If the north poles ofh8:h)w+ , 0d0bw6vqrcbib omp two bar magnets are brought close to each other, the magnetsi h:0ohq),vbc b6br 0wwp8+dm will

  If the south pole of one bar magnet is brought*z+zm7-lb)-ahm9k+ uovn7hhi 3 bua v near the north pole of a second bar magnet, the two magnets wil3*-+9bz u+ )amo 7mhulvhb7na k vz-hil

  If a bar magnet is divided into two equal piecey*6 8/mjro szi 2kxj ,w:0pf xm*j9pajs,

  The Earth's geographic North Pole is magnetically n-7s4yq0g gt cmow r20a

  The south pole of a magnet pointf9 guc97l )(oohiqzqyr4k /j j 1srpt, y0wp;1s toward the Earth's

  An electric current protmso,;scf( i;n xw1h(duces

  Which of the following is in 1 uk5esi doa3:1t8scorrect?

  A vertical wire carries a current straight down. To the east of this wire, jk54j)hq. xxr/wc ; w ,qvn8vmthe magneti/;x,r5q. w8xvvmjh kw)4n qjcc field points

  A horizontal wire carries a current straight toward yrb8uda :mkxu d+zy1 37ou. From your point of view, the magnetic field8myd+3d a:x r7zu1kub caused by this current

  A current carrying loop of wire lies flat o :sdvkv303. +wnnoydi:k c 7nfn 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, outsiyn+33oi .v :vcd:f7n 0skdnwk de the loop? The magnetic field

  A current carrying circular loop of l.mb(bx 3a l c77emnr;wire lies flat on a table top. When viewed from above, the current moves around the loop in a counterclockwise sense. Wh mc7lem7.rx;nbab(l 3at is the direction of the magnetic field caused by this current, inside the loop? The magnetic field

  The SI unit of magne *q3g xdxv46aytic field is the

  1 T is equivalent topzhm5 hq*)smpu 23 k2a1qji5a

  The direction of the force on a i0u1p+d2)2 d-hza zibz.a d.5moxmu fcurrent-carrying wire in a magnetic field is described by which of the following-2z)zm x ib.df2auaum+5h0do.dzp1 i?

  The force on a current-carryip 4h+: xlazkhc8d6s4q4z ,rg0)etzxing wire in a magnetic field is the strongest when

  The force on a current-carrying wire in a magnetic field is equal to z*x8pzhn k: ix4ero when

  A vertical wire carries a current straightnq+*e.h+h u up up in a region where the magnetic field vector points due north. What is the direction of the resulting fohn+*quh+p .u erce on this current?

  A charged particle moves and experiences no magnetic force. From thiqqo+zuuicat w a7 o12b.s 4h23s we can conclude that.s4ocu ui w1+7 3hoqbzta2q2a

  A charged particle moves with a constant fdehpa /r fbqrc433 0dl7gmaop::z8 tc5+nc/speed through a region where a uniform magnetic field is present. If the magnetic field points straight upward, the r cfdmz3: 3 l4o/7 pcatn:gr/f+q e d50ba8chpmagnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a coq4pzhjc.1 3 k .)btcuanstant magnetic field. The magnetic force on this partitb ca1 p 3jqc4k.h.u)zcle

  A charged particle is injected into a uniform magnetic58f sb6xf mum69gut)r field such that its velocity vector9)s8g6 fu5mbx 6u mtfr is perpendicular to the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in a cirtatv /p;s v.6bkq3 -xjcular path in a uniform magnetic fiel/t;sbvx 6pjqvt ak.-3d. If the particle had been traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e travels in a circular p1yyvr*g w- s yyc1dptx63 5u2nath in a uniform magnetic field. If instead the particle carried a charge of +2e, theyny*yx1wt5 rvs1 y-c2gp3 d 6u radius of the circular path would have been

  At a particular instanx.)g,i+ tnwao 9.yhvvs6sd; wt, an electron moves eastward at speed V in a uniform magnetic field that is direw.ys,. 6anwio ;+sx th gvvd9)cted straight downward. The magnetic force that acts on it is

  An electron has an initial velocity to the south but is observed to curve upws7dv.i*qpiu ,l l 7m u(:viso1ard as the result of v7 ul,*iupvd qi.7:l(im 1o ssa magnetic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a renoh,gi)y2 yi8gion where there is a uniform magnetic field in ty28g,hnyo )ii he +y direction. What is the direction of the magnetic force on the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced by a longdcxu09 o4h iyso2z2;u h :b6dm straight current-carrying wire is

  At double the distance from a long current-carrying wire, the strength ofyoh;a e;jqf,q43-q e ljxp.6w the magnetic field produced by that wire . -6 jx;jqq4e apefhl,qwyo3; decreases to

  Two long parallel wires placed side-by-side *0 . xjt2wo.xu m jywmb-3o1uyon a horizontal table carry identical size currents in opposite directions. The wire 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 beyom 2w-x3 10 .*. ujymwtuxobjtween the two wires

  Two long parallel wires placed side.iu 3ox4gmof/3r9q *zkk)y7 gfheey4 .y5zfe-by-side on a horizontal table carry identical current straight toward you. From your point of view, the magnetic field at the point exactly between the two wirese/4emz e*ogyff fuz4)kh593 iy. qr3.xgy ok7

  Two long parallel wires t a rdfl3pbw141g,la7carry 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 the new force between thewpaf 7 r4 3tda11lgl,b two wires?

  A long straight wire cdhj37tk h6da )c6qud 2arries current toward the east. A proton moves toward the e7h d akjut3)6dq2cd6 hast alongside and 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 current toward the p xrwo h20y2d*;sy74 lwbh5tw/y:d na bottom of the page. What is the direction of the ma*hdy h dypt 7o s2rl5/yawwbw:;24n x0gnetic 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 hor4 2w u:hqz9kbgizontal table. If the wires carry current in the same w uqg9bz:kh 42direction,

  Two long parallel wires are placed su+llpzte, i1 0mlk,p9h,vq ivl +i 8a+ide-by-side on a horizontal table. If the wirai 8tl vu+pqvmhpl0e9,+,ii+ ,1kz lles carry current in opposite directions,

  Consider two current-carrying circular loops. Botlm- e/7g6(dmj9j9bssdc+ebw h 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 center of the smaller loop, the magnetic field at the center of the largews6+-b9/j9 lbm7( m dcsgejder loop is

  Consider two current-carrying circular loops. Both are made from one sp1,gm7w yie:lnb +x5btrand of wire and both carry the same current, but one has twice the radius of the other. Compared to the magnetic moment of the small :x ebgnip,wyb+571mler loop, the magnetic moment of the larger loop is

  The maximum torque on a cuyizv+eb 19t,p rrent carrying loop occurs when the angle between the loop's magnetic moment and the magvibz 1+ ty9pe,netic field vector is

  When placed askew in a magnetic field, a current carrying loop thwzp*/*+ 0o+8b zwn7 ali,xtwzr)wjto at is free to rotate in a)+ aizl8/ ,+wxznj 0zb*wrop*tt7 wwony direction will experience a torque until its magnetic moment vector

  What fundamental fact underlies the operation of essentially all electric4t cy b/uvej jc-fb;67 motors?bfetyvcjc6j47b ;u /-

  A circular wire loop lies in a horizo rv-s3.t+f yrv3lh.hj 17gpwlntal 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. Whic+7rt-w. jvl pvlf1hr .g3hy 3sh 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 acpqi, .u*rp4 y particle of mass m and charge q is accelerated through a potential diffeic*q ury.4,p prence 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 mass of the particle in terms of B, q, V, and R.

  A velocity selector cons .hr xoy8ig159hgx v6l fha4:dists 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 velihyh r.ovf945a6 h:g1xxg8dlocity 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 north. What direction should the electric field point?

  A 2.0-m wire carrying a cui 2vbz,9puvf7 rrent of 0.60 A is oriented parallel to a uniform magnetic field ov7ziuvb9, 2p ff
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in di3m (19nk9f -g9cgfvb ya3kpa 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 carryx 8l/m6t k2iao9ok 2xbing 5.0 A when it is placed in a magnetic field of 0.020 T? k/m ok9txl 86 x2ib2oa 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 and is in a magnetih * rr/jf/,n2q9usdbzc field of 0.10 T. Whatu/rhz*2 f /s qjr,9bnd minimum 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 maz d-zn9pae(v 9xy6t2mgnetic field of 0.20 T. What is the magnit mepzn9zy2-(ad9xv t6ude of 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 witeaahp4k,os9t.kf0m 3 h 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 )vsga 9db.auyth6 zq)tzhd-83 s-ac;a speed 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 speha 4i z;es9 w* yr*6pss2qcys5ed $4.0 \times 10^5 \; m/s$ 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 sp1o .3if(,arqw l2kmb; j3v7 l:smmimheed 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 witha02b03s r u:m45wdv z uzwz,ve 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 speedvuxkw: p .y9e: 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 wire carries a current of p 0uv--bcbqvg .9e6aw25 A. What is the magnitude of the magnetic field at a distanc-bgpvb-.cq av 9weu60e of 0.15 m from the wire?

  A high power line carrying 1000 A generatni3ghog,wc5- es what magnetic field at the ground, 10c,oiw3n5 - ghg m away?

  How much current must flow foosp(+phn s 05pr $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from0 ed3 rgi iddb-/1rm7m a long straight wire carrying a current of 5.0 A is the magnitude of the magnetic field due to the wire equal to the strength of the Earth's ma ermd7id0r /3g-1d mbignetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents of 10 A in ly/a 0o)i8zc;m9kml jopposite directions. They are separated by 40 cm. What is the magnetkz;a 9li)m0yj c8oml /ic 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 opxhc.2) txf+mp-pp4v40a m8 dvzgevr 2 posite directions. The wirv eh 2244)p 0vfp+-pzarxcmd.8tvgxm es are separated by 0.20 m. What is the magnetic field midway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A i1+1rjn/ou:(j9 ppnhzd tg.h rn opposite directions. The wires are separated by 0.20 m. At whatt.11 :g r( 9+hh/njunpdozrp j point between the two wires are the contributions from the two wires the same?

  Four long parallel wire ixyd (ttu8sz.7uk;6qs each carry 2.0 A in the same 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 the wires experience due to the othu68.y (t;q7zxkds ituer wires?

  Two long parallel wires carry currents of zuwa0f( o37kp5.0 A and 8.0 A in the opposite direction. The wir(wko a3uzp 07fes are separated by 0.30 m. Find the magnetic force per unit length between the two wires.

  What is the magnetic field at the -ptqn;;hi) shgd; 8p1yr. xzx center of a circular loop of wire of radius 4.0 cm when a current of 2.0 A x8)g;p;si.d-q1;px ryh nth zflows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of w k5n1j6i aavi,c) l+u v/bx 6uuc4amh2ire. What magnetic field is produced at the center of a6)avn /5 ,kc4umu jbiclv +2 uh61xiathe solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carries a current of 4.0 A. Whazttj j;8nqy ld m/):o6ijwfw34ww5i+ t strength of magnetic field will it have a/;jnt4 wdq lwwyzwmj3i 6j8)t : o+fi5t its center?

  How much current must pass through a 400 turn cvgjjd okjei-)lm 8 . xa5;1+qtoil 4.0 cm long to generate a 1.0-T magnetic field atjx.);i8 5t+oe1 j ag-lqkmjdv the center?

  How many turns should a 10-cm long solenoid have if it is t r -pgiahndu0*:,i, gs7negrytx( a/,o generate a $1.5 \times 10^{-3} \; T$ magnetic field on 1.0 A of current?

  What is the magnetic moment of a rectanga-2/+ytonn p nular loop of 120 turns that carries 6.0 A if its dimensions are 4.0 cm x-y+nn p2 onat/ 8.0 cm?

  A circular loop of w2364ubcc, y4d e)xcq lf(v bglire 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 magnetic torque when the plane ol3bf)cu(l veqc 2yc ,4b4d6xgf the loop is perpendicular to the magnetic field?

  A circular loop of w, dn*x n1;i0lzuunic4ire 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 A is in a magneticu67b 8;z3 ;;vcvjgynf qtqmo) field of 3.5 T. The loop has anoyj)qvncbt7qv3; 8zm f;gu6; 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 radius 0.50 m is in a uniform i8n37siufy. rmagnetic field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when t87y3u sirifn.he plane of the loop is parallel to the magnetic field?

  A circular loop of wire o5ui6f*qq(ptdl *gov :q cws*8f radius 0.50 m is in a uniform magnetic field of 0.30 T. The current*pwt i*cogqf:65uvq(d8sl*q in the 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 ofwf8 q 1vriw8v44tqw0n area $0.25 \; m^{2}$ 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 (chw8 62 x-9 (zmr r,fbptxzaxh6uarge 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 with1l a-nwtl c r wkxb20. az4n2t;i.;cmo-cpm0a 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 potenti ypmfc6 8b8o8qal of 1.0 kV and then moves into a magnetic field of 0.040 T688opmyfc8 b q. What is the radius of the proton's resulting orbit?

  A proton is accelerated from rest through 500 V. It enters a mag -)j i5 ;hv7fl8v(xl /ykyqrqknetic field of 0.30 T oriented perpendicular to its direction of moti-j r 5hk;y(vflqv8l/x ki)7qyon. Determine the radius of the path it follows.

  A beam of electrons is asghjqx4s0 ; +xfr /u*sh5qe+uccelerated through a potential difference of 10 kV before entering a veloh sss;0+qxqfeu4 + grux */jh5city 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 particles are to be undeflected?