If the north poles of two bar magnets are broghm(f( :39g lvnwsd3 unas 33gught close to each other, the magnets wil3la(gs3hu9g3s g 3( :vfmndn wl

  If the south pole of o) v+ (bn*.a3e snu m9 v9tm5ubqsle+hmne bar magnet is brought near the north pole of a second bar magnet, the es m.+u 9hblsbnm5( 39a+uqt vn) vme*two magnets will

  If a bar magnet is divided into two equal pie(td) vh2 x3ec w kymmm1h75-d l.etn0hces,

  The Earth's geographic No.gbv-udx* kz ;rth Pole is magnetically a

  The south pole of a magnet points toward g 7xjn.dvjv p6bw,z53 the Earth's

  An electric current producesk qgtz fr l.l(k-+qx34

  Which of the following is corrsp2k776chk b6i cez2hect?

  A vertical wire carries a current straight down. To the east of this wire46bzq y(bf be xy5h)s8, the magnetic field poin4 fx be yy8hb)(6sz5qbts

  A horizontal wire carries a current straight toward you. From your poinvydu:0b7(aif/ zzr2 nt of view, the rvd0au bfz2(ny 7/:zimagnetic field caused by this current

  A current carrying loop of wire lies fl ys ywx/d*6usdmi ivi42n6: 7hat on a table top. When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic field caused by this current, outside 6*huiy d4swms6/ xy:di7vi2 nthe loop? The magnetic field

  A current carrying circular loop of wire lies flat on a table top. When vi2w:l,xqkg13vy p /5utxz mg3 pewed from above, the current moves around thxq l5/tuxk 3gpyvwp1,2 g3:zm e 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 s:7mvvb9dnp,3 /snil field is the

  1 T is equivalent tow/5ig gvtp: b,

  The direction of the force on a curren5 xxr jr;5zd 9s3vy 2foyu+uf(t-carrying wire in a magnetic field is described by which of the following?yffxx53odu2j 9rv 5s y z+(ur;

  The force on a current-carr o uo:g+ moc7i bqoed4;v0sf*1ying wire in a magnetic field is the strongest when

  The force on a current-carrying wire in a magnetic fi0ozjw,4w vy.ield is equal to zero when

  A vertical wire carries a current straight up in a region wh/*nj)zbgb 4ksere the magnetic field vector points due north4 zn)/b*sbg kj. What is the direction of the resulting force on this current?

  A charged particle moves and experiences )1u(us xi0/ (;zqvnh fe s-+rkyrw*xino magnetic force. From this we can conclude tha(ei -u0xvz f/x(sn whr1ui+r sky*)q ;t

  A charged particle moves with a constant speed th9jzl840zj;p sxadd )hrough a region where a uniform magnetic field is present. If the magnetic field points str8dzs);pzj0a 4xdj h9laight upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constant4gnmg ps,oz 62 magnetic field. The magnetic force on this part2ggs o4m,6znpicle

  A charged particle is injected into a uniform magnetic field sucddp1 3-baidzt9-m3o3o h2 jjch that its velocity vector is perpendicular to the magnetic field vector. Ignoring the particle's weight, the particle wjd z2oa1d3h3-i3m9obpt jdc-ill

  A charged particle israp h9cwkm::7 c-k ; gr-z,zbx observed traveling in a circular path in a uniform magnetic field. If the particle had been traveling twice as fast, the radius of the circrma 9c rhbcpg--;7z x:: kk,wzular path would be

  A particle carrying a charge of +e travels in a circularfg4wr 8k+qt z( path in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of the circular path would havgq +w8r4 tkz(fe been

  At a particular instant, an electron moves eastw- jt,lqkf0u21 vjc1g/d 3ycfyard at speed V in a uniform magnetic field that is directed straight downward. The magneq d32 11lt0cvf -f ,yjgkuyjc/tic force that acts on it is

  An electron has an initial velocity to the south but is 5c xt.pu) o ijtq)ui8ob/ c)q;observed to curve upward as the result of a mag/. c;5tq)u toixobup j c))i8qnetic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a regio* viv veh:;r5on where there is a uniform magnetic field in the +y direction. What is the direction of the magnetic f5;vo ie :hvvr*orce on the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced by a lorv)eg; b* vioj)ih* u8ng straight current-carrying wire is

  At double the distance from a long current-carryrm3+lg / cy+pw6qrdx 3ing wire, the strength of the magnetic field produced by that wire decreasr pydqc/l3+mwr+63 gxes to

  Two long parallel wires placed side-by-side on m;(iniq6ju k 0b m 2ykn*.9gbra horizontal table carry identical size currents in opposite directions. The wk9g(qki60umn.y ibm njb r; *2ire 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 plz +*qr.bmaa ,iaced side-by-side on a horizontal table carry identical current straight toward you. From your point ,*+mrb.ziqaa of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnitudezqxgq.8qd jj54ib+ s: of the force between the wires is F. The current in each wire is now doubled. What is the magnitude of the new force between the two b+8zj sj.gid q5:q4xqwires?

  A long straight wire carries current toward the east. A proton moves tob,oo x*j5*e /ui pihd*roys;8ward the east alongside and just south r;doo h*iyj,ebspo5 8/u*x i*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 suf4 e93y/jirx+zq d -bottom of the page. What is the directione-rdy+z39ui fj qsx4 / 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 b7ek+y /i y1tpz7ma0bside-by-side on a horizontal table. If the wires carry currezk7+7 /amp bi1yb0ytent in the same direction,

  Two long parallel wim 5wlnswegsl 07er -c( ms;gqw:dr 3;+res are placed side-by-side on a horizontal table. If the wires carry current in opposw;ngs3dmr7le;s(mwer l+50wg :s -q c ite directions,

  Consider two current-carrying circular looy;i6,c u,iejm ps. Both are made 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 ceec;uiym 6j i,,nter of the smaller loop, the magnetic field at the center of the larger loop is

  Consider two current-carryi5ny )k5j g(ev5zr, tngng 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. Comr55g nz5kv,)yjnt(egpared 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;kjbnvp41wwj q3 v9 z. when the angle between the loop's magnetic moment and the magnetjwp9 wj n3v.b4vz;1 qkic field vector is

  When placed askew in a magnetic field, a current carrying:mpb585sr eq,i l, izd loop that is free to rotate in any dilmqi5ip,sz,r5e 8b :d rection will experience a torque until its magnetic moment vector

  What fundamental fact u5, udxgdi*h;jw 4owr+g-rgcy wtmm d .4 368ninderlies the operation of essentially all electric motors?rm5m n6ug3t-gdc iywd*4 ,gj.+ ;ho d4irw8x w

  A circular wire loop lies in a horizontal plane on a table and carrie :*c2+dmkpdiq2(k(cxa ;tjji s 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 the table because of the+k ik;mqd(d2j(ip*: xajc t c2 torque caused by the currents interaction with the magnetic field?

  In a mass spectrometer a particle of mass m and charge q is accelvlfdmeqnv qgs9 t;a mo )7b-*m2.;f7zerated 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. Dermatd2 q lbs o77v;mz.eg* f);vq-9f nmive an expression for the mass of the particle in terms of B, q, V, and R.

  A velocity selector consists8m:olt/ iah t *r 1w1vm;9s.p5ntnke w 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 fm5a itsw .8vpmw1nt/rh1eo*l;t9n :k ield is directed to the north. What direction should the electric field point?

  A 2.0-m wire carrying a current of 0.60xf8 ti qoko6m3tmg*2eb 7 7mm5 A is oriented parallel to a uniform magnetic km3x mf7gb6qem 5o8*2it tom7field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in azab r(z+cf,f8 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 carrying 5.0 A wheqoij /8cqcp:.) x,bbcgza9f9 n it is placed in a magnetic 9q x) zogpfai/b,j:cc.c98b qfield of 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 anxr*(u ;g c)hdr7li+ 9a w7kgaoknon(5 ; tzpo/d is in a magnetic field of 0.10 T. What minimum current in the rod is needed in ordaugo( r)k(d i5 7htp;lg;xwnz9cro+ n/ k *7oaer for the magnetic force to cancel the weight of the rod?

  A stationary proton is in a uniform magnetnqh86h z 9cer*ir qp,;dc* o8jic field of 0.20 T. What is the magnitude of the magnetic force on the protonq i6;errdpn9 88,zhhcj*qo c *?

  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 wi;h j0cazai/uafah ;v 22nr4q/th a speed 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 sp.uu0g:n1 mvabhgb . 4keed 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 speed ecuy.4w4ajdd v )gv-3m- l1kj $4.0 \times 10^5 \; m/s$ 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 withu6 zva)8yj*boj 6hh9ugh14lq 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 wiv,5vouuisa +1+ .ka azth 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 speedem k;ns)f3w0mfxginsto( ;m/etald.o) ./r8 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 wiresj 0 t/uy/r,mkpj3 wa* carries a current of 25 A. What is the magnitude of the magnetic field at a distance of 0.15 m from the wij w3*ys,m pua trj/k0/re?

  A high power line carrying 1000 A generates what magn+9kg cpciy-mt2r3i6 uetic field at the ground, 1kp rcitc 2u6m y3i+g-90 m away?

  How much current must flowvwb4 u :-,17w6 n w6ki9dsuk-konvohl 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 as zw qz11 .xb:hn r0c4oh5.kc5.0 A is the magnitude of the magnetic field due to the wire equal to the strenrcbh1..k0a 4zn5zoc1h : sqx wgth of the Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry current cv6ma b2szw c9wl;,z7 o0y5ios of 10 A in opposite directions. They are separated by 40 cm. What is the magnetic field in tzl mov702 a;9iwbzocc, syw65 he plane of the wires at a point 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 Ax 45 dirtefq0b7hkx9( in opposite directions. The wires are separated by 0.20 m. Whqre9btkx 54xd ihf70 (at is the magnetic field midway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite di m(uc +ad).yqe h3y.iprections. The wires are separated by 0.20 m. At what point between the two wires are the contributions from the two wires the ( uh)y3pc+.ie .yaq mdsame?

  Four long parallel wires each carry 2.0 A in the sae pi5w1(8 tcneme 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 plane. What magnetic field does one of th1 i(tnwepe5c 8e wires experience due to the other wires?

  Two long parallel wires carry currents of 5d:p.xw f8lop8 h ;b)b8mf 9fev.0 A and 8.0 A in the opposite direction. d; bmh)p9. f oeb8vx8f w:8flpThe 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 crbj -bu r3ie33jc-c .venter of a circular loop of wire of radius 4.0 cm when a curreni3j3 e.r- 3-jc crbuvbt of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound lev3l y++s,wba0e;9bgbn au5 with 5000 turns of wire. What magnetic field is produced at the center of the solenoid when a current of 10 A flowe;yw 3 llu+ae g5+bsb,09van bs?

  A solenoid with 500 turn)yh1m,mr(a kcozc)9 y s is 0.10 m long and carries a current of 4.0 A. What strength of magnetic field will ityc)c ,r)m1 y hz(o9akm have at its center?

  How much current must pass through a 400 turn coil 4.0 cm lfp*o2, gkc6jwong to generate a 1.0-T magnetic field* fjpg, c6owk2 at the center?

  How many turns should a 10-cm long solenoid have if it is to generate vdtz2c2 3exg8a $1.5 \times 10^{-3} \; T$ magnetic field on 1.0 A of current?

  What is the magnetic momedw+.g) ed htordo 481mnt of a rectangular loop of 120 turns that carries 6.0 A if its dimensions are 4. 8wd.ot+4r1 dh m)gode0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is u8i(fo/uxpec:x i4t3 in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. What is the magneti/83t u ix:(o4efipucxc torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire l/n+az.( cbf cvz7h+ghfi2a+ 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 Ac4 hhr 5/j5 :eplqi/fs is in a magnetic field of 3.5 T. The loop has an are/c 4:l eq5si/jpr 5hfha 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 wiriw9thqebl6dhy5o 1 lu4 .t56te of radius 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 magnue ltqh1y49dwtth5 l6.5b6 oi etic torque when the plane of the loop is parallel to the magnetic field?

  A circular loop of wire of radius 0.50 m ishf2lv+yh+h-vdmf i/)nst*s zcy /s76 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 paralncs/m yhhlf*v2s 6iv+/f+s zh -7) dtylel to the magnetic field?

  A circular wire loop of aredx4 dyda 1o zc4*l3l+la $0.25 \; m^{2}$ 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 particlew ;weol-ct* 6*px-uz y 9jd8ypc3q0fo (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 velocityvd ame,v928hr+ spu9s $6.9 \times 10^6 \; m/s$ 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 moves into a magneti:o( c,fnizo q6c field of 0.040q ifozo(6,n c: T. What is the radius of the proton's resulting orbit?

  A proton is accelerat 9pm 2i)wtw.rqed from rest through 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its directip rtimwqw.29) on of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerat 5y4 naw3n1pmyed through 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, wh41 y wpn3mya5nat value of the E-field is required if the particles are to be undeflected?