If the north poles of two bar magnets are brought close tonoaq94 .5hswn each other, the magnets wil .9sanh4oq5nw l

  If the south pole of one bar magnet is brought near (6uu9ubnxb l 5q5(rzz the north pole of a second bar mag9z65b5nurz(qu bxl (unet, the two magnets will

  If a bar magnet is divid: oynq8a s8mw1ed into two equal pieces,

  The Earth's geographih sfa;jw/;n973kfd6h l ( pekac North Pole is magnetically a

  The south pole of a magnet points.g95c 2am,t + x7scjiwba/lqf toward the Earth's

  An electric current producewmvudy;+z7e g5y0h/7.hsai8 c o wj +bs

  Which of the following is co 9rjadv2b81 p klxmc;f (,.zsxrrect?

  A vertical wire carries a current straight down. To the east of this wire,,c.)iw+swcvscw h *i- the magnetic field poinw- w w +)ccs.h*csiiv,ts

  A horizontal wire carries a current straight toward you. 7dn i.jlg f,5lFrom your point of view, the maglfdg7 .ij,5 nlnetic field caused by this current

  A current carrying loop of wire lies flat on a table trz *)wxi9g -gf/i 7xncop. When viewed from above, the current moves around the loop f g*9) z7-crignx/wi xin 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 table top. When viewenc 08 hq/ b mxe9c:it61fb7bsbkb; t5wd from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic field cau9w tn:5b6bb1e;sbc8/hbq tk0m7 cix fsed by this current, inside the loop? The magnetic field

  The SI unit of magnetic field is tm .a/2l+ hbne/vg 1iskhe

  1 T is equivalent tolzp4xpzjyk *(1;im7 x

  The direction of the force 8g fnm3q4f3zyon a current-carrying wire in a magnetic field is described b3z34gffn m8 qyy which of the following?

  The force on a current-carrying wire in a magnetic field is the stronf)ipi((wt3p v1 / vo8 kfa oirzb-c8y1gest when

  The force on a current-carrying wire in a magnetic fiez8pomc +kaet xx+3 o-j r(9q;vld is equal to zero when

  A vertical wire carries a current straight up in a region where the magnct+ ail.m,.(sawbaltfyrp( : j) bl84etic field vector points due north. What is tb,c:4 (blma +.it.tw) ( a8yls ajrflphe direction of the resulting force on this current?

  A charged particle moves and experiences ne ;d2j d9/nvuro magnetic force. From this we can concln vd;dj2r/9eu ude that

  A charged particle moves with a cons4wfu+qy w2n(itant speed through a region where a uniform magnetic field is present. w2 (ufq4w+ niyIf the magnetic field points straight upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves adi5+ /n68ohfr1 fuuvq cross a constant magnetic field. The magnetic force on thi+n i vuurho f/1d568fqs particle

  A charged particle is injected into a uniform magnetic field suchid,m5b5iq9h 6r5l m al that its velocity vector is perpendicular to the magnetic field vector. Ignoring the particle's we l5mr5daq6mh i,b 9i5light, the particle will

  A charged particle is observed traveosuffdj8h3)jtx4p 3- ling in a circular path in a uniform magnetic field. If the particle had been travel-hsu 4jf 3d t3xp8)jfoing twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e travels in a circular path*q0og 6yd8zq n in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of the circular path woul0z*ndyqo8q 6 gd have been

  At a particular instant, an e; n,eovz96u tzlectron moves eastward at speed V in a uniform magnetic field tha v,t;6z 9uzeont is directed straight downward. The magnetic force that acts on it is

  An electron has an initial velocity to the south but is observed ssg 3( nm(5kgtur 97i2uradz oe p4+8yto curve upward as the r7( 9m3ryiuzt 5suorg8 kpng4 es+ d2a(esult of a magnetic field. The direction of the magnetic field is

  An electron moving along the +x axiss73gkgk /t.uk*ir+ +a+ mziu vu n)a.b 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 pan.kv urk.i37*)g/kt++bzsaauu i + gmge.)

  The magnetic field producecgl6z7p 29n/ 0lghujrd by a long straight current-carrying wire is

  At double the distance from a longz mw9 z,lvfho 8qug7-) current-carrying wire, the strength of the magnetic field produced by that wire decr 8lz mhqz,)g79fvo-wueases to

  Two long parallel wiresy6rcke.ii 3zgu 09nlp:)na,q placed side-by-side on 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 between the twoclip:g.a uqyi09k, ) nn6z e3r wires

  Two long parallel wires placed side-by-side on a horizontal table carry bi98rf l0vlf nd+8+z p5ghfg;identical current straight toward you. From your point of view, the magnetic field at the point exactly between the two wi958f+lg vp+ i;0fbl drf zgh8nres

  Two long parallel wires carry equal currents. The magnyedt (3d6 d)b4j y5iowitude of the force between the wires is F. The current in each wire is now doubled. What is the magnitude of the new force betweewdt(dd yj 6iy34)o5eb n the two wires?

  A long straight wire carries current toward tkj d z15knm2aztz.t :8he east. A proton moves toward the east alongside and just south of ttkd t.ja8nz5kzz12 :mhe wire. What is the direction of the force on the proton?

  A wire lying in the plane of the page carries a current toward theh ez9v o /n*.j 2rr*q)4xhmocl 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 plane of the page, from rhcz.ro ne/oh *4x*jv 9mql2) your right?

  Two long parallel wires are placed side-by-side on a horizontal table. If thev m8lpjcpy7zv7yj . .((n4wq uh.azb7 wires carry curjnq yyvulbz7mppzjw 7 .v 8.(4 (7.charent in the same direction,

  Two long parallel wires ari 5dm7jv7g/ rblg-9fae placed side-by-side on a horizontal table. If the wires carry curlb5gdifajr7- 7mv/g9 rent in opposite directions,

  Consider two current-carryik npg.g(nl0f.g5ptv mv/,:m xng 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 field at the c/x n f.gpk5lm:,m g.gtpn(v v0enter of the smaller loop, the magnetic field at the center of the larger loop is

  Consider two current-c+ m2.qksoe(surae 2+ rarrying 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 magnetics2em2rue+ ar+qk. s(o moment of the smaller loop, the magnetic moment of the larger loop is

  The maximum torque on a current carrying loop occurs whv*racsh+k41n en the angle between the loop's magnetic moment and the magnet 1nv+ak4ch*s ric field vector is

  When placed askew in a magnetic field, a current carrying loop that is ffwf.88vrj- q jree to rotate in any direction will expe wrv-.jfjf q88rience a torque until its magnetic moment vector

  What fundamental fact underlies the operation of essentially all elect* dbvt0s6j5tspuy27j-el no4ric motors?4t72sb5o *eyt- vdp jsjl6un0

  A circular wire loop lies in a horizontal plane on a table andr 8f+nyre6u6u7nqxnsbku 4y0; . 9bsd 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 ofyn7 960e;k yus8b run64q.+unrfx b sd 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 gc uwr-3l znv5*r1gb5through a potential difference V and allowed to enter a magnetic field B, where it is deflected in a semi-ci z5g-wc v 31rbnlgu*r5rcular 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 consists of a charged particle passing through crossepry 1b k(r w- *cpj6szn2asxgox.b())9qd)xp d electric and magnetic fields. The forces exerted by these fields are in opposite directions, and only particles of a certain velocsbw(x p)xxn6c 9pgy*s12po. ) a )rqjb-z( dkrity 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 current of 0.60 A is oriented parallel to a uniformn;t0qemk6o((g u ) rlg magnetic fie tlq(6g mog ;n0ek)(ruld of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a direc /pd n/6lq1obvtion 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 A wheni1ce +it;mz9n it is placed in a magnetic field ez;mc9+iit n1 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 lonmr) g9g ((;fbr)t kcrlg has a mass of 0.050 kg and is in a magnetic field of 0.10 T. What minimum current in the r9bf (cgmr;)t g)krr (lod is needed in order for the magnetic force to cancel the weight of the rod?

  A stationary proton is kgil ny,v2 21gin a uniform magnetic field of 0.20 T. What is the magnitude of tgygl2,2vn1 kihe 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 spee,l/ ihj ypgscnji+*10 d 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 s57i e yamcs3u-peed 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 dy4h69qc v,cw jp.vl7 kue north 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 speed ofs32/2 sx ;psx5acys:ra,z/ap(nb n3czpv s x2 $8.0 \times 10^6 \; m/s$ 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 x-5t2awubfwbir)0; m 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 oi-stoo+z 1 /aaf $3.0 \times 10^6 \; m/s$ 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 25 A. What is the magnitudeafao0*gy/7 bg ;.r d xdwgxy1: of the magnetic field at a distance of 0.15 m froo0d;7yxwx ab1 y./fgagrg*: d m the wire?

  A high power line carrying 1000 A generates what magnetico ek1 (;(nwqc0s)ggi+z- , fyrydz7b p field at the ground, 10 rk(ziew)sd 7b1pcg-fn,(yg;+ yqo0 z m away?

  How much current must flowa fy0 /eih93mb for $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a longk-ch72 s/kxpct98wiqf z ,vz 6 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 magnetic fik tw h9,vcq 62pkz7-fx/i cs8zeld of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents of 10 A in opposite directions. pa:28nj2 3nilx ut:ga They are sepalna: 8tgi a n22jpx:3urated 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 other?

  Two long parallel wires carry currents of 20 A and 5.0 A yix.0s 3f ;cqbin opposite directions. The wires are separated by 0.20 m. What is the magnetic field midw;f y3.x q0icsbay between the two wires?

  Two long parallel wires carry currents of 20 A and 5.000yb2bgbw9k;zwh xr - A in opposite directions. The wires are separated by 0.20 m. At wr0-;b 9bwgxwhb yk20zhat 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 directios 7h. ff1tvmz8ev-juoieo 1pl(u - ;+on. 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 expe7flj vo; votms1+u1uze -8op -i(h.efrience due to the other wires?

  Two long parallel wires carry currents of 5.0 A and 8.0 A in the opposite dir/qj + vyfsv,m,ection. The wires are separated by 0.30 m. Find the magnetic force per unit length be j,qyvv+f /,smtween the two wires.

  What is the magnetic field at the center h2)oa 41suippzr tv3 9of a circular loop of wire of radius 4.0 cm when a3auzi ps2tv p4r)o91h current of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 50 nq2afvx h:xx: ihh)11ucz6s700 turns of wire. What magnetic field is produced at the center of th qhf2z6v1xcsh : :7hu xn)xi1ae solenoid when a current of 10 A flows?

  A solenoid with 500 tu5 9.ljsan)1fu euc t,orns is 0.10 m long and carries a current of 4.0 A. What strength of magnetic field will it have at itsolua5j 1neuc.s f t9,) center?

  How much current must pass through a 400 turn mq yg 6 g200p*n n0dliqpcq*h1coil 4.0 cm long to generate a 1.0-T magnetic field at the cepi*p d0h qnyg 61q00g*cl qmn2nter?

  How many turns should a 10-cm long solenoid have if it is to generatezj 6rj7dp5f3 b a $1.5 \times 10^{-3} \; T$ magnetic field on 1.0 A of current?

  What is the magnetic moment of a ria)4x)bn+v:l sbmyh/ mkyv ;1ectangular loop of 120 turns that carries 6.0 A mvbs+m1;kla n4vb y xyi/h)):if its dimensions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m8v4bl,k 6kk kv 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 of kk 648k, vlkvbthe loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-v u4 c 1bbuq6i6uho8*esectional 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 magne wqyy6qbk4j rv1ph tk5.;j)2bc ms.i)tic field of 3.5 T. The loop has a wj 2pbbit. ;c rq1ys.mk6j)hv5 ky4q)n 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 magnetic fiepkv5bqe 7ql+czu7 pr) 8,a4nulw n1z1qm m 5r5ld of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane of the loopq47kp,mq ruzl5l)q1u7 bw5mnnr cz ep5v18a + is parallel to the magnetic field?

  A circular loop of wire of radius 0.50 m is in a un swo--l :; ki8shge .:2xpoxnfiform magnetic field of 0.30 T. The current in the loop is 2.0 A.8so:x 2nx-epsg lo;i -k:fw .h What is the magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop ofh)g u80awecdd+p j b*7a1nu +t 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 pa 2b0y7w t5crfiocw9/trticle (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 wio3 q ne8sa(7izth 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 an;iw-/ ek.)a/(laahucort 1tyd then moves into a magnetic field of 0.040 T. What is the radius of the proton's ;kro.tle/(a iu w ay1t/ah )c-resulting orbit?

  A proton is accelerated from rest through 500 Vhz97+re r52 (ynty whfro/b6x. It enters a magnetic field of 0.30 T oriented perpendicular to its r9yz76 rhre( 5w t2n/+yof bhxdirection of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated th1e/dqj i 35qnmrough 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 qd 1ej/m i35nqthe E-field is required if the particles are to be undeflected?