If the north poles of two bar magnets are brougo p1os 1v/1me+6ntgb q25ygxhdhi)j5 ht close to each other, the magnets will5o6 /1ydnqsov ) h pb ih+mtx15g21jge

  If the south pole of one bar magnet is brought near the n y w*j8r97gwbqvz*u 4cz /v.bworth pole of a second bar magb8v /*gwwv r j9qbw7* zuzy4.cnet, the two magnets will

  If a bar magnet is dibu)0+5ji ) zo tedt)gx th+qi)vided into two equal pieces,

  The Earth's geographiceq,:k 2u20a n jdv uzyq*ki1p bl75rvlr16 t2b North Pole is magnetically a

  The south pole of a magnet points th( v ii/g,b:kvoward the Earth's

  An electric current prk 2 (s.*qhe8n gac :ftcjg2p.coduces

  Which of the following is corre 6sdq kk0;ibxa644 tmkqz ;pen)vj.q5ct?

  A vertical wire carries a current straight down. To the east of this wire, 1jr:nxnl mhzc r (9-+uthe magrl(n1 r:-jcmzu +hx9nnetic field points

  A horizontal wire carries a current sheuu(t+ 3(- fy 1sy:ic:yon chtraight toward you. From your point of view, tht hn s+(-u1fy:hc y(o3uci :yee magnetic field caused by this current

  A current carrying loop of wire lies flat on a table top. When v:yliy7 lnu 5n:iewed 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 loop? The magnetic fl:ny:5nl7 ui yield

  A current carrying circ8ao d/)ka o5 xvd1,iv3e:zzxqular loop of wire lies flat on a table top. When viewed from above, the current moves around the loop in a coun:zad/i,ao3qz kvv 8 ox d1x)5eterclockwise sense. What is the direction of the magnetic field caused by this current, inside the loop? The magnetic field

  The SI unit of magnetic vff; (:hhgwo6uxl-:x g 5x .xufield is the

  1 T is equivalent toi d m.wra203ds

  The direction of the forcedv;jzpb(bmj2 )l 8ha- on a current-carrying wire in a magnetic field is described by which of the fob;v za(p jdjm8l)b-h2llowing?

  The force on a current-carrm-pg tlc, 4gq,ying wire in a magnetic field is the strongest when

  The force on a current-carrying wire in a m0y; 8z xj hco;, zjmzr9+mp4goagnetic field is equal to zero when

  A vertical wire carries a current straight up in a region;xof 24vqs 1kx where the magnetic field vector points due north. What is the direction of the resulting force on this curr14 o2vxsq xfk;ent?

  A charged particle moves and experiences no magnetic ford - / k1r-ag4 8gt-qi zejrwoxb73bx8oce. From this we can conclude that-izk7r qx b3g- t e/4o8agxdro8j-1bw

  A charged particle moves with a con 0qwz:nbzcdv/7ha r //stant speed through a region where a uniform magnetic field is present. If vcah/7n r ://dzwb0zqthe 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 magneg8l7uv/.mw0vcn3pfj. ac2f n tic field. The magnetic force on th0ln 27fa3. juvcwvnfc8m/.g pis particle

  A charged particle is injected into a uniform mc/83r*co ymle qy hg4.agnetic field such that its velocity vector is perpendicular/ye3r o4g*hcqyl8. mc to the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveal0k )af5yero g2mr -ztw76 u.ling in a circular path in a uniform magnetic field. If the particle had been traveliegwmu)zky 2fo-a . arr 6lt705ng 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 un2s2zjp mo i meyslnw*57/ 1nf/iform magnetic field. z/si 57pyfe/m 2jw1lns2 o*mnIf instead 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 j0lju,od; isg4hb9s- speed V in a uniform magneti-i9u;, dsh bj4glo j0sc field that is directed straight downward. The magnetic force that acts on it is

  An electron has an initial velocity to the south but is observed to curve upwarr bc - )waeqdw37ai 00/,uadjyd as the result of a magnetic field. The direction of the magnetic fieabw a7qd/3ja rciw0), 0uyd-eld is

  An electron moving along the +x axis enters a region where there .6hlj3 pzerp; is a uniform magnetic field in the +y direction. What is the direction of the magnetic force on the electron? .3;lr6zpp jeh (+x to right, +y up, and +z out of the page.)

  The magnetic field produceddili,pg 65h)epkfqb 6 fe- g7* by a long straight current-carrying wire is

  At double the distance from a long current-carrying w s-imcqlk0.6b5ndx 6pa*crgxhpd1 ( 1 ire, the strength of the magnetic field producedq0r c6 dklb- 1snh6 x*x p5imcgpa1(.d by that wire decreases to

  Two long parallel wires placed side-by-side on a horqg8;wpgb12df izontal 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 qw;b8 1gfd gp2the point exactly midway between the two wires

  Two long parallel wires placed side-by-side on szp+q0+g d(kbuwi;p d- z8a u4a horizontal table carry identical current straight toward you. From your point of view, the magnetic field at the point exactly betwee;ugp -zuia8b(+z+pdk4d0wqs n the two wires

  Two long parallel wires carry equal cmt7* fw/6+ui-ce l ubvurrents. The magnitude of the force between u* f7vl/ -ic6wm+tubethe wires is F. The current in each wire is now doubled. What is the magnitude of the new force between the two wires?

  A long straight wire carries current toward the east. A proton moves toward ;mbtx z2 cm-f95uhq;othe east alongside and just south of the wire. What is the direction of the forctxq; c fmu9 mz-ob2;5he on the proton?

  A wire lying in the plane of the page carries a current toward thepmsw:- jc.++b sb1e zz:hg z:e bottom of the page. What is the directih b+mb1jp:.scsz: g:we+ ez-zon 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 sidete+in u:sw:y:; rco a3-by-side on a horizontal table. If the wires carry current in the sameco+iut:sn:are:3 y ;w direction,

  Two long parallel wires are placed side-by-side on a horizontal table. If th,t /0lcy/nl g4ox/ba tx(/vf be wiresy0tvlng// c/x(f/x ba tl, 4ob carry current in opposite directions,

  Consider two current-carrying circular loops. Both are made bz; hycazy.z/2i)0moj uy )z7from one strand of wire and both carry the same current, but one has twice the radius of the other. Compared to the magnetcbz.o0yh/)7a m j z zz)uy;2yiic field at the center of the smaller loop, the magnetic field at the center of the larger loop is

  Consider two current-carrying circubngf9 buwt *52lar loops. Both are made from one strand of wire and both carry the satu2nb*9f bg 5wme current, but one 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 carrying loop occurs when the angle ber s7w-a)p- diitween the loop's magnetic moment and the m-)ir7wsidap- agnetic field vector is

  When placed askew in a magnetic field, a current carrying loop that is freql n 1m)r2d5iauh msefaxf91 h8/4xt :e to rotate in any direction will experience a torque until its rq15xle)tua924n/f a:i h smd fm8hx1 magnetic moment vector

  What fundamental fact underlies the operation of essentially all electric motorrb qjcg.6v 0xh ;4w; jwr48fvzs?44jvjrbcr 0;ghv8w6fwqz; x.

  A circular wire loop lies in a horizontal plane on a ejd2+alqzxh z2- /ir1 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 tends2jaz rx-l+ /diqh 1ez2 to lift 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 is accelera7jje ./dri wdl9thpae u (2t91ted 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 velocittiepl1.h(92uja ewrdd9t j /7 y 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(f q+e qt22yrv 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 following, disregard the magnit +2yq2f(v qertudes 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 9 gtr3prqh.68ael 3oh oriented parallel to a uniform magntqrl 9oh3ah36pr g8e .etic field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a directionht0sl:yt 7 c(q 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 5mw mq3el8 p jfx+:by5carrying 5.0 A when it is placed in a magnetic fiejqwmp 5bfml+ey583:x 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 t6 rj-zrp 6dwrv) 03o6x 4eojua mass of 0.050 kg and is in a magnetic field of 0.10 T. What minimum current in the rod is ertp z j)dvojwx6 4o3r-660ur needed in order for the magnetic force to cancel the weight of the rod?

  A stationary proton is in a uniform magnetic field of 0.20 T. What is tgi. w9-2 w dpfsma0 qzwv91mp-he magnitude of the magnetic force on the pro wmdp 9ps0vf2 -z.aw9mq-i 1gwton?

  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 jr ;uh4jrpi (a* ev2+ ekez;0yspeed 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 of 2;u4:y hvzer+elf1; ozp/8l 8easukv$5.0 \times 10^7 \; m/s$ 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 nzq-dr/es0zml//eh ( :be lc,morth 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 arxmcejv/ *yq;zk) x9brnvf -0 .q9 oq9 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 wi:ts)g3 bcalx 8th 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 oje-c k - y q,m;f-mg1ryzyc65rf $3.0 \times 10^6 \; m/s$ 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 2jsjk )g8acx6vp ),q bis the magnitude of the magnetic field at a distj s ja)q2pv6), ck8gbxance of 0.15 m from the wire?

  A high power line carrying urg3u3zdl sn9 y) ;qx61000 A generates what magnetic field at the ground, 10 m awayyz93 dl6n x gurs)3;uq?

  How much current must flow f h+hnwavjn(:p -etv d:a.9h 4hor $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long straighiw,o j 6/t)jfvsjzty yf9;djz .-/:zxt wire carrying 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 field o6w.9oj:,)yyfjjsvtzd ;fx- zj/ti /z f about $5.0 \times 10^{-5} \; T$?

  Two long parallel wir vdoyacfi2i . (gxa8))es carry currents of 10 A in opposite directions. They are separated by 40 cm. What is the magnetic field in the plane of the wires at a point that is 20 cm from one wire2ix)a vig y.)oa8c d(f and 60 cm from the other?

  Two long parallel wires carry cur9+g q: 5 jauo7x2qzfwsrents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. Wha7q:xuasw q25g+ojf z 9t is the magnetic field midway between the two wires?

  Two long parallel wires carry curr6 /r9y 0aonn1vk+cxdeents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. At what point between the two wires are the contributions from then9y ckvn06 deo1x+ a/r two wires the same?

  Four long parallel wires each carry 2.0bb9ek 4cjv 7;*gjl9)d5ysn xt 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 cm positioned in the x-y plane. What magnetic field does one of the wires 5)*4bkelg j t79sjvyn9bx;c dexperience due to the other wires?

  Two long parallel wires carry curren2*j ;xp7q tap)yt+kaots of 5.0 A and 8.0 A in the opposite direction. The wires are separated by tyqo2;* )t7p +pajxak0.30 m. Find the magnetic force per unit length between the two wires.

  What is the magnetic field at the center of a circufs wckx:+fhb 46ba(c /lar loop of wire of radius 4.0 cm whenf+f/ a(sw46: cbbkhxc a current of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 50rv1a;nq xd0y o*rtt2695ah rv00 turns of wire. What magnetic field is produced at the cenxq0nd* h; a5t rr6t9 ov2yvra1ter of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and an,,q 82s-ivgct*bk s*rh2do carries a current of 4.0 A. What strength of magnetic field will it have at its atc *sid- qnsoh8*,2k r g,bv2center?

  How much current must pass through a 400 turn coil 4.0 cm long to gnchsqglh 7,o;m1d 8 0denerate a 1.0-T magnetic field at the cesngq 8hlh7d0o;1cd m, nter?

  How many turns should a 10-cm long solenoid have if -h7qb zivfm+6 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 turnqnax2vj -9u )if5tpff lv 068fs that carries 6.0 A if its dimensions are 4.0 cm x 8.0 cv8 lf-fj9f xn5)p fv2q6ut0 aim?

  A circular loop of wire of radius lf6r3kx*0j qg pkwc1qho;r7. 0.50 m is in a uniform magnetic field of 0.30 T. The current in gj0l3 *w;c7okqhfx p1rkqr .6the loop is 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 cross-sectifvzfmim v-j*+7+.qg+wkq :b. vap* wmb).h uj onal 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 o *sf0qgo08 jv(i ly,xwf 2.0 A is in a magnetic field of 3.5 T. The loop has an area j 0iq*ow,gyvfs8( l0xof $0.12 \; m^{2}$ 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 v p0(0mgo( wpuradius 0.50 m is in a uniform magnetic field of 0.30 T. The current ig0(pwmvo 0 up(n 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 wire of radius 0.50 m is in a unol w;0*dw c3tsiform 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 magcd*wo3ws;l 0 tnetic field?

  A circular wire loop of sgo 47 o8del7i:kyi-jarea $0.25 \; m^{2}$ 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 spedvio.-96 ;cc buu3qim 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 w- 3h7u.nm tpkrith 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 thronyd 9 f37yp)fon8ko4a ugh 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 resulting 9a 7on8) fokp3 f4dynyorbit?

  A proton is accelerated from rest through 500 V. 6ds:o*f e 6mlmIt enters a magnetic field of 0.30 Tm6 os6*:md efl oriented perpendicular to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potential de p gs1odlbrk2a.6 r4-ifference of 10 kV before entering a velocity selector. If the B-field of the velocity selector has a value of 0.010 T, what value of the E-field ise l 1r-42srbpk6 gd.ao required if the particles are to be undeflected?