If the north poles of two bar magnets are brough7:jdzf0tgf1v 3c 3f;ybezx.qt close to each other, the magnets f3f ycxtf1jqg ;d07.zev:z3 b will

  If the south pole of one bar magnr,.oe rya)db a1uc0,u)ou1 jx et is brought near the north pole of a second bar magnet, the two magne,joyr)oc0 x, u ua)1e1abd.urts will

  If a bar magnet is divided into two equal,q tktg4(41n ux2zkz: xnns ;t pieces,

  The Earth's geographi7mosqgaj l wo2w . f1iu0:4g5fc North Pole is magnetically a

  The south pole of a magnet uc269rs1ix)9k wph t qpoints toward the Earth's

  An electric current 9;1 ej/ vauy rfoyi pt*/rq)s7produces

  Which of the following is corr35t zh mr5urmgp+h4(iect?

  A vertical wire carries a current straivm cro51knczly;z (/+ ght down. To the east of this wire, the 5kz (y1;ol+m c cn/vrzmagnetic field points

  A horizontal wire carries a current straight toward you. From m/3 q,ehtdcv4your point of view, ecdt v/,m 43hqthe magnetic field caused by this current

  A current carrying loop of wire lies flat on a table top. When viewed fro7cik5 gfd aph3lx72 -5v2xnulm above, the current moves around the loop in a counterclockwise sense. d2f la325p l 7xi-n7cvg5k uxhWhat is the direction of the magnetic field caused by this current, outside the loop? The magnetic field

  A current carrying cirr +yf-9m hve upmp--2kcular loop of wire lies flat on a table top. When viewed from above, the current moves around the loop in a counterclockwise sense. What2-pk pfvm9+ e--yrhmu is the direction of the magnetic field caused by this current, inside the loop? The magnetic field

  The SI unit of magnetic field is t- . vtwtgh4ub.he

  1 T is equivalent to dp)weeur-m:*sn ;5 ib

  The direction of the force on i 6 e3g,woagua,ffi*0a current-carrying wire in a magnetic field is described by whic,, i6effgo i*uag3w0 ah of the following?

  The force on a current-carrying wire in a magnetic field is tha7 ird;ie;- oue strongest when

  The force on a current-carrying wire in a magnetic field is equal to z;mh*wh 0k)b1pvz ee 5qzd+ykjfp:6 2 kero when

  A vertical wire carries a current straight up in a region where the magnetic +f:mv(z4 b4ra lrbp0o field vector points due north. What fprm04rb4z+v l:b(o ais the direction of the resulting force on this current?

  A charged particle moves and experiences no magnf )5n8qic ji,1kkh ,q2js7g* ovb9oeretic force. From this we can concludnhqjs*k51iqv 9 gjeor,fio 2)c87k, be that

  A charged particle moves with a constant speed , ughdf*74baxthrough a region where a uniform magnetic field is present. If the magnetic field points straight upwargabd4u, x7*hf d, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constant mss-r:+*grqbax(z*9ethc qanm2 g.t ;agnetic field. The magnetic force on this pa(znsh;qq tgr*es c - : bxga.at+r9*m2rticle

  A charged particle is injected into a uniform magnetmdax)**:sy cqic field such that its velocity vector is perpendicular to th* qdmcxsya) *:e magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in a circular path in a uniform magxgy5sm2i 27 gn amnc (m1;trt6netic field. If the particle had been traveling twice as fast, the radi c1;inm2(mt rgx2mgya57tn s6us of the circular path would be

  A particle carrying a charge of +e travels in a circular path in a uniform magne2y2g/ jd*i pgy8y0wiak3ad +etic field. If instead the particle carried a charge of +2e, the radius 2 gy3/ p* idwa eijg02kda+yy8of the circular path would have been

  At a particular instant, an electron movesx hobv,+)k;p,gfcr hw* d (gj4 eastward at speed V in a uniform magnetic field that is directedcbgv (kow)+d*xh4gp,,; rh jf straight downward. The magnetic force that acts on it is

  An electron has an initial veloko*g qlp3jjwwk ; mj23rw19 szej- /d.city to the south but is observed to curve upward as the result of a magnetic field. The directio ks.2djkj3/1 wqj-wr mp3we log *jz9;n of the magnetic field is

  An electron moving along the +x axis enters a region where there is a unifo+6vui 0xd6iq ,ala 3grrm magnetic field in the +y direction. What is the direction of the magnetic aq6i0 l+rx dua,v3 6igforce on the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced by a long straight current-ca6ei( h xgg, .1ndxx,( fbgi6xqrrying wire is

  At double the distance from a long current-carrying wire, ;rsey/e3z00phr ik-2t q,garthe strength of the magnetic field producgr2sa3;k trr zp,e q0e0y ih/-ed by that wire decreases to

  Two long parallel wires plahiisb7 ef 3)w)ced side-by-side on a horizontal table carry identical size currents in opposite directions. The hf )3wi7)esbiwire 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 hoow/uf yremt5(s1 0 6,.lcwtatrizontal table carry identical current straight toward you. From your point ofa (tlw6wtf 0o/u ,.y c1remst5 view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnitude of the fz 8y3fc .thtyaxv*5 8korce between the wires is F. The current in eak 3t .58t yxfvyzah8*cch wire is now doubled. What is the magnitude of the new force between the two wires?

  A long straight wire carries current toward the east. A proton moves t.9s+hczc( ea 3mmx;nsoward the east alongside and just south of the 9xh. c3;csme( msn +azwire. What is the direction of the force on the proton?

  A wire lying in the +. ea(gh1u0b1imq 3zl lp bi7rplane of the page carries a current toward the bottom of the page. Wha u (1 blrzlpm0+1aeh7q. ibi3gt 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-by-side on a horiz6t.c;4nzm mi xontal table. If the wirncx 6;izm 4m.tes carry current in the same direction,

  Two long parallel wires are placed side-by-side on a horizos1(9 sq8l+il az bo1iontal table. If the wires carry current iql1+zl8o i9i ss 1(boan opposite directions,

  Consider two current-carrying circular loops. Both are madc8mym 7 .lov32qx xu+,pq s2afe from one strand of wire and both carry the same current, but one has twice the radius of the other. Compared to the magnetic field at the cen+ , qy2.lqu3fxvx ma8c72pmso ter 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 strand h;ws b 8o*6ui,tzre(1jy+ m( a lzrp)yof wire and both carry the same current, but one has twice the radius of the other. Compared to the magnetic moment*m);(ls r1,86 y ui zhte+joz yabprw( of the smaller loop, the magnetic moment of the larger loop is

  The maximum torque on a current carrying loop occurs when +7yvn0k 0yjikb)ik 9vx rs 88ythe angle between the loop's magnetic moment and the magnetic field vector i987 bjsixky) 0+y y 8r0kiknvvs

  When placed askew in a magnetic field,o/2c -f,juwu o a current carrying loop that is free to rotateuu oc,f2 -w/jo in any direction will experience a torque until its magnetic moment vector

  What fundamental fact underlies the operation of essentiallj; ;q0w9dsdqo 9 /gkspy all electric motors? ;/ kdq9dg;qpsj09wos

  A circular wire loop lies in a wstsu fkmn/ 8(3tw-1nhorizontal plane on a table and carries current in a counterclockwise direction when viewe83smkw1n/u f-(tnsw td 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 particle of mass m and charge q is accf7(jn e eih/ohm7c65 zs jn*u7elerated through a s7ue/z(eh n7ih o 7mf6n5*cjj 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 of B, q, V, and R.

  A velocity selector consists of a cheyd fd*p8bf*6p -w 4i*r;wex.ee.:j yld uz-oarged 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 magnddwd8 4ux6yl-.iro.* ;p e*yzpe: ewf *b-fejetic field is directed to the north. What direction should the electric field point?

  A 2.0-m wire carrying a current of 0nzd3is.d9i o 5.60 A is oriented parallel to a uniform magnetici.oz3ddsn 59i field 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 fl;4l6;agk6k4mkqut $30^{\circ}$ 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 wirel2 0djq .qk luw k 8u1o5for993jn)the carrying 5.0 A when it is placed in a magnetic field of 0.020t rnjjo9k 1u)3w .8fu5kled09lhoq 2q T? The wire makes an angle of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 t7o(rdhc*c+8 il wx.u m 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 nc *7udo ci+ 8(rh.twxleeded in order for the magnetic force to cancel the weight of the rod?

  A stationary proton is in a uniform magnetic field s 6dut0h/ek:ioy9ej- ocolow- mn6s( /z:e-xof 0.20 T. What is the magnitude of the magnetic force ssox:/ zmk(nl9w6 -c ujo-dhe6eo/yo-t:ei 0on 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 sp e4zqt/ vw3ff i;w/(ipmgq3j-dz)h -yeed 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 spem5lf9 ccr5o j;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 north with s0yiy 5. sjqtlaa6r,d +peed $4.0 \times 10^5 \; m/s$ 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 )mzqkk 7 2dq0wbncbop5s1.f*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 0 fymo tvjc9(e,pw l-zw8sr 7/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 speedij1 x1m31o*0lqr8gzsbo jo j: 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. What is tht ocevd 5d,.(qe magnitude of the magnetic t5(,vd. oqcdefield at a distance of 0.15 m from the wire?

  A high power line carrying 4;) l0k6k5rgspdyh vo 1000 A generates what magnetic field at the ground, 10 m away?rhk)p;lk dvg4y6o5s0

  How much current must fl f3k fq)a4. bi+j fs/xypakc,2ow 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 is the41 t+b( kfbl1:m8g.4yvhqa7upnn knf magnitude of the magnetic field due to the wire equal to the strength of the Earth's magnetic field of ht:kkl(7qv4n p . gn+1n b8a14uyfmfb about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carryjvu: n.w: k7fy6d1i:o jvvc, a currents 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 poina16uf7w :yjvv d:njv.,:oick t that is 20 cm from one wire and 60 cm from the other?

  Two long parallel wires carry currents of 20 A and 5.0 A in 0q; sxkn,;bs x1di.t fopposite directions. The wires are separated by 0.20 m. What is the magnetic field midway betwe;; t 1 .nqi,xxsk0sdbfen the two wires?

  Two long parallel wire8 f69pzobc. evvvp+ c(dx2s6ns carry currents of 20 A and 5.0 A in opposite directions. Tso8z9e+cc.fnb66 xpvv pvd 2(he wires are separated by 0.20 m. At what point between the two wires are the contributions from the two wires the same?

  Four long parallel wires each carry 2.0 A in the same direction. They are pararjh1b+ -2lxh z-ar a2gllel 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 field does one of the wj2rh glxr 1-+b-zah2a ires experience due to the other wires?

  Two long parallel wires carry currents of 5.0 A and 8.0 A in the opposite dirw 9*c dp7,w y-5j0xlt5mjwmbsection. The wires are separated by 0.30 m. Find the magnetic force per unit le,cw 95 xylj7mpb0stwmj5dw*-ngth between the two wires.

  What is the magnetic field 7ek . 57o nikm-qbz,fuhn05zg at the center of a circular loop of wire of radius 4.0 cm when a current ou.0ke5gniho kz ,7nf b7m-z 5qf 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. What magnem4lb+lrc m3b9 tic field is produced at the center of the solenoid when a cu mb3r4 +mblcl9rrent of 10 A flows?

  A solenoid with 500 turns is /nwnuq vy/06hhf w*p)ptah,90.10 m long and carries a current of 4.0 A. What strength of magnetic field will it have at its cente uahp*/w6/h w0)tpyvnh9 n f,qr?

  How much current must pass through a 400 turn coil 4.0 cm long to gej86y b uvoju/o+g9u m9nerate a 1.0-T magnetic field at the ceu 69gju ovuyj+98mo/bnter?

  How many turns should a 10-cm long solenoid +x 83vm c unmnm*bgew/0p :rb;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 re 0j,dwg+7 xeaeam:br80 po1c zctangular loop of 120 turns that carries 6.0 wce ,xb18ora 00jdz7 +mae pg:A if its dimensions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic fix r6 u zlh;0wd*-b:ibzeld of 0.30 T. The current inz :d0ru;*i -bl xhzw6b the loop is 2.0 A. What is the magnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sec*l )p m*wy8jbztional 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 9b. 1hw npuyn8is in a magnetic field of 3.5 T. The loop has an ar1nnb8ywu hp .9ea 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 magnetic field of +wagx1;d)4mhip kkg:0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when tk:mwxph k ;+ dai41)gghe plane of the loop is parallel to the magnetic field?

  A circular loop of wire of radius 0.50 m is in a uniform magnelx38 rlm:omjxq o/::j tic field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the:lo:oj3j rmqxlx: / 8m plane of the loop is parallel to the magnetic field?

  A circular wire loop ofhc2i d4j 8:j,+td3pslk0 rive 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 particle (ch6 j(-9f ,ta1yic i7wmnja.fufarge 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 velocitrnyb1 s4 4k1u8 bt.wnqy $6.9 \times 10^6 \; m/s$ 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 the) )4e2iozgrll9 qgmc ;n moves into a magnetic field me2 ) lrcoqlggz;49)iof 0.040 T. What is the radius of the proton's resulting orbit?

  A proton is accelerated from rest vc 78j:i3 jh/g yjwe8xthrough 500 V. It enters a magnetic field of /:jg 8e c8h73vj jyixw0.30 T oriented perpendicular to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated throughspd y6(( 14ylb neg)of a potential difference of 10 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-field6d1glnoeyf (p bs)4y( is required if the particles are to be undeflected?