnetic field vector points due northxs;hftxnw2q lnfqb., -d+ e-8jn/ .c8e (kcxg. What is the direction of the resulting force on this current?

  A charged particle moves and experiences no magnetic force. From 8 jre-6jd:a *tvki .qsthis we can conclud*-dai 6kt:8v j.ersq je that

  A charged particle moves with a constant speed through a regiono(v3 czv-ov(- rhgb*a m,.kzn where a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting on thisk3mzo(zb.h(ov -v gar*c nv, - particle will be maximum when the particle moves

  A charged particle moves across a constant magnetic field. The magnetic foq7- mr*md6af9 )b dbetrce on this b97 )rdbmae*m-6ft dqparticle

  A charged particle is injected into a uniform magnetic field such d1loy1sl e u m1tac,38that its velocity vector is perpendicular to the magnetic field vector. Ignoring the particle's weight, the particle w yue la1mot,c1s1dl83ill

  A charged particle is observed traveling in a circular path in a uniform magd 49wdcm98tj znetic field. If the particle 8 c9zjwdmd94 thad been traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e travels in a ;:s- skt*mn1 jr)+v)bky x4 mj( mfnfdcircular path in a uniform magnetic field. If insm 1mk;jk)+:4y( )bss*nxvfrnf -jdt mtead the particle carried a charge of +2e, the radius of the circular path would have been

  At a particular instant, an electron moves wy bys2r:f4ln9 n6 b1leastward at speed V in a uniform magnetic field that is directed straight downwardnw429b: llbf 6y1nsyr. The magnetic force that acts on it is

  An electron has an initial velocity to the soed 6e 9)uyf8scjk69z8zisw*r rt6(rk uth but is observed to curve upward as the result of a magnetic field. The direction of the magnetic ru r)r et96ywe6iksk9f(8 j8sc z6z*dfield is

  An electron moving along the +x axis enters a region where31sdhz uc8pp66k6x2vp c*ejj there is a uniform magnetic field in the +y direction. What is the dip1*v upjcd6ks2 ceh683pxzj6 rection of the magnetic force on the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced by o ,rqw fvs5-5qa long straight current-carrying wire is

  At double the distance from a long current-carrying wire, the stfto2m0hku(ay9d 6+ +fib uq*i rength of the magnetic fiel6o+ma u9*i+y0fiftdqh2 u (k bd produced by that wire decreases to

  Two long parallel wi-)co+jfs(yd* tec m3 kres placed side-by-side on a horizontal table carry identical size currents in oppo+c(s-k d3 yoe*cftmj )site 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 exactly midway between the two wires

  Two long parallel wires placed side-by-side on a horizontal table carry idexh5 m d5j gcm48.kh*gyntical current straight toward you. From your point of view, the magnetic field at the point exactly betwdmggy5* .chmj5 k 4hx8een the two wires

  Two long parallel wires carry equal currents. The magnitude of the forc4g1zs0 dt+ba.xtbadxn* he.3 e between the wires is F. The current in eactedb0 ba4.gs+ h*a.1ndx z3x th wire is now doubled. What is the magnitude of the new force between the two wires?

  A long straight wire carries current toward the gxugu;ia:6ns- i 5yaxy;96up east. A proton moves toward the east alongside and j;9g;giypu ysu 5 6 x-:a6uniaxust 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 toward the bottom opof n4kni, dq k59u weh,m-z,-f the page. What is the direction of the magnetic force it produces on an elek,ikw, pzh 9o4 unmqn 5f,--edctron that is moving perpendicularly toward the wire, also in the plane of the page, from your right?

  Two long parallel wires are pla0(fui0y gt )nr.1pm dkced side-by-side on a horizontal table. If the wires carry current in the same directioufyi1g)0r dn0tmk.p (n,

  Two long parallel wires are placed jwdy 3zfk;3z/ 6ohr m5side-by-side on a horizontal table. If the wir /5k w3o3h6ydmjrz;fzes carry current in opposite directions,

  Consider two current-carryinjevu w,y *.o)2rs6fo34du xbg g circular 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 smaller loop, the magnetic field ayb2v). ed,gfwx6jroso *34 uut the center of the larger loop is

  Consider two current-carrying circular loops. Both v2)z+fsaw/iu are made from one strand of wire and both carry the same current, but one has twice the radius of the other. Cos+fwz vu /2ia)mpared to the magnetic moment of the smaller loop, the magnetic moment of the larger loop is

  The maximum torque on a current carrying loop occursxv4xl yi;g w+* when the angle between the loop's magnetic moment and the magnetic field xv *g;iyl xw+4vector is

  When placed askew in a magnetic field, a current carryingfy:no,p(m2f suik ,w55ada* f loop that is free to rotate in any direction will experie apwy5i*asd offk(5,uf :mn2,nce a torque until its magnetic moment vector

  What fundamental fact underlies the operation of essentially all elec(-klac7 cs5 jzi(+spw tric motors?(ljspak-5c (c+i7s zw

  A circular wire loop lies in a horizontal plane on a table and carrie-l3 + p/fq0gnxxy bj+ss current in a counterclockwise direction when viewed from above. At this point, the Earth's magnetic field points to the north nlj s3 b +qgp+/yx-0xfand 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 spectrometf 7 f x2 ng193b;rec,a,i a rgwd:)brstklz-v2er a particle of mass m and charge q is 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. Tz, :fkcbe2 rvsr3tdal,-xni1 7fgbw9; ra) g2he 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 charged particle passing 3yj80 t 2zwq.z:h lvt)zq:wxn*llgy-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 following, disregard the magnitudes of the fields. In a velocity selector, the particles move toward the east, and the magnetic fie:wlntj2)qvgh3y 0*zw. qtz:l-xlz8y ld 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 ori jsgopzg;7x;: jk5u* iented parallel to a uniform magnetic 7 g:;jg* so;5 zxpjkuifield of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current oub h..s0kncr (f 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 meter cmcz 5y39t.fjjs jq1 ;on a straight wire carrying 5.0 A when it is placed in a c ;.31t j zyfcjq9msj5magnetic field 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 0.050 kg and is in a magneticto) ,v,rdv9tvwyc z/k5/- b vq field of 0.10 T. What minimum current in the rod is needed in order for the magnetic force to cancel the weight of thoc/kt) vw,r vqvbvz5/t9- yd, e rod?

  A stationary proton is in a uniform magnetic field of 0.20 T. What is the magnb9 () e/m(uew/qilgxl5yi mr. itude of the magnetic force oni/m gl9lexeqwrmy./) u((5 ib 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 witht 5,7j3z yf*rtb rxf/u 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 o so8b8a -tysqph og567hc *c7mf $5.0 \times 10^7 \; m/s$ 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 )ojib6he 60sdnorth 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 4;h kq7n le14d tjsgadgz.n; 8$8.0 \times 10^6 \; m/s$ 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 speedo0a3+ p 2;o6 nsfuinzd 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 eui r eko22or-5vilmk 3p.)n(v-oibf9zd; 6x 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 current of 25kr ;bvtb pfi7f2b:z16 A. What is the magnitude of the magnetibb7bf2vt zk:;1pf 6ric field at a distance of 0.15 m from the wire?

  A high power line casd-68 v9e v kg17i6olw khxkke8 0lro(rrying 1000 A generates what magnetic field at the ground, 10 m awa 08 ( l1 8vx69e-iokdl6 ks7rvhkkogewy?

  How much current must f 6ckd(i aujl6(r9gow 8low for $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a lon, h dik27fl-a .zvc)qhg straight wire carrying a current of 5.0 A is the mak)hca zd7-vfiq ,lh. 2gnitude of the magnetic field 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 Apx5 msz,fdqz2/ukknu)6:+j h in opposite directions. They are separated by 40 cm. What ms: u) dzkjkpfn 2/ zx5qhu+6,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 2w; :m)h;9h iq0isux lt0 A and 5.0 A in opposite directions. The wires are separated by 0.2w s):tx;l9h0uiqi ;mh0 m. What is the magnetic field midway between the two wires?

  Two long parallel wirph1e6j+iwmib+cj7 f 1cx053:pnrc ec es carry currents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.2 mecb1 i+jh5xeprn7: p+3cj61i 0 cfwc0 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 theuva5q v7-t4r5pv0c x xy6 jul; same direction. They are parallel to the z-axis, and they pasx-64lv rxqyvv t a;ju5pc 7u50s 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 oppositst85- u:fh tkjqurs 94fc ;yvsb );d(de direction. The wires are separated by 0.30 m. Find u9u b tt v r)(dd5j 8;:f-skychsq;sf4the magnetic force per unit length between the two wires.

  What is the magnetic e ;9-(9tzwmb z6 bzjgefield at the center of a circular loop of wire of radius 4.0 cm when a currengb;e6w-9mzzbje tz9( t of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 tu9j cz t,0vd.lurns of wire. What magnetic field is produced at the center of the solenoid when a current of 10 A floc, zv.tl j90udws?

  A solenoid with 500 turns is 0.10 m long and carries a current uz 7z vx-o.+zkof 4.0 A. What strength of 7zz .uzxko-+vmagnetic field will it have at its center?

  How much current must pass thrrn h0p oe7k,ev75 nshixqx2a.9q cg1w qt8n;9ough a 400 turn coil 4.0 cm long to generate a 1.0-T magnetic f9w invnt0x827g o rk7eqaqh p;15hqne9c x,.sield at the center?

  How many turns should a 10-cm long solenoid have if it 6e tlhbj.lw( lvd u/i2:hi*:k 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 rxb/3bf /yj3:w9 deabm )j +dpqectangular loop of 120 turns that carries 6.0 A if its dimensions are 4.0 cm x 8.0 c9 b3jxd y/)/fb:wqdm3 eja+ pbm?

  A circular loop of wire of radius 0.50 m n6clj6;,42m6o z nw,m0oj tlde)aqzq is in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. j)n2wqen6 ;o zqjd0l6,mac6 4 lt zom, What is the magnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of crduh wt 9vwuwj7 9sb1:k7p3 sls nt;:h- p-or(doss-sectional 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 curre xmfxrq3q 1f(3q/2nzhnt of 2.0 A is in a magnetic field of 3.5 T. The loop has an ar3qnqh2xz f/(f1 qmr3x 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 2e gmso9z6v(n 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 when69sn(mevg 2 oz the plane of the loop is parallel to the magnetic field?

  A circular loop of wkdr(*8 s,zloaire 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 plane of the loop is parallel to the magnetic fi*8d ,z(lsrkao eld?

  A circular wire loop of area orms+/-x61nb-+( kuop tvdha$0.25 \; m^{2}$ 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 spectrometer6-y1ez+x *2 mvx a ckw+aucmon(h8yz9, a 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 veloxv6qge1npzl y1 +e4vr5 pva5c8;ec e+city $6.9 \times 10^6 \; m/s$ 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 op1 gx+ l6 h/*ofqmkm;df 1.0 kV and then moves into a magnetic field fqphd;go1* /6mkmx+ l of 0.040 T. What is the radius of the proton's resulting orbit?

  A proton is accelerated from rest through 500 V. It ene if+2es .cc t+cprioba5o45: ters a magnetic field of 0.30 T oriented perp5tasr+ceo :c p 4fi+5eoic.b2endicular to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potential difference of 10 kV h5arrwn1i1j;9w1 r rxgu3 cb 2b,9vi nbefore entering a velocity selector. If the B-field of the veloc31uvw r 52r nac;i9, i1xb1rb9whn rjgity selector has a value of 0.010 T, what value of the E-field is required if the particles are to be undeflected?