If the north poles of two bar magnets are brougsa z:pkpgvu,(b9), 3osvn0 jsht close to each other, the magnets will,pkobvsgs3p9: ja0zs)vu(, n

  If the south pole of one bad8sht-f twtxc- ):c,8n .5vw uf udil8r magnet is brought near the north pole of a second bar mwun-l8f :c)xf- st c.w,hu8d i5vttd8 agnet, the two magnets will

  If a bar magnet is divided into two equal pieces,51 txo sg+n*kn

  The Earth's geographic North Polg/ w2 c)az*im)bid:p ne is magnetically a

  The south pole of a magnet points toward tu, jn/w0cysgikcz 708he Earth's

  An electric current prodp dk-j5 nwc*b,m(yk) wuces

  Which of the following is correg(xzz ,2iq2glbn/po- pa mi+x/ l x)9jct?

  A vertical wire carrieo5 mo,,qy wx.q))yh he4/y ozjs a current straight down. To the east of this wire, the ma,yozyqo ) hojxyw.hq4,)/ e5 mgnetic field points

  A horizontal wire carries a current strvyt. uckltroq3 ji ;7:bs ;69eaight toward you. From your point of view, the magnetic field caused by this3; oi6ltquc k j:et9ry7b.;vs current

  A current carrying loop of wiretfvm;ju yx)l(6.1 qgs lies flat on a table top. When viewed from above, the current moves around the ) t .y(xgsmlu6f;jqv1 loop 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 loop of wire lies flat on a table hrzojs qc95;ucn/u86)1 zb)ul oc1 ep () glgxtop. When viewed from abovep( rjs nz1qg u u;) 18h c5l)gcec9ol/u)bx6zo, the current moves around 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 magneticmiw; 6 4h4p(a1 ehkviq field is the

  1 T is equivalent to)n8njo)4zyiym1bvp qg ) f829l izux n-7usn:

  The direction of the force on a curvrm7n+ . jhi.pf5x.gz rent-carrying wire in a magnetic field is described by which of t jirvhpn+ .5mxzg..f7he following?

  The force on a current-ytm3 s1octf/8 carrying wire in a magnetic field is the strongest when

  The force on a current-carrying wire in a magnetyu(+mebfz8*;27 mltnbou oh 0 ic field is equal to zero when

  A vertical wire carries a current straight up in a region where the magnetir vr9: ;+a4nltgyvxcr0x su 2/c field vector points due north. What is the direction of the resula/vs t u:xxvc2;ygrnrlr0+4 9ting force on this current?

  A charged particle moves and experiences no magnetic force. From this we caxkr-k 7ozo w60;,swfan conclo ws70rwf 6z,-ok;k xaude that

  A charged particle moves with a constant speed through a region where a i:m pc89w nenp.dj;en;nya*1 uniform magnetn.nwid;j* e:nmeyp1 c apn98; ic field is present. If the 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 magne 0(q:b3 am ) zmr/td;lrzl lb4f;oaa:stic field. The magnetic force on tha:ztbr ;da :lfzromq 4 a;b3slm l)/(0is particle

  A charged particle is injected into a uniform magnetic fr g6lglb)38om ield such that its velocity vector is perpendigrbgl 6m )8ol3cular to the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed travea(dgr 6:2 o6lxeys c;qling in a circular path in a uniform magnetic field. If the particle had been traveling twice as fast, the radius x:(6daeoycg 2ql rs6;of the circular path would be

  A particle carrying a charge of +e travels in a circular path i*y4n w1 jyyeiet:qscaot 6p9n*;*hm7 n a uniform magnetic field. If instead the parti6;t*j y n y* 4ypcq*aet97onh1mw:eiscle carried a charge of +2e, the radius of the circular path would have been

  At a particular instant, an elect c:(i2l4hd4dyleqv yy9 pt a+7ron moves eastward at speed V in a uniform magnetic field that is directed straight downward. The may:edpq2chyav+4d (lt7yi 9 l4gnetic force that acts on it is

  An electron has an initial v:j ipvy79 o;yaelocity to the south but is observed to curve upward as the result of a magnetic field. The direction of the ma pv y;oya7:9jignetic field is

  An electron moving al8c877d3jp:y7qwl mxaeb)xg yong the +x axis enters a region where there is a uniform magnetic field in the +y dirx y qeg83x)y:cd778 bmlj wp7aection. 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 current-carrying wire gj7xplfww + v8x5 m;t).* oyyris

  At double the distance from a long current-carrying wire, the strength of the m9 nn85z -hi rqu)- 4cqif,uhlxag) ui8 xuln,r-h-qfq 4iczh 9n5netic field produced by that wire decreases to

  Two long parallel wires placed side-by-side on a horizontal table carry s /7ysxr quh/1bne0om c*o *+lidentical size currents in opposite directiec7 xrly*m sso1+0/qho *nub/ons. 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 horizo6upoekc2, .kk2 cm 3xqji2wv 9ntal table carry identical current straight toward you. From your point of view, the magnetic field at the point exactly between 6x2,c. iq9ewjk2k c 3kuvmp2othe two wires

  Two long parallel wires carry equal cu+s p6 i7kclg:gmbb9 m2rrents. The magnitude of the force between the wires is F. The current in each wire is skbc 92m :i+pg7lm6bg now doubled. What is the magnitude of the new force between the two wires?

  A long straight wirenu- p.7t efyl( carries current toward the east. A proton moves toward the east alongside and justun. ep-f7ty l( south of 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 l *ce 0e1zy 6e,y;yw;jvwhng)the page. What is the direction of the magnetic force it produces on an electron that is moving perplecv j;e, ygy*hy6nww) 01z;eendicularly toward the wire, also in the plane of the page, from your right?

  Two long parallel wires are placed side-by-side on a horizontal tablp796cgg:sh y ip gjxc k2(),kse. If the wires casky2,7 chsgkgj( xcp :ip)6 9grry current in the same direction,

  Two long parallel wires are placed side-by-side on a horizontal table. If the w aedg953 tha)dires carry current in oppt 35eda a9h)gdosite directions,

  Consider two current8a qt eqdlat25 0c.00vi1bdk f-carrying circular loops. Both are made from one strand of wire and both carry the same current, but one has twice the radius of the other. Co5a8fet002aqd. iqb tdkcv01 lmpared 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 made from one st4vwt39iu,+d ppi ue 4brand of wire and both carry the same current, but one has twice the radius of the other. Compared to the magnetic moment of the s ubd+ t9eipu4v4pw i,3maller loop, the magnetic moment of the larger loop is

  The maximum torque on a current carunlt nt8 i-j/* r/o1bkrying loop occurs when the angle between the loot8jn-tol//ik u*1 r nbp's magnetic moment and the magnetic field vector is

  When placed askew in a magnetic field, a current carrying loop that is rxkt3kmd- 6xl1gb9fii1( / kofree to rotatediblo tki x1/ kr9-xm16kgf3( in any direction will experience a torque until its magnetic moment vector

  What fundamental fact underlies the operation of essenj93cc e r2e1nqsp*.bjtially all electric motors?9j*pse 1c3b. re qnc2j

  A circular wire loop lies in a horizontal plane on a table and carries curreps/6eey e6yf*m r 4k0c,.h vwg3pvk5ynt iw0y3ekvpc6,s hype 6 emr5g*.f/ ky4vn 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 interaction with the magnetic field?

  In a mass spectrometer a partprgk z- s.c+93h7w lzzicle of mass 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 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 lpzwkcr3.ghz z-7s9+ of B, q, V, and R.

  A velocity selector consists of ahvjs9b8t sr3 ,) obcfzmo.5+l 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 directed to the north. What direction should the electric fob5fr8bct39s . hlo+)vj,s mzield point?

  A 2.0-m wire carrying a current of 0.60 A is oriented parallel to a uniuw5+y4 w*hzzay3: p dbform magnetic fiel+wzza:py*4h wud3 by 5d of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a direction of-tn6br;j8w xqyj 9 w9i $30^{\circ}$ 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 A when by;45q rercvc, m84n:ri7 fxq it is placed in a magnetic field of 0.020 T? The wire makes an ab;c7crrqm fy r,e4:ix qv5 4n8ngle 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 a d5o .+la 2cyh/txhz4fnd is in a magnetic field of 0.10 T. What .f 5z/hxa2tcly4+d oh minimum current in 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. What is the 3uo dgo)0zev*magnitude of the magnetic force on the pe0duzo o3)v*groton?

  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 o,-9 boi jmxlqp -l+7yyf $5.0 \times 10^4 \; m/s$ 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 sped)4rewa /q:*ly+7a htuhr c4n ed 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 be( 0) ae:vy+5flb,bbhdb0+7q tvel e 8*xmyg 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 avtvny:v12o7)ng epk / 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 with (bj)tzb9fk4q-g rdge0fe+ 5qk 2m t(ka 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 oo ig(3u/ix 1fmf $3.0 \times 10^6 \; m/s$ 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 o) j9 tvfl)hi5fcc/t2xlymr;/f the magnetic field at a distm fcr5j;c2/v9 tfth lli)/yx )ance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magnetic field u7qm /x (q02iqdvj*do at the ground, 107 vuiq*om0qxqd 2dj/( m away?

  How much current must flow for 2.su4 uk(ob0 nz,lbinw o 7shb7- qly3$1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long straight wire carrying a currentkdtctd(b :) 7t 1eu j+:vfi1c,nka7qh of 5.0 A is the magnitude of the magnetic field due to the wire equal to the strength of the,)+71(vjt hnd :kfuketi 7qb: cta1dc Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents of 10 A in d u5.gr+w uiv)y.f6h9eci2oh:ptj * dopposite directions. They are separated by 40 cm. What is the magnetic field in the plane of the wi+t2o u dpuh 6cy*.fi.g59 )d:jrheiwvres at a point that is 20 cm from one wire and 60 cm from the other?

  Two long parallel wires carry currents of 20 A2kz4vi*9yhx x9 ppdw2 and 5.0 A in opposite directions. The wires are separatedz *99iyvx 2k4dppxw2h by 0.20 m. What is the magnetic field midway between the two wires?

  Two long parallel wires carry currents of 2y6+ 2ka yof8kywb2 av(0 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. At w6 k2(yoybaky8 2vf+ wahat point between the two wires are the contributions from the two wires the same?

  Four long parallel wires easq b0,n8yz0zxzq-4svch carry 2.0 A in the same direction. They are parallel to the z-axis, and they pass through the corner,0 s nyv0qsxzzz b-4q8s 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 ws) (koq,2bsi h/:+tlx.t kfecurrents 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 twoq()t,+w2t.fxho i bke:/ksl s wires.

  What is the magnetic field at the cenmwb)h * cuoh0z4yoi; )cz bsy5e9j+* mter of a circular loop of wire of radius 4.0 cm when a current of 2.0 A flows in the wire) m5y* 0)hy c4ju msbo;h czzb*o9+iwe?

  A solenoid 20 cm long is wound with 5000 turns of wire. Wh+u wv:.5 veze,hc rfk+at magnetic field is produced at the center of the :cuz,.kefh+w 5 vr ev+solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long ky-z2 ih:7 ienand carries a current of 4.0 A. What strength 2nz ek- y7ii:hof magnetic field will it have at its center?

  How much current must pass through a 400 turn coil 4.0 cm long to generate a 1n*b7 *3lqxoj;po tm(p.0-T m7b*3t( m qpjoonpx ;*lagnetic field at the center?

  How many turns should:b:5 ;*5xm h f ebqfg+kaebjb5 a 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 recg(zu hzau-p.7pp sn)7-0r u lbtangular loop of 120 turns that carries 6.0 A if its dimensionu pasng bu7(z)-lh.0 -zpu7rps are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m itv/ o;size k*lyg4/( is in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torquez4yk ;g/tsv(i/ol*ie when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sectional .xzcec2b 7 udtm5xnv94).czr r 3fo 9carea $0.12 \; m^{2}$ 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 34* i f(y7mm*asadm 9yj.5 T. The loop hy*m9afj 4 ys7d*(immaas 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 rbe3)xv-gf t c1adius 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 tg1)v-fec b xt3he magnetic field?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic field of 0.3fwd t4oko+/p *0 T. The current in the loop is 2.0 A. okfo+ /pd4 tw* What is the magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop o7b1o uxpd4t3. akwh;g-mf w,df area $0.25 \; m^{2}$ 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 particle4sry fv5 e*xmc6 9vh2b (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 wite4mao:8(9x zngufi cvd1c s70 w yq;4mh 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 kr e2k2wt7k*xs skz ;ab16 mt(lV and then moves into a magnetic field of 0.0ek17 bk*mawssltz2kt6x2r ; ( 40 T. What is the radius of the proton's resulting orbit?

  A proton is accelerated from rest tkaen , pdf:5gh(ej8 7tc: v:eze9et( khrough 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its ditze t,85 k e hf97pgkvnej:d:(:(ea ecrection of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potential difference of 10cl,y7 2fy24i. b5snrxhxj( qx kV before entering a velocity selector. If the B-field of the ve2x(hiqbj5ry . xxysc724f n ,llocity selector has a value of 0.010 T, what value of the E-field is required if the particles are to be undeflected?