If the north poles of two bar magnets are brought clo) xd oh3c ,ycu.)ssc2+mcn:r acyr:t/se to each other, the magne ccha+nyu:ccd:os. )32 trx/mcr s ,y)ts will

  If the south pole of one bar magnet is brought nea. 40c v3aqvgdcr the north pole of a second bar magv4.dvqc0 gc3anet, the two magnets will

  If a bar magnet is divided into t,eh,. k9( o xgywpjk1wwo equal pieces,

  The Earth's geographic North Pole is magnew: crt9xjo n/j 3,;tlutically a

  The south pole of a magnet points toward the an(6cvk l37nb Earth's

  An electric current prod,yh.qx 3py h 8fsp,ie.uces

  Which of the following is correm+dk )( *ishqw,g4qc oct?

  A vertical wire carries a current straight down. To the east of thrsbakct+4)yjd( d49y nk n3e cuqx(j+-.7 erxis wire, the magnetic fieldu9a 4(tj7b 4re dy x(xcerdj+)y scn -kk+nq3. points

  A horizontal wire carries a currh9tce cm:p,n8 t rzhua)0z; qhh2:mk/ent straight toward you. From your point of view, the magnetic field ckrha:p;qn,teh:h)uhc zz 92 0 tm/c8maused by this current

  A current carrying loop of wire li2toche umg(40xrrc- x..*g p aes flat on a table top. When viewed from above, the current moves around(4.hmc*r2t og .xua-xcpe0g r 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 circular loop of wire lies flat on a tabl :p,-tr,jpikr b6*eet,v0zvt e top. When viewed from above, the current moves around the loop in a c revp j6tr: tb-v,*tik,,p0z eounterclockwise 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 is g-rl*38;6.pdlo eon4ww t l(,es* p vh n3urodthe

  1 T is equivalent toc u lni0dc +mjvi7+9usag-0*u

  The direction of the force on a current-carrying wibpuk+q8 n(;5nbq( m6 umqnf o1re in a magnetic field is described by which of tkquqn8puq 1(b +6 om(fbnnm;5he following?

  The force on a current-carrying wire in a magnetic field is the stron9yjlgodvv 4ik34)z-.y2x ljkgest when

  The force on a currekosi iek27319 ckozh4 nt-carrying wire in a magnetic field is equal to zero when

  A vertical wire carries a curr4m xpz8w.vp m;s2 aypz/24jncent straight up in a region where the magnetic field vector points due north. Wham8w /ps;.azpx j42 2 yvcpmn4zt is the direction of the resulting force on this current?

  A charged particle moves and expes *5xphqo4+gdf5 0krnriences no magnetic force. From this we can conc4h*q5 k fdo n05xsg+rplude that

  A charged particle moves with a constant speed throts2s o677pm/;b n hqkyugh a region where a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting on this particle will be maximum when k bn 7/p;7th6syo2s mqthe particle moves

  A charged particle moves aj2y+af8 bjj (2ay9ef gcross a constant magnetic field. The magnetic force on thisjy29(fb +j y8afgje2a particle

  A charged particle is injected into a uniform magnetic field suryr lff,;f vv,c;fli-yh 2t49*exrw. ch that its velocity vector is perpendicular to tvlv9 -.w*2f,cyf;ir,f; hrfly t xe4rhe magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed;x 9 oxcr3co1:h85ybu fngy5k traveling in a circular path in a uniform magnetic field. If the particle had been traveling twice as fast,:;u r 58fygcoxh5 9bokxn 1cy3 the radius of the circular path would be

  A particle carrying a c6 lmuywjez94:o0g+v c harge of +e travels in a circular path in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of:l w4eguovz0 96y+mcj the circular path would have been

  At a particular instant, an electron moves eastward -5ju(0n)kly 4fl ooygat speed V in a uniform magnetic field that is directed straight downy(5-ou y )4ofnkll0 jgward. The magnetic force that acts on it is

  An electron has an initial velocity to the south but is observed to curve j f4 6avbl1wd4e 3ja;fupward as the result of a magnetic field. The d3eaj; 4flb 4j1wfvad6irection of the magnetic field is

  An electron moving alogmzx/lf e-7lu(5-k4 x egm(o : f5)n- frathlkng 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 electron? (+x to right, +y up, and +z out of the pal)(aet noklex5- m: 4mu7/-5(-ffrh g glxfk zge.)

  The magnetic field produced by a long straight currenth5nnj726n)ml )dumhc w a/ 0jm-carrying wire is

  At double the distance from a long curuje+n e4jqgr:if(* wn . toua-3 3dxm7rent-carrying wire, the strength of the magnetic field produced by thatxruw .7qo-fje ut g*j( imn:4n33ae +d wire decreases to

  Two long parallel wires placed side-by-side on a horizo 6.tu5-bbmv*9z jj vwdntal table carry identical size currents in opposite directions. The wire on your right carries current toward you, and the wire on your left carrie .bvv t-uz65b 9*mdjjws 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 hor zt )kwf.7msd8d-)korizontal table carry identical current straight toward you. From your point of view, thtk.)d-os8wd)rf 7z m ke magnetic field at the point exactly between the two wires

  Two long parallel wirfjediwo r1o/m(( l ;fxid.*n4es carry equal currents. The magnitude of the force between the wires is F. The current in each wire is now doubled. What is the magnitude of thed i(nw4 1oxd fmfijlo.;(r/*e new force between the two wires?

  A long straight wire carries currentqd( tjz,6ydj4-zif 9n toward the east. A proton moves toward the east alongside a6jzn4qd (yd-i,fj t9znd just south of the wire. What is the direction of the force on the proton?

  A wire lying in the plane of the page carries a h*-v jdzkfpdhxf, 08;current toward the bottom of the page. What is the direction o*-fj8fd;d xh h v0,zkpf 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 horizontal table. If th+qm 4u9hre8 7 fb.*wb 4hhseo4 wkf,kke wires carry cu k hwfb u heokfh4qe8*b9rs7k 44+,mw.rrent in the same direction,

  Two long parallel wires are placed side-by rb1foc3 bdgwqbi f)1-cc:.3g -side on a horizontal table. If the wires carry .3io1bcccqf3 bwgb-gfr 1:) dcurrent in opposite directions,

  Consider two current-carrying circular loops. Both are made from one strand ofd.u(jvit*b v; j jnjc jw7k,p-4 vi30f wire and both carry the same current, but one has twice the radius of the other..j vn0 v c,j bvi*j3pjt(ki74-f ;wujd Compared 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 ofvuuy5(o0qhm-zw h)( u wire and both carry the same current, but one has twice the radius of the other. z-u wm)0hovy( 5huqu( Compared 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 when the angle betweb/fvjm-g qdow6;o +x:en the loop's magnetic moment and the magnetic fieljo ;bq-v: mwfo6+g/xdd vector is

  When placed askew in a magnetic field, a 5 cuk6t3e6 *vqpirzu1 current carrying loop that is free to rotate in any direction will experience a torque until its mariqvu1 utc5*636ekzp gnetic moment vector

  What fundamental fact underlies the operation of essentialx:x 7f)8jfwc kly all electric motors?c:fk78w ) xfxj

  A circular wire loop lies in a horizontal plane on a table and carries curre . ,f3v tbakvy3r(hl9u6xci ;azn.kx:nt 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 caused by the currents interaction witxvu hbl( 9,ia v.k.:xrkn;36 ty3zafch the magnetic field?

  In a mass spectrometer a xw d.*8nqs(mtrv x+3wparticle 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. T8(*3s m.+ rxwqxtdwv nhe 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 charged particle passing throuns /8a3c wq s,4fh1yqagh 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 field is directed to the noraqq1syas/ cn,wf43 8 hth. What direction should the electric field point?

  A 2.0-m wire carrying a current of 0.60 A is orientedyf 3yjb b7h) oun,)yqk ;f2-br parallel to a uniform magnetic fie );- byk,fqjonh3yrfub2)b7 yld of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A id4wc a34w-ndbb ( )klkn 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 5.0 z:4l zleepr0e axdw4 4 gt -grh3mw94:A when it is placed in zmleh4pt4w:dw0e 4z:4a g9 -grexrl3a magnetic 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 long has a mass of 0.050 kg 972ibwvsp ozy * egw)*9e.ytfand is in a magnetic field of 0.10 T. What minimum current in the rod is ne2 *wyo99wbzv)e*setypgf7 i. eded in order for the magnetic force to cancel the weight of the rod?

  A stationary proton is in a uniform magnetic fielcjqb gb4b-5orp- .3rzd of 0.20 T. What is the magnitude of the magnetp3b-.c-zrb bjoqr5g4 ic 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 0,iysy/kkhn- 3m bqo ii v)m6,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 speew/ik/41m1v w b 9ffjhmd 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 nort;;2 mj xsl1rm(pmz6aiw 4)u:um qxk9 bdzl6/nh with speed $4.0 \times 10^5 \; m/s$ 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 sy 6zd7kj4fn5icc 9d/apeed 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 of; dp +x vpp1hmix+na, v63wf xpdi-+k) $8.0 \times 10^6 \; m/s$ 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 maiu;r7;kh d 8xxh9(jof $3.0 \times 10^6 \; m/s$ 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 curren3d-v/xzd y/q v8 :mbeut of 25 A. What is the magnitude of the magnetic field at a di xdv/:d8 /-zvbmy qe3ustance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magneticz7m,9 bsq,nmsp i 4.)p) gxbzn field at the ground, 10 m away? sbxnzb .s9)7,ming)qp4zm,p

  How much current must flow for b3rik88/:l ibiagq d(ol 4 1b5bp cy+5)qd yhl$1.0 \times 10^{-3} \; T$ 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-ma-ixrc ku5oebf3, 2/xhq ;fzf*t5 f the magnitude ofk2,etz- 35ufxffa;r */ b ho -cq5xfim the magnetic field due to the wire equal to the strength 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 directions. Tqc8n) 5h j6ttt;nz t+lhey are separated by 40 cm. What is the magnetic field in the plane ofz q hc+nt j58;n)tlt6t 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 i97d2b- w9p i2eh ceoxj3fli8 in opposite directions. The wires are separated by 0.20 m. What is the magnetic field midway2w9cxjifl b 8o eei-93h7pid2 between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposgb63-jtmjvf eu6b 5p)ite directions. The wires are separated by 0.20 m. At what point between the tw5bmf3e jv)t66up g-bjo wires are the contributions from the two wires the same?

  Four long parallel wires each carry 2.0 A in the sy.1( dfwinuq/ ame direction. They are parallel to the z-axis, and they pass through the corners of a square of side iq1d(nfu w/y.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 curgd:n4t6(ku hor :2l krrents of 5.0 A and 8.0 A in the opposite direction. The wires are separated by 0.30 m. Fin6:2ontkh4r rgk:d( u ld the magnetic force per unit length between the two wires.

  What is the magnetic field at the center of a circular loop of wire of rady )(sj.v2zy 9ob0 foouius 4.0 cm when a curruoyo( 0fvj 9o.s b2y)zent of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. What magnetic fiel ) k8y3k9h- rywyl/aczd is produced at the center of the solenoid when a current of 10 A3h cry/kwyy9 za)k8 l- flows?

  A solenoid with 500 turns is 0.10 m longmlij+ffa ()u i6o *kx: and carries a current of 4.0 A. What strength of magnetic field wiik ao +6:u*fxm( fil)jll it have at its center?

  How much current must pass through a 400 turn coil 4.0 cm long toad2raag*u)*fo f02 nm tft j6( generate a 1.0-T magnetic field at the a (mf2 arfuf *n6 )g2t*0tojdacenter?

  How many turns should a 10-cm long solenoid hawz a 2k;qja:1ud/ sj5bve if it is to generate a $1.5 \times 10^{-3} \; T$ magnetic field on 1.0 A of current?

  What is the magnetic mjr//jn3( puuoo oy4q 3oment of a rectangular loop of 120 turns that carries 6.0 A if its dimensions are 4.0 cm x 8.0(op/ 4r3qn/j jyouou3 cm?

  A circular loop of wire of radius 0.50 m is in a 9safz*8cerwa73e mx /uniform magnetic field of 0.30 T. T 9r8xa3 /7*f smeazecwhe current 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 cr2 ( i3 pwk0,l6hoyftfcq;u .bxs.yy:y5kk*kposs-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 fipy bo4 t/u8o .en*ryq2eld of 3.5 T. The loop has an are epynbo8u4qo/* t y2.ra 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 d-y)e(a8/sfw hwe , dh0.50 m is in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. What is th8 y,(ae)-w/wh hdesd fe 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 a uniform magnetic field of + 6if(qdhizukhfjry 7 p. re-.14nf ,kl.gt2b0.30 T. The current in the loop is 2.0 A. What is the magnetic t. q6 jiunyd+rrz .b1h2i4kfl,p(7f.-fktehgorque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop of arenarsfwkm/as8,jb ri 055/ ts* a $0.25 \; m^{2}$ 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 (charge e) has a speed 5qb2 bj43nyau 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 ion245 thg5qkoe g with velocity $6.9 \times 10^6 \; m/s$ 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 ov,7cvzpk, u dlv 8.*gand then moves into a magnetic field of 0.040 T. What is tpd78 vk,.l z,ucvgov*he radius of the proton's resulting orbit?

  A proton is accelerated from rest throcq;j acd7s q y*1zxp :irr-69pugh 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Determine the radius of the path iir*z7;9pqdca :-sq c1r6yj xpt follows.

  A beam of electrons is accelerated through a potential r:xo2)b hs6e7ac a,g+ jchnp0difference of 10 kV before entering a velocity selector. If the B- 7o6cc)rse hngxp0+:,a2ahjbfield 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?