If the north poles of two bar magnets are brought close u*(h:ow- af 9mw/dg53 hfrkpw to each other, the magnets wil /f rwmpd3 k:(g*5hwh-a9 fouwl

  If the south pole of one bar magnet is brought near the nlrbh - 5ydpuc:bos-; .orth pole of a second bhbrs.-5d o; c-:bupy lar magnet, the two magnets will

  If a bar magnet is divided into two eq 2k1amy4qqetzm4iwzro5w)2fyw2(b- ual pieces,

  The Earth's geographic North Pole is magnet*j e52sg2b:wtirwf4 sically a

  The south pole of a magnet pointsfs1gcf4+asc* 2 rnp7sw rjc.4 toward the Earth's

  An electric current bt(s-)c.s b;t95 ssa(bdukcpproduces

  Which of the following is corr .2qvwes)zmu1, jb em(ect?

  A vertical wire carries a current straiz dp6; ,kdmed .kzhtl-f:w+0 bk aa30nght down. To the east of this wire, the magnetic field point-dhtk0alk 30;zzan d fw bm+,p:ed 6.ks

  A horizontal wire carries a current straight toward yo:dyt (j 7/fphxu. From your point of view, the magnetic fielj/fy: d tx(h7pd caused by this current

  A current carrying loop of wire lies flat on a table top. When viewed a,( c zzd. m+c-j/zsyqfrom above, the current moves around the loa/c. + d qzm(sc-zyj,zop in a counterclockwise sense. What is the direction of the magnetic field caused by this current, outside the loop? The magnetic field

  A current carrying circular lr.w.uj .7f 0n7,sbpcam opat 5oop of wire lies flat on a table top. When viewed from above, the current moves arob0a5. pufa mr.ntc.wp,7 j7 sound the loop in a counterclockwise sense. What is the direction of the magnetic field caused by this current, inside the loop? The magnetic field

  The SI unit of magnetic field is thf/r/-ezz q8 lx6fvk3we

  1 T is equivalent tot bep )vzfg cwrfvfyik1e8.-7, ,,v8w

  The direction of the force on a 3k cj42 dl4 8uyv5p-mk etr(cncurrent-carrying wire in a magnetic field is described by whdtj mp 2-rk 4ncec3yk84(ul 5vich of the following?

  The force on a current-carrying wibdv)u1qd8gbd d2e*.t re in a magnetic field is the strongest when

  The force on a current-carrying wire in a magnetic fiujnkn4.z;w 7 rv. xle7eld is equal to zero when

  A vertical wire carries a cuz3lnhv) 4wi,:s . corvrrent straight up in a region where the magnetic field vector points due north. What is the direction of the resulting fovsrwoz43,:vi h.lcn )rce on this current?

  A charged particle moves and experiences no ma4( x04 c,k-x wrp/ yazbscus5qgnetic force. From this we can cobzx-4 s5rauk4pq/,( xy0scc wnclude that

  A charged particle moves with a constant speed through a region ,d9 :oic c5xozy;c7ye where a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting on this particle will be maxi ;cyo c9c7 ix,zd:ye5omum when the particle moves

  A charged particle moves across a constant magnetic field. The mra* l5pl9297 trbx un,egr 2kxagnetic force ona7r2p ul tgrx9e 5b ,n*kx2rl9 this particle

  A charged particle is injected into a uniform magnetic field suc cj -e4tirj 83rv c1xv1v6iq;hi-/adqh that its velocity vector is perpendicular to the magnetic field vector. Ignoring the particle's weight, c/v ecitx38;--h 1qia rdrj1jv46 vqithe particle will

  A charged particle is observed traveling in a circular path in a unifrz 4oyd)uv/ sg 8co)+qorm magnetic field.d8yz roo v)+sgqu /c)4 If the particle had been traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e travels d5,usrb ;l b/tin a circular path in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius osu,dl5 /b br;tf the circular path would have been

  At a particular instant, an electron moves +esjb,svoj,g q a;;z9 eastward at speed V in a uniform magnetic field that is directed straight downward. The ma9 sev joq;sg +,jb;az,gnetic force that acts on it is

  An electron has an initial velocity to the south but is observed to curve x *2ltslq0hhbsf-b0mf/h2*/lrecl* upward as the result of a magnetic field. The direction of the magnetic fqrmf/*fxc h e 2b2slb 0/hl*t-0llhs *ield is

  An electron moving along the +x axis enters a region where th9fl+dk6 v4xlw4o1 w eo kq.q/lere is a uniform magnetic fvol+4f/x d9ql.kwl6ow 1e kq4ield in the +y direction. 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 curqc+dx-z l1hp,rent-carrying wire is

  At double the distance from a long current-carrying wire, t gkqy.: b8-zv 1w9fngthe strength of the magnetic field produced by thb kq1 :yz-8vgfn.gt9wat wire decreases to

  Two long parallel wires placed side-by-side on a horizontal table69k4qnoviv- h 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 vieqkhv -9o niv46w, the magnetic field at the point exactly midway between the two wires

  Two long parallel wires placed side-by-side on a horizontal table jkthn8p8v 9;8*masq we z(v*jcarry identical current straight toward you. From your point of view, the magnetic field atzks9j8q *8;* jtmpewv (vhna 8 the point exactly between the two wires

  Two long parallel wires carry equal curre7wz ylf +0m.jmnts. The magnitude of the force between the wires is F. The current in each wire is now doubled. What is the magnitude of the newm7zw.0 +mfy jl force between the two wires?

  A long straight wire carries current toward the emyc )up7(by8 3sm b)p f-pep1rast. A proton moves toward the east alongside and just south of the wire. What is msbm pf)78pp y)e(r13y-pb ucthe direction of the force on the proton?

  A wire lying in the plane of the page carries a currntpoc p52w(- moa8q2 mha *9fcent toward the bottom of the-qono pc22(hawc 89f5*mpm at 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 right?

  Two long parallel wires are placed siuvj -ghi (os dfv174+ode-by-side on a horizontal table. If the wires carry current in the same direjio(hvs ogf14d 7u-v+ ction,

  Two long parallel wires are placed side-by-side on a horizontal table. If thevhoi9swea 32-2*1y lhg oal (a wires carry current in o(gell*3w-a92v ayo21 o haihs pposite directions,

  Consider two current-axm-*m xl* e1l2-b ysyhyr 3*hcarrying circular loops. Both are made from one strand of wirs2*y*yhlay xm*xm1e-r-lb3 he 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 at the center of the larger loop is

  Consider two current-carry) (ze2oszd,kg 0azb(3abgk p *ing circular loops. Both are made from one strand of wire and both carry a,gdbg0kz)p2zs *o(zk eba ( 3the same 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 angle83dlbb uh mo-pw- k50jd9 h 5cro4/kue between the loop's magnetic moment and the magnet3broh- ue l50p/ jk4whm8cuo9d 5 bdk-ic field vector is

  When placed askew in a magnetic fih+j33rx zq) qx qq/lq,eld, a current carrying loop that is free to rotate in any direction will experience a torque until its magnetic moment vectorr qzlj q)3xqq x,/qh+3

  What fundamental fact underlies the operation of essyg:p/: i7sqqtentially all electric motors :qit:qsy/g 7p?

  A circular wire loop lies in a horizontal plane on a5jr4 slae j8kn6-f )qf 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 thesfral jk5e 6)-nqf48 j 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 accelerated rn9axtw;5 x90oc2c iythrough a potential difference V and allowed to enter a magnetic field B, where it is deflected iw5cc2on 99 arx0y;t xin 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 cons-x0zwl / bkr eh9o/qz-o9 am6nists of 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 magnitudes of the fields. In a velocity selector, the particles move toward the east, and the magnetic field is direq0bl -xaewk-o6oznh9mr 9 z//cted to the north. What direction should the electric field point?

  A 2.0-m wire carrying a current of 0.60 A is oriented parallel to a unifonn yi8j8v*z5 brm magnetic fiynj*in z 588bveld of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in axp. b;gd0*j mw 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 str w1 , sf 26unpa0tagb*o4 yfmvlmi-w42aight wire carrying 5.0 A when it is placed in a magnetic field of 0.020 T? The wire makes an12 fn b *w -a4mo,u syvl6pfgawi2t4m0 angle of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 msa/-t cr(,vf j long has a mass of 0.050 kg and is in a magnetic field of 0.10 T. What minimum current in the rod is needed ,jr/ s t-f(vacin order for the magnetic force to cancel the weight of the rod?

  A stationary proton is in adl 9;)5l(e onb u2jyzi uniform magnetic field of 0.20 T. What is the magnitude of 9d lunl( yjb2iezo)5 ;the magnetic 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 speeirv .pnu bcs*0+a .q0ld 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 o5 ;k zrt3sih4x sr*3pof $5.0 \times 10^7 \; m/s$ 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 with speed 42 kv5 kwifdh8$4.0 \times 10^5 \; m/s$ 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 jzv+v*jqn sk07cs.y / $8.0 \times 10^6 \; m/s$ 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 speed of cu ,1e xk,7a )2ck lsw9:rkmme$8.0 \times 10^6 \; m/s$ 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 of fl:cp0agrz6dek msy6 k *8)e .$3.0 \times 10^6 \; m/s$ 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 owhrt .qe( ex)m/ywp3;f 25 A. What is the magnitude of the magnetic field at a rpy.hq3we wt/;)e(xm distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates whbe f7qh5 dk*(8egngxysk 4r 6,at magnetic field at the ground, 10s*k8dgq4e r n,f6yb75(kgh ex m away?

  How much current must flow fof .)dfs 0tyu9,) zntdur $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long straight wirevd9c n l :mhbnjp iv4*n50zx.. carrying a current of 5.0 A is the magnitude of the magnetic field due to the wire equal to the strength of the Eart0nvdbp z*m4 c.:hlvn.x9nj5ih's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currentsy ,;zrtb4(rzn 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 wire and 6bzz(;n4, rtry 0 cm from the other?

  Two long parallel wires carry currents of 20 A ajjuj* cra)3,5 a u-dilnd 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the magnetic field midway between the two wiraau rl*3)jjj 5dcu,i-es?

  Two long parallel wires carry currents of 20 A and 5.zttvpj,d jb18(9 fyp.,t oe5p0 A in opposite directions. The wires are separated by 0.20 m. At what point between the two pf j tve (pjdz9,,p8byt1.o5twires are the contributions from the two wires the same?

  Four long parallel wireswz5(0tqvw la4dc r 6 md,ywh;w-:m.y r each carry 2.0 A in the same direction. They are parallel to the z-axis, 6trmzl(0 5hvradw 4.wmyq wc;,-dy:wand 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 8-4m 0 c aqfzhlb3l88ne.0 A in the opposite direction. 4qe bch8la-zfm3l 80nThe 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 centerksn7b )g)xcd8 ;cbr +n of a circular loop of wire of radius 4.0 cm gxrbn sb+d)n7;c 8 )ckwhen a current of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. m6 elv4 mxh98z What magnetic field is produced at the ce vel84zh9xm m6nter of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carries a current of 4.0 A. What ugga m -ko(:7ph4ygg5strength of magnetic field will it have at iogug:hg7m 4 k -pg5ya(ts center?

  How much current must pass through a 400 turn coil 4.0 cm long 2wjlnr)pv zzyq .s090to generate a 1.0-T magnetic field at the )2wn zzqy .j00 svrpl9center?

  How many turns should a 10-cm long solenoid have if itv v;c15 v(-q.1oytd7(im9 iie-u nduhlx0la q 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 1200 of l s,jngjm2m ,urt5an1 2t1xx+q8l turns that carries 6.0 A if its dimea1m 1 oj ,8x5ml2tg 0qfn, sj2nx+utrlnsions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic field o k9xch2nxn gb3hhtv30531pgwel x g df7m- ).of 0.30 T. The current in the loop is 2.0 A. What is the magnehgxdwv 7n)khp.lb3 1235-xhgetf30 co9xg m ntic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wizpl60 qyj:-m*pcjd4n h7x2)js v,jz zre 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 n1 qn+h4(6vtu.njbz-eh 6vz hA is in a magnetic field of 3.5 T. The u66n14qjv+ht(nb-z h z. nehv 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 magn5 .,c9c ppznhg*iq5aaetic field of 0.30 T. The current in the loop ippc9a*n5 5,hc. qz gias 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 uniform magnx eqt8 ;)b+n-96sr1trinjnw r l9orm)etic field of 0.30 T. The current inrtn+n8r )st-jqwl )bixe ; 19 9nm6orr 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 wire loop of area1yhcls7ul k 6o ,9+ ;tplv6vup $0.25 \; m^{2}$ 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-char9 xce9 z.49de*zpd bqcalb 4bwrno/ f-1 m3*uvged 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 ve k,+uqblx8n +iv2u p-xlocity $6.9 \times 10^6 \; m/s$ 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 throug-2r;* mgwyergh a potential of 1.0 kV and then moves into a magnetic field of 0. gg;wrer-*m y2040 T. What is the radius of the proton's resulting orbit?

  A proton is accelerated from rest tv0c +vjci ky- u8 +/m4hc)a e2g7vircehrough 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Determine the radiuskevce 4ryc7c8vigjh c)0-mu a+ 2v +/i of the path it follows.

  A beam of electrons is accelerated through a potential difference of 10 kV before7 polw2c96q+b im nxr2.,qote 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 is required if the particles are to ebcmn9+ 7ir 6ltx2 o2qpo.qw,be undeflected?