If the north poles of two bar magnets are b4y)afwh)eg- u:j c xxx5 h5wj,rought close to each other, the magnets wi:55afxujxj )g 4,ewy hhc)w-xll

  If the south pole of one bar magnet is brought near the noxnev3bp5lt5 v 7we76 mrth pole of a second bar magnetpev3 7e6t5 7mbnlwxv5, the two magnets will

  If a bar magnet is divided into two equa g sfudr8x (2qsa5ya;,fs u*w9l pieces,

  The Earth's geographic No1 faljuei199j8+kxbw rth Pole is magnetically a

  The south pole of a magnet points toward t*/t cren3vji ;0c rqd/ eu2l-nhe Earth's

  An electric current produuk2t 94ie ollw5tq-a9ces

  Which of the following is coru/-t(6:akc3fl vzro drect?

  A vertical wire carries a curre5gug p wz.;p5jl3yd. a ggk1dgy2)h8tnt straight down. To the east of this wire, the g3py a51 zydg5. w.gugtk )h82j; pgldmagnetic field points

  A horizontal wire carries a current ,e:mcx+ kbci6c/cty+jr):ue straight toward you. From your point of view, thxrb:c6uc /,) cjit:ce km+y+e e magnetic field caused by this current

  A current carrying loop of wire liesqii z8s f0;(eu0beez1 flat 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 8zsqe; zie1 bef(0u0ithis current, outside the loop? The magnetic field

  A current carrying circular loop of wire lies flal,jgz+dur*fit2// x62zzuw3azhb x ; t on a table top. When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of gx l2ft6, dzw2rz xz +jh /uia3b*;uz/the magnetic field caused by this current, inside the loop? The magnetic field

  The SI unit of magnetif0k;7b u0)e)zvi np dsc field is the

  1 T is equivalent tor3 ve(7j 33xynq m8iq oqj50ng

  The direction of the force on a curregu(9xabbr ynp yy.:+*nt-carrying wire in a magnetic field is described by which of the b9(y aguryb xn.*+yp: following?

  The force on a current-carrying wire in a magnetic fieldc-) gdwkxu(l. is the strongest when

  The force on a current-carrying wire iw7 a2kzen;q-u n a magnetic field is equal to zero when

  A vertical wire carries a currentnjy8n u8m2f+n 1hc n9g straight up in a region where the magnetic field vector points due north. What is the direction of the resulting force on this currenn8 c+hnuf892 n1jymgnt?

  A charged particle moves and experiences no magnetic force. gjaxw3/y+e.mkxi38 f n.zo u7 From this we can conclude thajfe+ 8g xu.oxk3 i.3mnwza 7y/t

  A charged particle moves with a coa/hf+41e b/7yz gbs gynstant speed through a region where a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting o+1b yags/fz h7beg4y/ n this particle will be maximum when the particle moves

  A charged particle moves k 8;6f-t sifud6a6 (wgqrmsr7b.k. bc across a constant magnetic field. The magnetic force on this r6f .i8 caqtu67mws- sbkkb 6.dr(gf;particle

  A charged particle is i( )/nerd*m*h*qi m,csoqqmm )m4ih4s njected into a uniform magnetic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring the particle's weign)m immd shc mq(** r4s)iqe,4q/* mohht, the particle will

  A charged particle is observed traveling in a circular path in a uniform ma9;m zqowp.r2k95mtj k gnetic field. If the particle had been traveling twice jk m2m;oq. 5tzk99rpw as fast, the radius of the circular path would be

  A particle carrying a charge of +e travels in a circular path in a uniform magnfdtre 2 kk2b3qk vq70ot-7-zf o x3)hnetic field. If instead the particle carrirf qhtdvko7)of q-t2e k0k2-b33x nz7ed a charge of +2e, the radius of the circular path would have been

  At a particular instant, an elrn+)e5xkc r.m ectron moves eastward at speed V in a uniform magnetic field that is directed straight downward. The )kme5+crn x r.magnetic force that acts on it is

  An electron has an initial velocity to thu78,alopmwn*0fzfb0 rxmq dmk/ h( 60e south but is observed to curve upward as the result of a magnetic field. The direction of the magnetic field is06/kz *0mmmlr(fo aqnuhw,fxpbd0 8 7

  An electron moving along the +x axis enters a region where there is a unifor((ui-wr5 bup,1 r fov4fo9koem magnetic field in the +y direction. What is the direction,1wvoborru59 u 4(fo-k(pife 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 cur9w 5dl1he4 sjl6ii ri0/p/zpn rent-carrying wire is

  At double the distanpb9n8(ks yqc1l4n;g u /iu.zch. )usnce from a long current-carrying wire, the strength of the magnetic field produced by that wireu(gsk i..9snqb;lp)/8 znn41uy ucch decreases to

  Two long parallel wires placed side-by-side o ad6bnpj4dc/( n a horizontal table carry identical size currents in opposite directions. The wire on your right carries current toward you, and the wire on /jcn6 dpdb(4 ayour 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 horizontal tas lh zgl(nrx79w4 14a 8qqjhf3ble carry identical current straight toward you. From your point of view, the magnetic field at the point exactly between hfj 1l4sh8zn7 4a qg(rxl3w9 qthe two wires

  Two long parallel wires carry e,rj2cf3 iy4i qqual currents. The magnitude of the force between the wires is F. The current in each wire is now doubled. What is the magnitude of the new forcrifj,2q3ci 4y e between the two wires?

  A long straight wire carries current toward the f:su * o ng,c:uu8g,yzeast. A proton moves toward the east alongside and just south of the wire. What is the direction of the8:y u g,z:osfncguu,* force on the proton?

  A wire lying in the plane ofy*w3 l,px u fdz6/j+ hil9spj2 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 perphpl,jju*z/ix9+6l3wfd y 2spendicularly toward the wire, also in the plane of the page, from your right?

  Two long parallel wires are placed pewl+oz.yq:ps*e+ n0 side-by-side on a horizontal table. If the wlp0yeqn*wp+ e:z o s+.ires carry current in the same direction,

  Two long parallel wires are placed side-by-side on fvrx:u0g ke rs j:z;b0i3t9x7 a horizontal table. If the wiresz x r;v:0ijxgk3fu 0trb9 :7es carry current in opposite directions,

  Consider two current-carrying circular loops. Both are made from one strand of1 (;0izc./zk6j-j v; vormgudzc xuf5 wire and both carry the 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 th0kxz; z.j 5/ v6d- urco(um1fcjgi;v ze larger loop is

  Consider two current-carrying circular o3p6 )*jyynlsloops. 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 loop, the magnetic moment*psoln)yj3 6 y of the larger loop is

  The maximum torque on a curren-34rgl/ zpw33f glsot t carrying loop occurs when the angle between the loop's magnetic moment and the magnetic fiel t w3gog4r/-fplz s3l3d vector is

  When placed askew in a magnetic field, a current carrying loop that is free /l(*l3yvic cb to rotate in any direction will experien/l3c*bcl viy( ce a torque until its magnetic moment vector

  What fundamental fact underlieseh7z+sufn ;z2 the operation of essentially all electric motors?zfenu sh7+z 2;

  A circular wire loop lies in a horizontal plane on a table and carries e+ nbi*s je3h+current in a counterclockwise direction when viewed from above. At this point, the Earth's magnetic field points to thsn* ij+heb+3 ee 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 acceleratef(9lt2 t2v5rq pdwrl.d through a potential difference V atl w.25vr( 9q2dtrfplnd 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 co ew9lcv6(:k:wq pp 0oonsists 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 selew c::eqpk(60 9vlwpoo ctor, 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 ori6v1oi ( b;0yy kxblyf1ented parallel to a uniform magnetic fieb6ovbk 0(1l1 x;yf yyild of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a curr9kp )1vvkunbvhdrq9(,, 0 alient 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 carrying 4t ihft :byk tob62+rw ;n/pg 0h24kql5.0 A when it is placed in a magnetic field of 0.020 T? The wire makes an0f;hp/g2w 24 nrtttilq6bhko+ yk b:4 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 iv xijg;c*x* 1is in a magnetic field of 0.10 T. What minim*gjx*i1v i ;cxum 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 ma/ kdv4q1;oy)m8 ; w8gwjiiwlf(p ;d pagnitude ow fw i 8)kg liwdd4;ovp/p18j;;(ymq af the 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 speedq y 2t9n,uhc8d 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 sp6e: w9uy)vditeed 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 sp7vzlbfig:yc um ; * -x7aexx);eed $4.0 \times 10^5 \; m/s$ 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 speedyn hu6: gpu +2l+ze*-kj/rrte 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 speed ofzpd3 s;p-er 2w $8.0 \times 10^6 \; m/s$ 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 oxe4kug+c fhz2. 4 qw:zf $3.0 \times 10^6 \; m/s$ 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 cu89m/p3/vnhd t 1ywpftrrent of 25 A. What is the magnitude of the magne wd p/9tm1p3h8y/fvt ntic field at a distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what mag/e6 ,t69-zm f1l jo*yqx 1a9wko lxxybnetic field at the ground, 10 m awal/kxzmxjf,lxatq1w19y 6 9* o6o-eby y?

  How much current mustcnxwq7j*,l n; dqw(4 m flow 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 ,8e(xodwjbas 1x :5 tn3b-dx iA is the magnitude of the magnetic field due to the wire equal to the strength of thee8 b-1da(5wx:tj dbox 3sn, ix Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wiresi-60kq kmq hm9 carry 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 point that is 20 cm from one wire and 60 cm from the q6kmk9 -qm0h iother?

  Two long parallel wires carry currents of 20 A and 5.0 A in opx *h+,iyi 75jzfjf// 1 bsismzposite directions. The wires are separated by 0.20yzb+/ i*isji 7mzff/ sxh15 j, m. What is the magnetic field midway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A inof (gw22t j 2itv.9hyh opposite directions. The wires ar2( 2gty2to9v.jh hwfi e 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 par3) e obs6s)kk. ;cyhypallel to the z-axis, and they pass through the corners of a sq se k3bhysky6;)).p couare 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;ajlmc6w e(s7 currents of 5.0 A and 8.0 A in the opposite direction. Tleca s6 7mj;w(he wires are separated by 0.30 m. Find the magnetic force per unit length between the two wires.

  What is the magnetic field at thevf*mb10. j ryr center of a circular loop of wire of radius 4.0 cm when a cuybm*r0jfr 1v.rrent of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with u5cj - 5)jt3)hisykhb5000 turns of wire. What magnetic field is produced at the center of the stc5jy5hh 3k)bj u -s)iolenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carries a cukxp 4al20o f8* szi6 as/z6tjkrrent of 4.0 A. What strength of magnetic field will it 8s0*jt/f izzao sk6kx24a6 plhave at its center?

  How much current mustelbvdjbz tph0/r*mb3x4g+ p(t l1,v ; pass through a 400 turn coil 4.0 cm long to generate a 1.0-T magnetic fiel 3 g 4 tphmt(xl*lv,de;prb 1vb+0zj/bd at the center?

  How many turns should a 10-cm long solenoid have if it b41 d jpbg1xr;j01hci is to generate a $1.5 \times 10^{-3} \; T$ magnetic field on 1.0 A of current?

  What is the magnetic momeza4/57 5xak7pdatm(8x fe sb xnt of a rectangular loop of 120 turns that carries 6.0 A if its dimensions are 4.0 cabs/5(7dptz8mfa a xxe4kx 75m x 8.0 cm?

  A circular loop of wire of radius 0.50 m seni-b ,2m ,i74pmzrdis in a uniform magnetic field of 0.30 T. The current bi,m4pn2 zm-7d,esri in 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 crosg6a*ocxh o.v/9qao6k s-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 A is in a magnetic field of qrqqvm48;jqs8l.wq 5t e0nb4 3.5 T. The loop qems5;b8nwq r qqj0. v8tl4q4has 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 radighx1i8iigcuhbs 6h i8i: 9.)xus 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 h)ib 1:8giius 8hxhx6 .i9 icgplane of the loop is parallel to the magnetic field?

  A circular loop of wire of radius 0.50 m is in a uniform magntib-1/chuckt .7zz / p3-bmdietic field of 0.30 T. The current in thei1ttp/3 i bh.-7z/zduck b cm- loop is 2.0 A. What is the magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop of 6y ynhyv t3kw*. tw))yarea $0.25 \; m^{2}$ 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-ch1 akubu1u:*u warged 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 vwl7tay bv98:;.:ub rx5m f0thudqa +lelocity $6.9 \times 10^6 \; m/s$ 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 fq;-ol9-m jraq0ajm g 4v71gminto a magnetic field of 0.040 T. Whatm vlqa4-17-r;g qm9jg fmoj a0 is the radius of the proton's resulting orbit?

  A proton is accelerated from rest through k2dn/nu,j.tf500 V. It enters a magnetic field of 0.30 T oriented perpen,nd f/.tjkun2dicular to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is acceler ftopv6as*k: 0ated through a potential difference of 10 kV before entering a velocity selek:va op0s6t*fctor. 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 particles are to be undeflected?