If the north poles of two bar magnets are bron0i52ticio +ea vog/ u7f9u*h ught close to each other, the magnets wilahi7c/+ onf 5g0u*2iei 9votu l

  If the south pole of one bar magnet is brought near the north pole of a seconw- o3uqtp i1h3xjj8 *od bar magnet, thei1uxq hop *3jow38jt - two magnets will

  If a bar magnet is div1gn:vpzu(a0kc 6jm 7ul hl3 9nided into two equal pieces,

  The Earth's geographic4;e nc so7ebi:(gf*mt North Pole is magnetically a

  The south pole of a magnet points toward the(ncr.5wkcgy* Earth's

  An electric current produzgdv 1qq1d k*sb o2v-y s(m uq1n2m6w8ces

  Which of the following is correc7ppqr d 0o ev5no)*hn(stph7ry63 7ezt?

  A vertical wire carries a current straight down. To t:7m rlqhrjx e0w.p9,oxp( . efhe east of this wire, the magnef w(r7xqhe0pr, xl ..mpo:e9jtic field points

  A horizontal wire carries a current straight toward you. From your po*zg.bz5 ho0k-:mc jmri ijt..int of view, the magnet.g5jiz: ckbm -*0jh.ozt.irmic field caused by this current

  A current carrying loop of wire lies flat on a table fiqua84r8fs0 n ;j; uwtop. 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 loop? The m8 uj;f wqnafi0r;4su8agnetic field

  A current carrying circular loop of wire lies flat on a table top. When viewed qu s;f7ay(03n es0p wgfrom above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic field caused by this current,p7neyw3uf g;a0q s 0s( inside the loop? The magnetic field

  The SI unit of magnetic fie4hff..7o2a h0y jis)qrc)s myld is the

  1 T is equivalent to e,dzf5ztfln+- k8nefkv ;4* a

  The direction of the force on a current-carrying wire in a magnetic jc:6h i v h1jvnp+t+mqi w.6t.a5ccr9 field is described by whinwavcqj jphr.1:iiv tc6t m.+ 6c+59hch of the following?

  The force on a current-carrying wihq1c2 y;*v7pz ,i qnu3tbjh y2re in a magnetic field is the strongest when

  The force on a current-carrying wire indmiu) x3nyytug io :2 gb8r-0) a magnetic field is equal to zero when

  A vertical wire carries a/)kx7 jqz;oob current straight up in a region where the magnetic field vector points due north. What is the direction of the resulting force oz;ob)k /oj7xqn this current?

  A charged particle moves and experiences no magnetic 0idlolr n* kjw:3ib-;f d jc*0force. From this we can conclude tha* o;d: fl- j0brkic*i3 0ndjlwt

  A charged particle moves with a constant speed through a region where a unifor0x/eg2pzt2 +ky +zcmcvui04tm magnetic field is presentxzugzty+0/ cv4ti 0c22em+k p. If the magnetic field points straight upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle mo5j03i9 rjx4t+ s ipwsrg 6x*vqves across a constant magnetic field. The magnetic force on this partiq x*95j4stripw+ j svgx03 ir6cle

  A charged particle is injected into a uniform mag 1:sm dm7kv5tfnetic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring ths7tf: k51vmd me particle's weight, the particle will

  A charged particle is observed traveling in a circular path 2har0 jk+d* ph17d . go2uwmrqin a uniform magnetic field. If thq*wa0krp1ghjho 7d+ u.2md r2e particle had been traveling twice as fast, the radius of the circular path would be

  A particle carrying a char/) n:u6fz2y .ai7x0ufvd zuzmge of +e travels in a circular path in a uniform magnetii207/zyfav6 .d:)z z f uumuxnc field. If 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 speed V in 06/*vxp 2ex ckgumaa3+*bd ssaq j u80a uniform magnetic field that is directed straig*ejd 03sv *kmpausuax60/+2qag c 8b xht downward. The magnetic force that acts on it is

  An electron has an initial velocity to the south but kz:u8zpgn5xyy- cl5v .s2 s5g is observed to curve upward as the result of a magnetic: luc5kxv8gzy nz sp55-.2ygs field. The direction of the magnetic field is

  An electron moving along the +x axis enters a region where ther* kxzjr6wkz:c 8a2c m*e qx+ zrmk1u9+e is a uniform magnetic field in the +y direction. What is the direction of the magnetic force on the electron? (+x to rightmk+r w6em+:xqk*kxc8*zraj zz u91 2 c, +y up, and +z out of the page.)

  The magnetic field produced by a l/e(u 6stwpegb kk* .7mong straight current-carrying wire is

  At double the distance from a long current-carrying wire, the streng 3jpmj78ur vm2th of the magnetic field produ p8 jr3v2mmju7ced by that wire decreases to

  Two long parallel wires placed side-by-side on a horizontal tabov t, j*qf) vh4 jihh2kr56k:rle carry identical size currents in oojkvv, * hqi62 h 4:jhkf5tr)rpposite 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 t9v6 zs, kvmf2x(jh0 ktable carry identical current straight toward you. From your point of view, the magnetic fsk0( k t2zxjv9mf6,vh ield at the point exactly between the two wires

  Two long parallel wires carry equal currents. T8kodzz7 zewrzec2- zt5d ) 8t0he 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 between tz2z8)ekzw -dz 0z7c5odtte 8rhe two wires?

  A long straight wire carries current toward the east. A proton mo gk4sj,88idjcves toward the east alongside and just south of gikjd4s88,jc 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 of tlc*k m:so- 5y/giui5 s0rfbr0yld h.t l1;t1dhe page. What is the 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 ri*d ilt5h0k10dc 1ysir:.t/gmsfl urlb ;yo-5ght?

  Two long parallel wires are place-av2ne2 m4 /9sdz0z auh ugw9fd side-by-side on a horizontal table. If the wires carry c2m s49zwf 2n0zu-/aaeh9dvugurrent in the same direction,

  Two long parallel wires are placed side-by-side on a horizontal tablyn t09mp 0(1kcr.ye swe. If the wires carr0pkm yy91 esrtn.c w0(y current in opposite directions,

  Consider two current-carrying circular loops. Both are made from one strand o w9 )2fmqt6ldxf wire and l)9f q2w6xmdt 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 at the center of the larger loop is

  Consider two current-carrying cix07g d jwk-/pjrcular 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 moment of the smaller loop, the magnetic j/k w0jpx7d-g moment of the larger loop is

  The maximum torque on a current carrqp1tnzmnw0f cf(b7+hlp 1f, :ying loop occurs when the angle between the loop's magnetic moment and the magnetic field vecto+h:(f1bl0, pm7nff qzc1tw n pr is

  When placed askew in a magnetic field, a current carrying loop tox xp+k815ayt u*ykkme s,j37hat is free to rotate in any direction will experience a torquxo5akx *,+ptm jke7 1ysky u38e until its magnetic moment vector

  What fundamental fact underlies the operation of essentially all electric mv.q-a9r bf(+i8muhdm otorsubqa+8 dm9v(mrf i-h. ?

  A circular wire loop lies in a horh32zi/ zngq.1lp5u 7dyilb hzh y3 h4(izontal plane on a table and carries current in a counterclockwise direction when viewed from hyq/l2 1d zi(b4zh.53 zug hyn ilh37pabove. 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 interaction with the magnetic field?

  In a mass spectrometer a particle of mass m and c ckndmy3 .3ru1z huj7ki758yk harge 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. knkr km7iy 5 j18uu3d .3cyzh7 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 charged particle passing through crossed ;0xb;mls amb3electric 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, b 0a;m 3lsbx;mthe 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 lhv,,eb,kg6ioriented parallel to a uniform magnetic fihki,e6 g,lvb ,eld of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a curren18va o, khe(c5uay k)rt 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 ca2y 2l)uqbr cpncmw7l (:tq+n.rrying 5.0 A when it is placed in a magnetic field of 0.nmwy rqcl 2 :.n(qb +2tc)plu7020 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 magnetic uq :w9e(hd(+a c o;9ghf8htfsfield of 0.10 T. What minimum current in the rod is needed in order for the magnetic force t:esg uh 98f f;9d(w+hch(tq aoo cancel the weight of the rod?

  A stationary proton is in a uniform m7kgy +xuhk:-hagnetic field of 0.20 T. What is the magnitude of the magnetic force on :yhx7ug k- kh+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 wi 2x0zv) -wla 5lq4gy3p-uoeg; 4oag jsth 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 speb7g t1;viz52,4g tm pvd*f nx, aegja.cw;y/xed 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 wit8tskxke: *jf( bj1 u6x7t,r.2 ovttrwh 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 specb+w sh4o. ppyuij/s 7g /00thed 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 witq,ffg m*)ge:xvn61 svh 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 o9g *p8jxc(nsw i1 tvf5f $3.0 \times 10^6 \; m/s$ 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 magnitude oq b-a2qo x975nwn .wkaf the magnetic field at a distance of 0.15 m froo 2 xq9kaqwn7nwa -5b.m the wire?

  A high power line carrying 1000 A generates wh8xp *4/hyubsm .frj b+jw (8ka-q ka38alh2jnat magnetic field at the ground, 1h x rumq+4lnj2ajk*8 (8wbb.-k /yj8fasha p30 m away?

  How much current muste .t48 zj) a5ho5mvh3itmtv-j flow for $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance fro pnzdm a+x 8+d479qtb. os9oy0hg(h srm a long straight wire carrying a current of 5.0 A is the magnitude7 (4op+ d9x 08oh9s anhymzgd+ rtbsq. 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 A in op2+l ep5t z8;kf uvths)sr*q v6posite directions. They are separated by 40 cm. What is the magkt5st rfvh 6*8e;vqu+)szl2pnetic 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 wireskf.su 4py;k)j carry currents of 20 A and 5.0 A in opposite directions. The wiresy)p ; sku.f4kj are separated by 0.20 m. What is the magnetic field midway between the two wires?

  Two long parallel wires carry currents of 20 A vf7smazas 5uw.v6kkjw( 0/h: and 5.0 A in opposite directions. The wires are separated by 0.20 m. At what point betweek6vw 7(z mva: 5usjh/sfa0.kwn the two wires are the contributions from the two wires the same?

  Four long parallel wires eacha1e)h)k7wdkpfgqbir(2 tz6 *) jgp g 7 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 cm positioned in the x-y plane. What magnetic fieifp7(r6kt)apk)wdj7qg b e2z gg)* 1hld 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 p 5xx;0/c 3gqvjzskmlh ,9n9 nopposite directil 3p 0vg/mx5c,;k nn9 sq9xzhjon. The wires are separated by 0.30 m. Find the magnetic force per unit length between the two wires.

  What is the magnetic field at the center of a circular loop of mr2o 1c9de(nhwire of radius 4.0 cm when a current of 2(1 mnh9d2 reco.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. What magnetip. c1r, ub5mghc field is produced at the center of.h c1b 5,gpurm the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m jet6/ ,ey gy wb61w ysa-jb2)gcqv r94long and carries a current of 4.0 A. What strength of magnetic field will it haj,wcte24-g/6bjwyr)6vyeqb 9 s1agyve at its center?

  How much current must pass through a kof h b-r53.ico2h eh7400 turn coil 4.0 cm long to generate a 1.0-Th h-2bi c3of5ho7e.rk magnetic field at the center?

  How many turns should a w0 hzybg0gbcr )hg:8* 10-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 rectangular loop of 120 turns gn: 709 uujqu +rx*wn.hdfy(vthat carries 6.0 A if its dimensions are 4dfj.h9 (0*x nwq:+gruu n7uyv.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 mifd, 6-xiaa h5 :b,hwk is in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. i:dh,fb-, 6 a5ihkaxw What is the magnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wi8siv.9upade*z,s x.8 n,eg eqre of cross-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 iv2z8*ijd.v.gk a d j,tn a magnetic field of 3.5 T. The loop has an area ai2k,j.v dt.jz*d 8gvof $0.12 \; m^{2}$ 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 ii uytk 6 82gu194gu-cuif0l ngyran ;5n 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 looal9u gikuf18 r- y65guint;4ncy 2ug0p is parallel to the magnetic field?

  A circular loop of wire of radius 0.50 m is in a uniform mx 2zmw)ju26 qiagnetic field of 0.30 T. The current in the uw2ixm q)z26j 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 arfh bb2 +.wcjs9kt/kj -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 (charge e) has a speed p ec+at ,opm),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 velocitymhf.ti8q13oj*2x*p. i mzyi .xeir6 l $6.9 \times 10^6 \; m/s$ 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 of 1.0 kV and then moves into a ts f,/;y ,ma3kwd0j drmagnetic field of 0.040 T. What is the radm0,j,d; /3dk twas fyrius of the proton's resulting orbit?

  A proton is accelerated from rest through 500 V. It enters a 9 kh-gk7cr;ys,c-bbh magnetic field of 0.30 T oriented perpendicular to its direction of motion. Determine the radius of the path it f ;bs9ryk -,hgbh-7cckollows.

  A beam of electrons is accelerated through a potential differg q ay. 242tskec9 u.6sup(3sr*aib vdence of 10 kV before entering a velocity selector. If the B-field of the . sb a2ut*3du9rqe(ya.p6csg4vi 2s kvelocity selector has a value of 0.010 T, what value of the E-field is required if the particles are to be undeflected?