If the north poles of tw1gm/o(mw8edu: r 7a yqo bar magnets are brought close to each other, the magnets (1uagqmy 78rdw/o:em will

  If the south pole of one bar magnet is brought near 2 zw pin).2 gkjippj98the north pole of a second bar magnet, the two magne82jpii)pk .g9 w npjz2ts will

  If a bar magnet is divided into 5rpq,3 0 vdf*sl+hlw plg r52gtwo equal pieces,

  The Earth's geographic North Pole is magneticjmy (;jlu4:qe ally a

  The south pole of a magnet points toward th0k + n rvebpys2(s)oa5e Earth's

  An electric current p c wy-uem)f:vb0g-+f iroduces

  Which of the following is correvbisf4zq5 (jy*n 9jg2 ct?

  A vertical wire carries a current straightxcuhofse - j3nk-x+ k1t02vbo(c c2,e down. To the east of this wire, the magnetic field cb3-nv0k c- (sfxu12 +c2,o otekxhje points

  A horizontal wire carries a current sp ao 1utf7w-09bs;dg/c; fhuxtraight toward you. From your point of view, the magnetic fieldp hfa0 ufodgsxbt-7/;c; 9uw1 caused by this current

  A current carrying loop of wire lies flat on a table top. When viewed fruj.8pv ku0tx(om 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? T(0vupjx. ukt 8he magnetic field

  A current carrying circular loop of / 7 i-f+ dj-aw/jg9ecd ymvys9wire lies flat on a table top. When viewed from above, the current moves around the loop in a countjjwi-dc 9/d a/f9v7m-syey+g erclockwise sense. What is the direction of the magnetic field caused by this current, inside the loop? The magnetic field

  The SI unit of magnetic */z l3 +dzdlpofield is the

  1 T is equivalent toque ,rn:p.h ed p (5)k01m2eee;ojkah

  The direction of the force on a cuhq-38hard yovro4a* -az0sq /rrent-carrying wire in a magnetic field is described by which ofo8r a-razvy 3/q-so04 *ahh qd the following?

  The force on a current-carrying wire in a magnetic field ymjqc/32)edb p: isoi6sf )x1 is the strongest when

  The force on a current-carrying wire in a magnetic field is equal to zedqa vkt4i5 1-,5q7h ma(zxcb n)yia4i.vuc*qro when

  A vertical wire carries a cu br.6g0yzg3nn+tu p*vrrent straight up in a region where the magnetic field vector poinnr+t0n gzupygv.*6b3 ts due north. What is the direction of the resulting force on this current?

  A charged particle moves ah+z e a()zgqxanc/ 3x:nd experiences no magnetic force. From this we can conxe:na aq 3 c)(zx/gz+hclude that

  A charged particle moves with a constant speed through apw ,-wh.nn xdj*u 2 caww850ev region where a uniform magnetic field is present. If the magnetic field points straight upward,wwwn0vndux5pa -wje h. 2,8c * the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constant mag a2hac6yz3h0 1z++r y c) dmupxh*rgi:netic field. The magnetic force o12cxpcr6i0h+ 3ayzhd rm)hu +yz*ga: n this particle

  A charged particle is injected into a uniform magnetic fielvb:2hm 8r z7gk+ 21 ygoozm9xqd such that its velocity vector is perpendicular th:mzqmyg v282o o7grxbk+19z o the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in a cir 849cp k40juo3alebae0az*vwcular path in a uniform magnetioaw 9aa4ek0p je4 *0bvculz3 8c field. If the particle had been traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of 3 hru+g2uz.k w+e travels in a circular path in a uniform magnetic field. If instead the particle carried a charge ofuz.3kgu+2 hr w +2e, the radius of the circular path would have been

  At a particular instant, an electron moves eastward at speed V in a uniform 1ld6 tgxbxd ko+x8l9-magneticklgdxx-bxld+o 18 96t 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 thm ne a6d7t)lp3y4*xz,w fo2uo curve upward as the result of a magnetic field. The direction of the magnetw m*o xuhlt,)2pn3zf6y 74 eadic field is

  An electron moving along thbm6sc*ltyt: sfr-76le +x axis enters a region where there is a uniform magnetic field in the +y direction. What is the d:lm ly6t rfs-67cts *birection of the magnetic force on the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced by a lobtiiq3 sw;mertpw*sf b )v)rb 7.36a 2ng straight current-carrying wire is

  At double the distance from a long current-carrying wire, the stltgm(3x yohn23tu3r3rength of the magnetic field p3l2m3r gnyt tuo3(3xhroduced by that wire decreases to

  Two long parallel wires placed side j4w ncv:tpgjsd d18 59mr6b5ybki0x9-by-side on a horizontal 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 the point exactly m is r:0kd99 jx4tg1yw 6v5 cm85bpbjdnidway between the two wires

  Two long parallel wires placed side-by-side on a horizontal table carry identindo kd6gaklw3w 9 8pg4x/,pic/)m su0cal current straight toward you. From you36)dcxdon0s mgw9u w,kgp4/ alkp 8i/r point of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal currents. m6lfp: ws t r8,t ;2l0fo:ispuw:ioe 3The magnitude of the force between the wires is F. The currt,i uf: tpoplwo8m;ir3s lfw2s6 :e: 0ent 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 egx(plc/t,d8xk9 or ; nast. A proton moves toward the east alongside and just south of the wire. What is the direction of the force on the proton,;ktgl 89/oxrpd( xc n?

  A wire lying in the plane of the page carries a curreneq9gb10tkw4d t toward the bottom of the pkb0tq gw4de91age. 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 side-)k4r3lkvl ;sv4 ug sd4by-side on a horizontal table. If the wires carry current in the samvl3ssk4ld)r4u k ;gv4 e direction,

  Two long parallel wires are placed 6hp eb*gwzsvq/:5 n+gl,xhg 7side-by-side on a horizontal table. If the wires carry current in opposite direehlpw7q6gb hgsz: */ +x ,vn5gctions,

  Consider two current-carrying circular loops. Both are mada5.-cnd+p dk-vg- 0hxe,qsku e from one strand of wire-ck. xqgpdskdn 05v uea-,+-h 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-carrying circular loops. Both are nul*4fest zs* 5-v7 wmmade from one strand of wire and both carry the same current, but one has twice the radius of the other. Compared to the magnetic me4*wl*t snfu ms57 -zvoment of the smaller loop, the magnetic moment of the larger loop is

  The maximum torque on a current carrying loop occurs when the angle betweeullnx4v *.9,mdobzhv :mk7m( 6b:esan the loop's magnetic mob4xhakn:dov(6* b: 7mu.zmll,m9se vment and the magnetic field vector is

  When placed askew in a magnetic field, pcz- wy :9d5ycqp0 :7o se,ohfa current carrying loop that is free to rotate in any direction will ex s hfycp -:pd:79,ecwoo yz05qperience a torque until its magnetic moment vector

  What fundamental fact underlies the operation of essentially all electric m a1d :kydti,8f1ogiozfx oy;:i e19et3, 4 qgiotorse8df ;z y ,ik gg3fi:q1tt4oo9:1ioe, xyai1d?

  A circular wire loop lies in a howhixyh). 8dl 97i)cuyp+s1os guo /0qrizontal 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 ofo9.igusshocy7x u+/l18 0y hw)pi) dq the table because of the torque caused by the currents interaction with the magnetic field?

  In a mass spectrometer a9q37 yh iulu dmzylo.,1mdy f5* )woxa6tji.- particle of mass m and charge q is accelerated through a potential difference V and allowed to enter a magnetic field B, wh 3fiu,wxq)y. dizmjll-haydo76*15umo . t9yere it is deflected in 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 consists of a charged parth5w w*hjfyn.+c us,/ s m4i*)-fgczlwicle 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 -+swcgmwj/w4f clhynz s.f*,u* )5ihudes 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 ocbd.) 5 d),w yeiz 2y3y,c)ujiq4cmvy riented parallel to a uniform magnetic field o).)bye i ud4q)z, c53mcyyvd,icy jw2f
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a curcktk369722 hdukwh;ql8mn xurent 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 carryingty su r4jisr718)zy8k 5.0 A when it is placed in a magnetic field of 0.020 T? The wire ts ky18r4szyjru8 7 )imakes 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 7h aqi6*gskd, field of 0.10 T. What minimum current i,hki dga s*76qn the rod is 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. Wgx jxe28tytg39-g4v foup0a -hat is the magnitude of the magnetic force on tag 2x4gfu- t9e p-x3o8tg0vjyhe 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 o5g j8 j+6teh1 )c6mfcoq+.zgzhm gw6df $5.0 \times 10^4 \; m/s$ 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 swdd-it/;3lgu rwz9a2k 9t-hw peed 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 6 6 vz,i /qeguz r,(gv4 ;cusw,ia(/h;xcsviidue north 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 speez8o1 .l(m otxbybx z6qzu ;7(xzp22 5eyub v*kd 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 with a spee( gz(hq k:m6esd 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 aovfz s4;nethp-2d0 f*,tmvw0 . gio-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 carrif1o 6t5qhckjws0,t zh/0km, yes a current of 25 A. What is the magnitude of the magnetic field at a distance of 0.15 m from the wirkqht c1f0h 0,tw6m,oz /jk ys5e?

  A high power line carrying 1000 A generates woqtu1mw7co18el 8+rhnzw x ,4hat magnetic field at the ground, 10 m away?t1 887n+ ulmxe o1r4, qhocwwz

  How much current must flo 0*b;.uwevxlvzv5p u; 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 carrying a current of 5.0 A isq9zbjt2(-f)dlrg 8 kwtfxo.q1 / g3as the magnitude of the magnetic field due to the wire equal to the strength of thj/t qbr 8o1-q.a9xf glkz3w tfg)(s2de Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry cu:b0 ,ywr- dnvbrrents 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 60 cm from the ot,:vny0 wdrbb -her?

  Two long parallel wires carry currents of 20 06.mi1a af;8rw+p r ym j/ttwgA and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the magnetic field midway between thwtrm/ m +ayrap;86wt 1. 0fijge two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in op1:d-dqp.,ec8v7 zmfr ; uuifuposite directions. The wires are separated by 0.20 m. At what point between the tfd.uc edr,pu8z;1v 7iq um-f:wo wires are the contributions from the two wires the same?

  Four long parallel wires each mg0hm2ohh b26carry 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 planh bg2h 0m6om2he. What magnetic field does one of the wires experience due to the other wires?

  Two long parallel wir is )s()aj)5 isdovg/0 mzdau0es carry currents of 5.0 A and 8.0 A in the opposite direction. The wires are separated by 0.30 m. Find the magnetic force per unit length between the two wiresoi) d0uid0 5as)smgaz (/sjv).

  What is the magnetic field at the center of a circular loop of wirv f/1. w oe.9ul39x4wc6ovz qob1pz cze of radius 4.0 cm when a current of 2.0 Aqbce/owzwvp vucx o4z.l39 o 116f9 .z flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. What magnetic field ib me15 (-e-lolt9blvus pr(u9elo bmtlv5b- - l1eoduced at the center 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 sn-mowtjr2w( -c udt1g 7)3v4f akr wy/tr-- f(w tr u)3w j1yc/ok7grtdna2w 4mvength of magnetic field will it have at its center?

  How much current must pass through a 400 turn coil*+xgzd g 1)/i wf nzrpzu2nm;) 4.0 cm long to generate a 1.0-T ma+nm p2 )z;gn)fdux/z wrgi*z 1gnetic field at the center?

  How many turns should a 10-cm lon2 dsm x a5cz3mf.5kt)og 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 moment9 g wv5*iyv9)nhctb9 o of a rectangular loop of 120 turns that carries 6.0 A if its dimen5bh 9icvgwvyt* )9no 9sions are 4.0 cm x 8.0 cm?

  A circular loop of wire of ra2vl22i h6pfwx dius 0.50 m is in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. What is wxlp622iv hf 2the magnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cros(k vnx2ridu7.nz n ri-(0px.,ajy6a us-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 magngkk1e 9),uj87eu newgp oi +(metic field of 3.5 T. The loogjkeei,k pg(w n97 o+)uuem81 p 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 unu7dv xjf*50 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 magn75x*vu0nf ujdetic field?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic field of 4r6 zrkqs iv;j+o1u k.0.30 T. The cus4kvo+r 6j;u.kz1q r irrent in 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 a+;o;wtl.f z jdrea $0.25 \; m^{2}$ 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 parell-uqwy; mx53 p,wx -csk,o3xs9nl) ticle (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 withlrs w c4oi.x)ld6,n -h 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 through a potential of 1.0 kV and then mo*x g6uul6 :dyh4xh k7xves into a magnetic field of 0.040 T. What is the radius of the proton's resultinlh 7gu 6xxd:kx u46yh*g orbit?

  A proton is accelerated from rest through 500 V. It enters a magnetic field ofv m89ie*nirx. 0.30 T oriented perpendicular to its dxne*rmvi8 9 .iirection of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potential difference of 103 .nk2vv-n .bsbseal 9 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 is required if the particles ak - s3s.e 2ba.ln9vbnvre to be undeflected?