If the north poles of two bar magnets are brought closej8tfd0jzxj 0/02f idg l/ sgf5 to each other, the magnetsdx 00/gj2 fff05z8jld g/sjit will

  If the south pole of one bar magnet is brought near kh.le);8 t o872gs,cr)1cwa lc; scsfr j3 azzthe north pole of a second bar magnet, the two magnets will s7g;f3wrc ccsz) ahzl,.8a8o;jkcl s2e1r ) t

  If a bar magnet is divided into two equal pieces, kbv-bk*l;sw .

  The Earth's geographic North Pole is m ,h18r,gvedsgkn-+ zx agnetically a

  The south pole of a mag tama/+.kr bqlla;+i 8net points toward the Earth's

  An electric current prtvzl:6i(t50. c cqs3t uo3w reoduces

  Which of the following is c ( v()wjta 4-3v6 mjlg,huw5ywf)blx lorrect?

  A vertical wire carries a current straight down. To the eanm blzgm9/47rzh3 gu +st of this wire, the magnetic fiel rnlm3mhug7+ zz 4g9b/d points

  A horizontal wire carries a current straight toward you. From your point of v+xa .;y gqy0yvnp f1*h1 agzz:iew, the magnetic fieldy*:n h;0 zqggafyp+xayv1.z1 caused by this current

  A current carrying loop of wire liqroc p*nee:; (es flat on a table top. When viewed from above, the curn e;:*(eqrcpo rent moves around 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 circulararyczz.vw /5 h21 n4pu loop of wire lies flat on a table top. When viewed from abov5 nz14/r2pvc zwuyha. e, 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 magnetic field isq+xe9p.zkzb a v/x6h3ppa 27 iau8t: c the

  1 T is equivalent to )1v gdy5of s.ctz-xw6

  The direction of the force on a ce 4y *al5yeu+aurrent-carrying wire in a magnetic field is described by eya+a uley45*which of the following?

  The force on a current-carrying wire in a magnetic field is thehs)m6(gkwyhs9* ko*)g h hl4zsm,2 e a strongest when

  The force on a current-carrying wire in a mauz+ *t9jr tmw.gnetic field is equal to zero when

  A vertical wire carries a current straight up in a region where the magnetict7xsv6tqa c1u c 2ip)/ field vector pc t17qvc/asut 2)6pixoints due north. What is the direction of the resulting force on this current?

  A charged particle moves and experiences no magnetic force:c.vf jl/ijbb 24.mtws8egyc)6p 3w d. From this we can cop4yvdl 2 .e8b).m 3wjicj b/f6tcgw:s nclude that

  A charged particle moves with a const3c porv4h:jf83 yrii qia00g/ ant speed through a region where a uniform magnetic field is present. If the magnetic field points sti 0fgayip8:jhc4ror/i 0qv33raight upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constanyvm ,3p g6y.ehcm(vz 1t magnetic field. The magnetic force on this particlevp1y gv6yhm,z3(. emc

  A charged particle is injected into a uniform magne.v r7wym8e :vmtic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring the particle's rm:vmw7.e 8v yweight, the particle will

  A charged particle is observed t/opa 1bbykd;f e+qn /f6 yq/e.raveling in a circular path in a uniform magnetic field/fbe;bep+ ykd. q/q /fo16ayn. If the particle had been traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of + ,y.mc9 rraj )kx+7fwdw)ep,s 0vnu a5e travels in a circular path in a uniform magnetic field. If instead the particle carriedwy5.)+jad pr0,9r ,a7fvn k cxsw) emu a charge of +2e, the radius of the circular path would have been

  At a particular instant, an electron moves eastward at speed V in a unifujz6 q;w fy+j;orm magnetic field that is directed straight downward. The magnetic force that acts ouw z;f j;6qyj+n it is

  An electron has an initial velocity to thp-4d ;q ld5 mdingc6af7;b,n0ygx+iye south but is observed to curve upward as the result of a magnetic field. The direction of the m+dp dn 0,-gqli6f dan4g5b;;i mc7yyxagnetic field is

  An electron moving al** j jf2nstk+ +mls/i- dqxf5mong the +x axis enters a region where there is a uniform magnetic field in the +y direction. What is the direction of the magnetic force on the s5*+kdm-ft/sj*2i lqfm j n+xelectron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced by ilpeup 4 v gv:*nvo81(a long straight current-carrying wire is

  At double the distance from a long current-carrying wire,)4br ouq86pi j the strength of the magnetic field produced b jubp864)or qiy that wire decreases to

  Two long parallel wires phi38jmg( di 5tq1iep :fz:nf *laced side-by-side on a horizontal table carry identical size currents in opposite directions. The wire on your right carries current toward you, andh iig(t:8:ipfm ed5j1fq* n3 z 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 sipjb5for-* sgsmid8l *un :mn4-/j-scde-by-side on a horizontal table carry identical current stra *jo*g4ru-ndp5: 8ns-mcs-f/ sjmbl i ight toward 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 thkl8 jx3rdhr+ 6e force between the wires is F. The current in each wire is now doubled. d3rhkrxl j 86+ What is the magnitude of the new force between the two wires?

  A long straight wire carries current towardd;l- ,6 vx qj4 dvxcd2i pqd/9g,m:shm the east. A proton moves toward the east alongside and just south of the wire. What is the direction of the force on sc-6mpd;qx2:mdgv,dqhvj / , 4 9dlixthe proton?

  A wire lying in the plc swy4e gon9vho:n-g t)37v9j ane of 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 is moving perpendicularly toward the wire, also in the: -y og4 voh3nev9jn)t9cs g7w plane of the page, from your right?

  Two long parallel wires are placed side-by-side on a horizontal tablebx)st7 a;;x 3 u*b2epgld1hwi . If the wires carry current in the same direcx x ;au;p)l gt7sdhe2bbw1*i3tion,

  Two long parallel wires are placed side-by-side on a horizontarnxl4u4ocp/s,b*1ru t; vy ecsiv)/ ,3q6efrl table. If the wires carry cuscsl t6r/y; pvo,*unrq i3xee cu/) v, 4bf41rrrent in opposite directions,

  Consider two current-carrying circuitfmazuslf 2 uy e4( .(z14vo7lar loops. 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 a 4t 2uif.yz z1of(4vs(7mau elt the center of the smaller loop, the magnetic field at the center of the larger loop is

  Consider two current-carry urzbk;e(,su e, irv98ing 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. Compared to the magnetic moment of the smaller ur, rzb(;ske,9e u8ivloop, the magnetic moment of the larger loop is

  The maximum torque oz cwlkl84y o1-/ qh,zrn a current carrying loop occurs when the angle between the loop's magnetic moment and the magnetic field vector ihr8 l4zowk-yczl /q 1,s

  When placed askew in a magnevws(h4ank p,2 tic field, a current carrying loop that is free to rotate in any direction will experience a to24 (vwkhp,ns arque until its magnetic moment vector

  What fundamental fact underlies the operation of essentially all electric mhjj vv v2ee)*g63g xpj:,(aa motors ,p*3g vj:(xhv v2egjeja)6m a?

  A circular wire loop lies in a horijnkh2e/yy8 mosw+rxs5) 3x*vzontal plane on a table and carries current in a counterclockwise directiox2yk3wn5se + )8ymov /srhj *xn 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 particle of mass m and charge q is accelerated 2x(-wjd 4xlbr5 ks. eyh*s3j u i.g:ttthrough 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 ang.rbjlsui 4s3 2w5tkj -. :(eyht*xxdd 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 pasrkm: hlua(c( fk d3ia +i7o8a2sing through crossed electric and magnetic fields. The forces exerted by these fields are in opposite directions, and only particles of a certain velocity will mov3m+oh clkra:i 2iafkd(a 7u(8e 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 a un50 s i/2n45n zyrywxqxiform magnetic field of0/ 5sziqrxx2ny4 5wn y
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a direction bt+/l9x) wu -9 ma-v kqbgcf-oof $30^{\circ}$ 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 it is pwvj+3fl(hg;n bh-(oelaced in a magneh +(ew;j3(vhf gn-ob ltic field 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 h i/kis38yo. 7*xk7btr 3mlxclong has a mass of 0.050 kg and is in a magnetic field of 0.10 T. What minimb 3ol8x thcy7sr3 i7/kmx*k.ium 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 isyww(+ w5p.h/tjbx 0z s the magnitude of the magnetic (j5x0sw.bz+t h w/ pwyforce 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 of .k hh 9+aa pto5lg:vyp8)o-)1 atsxd v$5.0 \times 10^4 \; m/s$ 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 speed6y)tcwpie, 8s 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 speede4)ow3(yqge a $4.0 \times 10^5 \; m/s$ 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 oz+k:d wu*d/k7lgmd b ,f $8.0 \times 10^6 \; m/s$ 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 witg fc(kw3bk y svrf449/, *brjth 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 speed o z7,5n2 ovpjltvdf, i+f $3.0 \times 10^6 \; m/s$ 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 straightiwif a7b;j;h: wire carries a current of 25 A. What is the magnitude of the magnetic field at a distance of 0.15 m fribi7;: w; ajfhom the wire?

  A high power line carrying 1000 A generates what magn1*3gn;t lh i4l09eqlbu0 rfli etic field at the ground, 10 m anbur03hl09iel ; ifllq 41g *tway?

  How much current must fv k :4.ptcl vmh)5ma-ulow 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 carrm10y- ;thoe xkying a current of 5.0 A is the magnitude of the magnetic field due to the wire equal to the strenkh;0ty o-mxe1gth 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 dz -ma,3m: q0dn:j vphxirections. They are separated by 40 cm. What is the magneticn-amz pxh::d,3vqm0 j field in the 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 dyhhcn7c7+q+q2 kzc+ A and 5.0 A in opposite directions. The wires are separated b zkqch2++dc +h7cynq7 y 0.20 m. What is the magnetic field midway between the two wires?

  Two long parallel wihx 8rg+nl+nr-res carry currents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. At what point between the two wires are the contributions from the two wiresr8 r-gx+n nhl+ the same?

  Four long parallel wires each carry 2.0 A in the:z*/ogozw0egw,p ue3 zm,0 wg same direction. They are parallel to the z-axis, and they pass through the3p zzz g*gw0o,ome w/:e0wg,u 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 5.0 jj rj8ut+:xj 7hcs p/-A and 8.0 A in the opposite direction. The wires are separated by 0.30 m. Find the magnetic force per unit l-8j jtu+jjs7c:h/xp rength between the two wires.

  What is the magnetic flkpjvp*- /n.s6x zs vo/ 6at4field at the center of a circular loop of wire of radius 4.0 4l/k ztv*6/xsvap-n.j6of s pcm when a current of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. What magnetic fw jv24p,0apca5*bv xfield is produced at the center of the solenoid whenvwp 5pv,j4* 2axa cfb0 a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carries a ev*zz0df56o u1al8i p current of 4.0 A. What strength of magnetic field will it1da v8zl i0of*e 5upz6 have at its center?

  How much current must pass through a 400 turn coir 5xfjk tw5e2 osylsmj0. xz99r33m8kl 4.0 cm long to generate a 1.0-T magnetic field5x8 mrk9.m2z f0js swlerko3y5j 9 tx3 at the center?

  How many turns should a 10-cm long-l(fz0 e5p5er u ofmr0 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 rectangular lod3eayu2n25a a c;u3zeop of 120 turns that carries 6.0 A if its dimensions are 4.0 cm x 8.0 cm?e2 5ac nd33eauyua2z ;

  A circular loop of wire of radius 0.50 m is in a uniform magnetic fielju5 qfpe(ux +hqoza; ,wc908 id of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane of th9weza ui058c,u+q o; xhqpjf(e loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sectional ar0 zwt; v8gst/ t:rj,ymea $0.12 \; m^{2}$ 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 2 wy7oeyt: rg7magnetic field of 3.5 T. The loop has an w7o r:e2y tyg7area 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 o)tnb7fkiqve8 qm-7 i8m 7.szpf 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 magnet zq8i)7778fq ei tmm k.-nspvbic field?

  A circular loop of wirb.e4rcit:, gdxb3fi ,gm z5 lo6 x;-qte 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 magnetdgtx : 4q ,5-getolm;b ,f iix.cz6rb3ic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop of aree fu4h6 a9sc. 3fzj3 dw+2xkfla $0.25 \; m^{2}$ 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,)ymc+6ywfodf; 0e (ly a single-charged particle (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 velocity kq g8m4kdui7 nwtby i/f 6yw+v:t4/x3$6.9 \times 10^6 \; m/s$ 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 thro n/go ,kjh)lw g2armyh b31(5jugh a potential of 1.0 kV and then moves into a magnetic fiel1l,3grgam k nj/j)y(5hwo 2hbd of 0.040 T. What is the radius of the proton's resulting orbit?

  A proton is accelerated frqq 8+y4so2vp hom rest through 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Determine the radius of the path it + v2yoq8hp4 sqfollows.

  A beam of electrons is acce,c d3t6*l4 (ulijbfnrlerated 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, what value of the E-field is required if the part l ic,u(bd34*t6flnr jicles are to be undeflected?