If the north poles of two bar magnets are brought close to each other, the mao(fk8c0a.02 r2n g5yhxcf: hfm :hbxognets willk0 r 5 cgb:2y mohx0nf:fh(fxho2a8 c.

  If the south pole of one bar magnet is brought near the north pole of a second kncwj9.3 mdg njq421kbar magnet, the two jjk dk2n3.1mc gqn4w9magnets will

  If a bar magnet is divided into two nufqgp7cz,opx/c tx( 7+t 6 )eequal pieces,

  The Earth's geographic North Pole is ml e jtpuet55.)7 l-slkagnetically a

  The south pole of a magnet point 7ezu(2q:.fihj vx4uu xr)5u ws toward the Earth's

  An electric current produce) t4w zju kea/qe.1/sis

  Which of the following is correcd e3sxl/0dnk) v vb,u0t?

  A vertical wire carries a current st: tt 8c ztfe+d5r* rkl)s.q,0sum9annraight down. To the east of this wire, the magnetic fierq tusncr 9 )tka,t nm8 +.:dlz5ef0s*ld points

  A horizontal wire carries a r8xjw2ygzw9p x0a:p ;p21u u icurrent straight toward you. From your point of view, the magnetic field causaju2iyx19w:ppzrxwup2; 0 8g ed by this current

  A current carrying loop of wire lies flat on a table top. Wheng.0*wno20 av fnhf,cb 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 the loop? Thv,0fnn2b c.wfg *0 oahe magnetic field

  A current carrying circular loop of wire /+39jtf -tspk z-vcd nd (xf;+/tcyxclies 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 this curzfcpcdxfnksy ;t+--j9tx/3 ( +ctv /d rent, inside the loop? The magnetic field

  The SI unit of magnetic field is ti0/cf df4 og9qhe

  1 T is equivalent tod* xsyq g (u2nu,l. zsi4qz/*j

  The direction of the force on a current-carrying wire in a magnetic field is de;h4lq 0k5tkq5u;x10k gysbnk scbkhxk5kq5 0nsq 0g41k; luy ;tribed by which of the following?

  The force on a current-carrying wire in a magnetic field is the stron .zom;ui ko,9rj.pl/l,wq qh:b, ka )lgest when

  The force on a current-carrying wire in a magnetic field is eqan 6sl.xq4lhs 45ga4( bqp7l uual to zero when

  A vertical wire carries a current straige 73f krv0fnfs (zwe57ht up in a region where the magnetic field vector points due north. What is the dirr7n57vffkwfzes 3 (e0ection of the resulting force on this current?

  A charged particle moves and experiences no magnetic force. Froaoq qwb b4 ebhi g4 4wz 3/rm7f43j;2i2;jtogum this we can conclude thai j72;o;b4b3ta42q4/ 4h bwfejm g3ur oqi zgwt

  A charged particle moves with s vksiiu;jr5bu88ga3 ve:,5oa constant speed through a region where a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting on this pa :v5sku vsj3ieo;i58,bug r8article will be maximum when the particle moves

  A charged particle moves across a constant magnetic field. v.;-162 xrt oduocwi; 0ewbf 9x-rmfeThe magnetic force on tc1 e60i-xr. o 2fb ;mwwtv-9do rexuf;his particle

  A charged particle is injected into a unif bhrs2p)v1x fly8 ob 86s4hs6l1awb8 porm magnetic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring the particle's wb6 8a)6v flby1 h8bs8ws p4xh2rps1lo eight, the particle will

  A charged particle is observed traveling in a circular path in a unifo+favyuho ot( k8p+9iz+w ,5pprm magnetic field. If the particle had been traveling twice as fast, the+zo p5p,(kpow y+fihtvu9+ a8 radius of the circular path would be

  A particle carrying a charge of +e traqx+(dq hpn)j4 ;cno 6evels in a circular path in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of thec;)p6+xn(e o4hnqq d j circular path would have been

  At a particular instant, an electron moves eastward at speed Vz1a hd8h /oz; ux6x,vju(sat2 in a uniform magnet2h;ouvtz1 u x6jszdah8 /(ax, ic field that is directed straight downward. The magnetic force that acts on it is

  An electron has an initial velocity to the south but isf 4 rf tbb7tspvta 18r lu3;ahut1/.p3 observed to curve upward as the res8la1s1atfut 3v t 3t hp/ .;7rbfrbpu4ult of a magnetic field. The direction of the magnetic field is

  An electron moving along the +x axis ent ;z7)l3jnis4 rfts+g uers a region where there is a uniform magnetic field in the +y direction. What is the direction of the magneticjl i fg+rt;n73 s)4zsu force on the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced by a long strailhg5+j tek ue;4/6 kjaght current-carrying wire is

  At double the distance from a long cuzbq8j2c)zf z; rrent-carrying wire, the strength of the magnetic field produced by t8;)b2z z qzfcjhat wire decreases to

  Two long parallel wires placed side-by-side on a horizontal table 6j4zmfv 34 tfxt*15f puf m4njcarry identical size currents in opposite directions. The wire on your right carrjt*64ff jf mfp5z4 mu4xnt3v1ies 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 horizontaowq;8mw3: meb l table carry identical current straight toward you. From your point of view, the magnetic field at the point exaceow38b:mmwq ;tly between the two wires

  Two long parallel wires carry equal currents. Theit 5e, rwa:zs8 magnitude of the force between the wires is F. The current in each wire is now doubled. What is the magnitude of the new force betweenz: ,twasr8 ie5 the two wires?

  A long straight wire carries current toward the east. A proton mov25,m kboq8u3s6 gnmax es toward the east alongside and just south of the wire. What is the direction ofmg2asq,3n6 ub8 x5okm the force on the proton?

  A wire lying in the plane of the page carries a current toward the bottom of fce-7fw*4g* gpv6 pzythe page. What is the direction of the magnetigcyf*pgpv* z we-7f64c 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 t/ 4qr)jku6/ig b/c hdside-by-side on a horizontal table. If the wires carry current in the same qgb/4jkr ic tdu/)h6 /direction,

  Two long parallel wires are placed side-by-side on as ugefoe )7r0; horizontal table. If the wires carry curre0ue er7g;o )sfnt in opposite directions,

  Consider two current-carrying circular loops. Both are made from (k x4r,qdqwq2 one strand of wire and both carry the same current, but one has twice the radius of the other. C,x( 4qwdkqq r2ompared 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-carrying circular loops. Both are made from one strand bo +*7tywin(mfb;ec9 di hk5z, i4a d:mu76xxof wire and both carry the same current, but one has twice the radius of the other. Compared (zwf+4 6bm boxce5amn x7*thid;, d 79iky:ui to the magnetic moment of the smaller loop, the magnetic moment of the larger loop is

  The maximum torque on a current uqac,9o79qn w carrying loop occurs when the angle between the loop's magnetic mo qwuqn99o 7,acment and the magnetic field vector is

  When placed askew in a magnetic field, a current carrying loop that is free tso uk4-jnh8cyf;39p o*i o03 r9be-ygd bvah7 o rotate in any directi3-f;euoans0iho bh g3 y9d4 87-c* vyb p9jorkon will experience a torque until its magnetic moment vector

  What fundamental fact underliw/*nwo2bwyd4.cnh;uh7 tp 1 yes the operation of essentially all electric motors7ch* ow/wd4y tw. y21;u bpnnh?

  A circular wire loop lx2z a*0q 7ukti5uo dlar7k p d7po0h1,ies in a horizontal 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 to lift off of the table because of the torque cau 5,i u kk*qdzu2od l70h77 a0otxa1prpsed by the currents interaction with the magnetic field?

  In a mass spectrometer a pa0j.twodm 6sh:rticle of mass m and charge q is accelerated 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. Derive an expression for the mdm tjhs.0w: 6oass of the particle in terms of B, q, V, and R.

  A velocity selector consists ofk a 31i2 4agcv8uxp1xd 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. aka841i gcvx1ux p32d 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. 3,zyf 2 fuzfs ;hd6pxnf-k-1c60 A is oriented parallel to a uniform magnetic fiepu2 3,dykf f6csf -;z1fnxz-hld of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a direction i4jnhko 7yd9kisvn.fr 9aa94)cnv9. *p pj7qof $30^{\circ}$ 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 ci l(. jjmuij/hin/wut)*6+u straight wire carrying 5.0 A when it is placed in a magnhu.n)muctj+*6 i /j/iil (wu jetic 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 lfnricni6p 08m8d f9/ qong has a mass of 0.050 kg and is in a magnetic field of 0.10 T. What mifqip68n /dr0 f8n9cminimum 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 0.3s:f gz:8vul dq/wqccut m ;l9k2,kf0 20 T. What is the magnitude of the magnetilc,; v gmkwtq:fkuus 9z/q82l df:c03c 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 speo*pq 6,ddnnof 51k.rued 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 spe xfv- we6wauvd* (.5sxed 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 ,tn lxl4 h8nmswj6/aoq0 5ujb ,2eis:$4.0 \times 10^5 \; m/s$ 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 of w 2i8oee9 pl0k/:ewme$8.0 \times 10^6 \; m/s$ 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 speed8szwhg zse*0 q o+6;qd 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 ols*rrz.lq2e e1l ,+c hf $3.0 \times 10^6 \; m/s$ 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 cur49 z/yhv px(rz-tkrf6mb 97u trent of 25 A. What is the magnitude of the magnetic field at a distance of 0.rmbyr(hz 97 tzu xf6vk -4t9/p15 m from the wire?

  A high power line carrying 1000 A generates what magn.dftdzx1 m/0 g0ib,v5wq trw, etic field at the ground, 10 m atdi/ qrb0 ,5fdt0,.wgzm wx1vway?

  How much current must f 67a1 axf(zh.aquvk2c low 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 (lgq22;z8 y esepktm 25adxh +the magnitude of the magnetic field due to the wire equal to the strength of the Earth's magnee8 ty5 a2 x;+2mqh2sklpgze(dtic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents of 10 A in op1m) jvfb3rufldb.nwf7 4qf kd12+cd* posite directions. They are separated by 40 cm. Wnmd3 u2w*+bbr. qffdv)lf7j1 f d4c1khat 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 other?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite directiou mo+ y6)2xksvn- 8pvdns. The wires are separated by 0.20 m. What is the magnetic field midwx8-p sk y6 n)vo2v+dmuay between the two wires?

  Two long parallel wires carry currentsvzvn)xk8k +ei.xq.oy(, xw( a of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 i. +nkvz ax k.(yvq, x()exwo8m. 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 paraljejgfpaa:q27 )a:f u -lel to the z-axis, and they pass through the corners of a square of side 4.0 cm positioned in the x-y plane. Wha : gqfuaaj:fpjea 2-7)t magnetic field does one of the wires experience due to the other wires?

  Two long parallel wires carry currents of 5.0 A and 8.0 A in the.z)z 8oi 2wcvle3: wxe opposite direction. The wires are separated by 0.30 m. Find the magnetic fwl ecie ) 3:wvz8oz.x2orce per unit length between the two wires.

  What is the magnetic field at the center of a circular loop of wire of radius 4)74t*/pbldad;c excl 1wty 9z.0 cm when at e7x)1dc;y* cbpzlw4d9/tla current of 2.0 A flows in the wire?

  A solenoid 20 cm long is woun7-0pbahw dy5qd with 5000 turns of wire. What magnetic field is produced at the center of the bw75d hp ya-q0solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m n:,gac-e2w4.yo+e ojne0 pwzlong and carries a current of 4.0 A. What strength of magnetic field will it have at z,go ewe+njy2o -4 w:p0ce n.aits center?

  How much current must pass through a 400 turn k9-ibj8uyxw;u r9:jc coil 4.0 cm long to generate a 1.0-T ma8yj b9ixk:;uw9 -cruj gnetic field at the center?

  How many turns should a 10-cm long solenoid have if it is to generate aks/z eep j++hg u;j+4g $1.5 \times 10^{-3} \; T$ magnetic field on 1.0 A of current?

  What is the magnetic -57 46vkumi w 2qktcyemoment of a rectangular loop of 120 turns that carries 6.0 Acim-2t6vq7 ye 5k wku4 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;l+ j.te spk8a 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 perpendicular to the magnetic fielept+ajl k. 8;sd?

  A circular loop of wire of3ekmo:cm03ro : d 7v;fyc 1huh 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 curp7 z/f /z9dfnwanq ( ;kzn9y:lrent of 2.0 A is in a magnetic field of 3.5 T. The loop has an area nzpnqzw7f /dln/ a; 9zy(kf:9of $0.12 \; m^{2}$ 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 0.3;pgy qlxi wgk(8ovt7 -dlva, 75.u ej/0 T. The current in the loop is 2.0 A. What da igq/jp x;v 857lt,ku-gole.wv (y7 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 5g, uczud;cv 3a uniform magnetic field of 0.30 T. The current in the loop c3ucd5 z;vu,gis 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 ar3dno l06e h1bqea $0.25 \; m^{2}$ 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 hmz*8j-p*0 2qauh6 x9 rzijtlparticle (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 velobr6y(pruw.1i* 2t fi scity $6.9 \times 10^6 \; m/s$ 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 potentia;nfpu4a sas(; l of 1.0 kV and then moves into a magnetic field of 0.040 T. What is thepnaf4a(s ;u ;s radius of the proton's resulting orbit?

  A proton is accelerated from rest through 500 V. It enterzd-bpe6k ,k l3s a magnetic field of 0.30 T oriented perpendicular to zb6kd,l epk3-its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accey i ehpn ;c1ywcp9/+3ylerated through a potential difference of 10 kV before entering a velocity selector. If the B-field of the velocity selector hasyh3ec;wy9p/cyip 1 n + a value of 0.010 T, what value of the E-field is required if the particles are to be undeflected?