If the north poles of two bar man38; ey hg)uek/x* mtgo,rzd (gnets are brought close to each other, the magnetsm*dth3rygux e8(ne )/; k, zgo will

  If the south pole of one bah*pnet;y7p gz+j5v c5r magnet is brought near the north pole of a second bar magnet, the two magnetszhpyv e g*5;cj7t5n+p will

  If a bar magnet is diviw* rbz3mu(p4 jded into two equal pieces,

  The Earth's geographic North Pole is magnetil5 fwavw+u )4ically a

  The south pole of a map (fb)ai 7t:t pps+4mognet points toward the Earth's

  An electric current r41/liccup 49n sw+ukzn1pg) produces

  Which of the following is corb,4a. lhelwp m7 /wxl:rect?

  A vertical wire carries a current straight jd j szw: krdz*4(wb 2ny(gje/mg 3)4gdown. To the east of this wire, the magnetic field poy/mw4 *jw2:sgg( bn ked(z3jz rg4)j dints

  A horizontal wire carries a current straight tpw2a pc v1n4f*oward you. From your point of view, the magnetic field caused by thiscvpfwp214 *a n current

  A current carrying loop of wire l9 gfodp2 8 tmavysjvrw-l6l 74f) p6l+ies flat on a table top. When viewed from above, the current moves aroundl6 8ftp+)pjsf9o-l7yl6 g d rva4mw2v the 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 tabx47ex4d shjfo1f y)6 tle top. When viewed from above, the current moves around the loop in a counterclockwisfesx df)6toxy74 4 1jhe 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.; mkah fh6uq8 the

  1 T is equivalent to0yi9in mbza,t(e1j q 4

  The direction of the force on a current-carrying wire in a magnetic fiel+vxz3yg i8s 6sd is describeg+ vy3i8xz6ssd by which of the following?

  The force on a current-carrying wire in a magnetic field is the stronk(m:u .h(ktmyh -te6b d8 eho)gest when

  The force on a current-car( af6;o/ n513kd fiw-ut xfaerrying wire in a magnetic field is equal to zero when

  A vertical wire carries a current straight up in a region where the magnet.,n +itxsx6d5 pvi (:ytq(ugpic field vector points due north. iigxsv (td(pqut 5.:n,6yp+x What is the direction of the resulting force on this current?

  A charged particle moves and experiences no )s4k6x*zf q gyeso.o)magnetic force. From this we can concle xssky)o.gf46 zo q)*ude that

  A charged particle moves with a constant speed (.qi4bm1ar4 tk ouz) ethrough a region where a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic forceakmu. zb4q i4r1t eo() acting on this particle will be maximum when the particle moves

  A charged particle moves across a constant mrkdwm0 :dko6,agnetic field. The magnetic force on this paromdk6kd,r : w0ticle

  A charged particle is injected i ;e64jutsih cb4hw8 e.nto a uniform magnetic field such that its velocity vector is perpendicular to the magnetic field vectorhj8s4ehiube; c. 64 tw. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in a circular path k:ie,8cjp- : +rs u1b1 /f smblkdjxm:in a uniform magnetic field. If the particle had been traveling twice as fast, the radius of the circular path wou jc- i :l,1se8 :pjmd+mxubr/s:1kkbf ld be

  A particle carrying a charge l*iku5;)v ugt- is8kmi xdr lg10d p::of +e travels in a circular path in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of the circular puks ;vtp*0ig xikd m g)5ri::ld-lu81ath would have been

  At a particular instant, an elecrc:ot fgcfy:r afl 7;zx; e):wh/4a8gtron moves eastward at speed V in a uniform magnetic field that is directed straight downward. g7 a t)aclfcrrz:g4/:oxfh;yw :;fe8The magnetic force that acts on it is

  An electron has an initial velocity to the south but is observed to curv+.2 otc,hybn2g:1jdlcj zx zrc5a. n;e upward as the result of a magnetic field. The direction of the magnetic fieldccry zx.l5:j,jn 2bzt +hdong. 1 2a;c is

  An electron moving along the +x axis enters a region where there is l-r kana yqbj3)q:e. +5)l ncma uniform magnetic field in the +y direction. What is the direction of the magnetic force on the electron? (+x aby .q ar+nk3: qcl5nje))l-m to right, +y up, and +z out of the page.)

  The magnetic field produced by a long straight current-carra8.1h(lqtiy0ao f sje)(nz0 i ying wire is

  At double the distance from a long curc)e)llkcg ;h:6kb up (rent-carrying wire, the strength of the magnetic field produced byl bclek)p:k6 g);c(uh that wire decreases to

  Two long parallel wires placed side-by-side on a ho-obllliat ,+wqe/ u q+(s.)1a o1wzykrizontal 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.tw, +uzi +b/q-)al1lk .y1ows (oqela 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.2edk75zybc gk *f:6h,es e+dwv4ts j a horizontal table carry identical current straight toww*k7 s4 eg tdf:,d+ hz6v s5jk.by2eceard you. From your point of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnitude of thef+mu :-9+;m zi)iig cd* ;rgjlggq-vc force between the wires is F. The current in each wire is now doubled. What is the magnitiq9 cm ; i +ggv;m+jgludc-gz -fr):i*ude of the new force between the two wires?

  A long straight wire carries current toward the east. A proton moves toward th 7g8v)tz-ps2c+f w k0bfm8vc ie east alongside and just south of the wire. What is the direction of s -gvwkf78vfm z)+ tp8bcc20 ithe force on the proton?

  A wire lying in the plane ost,b/ ncidtkuv ly q i)5h0wpv9k7wy8 7:cj 8*f the page carries a current toward the bottom of the page. What is the direction of the magnetic force it produces on an electron that untwbiq5c8 7ltk*: cvijsd90)h k,vwy 7p /8yis moving perpendicularly toward the wire, also in the plane of the page, from your right?

  Two long parallel wires are placed sidw 4wyshjl8c y.1w w0e3e-by-side on a horizontal table. If the wires carw.wshej01 3l y48 wycwry current in the same direction,

  Two long parallel wires are placed side-bkgn9b 1ygw39o y-side on a horizontal table. If the wgo 3nw9by9kg 1ires carry current in opposite directions,

  Consider two current-carrying circular loops. B- kwnim uf(zm4l;:nc*oth are made from one strand of wire and both carry the-zmc: * u kmlwf(n;n4i 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-carryinkuo l;3pte7cz :/lhi(g circular loops. Both are made from one strand of wire and both carry the same curikt e/3 uzcp;o l(lh7:rent, 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 ojusxx hd1s 9:6z6zj 8iccurs when the angle between the loop's magnetic moment and the mag:d s1jjzx6sz8u 69xhinetic field vector is

  When placed askew in a magnetic field, a current carryij-h;xc2svvhs o) 2u1u ng loop that is free to rotate in any direction will experience a torque until its magnetic moment o;sv2-jvhuh x)s c21u vector

  What fundamental fact underli.xg ymfmlff2i 9:g9a7 es the operation of essentially all electric motors?m f .yf99li72gxa:mfg

  A circular wire loop lies in a horizong xyxkc.rouu;5yrf 4+ f, *j*gtal 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 t5rj .yk4xuf ry gfuo*gx,*; +co lift off of the table because of the torque caused by the currents interaction with the magnetic field?

  In a mass spectrometer 23mzx-lsq0e 65 h:eezdk bhm z.3lt2ga particle of mass m and charge q is accelerated through a potential difference V and allowed to 2es 6zm-bq2e ml0 e3hxl:zh5gkd. zt3enter 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 of B, q, V, and R.

  A velocity selector consists of a charged particle pa qh(s-lzgx ix m):0a,hssing through crossed electric and magnetic fields. The forces exerted by these fields ,azhx0mxlisgh:)q- ( 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 field point?

  A 2.0-m wire carrying a current of 0.60 A is oriented parallel to ;yf12tnj jjz3v (gxz lj +ri),a uniform magnetic field+l z zj2jyn3jt(gfjxvi,1r ;) of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a curr9vod nfa qghg1)x 81j3ent 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 car je;7 waz9/d3ltf-uorh ,2ht urying 5.0 A when it is placed in a magnetic field of t,udrw ;tf2-o9 7l3hzuhaje/ 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 a mass of 0.050 kg and is in a mag(/exagu /.qrrx8.yj/pae7y m netic field of 0.10 T. What minimum current in the rod is needed in order for the magnetic force to cancel the weight of g/x7/aqry .8aem.j ue/yxrp(the rod?

  A stationary proton is in a uniform magnetic field of0 qi:)u1pw hty6eow l6 0.20 T. What is the magnitude of the 6pw e1:hy iut0lo)qw6 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 speed vtzr4 cc)o,h4 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 ar --q+i e0pem nrv,db9 )ubvk;sksi38 speed 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 xko)l /-zmph., ,9h/x tbkiv)mh +p efdue 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 withmn, k73hb 6 qfl,litd- wyuj;e6.3mdq 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 magnetic force of the electron.

  An electron moves with a spewpy;dt93isy 2ed 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,av6vrug7 ep5 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 carries a current of 25 A.qm ( fq akdx5y;ck6*vvh:) 0lf What is the magnitude of the magnetic field at a dis: v 6vc)f;0y(h5a*qmxqlkfdk tance of 0.15 m from the wire?

  A high power line carrying 104mr 7ktx1ea+:t3 4rz4ql2cr 5 b mguis00 A generates what magnetic field at the ground, 10 m away tgim 3rb+4 572a:t cqzkx1umrrl s4e4?

  How much current must flow forc89gsnjdd :ad*+l. ur $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long straight wiz uqc-4w536 k zg)ziu*): guc o(phxdtre carrying a current of 5.0 A is the magnitude of the magnet6g( 4*ogcz35dtwxqk)chui zu)-u:z p ic 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 opposite directions.v +u4:yf6sucs 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 u:4+cy6f us svcm from the other?

  Two long parallel wires carry currents of 20 A and 5.0 l:h8*63w l2qhnqz 5yoj,)f2nrwfs ywA in opposite directions. The wires are separated by 0.20 m. What is the magnetic field fny2slq n8rjwo56qfl 3hw )2* wz:y,h midway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite directnc6t 8f 6.ex zde4q4m e-s:fh0 u,scirions. The wires are separated by 0.20 m. At what point between the two wt4e84 sn:6ccd. 6efhsq e0m-,rzx ifuires are the contributions from the two wires the same?

  Four long parallel wires each carr+4khi ,2 udxssy 2.0 A in the same direction. They are parallel to the z-axis, and they pass thro+hd ,k2s4uixsugh 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-iais;fzow9+ sl xp z54j *c,o 5.0 A and 8.0 A in the opposite direction. The wires are separated by 0.30 m. Find the magneticlcs,i9wa*4j+s oz ;oi5x -pfz force per unit length between the two wires.

  What is the magnetic field at the center of a circular loop of wire of racox ykpviflb(:6hon 5.0u h, 4dius 4.0 cm when a current of 2 puy,l.ohkvio5:n60b( xf4hc .0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 tur, v :gvv*rotw/ns of wire. What magnetic field is produced at the center of the solenoid when a current of 10 A flowv,trvo :v/ g*ws?

  A solenoid with 500 turns is 0.10 m long and carries a currentu2/tmhrd ;f 3m of 4.0 A. What strength omrd/;u tf 3mh2f magnetic field will it have at its center?

  How much current must pass through a 400 turn coil +o*mgetp y ,p-p(jy6x 4.0 cm long to generate a 1.0-T magnetic field at the cppo m6+jxy,y(ge* p- tenter?

  How many turns should a 10-cm long 0 hup4rj)ipk wd0l+(asolenoid 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 recva-q4 eq*hv e1eb;6 zdtangular loop of 120 turns that carries 6.0 A if its dimensions are 4.0 cm x 864h - d*qbe1ez ave;vq.0 cm?

  A circular loop of wire of radius 0.50 m is in a unifo6y1un,g e txcytu; t+-rm 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 l+xe tt n;1uygc yut-,6oop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sectional area f+as5 gv:ikb qd ex+a*vd21zeh h :5f3$0.12 \; m^{2}$ 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 oak,6 u ilp:5i3.5 T. The loo5aiup6ik :l, op 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 inv+ w oc0-yczb) a uniform magnetic field of 0.30 T. The current i )b- cwv0yo+czn 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 uniform mxg5yl+x5yo p/2+bfoih-8 vhxagnetic field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torxogyh+hy pvo5l +b/5-2xx 8fique when the plane of the loop is parallel to the magnetic field?

  A circular wire loop of arew1r,8czz9 i szf(c ue5a $0.25 \; m^{2}$ 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) j,m9q -ggpi dy o mu9. +)ade5l:)plsu9tza3dhas 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 witvp;m htf0 o/smbv:,- th 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 potenty 4s4y;txd5lmt .8j5ok u5oxw0o lds1v )t ik+ial of 1.0 kV and then moves into a magnetic field of 0.040 T. What is the radius of the proton's resulting or1yt+o; 8uxv 4dktds.ixoyjts 5o)l54mw50 kl bit?

  A proton is accelerated from rest througp tx uvq3a2cz4g-m/0 jh 500 V. It enters a magnetic field of 0.30 T oriented4atg-umqxv3 2c0j /pz perpendicular to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potential dif24pf j*i y k2of.tgexc56akf 5ference of 10 kV before entering a velocity selector. If fe4 caypxg6k52f.ti2k*5j fothe 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 be undeflected?