If the north poles of two bar magnets are brought close to each other, the mhfpes 0sa ,(x0agnetx fea0(shs,p 0s will

  If the south pole of on8:r ewfzd zr- ,3d+drb 2ukzu(e bar magnet is brought near the north pole of a second bar,ud(zudrw+ef: 82b3 rz -zrdk magnet, the two magnets will

  If a bar magnet is divided into two a/yky5mw1: gmrab-qbj.; 9m e equal pieces,

  The Earth's geographic9ct puj ;r,uz(sy+fk, North Pole is magnetically a

  The south pole of a magnet points toward the Eart-1mf jdv q/v)ff/kgwgfv04vem a(2 3jh's

  An electric current prod4wb 08ioenqzmbf z5j:ti5u ; 1v 25wjjuces

  Which of the following bpazm:* qrperjh53e- 122plc fysn8 9 is correct?

  A vertical wire carri9cgzk1 9(o)hp8 agd aqpde 79zes a current straight down. To the east of this wire, the magneti9 pq8ha 9a kgz o7ezd(dp9)gc1c field points

  A horizontal wire carries a current straight toward ugg 5to7/6smvua z)qdn0e3p5 qx3-b cyou. From your point of view, the magnetic field caused by tuxt3m6o p5 ng7ua/s c53 q ezdq0-vbg)his current

  A current carrying loop of wire lies flar qv19mj il/q8t on a table top. When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the mrml9q1qij8v/ agnetic field caused by this current, outside the loop? The magnetic field

  A current carrying circular loo 36xzye4ai);emmt0iajq 9x5in0k1x s p of wire lies flat on a table top. When viewed from above, the current moves around the loop in a countii; y nkj5) eq4a 1mex690sxx0az3itmerclockwise sense. What is the direction of the magnetic field caused by this current, inside the loop? The magnetic field

  The SI unit of magneticgbf/xm w k(ze148+s0(qht x. rlav3vrq .0uol field is the

  1 T is equivalent to *lnau83bjy /g

  The direction of the force on a current-ca) r xwy+,wh-turrying wire in a magnetic field is descr)w w-+ru th,yxibed by which of the following?

  The force on a current-carrying wiwkq5r gwg(uji; k,/:a re in a magnetic field is the strongest when

  The force on a current-carrying wire in a magnetic field is equal to zero w)x/p0ymfnd e+m5qwu .ash49ahen

  A vertical wire carries a current strbm7+rkg :l,p aaight up in a region where the magnetic field vector points due north. What is the direction of the resulting force on this currekg mb ,p7l+a:rnt?

  A charged particle moves and experie v*pwb-se1nv0 e )h4iunces no magnetic force. From this we can concludei4s* vp-v ebh0enw 1)u that

  A charged particle moves with a constart+p2d.ii)zj- 4be mc 0ps z(hnt speed through a region where a uniform magnetic field is present. If the magnetiz i)d(mt.p -4crj20hsz pb+eic field points straight upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constant mayq.)q h qe -6ra01phjmgnetic field. The magnetic force on this particleh6qrq0j amq-p.1 hy )e

  A charged particle is injected into a uniform magnetic field such that its velx 0hnd,ag5 6m+ yotq(.-fulsf6w/c mz ocity vector is perpendicular to the magnetic field vector.fc d5,f/n0+-xu goh aq tw l6my(zs6m. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in ah-q3hie 5 g piuqjkq9jqly304n 3 tw,- circular path in a uniform magnetic field. If the particle had been travtj0 qp9h3- iqh3ywq5unqge,li - jk43eling twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e travels in a circular path zp w*0qvpw*0kpsoo4 ; in a uniform magnetic field. If instead the particle carried a charge of +2e, p* 0 v0wp;zwpsqko*4 othe radius of the circular path would have been

  At a particular instant, an electr )m2gq2n9s(( xwyxwdp on moves eastward at speed V in a uniform magnetic field that is directed straight downward. The magnetic force tha ( y29 dxx2m(spgqwnw)t acts on it is

  An electron has an initial velocity to the south but is observed to curve upwr i383rnpk)cd ard as the result of a magnetic field. The direction of t8d ni)prr33 kche magnetic field is

  An electron moving along the i7.52nl bd bnubl l 6mv-;z60ky3xgfznpi3c 6 +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 page.)m2pdnx7;k v3lln6 uzy 6 i lf0bzgb3bcni6 -.5

  The magnetic field produced by a lxjw gy()izyig u6kgj;0(:8pnong straight current-carrying wire is

  At double the distance from a long current-carrying wire, the strength of the0p .f1kz;z msq magnetic field prodzpms q. kf;1z0uced by that wire decreases to

  Two long parallel wires placed side-bydqod(a 9 w 9c3z)eg9os-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.o o99q3 )c(wdgs aze9d 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 table carry i+tv0 y3wzx w+ndentical current straight toward you. From your point of view, the magnetic field at the poinn0+vy3tw z +wxt exactly between the two wires

  Two long parallel wires carry eq:0ehxp2 yp xs)ual 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 the two wir )peshxy p:02xes?

  A long straight wire carries current toward thh rp)39sn w)cax4lzd. g16 qhxe east. A proton moves toward the east alongside and just south of the wire. What is the dire1crx g.p xz)a 4swd3)96 qhhlnction of the force on the proton?

  A wire lying in the plane of the page carries a current toward the ;z*yqm mvfn; bb9dq +(7s5agcbottom 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 youcvs;y q*+nbfb9g5 7(; dzmmqar right?

  Two long parallel wires are placed side-by-side on a horizontal t2 - vtx *yda5i8 a3duize3:vhnable. If the wires carry current i 3x:y 2ua-3vita5vzi8d *e dnhn the same direction,

  Two long parallel wires are placed side-by-side on a horizontal table. s4c,q6 dn okt0 ue8ye. If the wirt4sqn68 c0dyek, ou.ees carry current in opposite directions,

  Consider two current-carrying circular loops. Both are mfp ctg./ iy0.wade 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 cei ct.fy g/pw0.nter of the smaller loop, the magnetic field at the center of the larger loop is

  Consider two current-cg mxnz x7m*:34 ycyy+xarrying circular loops. Both are made from one strand of wire and both m4 y+7:xnyxy*3 x cmgzcarry the same current, but one has twice the radius of the other. Compared to the magnetic moment of the smaller loop, the magnetic moment of the larger loop is

  The maximum torque on f/)k2 w hxdi+gw -z+vua current carrying loop occurs when the angle between the loop f/+gwwz-2h+ ix)dkvu's magnetic moment and the magnetic field vector is

  When placed askew in a magnetic field, a current uod f;.iio;1unl- vh(carrying loop that is free to rotate in any direction will experiendou . f1-;i(;vhliuonce a torque until its magnetic moment vector

  What fundamental fact underlies the oplos (ps4u,+km eration of essentially all electric motors(4 lom k,s+sup?

  A circular wire loop x/dz axoh2yrxy0rx +r h+6g; ;lies 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 thh dr6 rx2o;ra yy0xz;+x/hg x+e 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 p6l+bnub et s( pez a1xi-cn0m+:vuh) 5ka.3xnarticle of mass m and charge q is accelerated through a potential difference V and allowed to enter a magnetic field B, where it is deflectba.15(vue) uczxsb:mhn 0 n 3 pakin- l++tex6ed 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 consists of a charged particle gafm 61 z3z.topassing 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 m16ga3zom tzf .agnitudes 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 pe/wkgw i0s7 *u8e)bsu7 2qadto a uniform magnetkesgas /i8u b*0pq27weu) 7 wdic field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 Amtxmbkx t .0qij) 9o13 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 5.0 A w bqenfrr )oes+zuc h eu(2ata 7(e5,87hen it is placed in a magnetic field)aft(r8(qa ecs75ez+ 7ueo r2be u, hn 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 0:.au 5k7wvykiea4zbaqt; . sam w;5sa mass of 0.050 kg and is in a magnetic field of 0.10 T. What minimum current inaak:a;ss aq.wkz7 vw 5my4e u50i.bt; the rod is needed in order for the magnetic force to cancel the weight of the rod?

  A stationary proton is +,ea tty7tlv2p5 e8mq in a uniform magnetic field of 0.20 T. What is the magnitude of the magnetic force on the pq7ae l8,epmty vt2 t5+roton?

  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 speed of jt6ysnc2a93m7 -ah g n$5.0 \times 10^4 \; m/s$ 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 speed of k fj cf+8*nn67dv :vu8uowzw7$5.0 \times 10^7 \; m/s$ 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 witwzd.l.-od h m3xfx:n,h 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 spe c8k ;jge7l zp0av3d82b b)jffed 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 avl6 ha) neb.s+6hqe( b 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 speeda2x ebx rd5.,s was;5c 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 25 A. What is the mag;ny :lba t8df:nitude of the magnetic field at a distance of 0yl8bdt : ;:afn.15 m from the wire?

  A high power line carrying 1000 A generates wha .hxo8 q9yo an999c f2ytwtv(yt magnetic field at the ground, 10 qy9 8o. 299yfwvtay c (9toxhnm away?

  How much current must flow+o.e;v3zzj nb4dh s0s 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(ffl ooa6: ::pnk8gfg wire carrying a current of 5.0 A is the magnitude of the magnetic field due to the woof (k8:n: :pggfa fl6ire equal to the strength of the Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires c 0zpv ,0 qt el9a*lzg(hve6t)sarry currents of 10 A in opposite directions. They are separap ) 9vqlz *0 g6t(vh,szae0telted 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 offej*k, 6re 0y 0x kjtr;*ibgwwx;( q+l 20 A and 5.0 A in opposite directions.0r* f tre;ix eg,jwx*wkjq( bl6+y;k0 The wires are separated by 0.20 m. What is the magnetic field midway between the two wires?

  Two long parallel wirs/mlmq 9x4g b.o9.uc. o;ybul*fn fn9es carry currents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. At what point between the two wires are the contributions fr9.4u l.g m bnu9fms nflxoqo*;9c. b/yom the two wires the same?

  Four long parallel wires each carry 2.0 A in the san d.t:xacow6bo234dd-lgwc + me 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 theoxwodb cc w6n2d tg+ 4.a:ld-3 other wires?

  Two long parallel wires carry currents of 5.0 A and 8.0 A in the opposite direc 0i)u)pe2tazs 53m(zdxox k8ction. The wires are separated by 0.30 m. Find the magnetic force per unit le2ezz)xk8dua3px0(c 5 )tomi sngth between the two wires.

  What is the magnetic field at the centezcrki:* .jjj g2n4 b1wwah(*rr of a circular loop of wire of radius 4.0 cm when a c ij: r*2aj4 h1rg*kz.wbc(njw urrent of 2.0 A flows in the wire?

  A solenoid 20 cm long is woun:16tw qubmhs+ d with 5000 turns of wire. What magnetic field is produced at the center of the solenoid when a current obt6huw: 1 q+msf 10 A flows?

  A solenoid with 500 turns is 0.10 m lojy:;xii+ rnc k35 efd1xc1*b gng and carries a current of 4.0 A. What strength of magnetic field will i5e1in*3c x:j1 i+r;gfcd kybxt have at its center?

  How much current must pass through a 400 turn coil 4.0 cm long to generate a9+jp)bp;ds8yvg s pr/ 1.0-T magnetic field at the cenv spp)gp;jd +8b /yr9ster?

  How many turns should a 10-cm long solenoid have if it y+ g-ac k1/ l3:wfcefwel*8aqqx5v(ais to generate a $1.5 \times 10^{-3} \; T$ magnetic field on 1.0 A of current?

  What is the magnetic moment of a rectanguy. f4( :(rlqb6yrhc(cb b7liplar loop of 120 turns that carries 6.0 A i:cflh(7ybc4b(rp .l ibq6y (rf its dimensions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is i, f5ecmf9s wn1yh,x1da v,cr1 n a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. What is thdrf xva1 ,efc,ymsh,c5nw119 e magnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sectional a :3bzmkbh/ kbg v e2x49(ek )ghnwj4,jrea $0.12 \; m^{2}$ 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 magnb , zzhj:+ex mgz/19khetic field of 3.5 T. The loop has an gz +,ebhzj/9z xk1:hmarea 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 i y*9zrkzm q.marh:.94ku.qg a uniform magnetic field of 0.30 T. Ther4.zmz 9.h* k.ry:q guaq9mki current 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 loop of wire of radius 4w g *-fp6nphpr8dqq90.50 m is in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 Apwqd r9-p 8q*4pfhg6n. What is the magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop of arej,/+cwbbcz6 ylt ;9k mr ma1+ka $0.25 \; m^{2}$ 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 (charg au99i8gn7x p mu;c+ae9z(evce 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 velocity oavh5dr 8lo6pt04(b4p f8nvk $6.9 \times 10^6 \; m/s$ 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 i tb)/nfp;vxk:d xv6 fy(+jfh8nto a magnetic field of 0.040 T. What is the radius of the proton's resulting orbit? vfpvxn8j+fb(y:;kfx) /d 6h t

  A proton is accelerated from rest through 500 V. It enters a magnetic field oglb.r9/b z k.jf 0.30 T oriented perpendicular to its direction of motion. Determine the radius of the path.kbj 9/bglr.z it follows.

  A beam of electrons 3.qw w-wfj 9apis accelerated through 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 valuawq3wjfw p 9.-e of the E-field is required if the particles are to be undeflected?