If the north poles of two bar magnets are b gao; vwrr16tx )c1wyk/w-)k krought close to each other, the magnets wi-r 6k/)kc 11vkwo) gt war;wyxll

  If the south pole of one bar magnet is brought nea/ zm5h9kt:0, gxd do2 lo8ooiwr the north pole of a second bar mwo :5kg0oih9l d2/t, 8doz omxagnet, the two magnets will

  If a bar magnet is diviknfnkyevs )wc)u34t 9bw;9 4kded into two equal pieces,

  The Earth's geographic North Potl sd 2nj-5+ mf uhnmnbo(tuzw87g:, )le is magnetically a

  The south pole of a magnet points tow- wy9)ei 7(q,jn p/qf0 fymt j.pox9fsard the Earth's

  An electric current prodw8g :8 m)j lh;b1epirti9+gtbuces

  Which of the followinzvdu0z2iku6 svkl s)8 )i:pei1o f3r,g is correct?

  A vertical wire carries a current straight down. To the east of this wire, t (.6+f ig vuun+xqnosi-i-*guhe magnetic f6uo+n.v x (ing*u- fs-gi uqi+ield points

  A horizontal wire carries a current straight toward you. From your point of vieqhugi ol1,,z 3w, the magnetic field caused by this curren13l,oigh, zuq t

  A current carrying loop of wire lies flat on a table top.a6conl;3x n ju:n9;m*6 zpyr:d xyl9 q When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magneti:l an 6x3 cdory9p; qxzu ljnn9:;6y*mc field caused by this current, outside the loop? The magnetic field

  A current carrying circular loop of wire lies flat on a table tolzj8g ( hfd9 o5-*tzqvp. When viewed from above, the current moves around the loop in a counterclockwise sense. What iszz*h-jgld95vqof t 8( the direction of the magnetic field caused by this current, inside the loop? The magnetic field

  The SI unit of magnetic 6iun1v d(xus 1mg jn(j-y:it2field is the

  1 T is equivalent to( :v95+mo 77ge*qa x igejrqfg

  The direction of the force on a currjik:3v o 1qxuuw:jg)4 ent-carrying wire in a magnetic field is described by which of the following:j1 xigukj:u)vo43q w ?

  The force on a current-c+duhq;s -s: smarrying wire in a magnetic field is the strongest when

  The force on a current-carrying wire in rc+u l8iy*l),e bkvxuey;5z2a magnetic field is equal to zero when

  A vertical wire carries a current straight up in a region where frgpfyi,z4o 2 x(o7v,the magnetic field vector points due north. What is the direction of the resulting force on this cur4 rgvp,,7f y2iz (ofoxrent?

  A charged particle moves and experienctt)/vu*,sz q.g1o,p uv f l8bves no magnetic force. From this we can conclude thatpvu,g ftsoz ,u l8*/1qvb v)t.

  A charged particle moves with a constant speed thru+h; c0tc4bp s ykh+y7ough a region where a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic fs4y+ht7 bkpyc;h+ uc0orce acting on this particle will be maximum when the particle moves

  A charged particle moves across a constant magnetic field. T ;5gca:o1ju6m :4q:kgg unkfj2mm9vmhe magnetic force on this partima k6o mv gj9ugf142c5;k:mqu mgn:j:cle

  A charged particle is injected into a uniform magnetic fi nn2x3e- rnzu b7hpmx9 ,2q:qteld such that its velocity vector is perpendicular to the magnetic field vector. Ignoring the particle's weight, the particlexpbxu3znh2q n 7,:9nrmqet- 2 will

  A charged particle is obf+t+-f,m.gecg4a a dhn.n) u jserved traveling in a circular path in a uniform magnetic field. If the particle had been traveling twice as fast, the radius of the circ. jn+f,+en)a mcg ft-ua hg.4dular path would be

  A particle carrying a charge of +e travels in a circular path in a uniform magnh*id/ al qsr59etic field. If instead the particle carried a charge of +2e, the radius of the circular padsaq * li9hr/5th would have been

  At a particular instant, an electron moves eastward at spe ctb 2ha kk5;hshhg:*7ed V in a uniform magnetic fiel bsat72g;hch*hk 5 k:hd that is directed straight downward. The magnetic force that acts on it is

  An electron has an initial velocity to the south buth6drf yb to.vo6:afyj (7l;8o is observed to curve upward as the resul:fy7horj ol b o6(6y;v8at.fdt of a magnetic field. The direction of the magnetic field is

  An electron moving along the +x axisx mzy.r14cb h+12rzagxmzn8, enters a region where there is a uniform magnetic field in the +y direction. What is the direction of the magnetic force on the electron? (+x m1r ,2rabmn81+y .4c zxzgzxh to right, +y up, and +z out of the page.)

  The magnetic field produced by a long straight current-carrying wire (wij)mpvud7,fau-o7 is

  At double the distance from a long current-carrying wire, the /g2gdak2lc,p6 gz6ja6s.cdkg6r a ) xstrength of the magnetic field produ kz)6 ag26c2d6d6kgga/jc lrg .p,xasced by that wire decreases to

  Two long parallel wires placed side-by-side y jv+,;s-ka xron a horizontal table carry identical size currents in opposite directions. Thev+rj;x-a ky, s 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 horizz assd;-me( v::llv0 zontal table carry identical current straight toward you. From your poin;l e zsz-v:samdlv (:0t of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnitude of the forcelk*9iv sc1 t st2x7z3o h:5qxg between the wires is F. The current in each w:igx tscqvokt51 279*zlxh s3 ire is now doubled. What is the magnitude of the new force between the two wires?

  A long straight wire c,6wujz ukjcl2hpa/o3c4 3+c qn md5) karries current toward the east. A proton moves toward the east alongside and just south of the wire. What is the direction of the force o6cmcon3)jukkc4apu /z+q3 d5 ,2jhwln the proton?

  A wire lying in the plane of the page carries a current to shb2cqbvh(e:p- vlzot.5+z8 ward the bottom of the page. What is t.( 5slcv:bhb2q+o 8z zh-pvet he direction 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-byi b. gd fu7*cxg8w(nx2mbqj+ )-side on a horizontal table. If the wires cn .(wdcbg72 )umjxqx*fib +g8 arry current in the same direction,

  Two long parallel wires a nka eva;s5336jmh -sb- atyil ma6b(;re placed side-by-side on a horizontal table. If the wires carry k-jath ya6a(eml5sai m6 ;3n;-s3vbbcurrent in opposite directions,

  Consider two current-carrying circular loops. Both arsv 4xzq0 bf jx;r3a28i(:bwjme 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 ;xab:f 4 (j23mz i0qbvrwsxj8 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 strandin6zfp27*rme8ye -yp vg 0 6yc of wire and both carry the same current, but onegf2 i76y- veep* 6ymp0czry8n has twice the radius 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 current cv x 8/.;(jes ezpup -q.iogm6xarrying loop occurs when the angle between the loop'sxvq/pegij;- 8z..meo x 6u(ps magnetic moment and the magnetic field vector is

  When placed askew in a m ch(uo)5 gj 7ngre(c,kagnetic field, a current carrying loop that is free to rotate in any direction will experience a torque until its mag7 )c(kh gju r5nec,(ognetic moment vector

  What fundamental fact underlies the operation of essentially all electric motpwc *s 2kyt.y )7nxmq1ors?cwy pknx)2*sm .qyt1 7

  A circular wire loop lies in a horizon gor3i07;yglb -dj (c+8yknuetal 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 of the torque caused by the currents interaj-; 80u7+ l rok3nid(ybcgegyction with the magnetic field?

  In a mass spectrometer a particle of mashj-ont6t/e;m vz9i 5 as 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 semiiv-aejoz /5hnmt96; t -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 o6* )y(jc6ummae (ofa;tjgt o7 f a charged particle passing through crossed electric and magnetic fields. The forces exerted by these fie )cj7 e a og((m;tyma66to*fujlds 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 oriented par cv he1k2 xmc*uss,5q2allel to a uniform magnetic fie 5uh2s m2*vc,xs 1kcqeld of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a curre;nbz(a2 e-cv l. -ixm; nz5bydnt 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 meter on a straight wire carrying 5.0 oipy,92cv )bn(msm;:ur xx-4hur-t kA when it is placed in a magnetic field of 0.020 T? The wire makes at- )yirmuo:x9v xc4 ;mnrb-sph2(, ukn 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)w x hx)x77) ljlcpo;x magnetic field of 0.10 T. What minimum current in the rod is needed in order fxw;xl7)hp)o)c xx j7lor the magnetic force to cancel the weight of the rod?

  A stationary proton is in a uniform magnetic field of 0.20ta gn1nburv 8c,yg7(mv8 qf ;5 T. What is the magnitude of the magq7 b(vt8 nrnagcf;v,8u15m y gnetic 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 ofy t zgz/vuy;5) $5.0 \times 10^4 \; m/s$ 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 zmyx- bqz4y,)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 north wittp22 qj(7hgq lh 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/rv6w9cau3m7l ftox: (1upcn 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 with6(w qk-ue gl a(hhsj96 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 oa0s afndve irn*yvxu3),4e 6.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 A. What is the man;hi)bxk7g weej +f5-gnitude of the magnetic field at a distance of b)+gh7exwjk f i5 e;-n0.15 m from the wire?

  A high power line carrying 1006+nhjujm anv:+xf0 p+ )x u;nz o73xif0 A generates what magnetic field at the ground, 10 m away? nuh+37imu fjjo0z6fn v na+;x:xx)+p

  How much current must floqdda)ko3osvpt 3;2;/1 k-li ey noho5 w 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 carrk5 cy* z8 gae*bw5l,teying 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 mz5gl*y*a k,tb8w5e ec agnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry y) 1yx qko49nir9o:jlcurrents of 10 A in opposite directions. They are separated by o9x1yry n)k94jqi: lo 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 ovc3 9y*mzc +6j0qctccpposite directions. The wires are separated by 0.20 m. What is the magnetic field midway between the twct+*cy0j c396zvc m cqo wires?

  Two long parallel wires carry currents of 20 A mj/n: nzs7g)uand 5.0 A in opposite directions. The wires are separated by 0.20 m. At what point bet7 /zun )jsg:nmween the two wires are the contributions from the two wires the same?

  Four long parallel wires each carry 2.0 A in the same direc5d4x9x*sd uvc tion. They are parallel to the z-axis, andx vc4du*95 dxs 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 dir ze qj9hduou*:6 r2yrw6-uf(zection. The wires are separated by 0.30 m. Find the magnetic force per unit lu 66royzd*w9q2j- hu:zeuf( rength between the two wires.

  What is the magnetic pro4/bxhuu4ts:n6d 5 field at the center of a circular loop of wire of radius 4.0 cm when a current onbou h:54u6r/ tp 4xsdf 2.0 A flows in the wire?

  A solenoid 20 cm long i 0iyw2sz 1;zf-ce *ulis wound with 5000 turns of wire. What magnetic field is produced at the ic lfz*s2 y0w ziu-1;ecenter of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carries a current 6wa e)kg b1.gsof 4.0 A. What strength of magnetic field wik1sagb)g 6ew .ll it have at its center?

  How much current must p 5oa5ozyaf8gw t j( e*,7rag9 :u*loueass through a 400 turn coil 4.0 cm long to generate a 1.0-T magnetiyo, *oa 5*l guwfg (ja95eoatu8z:re 7c field at the center?

  How many turns should a 10-cm long solenoid have if it is to gener+afq5 kw) dg6cate a $1.5 \times 10^{-3} \; T$ magnetic field on 1.0 A of current?

  What is the magnetic moment of a rectangular lj89y 2 kqsj a0sw80nxvoop of 120 turns that carries 6.0 A if its dimensions are vq2s0 n8ax0k8wjj ys 94.0 cm x 8.0 cm?

  A circular loop of wire51 c)ikk31orecg* rwo of radius 0.50 m is in a uniform magnetic field of 0.30 T. The current in the loop ikog) 11orwic3 crke*5s 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 crossfm)q6 a9ehhd 0 e2am7r-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 current of 2.0 A is in a magnetic field of 3.5 T ar)k;ww*+ws o. Thew row;ks)+*a w loop has an 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 magnetic :y:8ulzqfkkrv50(jk 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 magjuy (8:5vkrzfqkl :k 0netic field?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic fiel)g*1 ke igtlf8d of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane of gtf*1eg)8i k lthe loop is parallel to the magnetic field?

  A circular wire loop of are7jq nc)lgm8da0 cfvm6*v3 of(a $0.25 \; m^{2}$ 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-charb9 0- scr4+yo.qubjd mged 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*jglky uwiz z5w,h1aj2vo.- .9.rpp x 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 througvmim- f+uw i*gr81 0yah a potential of 1.0 kV and then moves into a magnetic field of 0.040 T. Whayiamm*gu- r80ifv1w+ t is the radius of the proton's resulting orbit?

  A proton is accelerated from rzpzu-h*6m yv (ud.dy: est through 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Determin: m yzuhz(d*v6 u.-pdye the radius of the path it follows.

  A beam of electrons is accelerate 5wwa7.:xx4hm2uyr 9 d*jnridd through a potential difference of 10 kV before entering a velocity selector. If th2hn5*9dj47:xry dwi awxrm. ue 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?