If the north poles of two bar magnets are brought close to each other, thbs o4jg/28r 0hckjp7 re magnets gbr4k 20c jo7 p8jh/srwill

  If the south pole of one bar: p.49u:/pccu 6sodq ors h(cxh4rskx2m95ul magnet is brought near the north pole of a second bar magnet, td su5u94qh:x9 /xr sup6h(mc c coprkso.l:42 he two magnets will

  If a bar magnet is divma )cy(jq89z6zuf k -9b o2agpided into two equal pieces,

  The Earth's geographic North Pole is m(rqt lo 1 yi)8srx4b6ragnetically a

  The south pole of a magnet points toward the Earth's1;uw bx )+iijg:5ecm f

  An electric current prodke f02:d a3wx .z+pbvluces

  Which of the following is corrxn2k2 v/n2xb 9i phmj1ect?

  A vertical wire carries a current straight down. Toxk48hs:js x; 27tfj cr the east of this wire, the mafthxjcj7s8x2s r4 ;:kgnetic field points

  A horizontal wire carries a current straight toward you. u5ss, wjjnqdnu+., 2 e From your point of view, the magnetic field cause+ j2ens ,ujs,5qud. wnd by this current

  A current carrying loop of g;*o /uqx/a1hwvru:p a sau9pi; y6js v0z1b,wire lies 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 current, outside the loop? The mag/xszv 9/u vs0 a ayq1*wb1a:h ;up6oji;upr,gnetic field

  A current carrying circul7gvq;5t;cmm kar loop of wire lies 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 magnetimc;t ;mq7vg5 kc field caused by this current, inside the loop? The magnetic field

  The SI unit of magnetic w(a,oz f: ls*+ai:ergfield is the

  1 T is equivalent tocwn v nyc (aba;lui.m,m 1n68,

  The direction of the fory ,r4wxs99nfqce on a current-carrying wire in a magnetic field is described by which of9sxwf,n4q9 y r the following?

  The force on a current-carrying wire in a magnetisphmlaeh-w9 -x *35 qfc field is the strongest when

  The force on a current-carrying wir9jiviff5*q x0) (p lvqo0qek0 e in a magnetic field is equal to zero when

  A vertical wire carries a current straight up cxr63strd- e f q2q8b1in a region where the magnetic field vector points due north. What is q s36-21tefrr8 xqbcd the direction of the resulting force on this current?

  A charged particle moves and experikl835e/,evxw ce 8ys4y s; zekences no magnetic force. From this we can conecsy3 4;/8 kzy5, ee 8kwslxevclude that

  A charged particle moves with a constant speed through a rtkzd+fv91xo c wy -0;zegion where a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting on this 9zvwky0 x1+o-;tz fd cparticle will be maximum when the particle moves

  A charged particle m7ffvz 8k 7ep-boves across a constant magnetic field. The magnetic force on this part8b -kpez7vf7ficle

  A charged particle is injected into a6:1tp0c)xw kk oqltf 4 uniform magnetic field such that its velocity vector is perpendicular to thectw6t f oq4)0kk:p 1lx magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in a circm;)afeh,91wvh 555u men tz pnular path in a uniform magnetic field. If the particle had been traveling twice as fast, the radius ofu5mh1n,;h e 55an vwztp9ef)m the circular path would be

  A particle carrying a chaplha3jr ,jhk xxv ;5;yi 7w;qvshio6zf:m (58rge of +e travels in a circular path in a uniform magnetic field. If instead the particle carried a charge x6( jhyz8ixf h3isajohv,; l;;5pwmv rq7 :5k of +2e, the radius of the circular path would have been

  At a particular instantlgsa dm+m + fc;3,tem+, an electron moves eastward at speed V in a uniform magnetic field that is directed straight downward. The magnetic force that dm +ea +mgl s;c,mt3f+acts on it is

  An electron has an initial velo 3gb- uzke j9cv(+ co np69*u7e/nhxasxp79fdcity to the south but is observed to curve upward as the result of a magnetic field. The direction of the gcxfh*9-sd bez7xkn99ejp 7 +anco/3u (6pvumagnetic field is

  An electron moving along the +x axis enters a region 9 sfpl4 ++njodwhere 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 pagf+4oplj +nds9e.)

  The magnetic field produced by a long straight current-carryin: fst129f5 y/ybdi xteg wire is

  At double the distance from a long current-carrying wire, the strength ohu*s x7cog 1 xik:76)5y iyymef the magnetic field produced by that wire dehgc1 ki6omyx )5yy:7x s7*i uecreases to

  Two long parallel wires placed side-by-side on a horizontal tab)at 3c)9s gp6 dvjqu5ple 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 dvj))pp6 ga s5u3qc 9tfield at the point exactly midway between the two wires

  Two long parallel wires placed side-by-1dke4g( wqzrfb t 703lf,oxi/side on a horizontal table carry identical current straight toward you. From your point of view, the magnetic fieldf iqrkxz t ,l7e d1g3b(fw0/4o at the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnitude of t+fvwun88j hwwkx-, ( fhe force between the wires is F. The ch -w 8f+8x(v,uw nfwkjurrent in each wire is now doubled. What is the magnitude of the new force between the two wires?

  A long straight wire caa lw1g.+b o4fsrries current toward the east. A proton moves toward the east alongside and just south of the wire. What is the direction of the force on the protb.f o 4wl+1sagon?

  A wire lying in the plane of the page carries a current toward thea;o3pp* scu :;dmq6e:+ixjfi bottom of the3d fp;xa u:s :pmi6;iec*+ oqj 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 your right?

  Two long parallel wires are placed side-by-side on a horizontal table. I0e 4 v:xes2hn1oczd9e :u7zof f the wires carry current in the same direct :n:0ho74 ux2fd z1c9ezveoe sion,

  Two long parallel wires are placed side-by-side on a horx/3gafpkih9eny2 2 :u3pyo 8aizontal table. If the wires carry cfxy9ke a32pg8ai:/o3n u2py hurrent in opposite directions,

  Consider two current-carrying circular loops. Bof t/ :dvzzdxei:;c/;oth 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 lofdi;/z:ex:zo/ ;vc dt op, the magnetic field at the center of the larger loop is

  Consider two current-carrying circular loops. Both are znpdisem74.8p.n* jl 8 a5lrjvgr 21i 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 moment of the smaller loop, the magnetic momenjnz1r*lmg5p.je4sadnr . i vi p 88l72t of the larger loop is

  The maximum torque on v:xu1q*od n/g a current carrying loop occurs when the angle between the loop's magnetic moment and the magnetic fielo1uq/ d:*ng vxd vector is

  When placed askew in a magnetic field, a k m0xvf9bw 9lb f4k fs+n9l0/kcurrent carrying loop that is free to rotate in any direction will experience a torque unf9fv skk mk/ +4l 0990blfxwnbtil its magnetic moment vector

  What fundamental fact underlies the operation of essentially all electric 3t s: r:-eazj,jkz2pupa b( 6pmotorsp rk t ( -3aup:6ja,jb:szz2pe?

  A circular wire loop lies in a horizontal plane on a table and carries currentq0s1xvwso, e. +auqfs7cd 9 x)69wijk 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. Whiwjsv.co6 97efxwkqd s1 u )0i9,xqs+ach 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 particle of mass m and charge q is accelerated throug5. (-kv:4j g bgl3zmb f*hfztiae1x/ mh 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 ofx4z.t:afgkbfbm i5 m/ej l-z31v*gh( the particle. Derive an expression for the mass of the particle in terms of B, q, V, and R.

  A velocity selector cons.g) sa0fx:m vgl2fewj-t3i n7 ists 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 velocity will move in a straightli a)30s :ffgtjxgew-v.m2n7 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 isor4 *lzxw/z.j oriented parallel to a uniform magnetic fieldo /xz4ljr*.wz of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 8m12stnuyh/pl ez+/eA 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 st aql0xp+1f 8orraight wire carrying 5.0 A when it is placed in a magnetic fie0a+l1qo rx pf8ld 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 and iss.n 3t(m y 6b1puox,s n.-eqqe4m x6qx in a magnetic field of 0.10 T. What minimum curr(n.ss n4 qoybx q1ex.u-6qxpm,6 t3 meent in the rod is needed in order for the magnetic force to cancel the weight of the rod?

  A stationary proton is gj h ol5i+.vr8xj .)n (p-oaatin a uniform magnetic field of 0.20 T. What is the magnitude of the mag. g xj+rth()5anpo -j8a.loivnetic 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 speed u4ok5/k cia: l5fx smxacw5+ 7of $5.0 \times 10^4 \; m/s$ 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 sp i 1gdsex8,v/ zs30ksteed 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 rs9h5wn, j. v8sqzre62hpq6 r.q 0cdc$4.0 \times 10^5 \; m/s$ 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/xkjh p4xma6aef5u8: ed 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 spee4; 9ld a w6v(kig-xrbuvh: 5 jfc8)bjqd 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 speedg)w1b kiigs j3 -a4-*xt rglv5 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. eu3qzy7 l-c4 mrub6 h2i2i*jd What is the magnitude of them *4zbu3y2 idc 7qh-rei l6u2j magnetic field at a distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magnetic 7w2,w1 lzl1d my -mwpofield at the ground, 10 m away2pdwm ,1molwl7 -yz1w?

  How much current must fl-o aq,oph:ox)a pr ;l*ow 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 straighfpk y -qubl25+k/1 vqzt wire carrying a current of 5.0 A is the magnitude of the magnetic field due to the wk1 zf/+b y u-vq52plqkire equal to the strength of the Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents of9qulp7ulll01hh a ,3u15 uxw b 10 A in opposite directions. They are separated 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 l7 a uh5u1x pull ,9l13bu0hwqother?

  Two long parallel wires carry currents o4s+8:zq t tryw;dks+ 3bjg4fhf 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the magnetic field midway between sb 8+gjqhyt4s;z 4wdt+3 :fkrthe two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite directionxcsg *tc5t;dg/ac6g 2 i+2su is. The wires are separated by 0.20 m. At what point between the two wires are the ic26 g5gsg*xctd;si 2t /uc +acontributions from the two wires the same?

  Four long parallel wires each carry k9 y/bkp64 );)qwp.wn fmv nuv2.0 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 other wir6vb9qpn w.4/fku p mn;k)v y)wes?

  Two long parallel wires carry currents of 5.0 A and 8.0 A fngjbpqo4 ;(0(9)o8gvlq2 wpgctm; tin the opposite direction. The wires are se( og4nqt02oc9 lw;gtvq8mjg fpb () p;parated by 0.30 m. Find the magnetic force per unit length between the two wires.

  What is the magnetic fie1x: ny h0y8pv0 *lus;gux,pzyld at the center of a circular loop of wire of radius 4.0 cm when a current of 2.0 A flown xvx0gy,yu ; l810zpyph* us:s in the wire?

  A solenoid 20 cm long is wound w0cjb 8d p9s1k0irh7vhith 5000 turns of wire. What magnetic field is produced at7 v80 kcjh9dp1hsir0b the center of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 ;fp47 of1efgm m long and carries a current of 4.0 A. What strength of magnetic field will it have71ffgfme; op4 at its center?

  How much current must pass through a 400 tue ;zlm)i*+gmfrn coil 4.0 cm long to generate a 1.0-T li) eg*+z mfm;magnetic field at the center?

  How many turns should eni,mo,b lt3* a 10-cm long solenoid have if it is to generate a $1.5 \times 10^{-3} \; T$ magnetic field on 1.0 A of current?

  What is the magnetic moment of a rectangular loop of 120 turns that carrnis)3g *fyu sy.z y5l0 q7bo8cies 6.0 A if its dimensi) *iyq 5z.s 80us7yfylg3bncoons are 4.0 cm x 8.0 cm?

  A circular loop of wirek0xrniyhhegcc :9m656w -b) sb0m pu, 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 of the loop is perpendicular to the magnetic fib h ip,0s gc0ynm6c9r hk-xmeu56wb:)eld?

  A circular loop of wire of cross-sectio9)eh)6u9 2i3 crtgzoubxg x.uo2i5u wnal 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 inwem;jdmv /: v9 a magnetic field of 3.5 T. The loop has amwvej ;m9: vd/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 magwis q rx ya7f1ro aa56w3;n+5lnetic field of 0.30 T. The current in the loop is 2.0 A. What is the m6+ ni1xwla5ry 5r;o3w aq7asfagnetic 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 magne ec;h+tr0nuht* y4fv9tic 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 parallel to the ma9cvyth *tue0;h4+nrf gnetic field?

  A circular wire loop of area n +- ndp5gims04(ycpo$0.25 \; m^{2}$ 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 ad)c2g tis u88single-charged particle (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 wiyxq kkq 3u*/qk .i(-qzth 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 kVth vz : hwda8bsz68w95 and then moves into a magnetic field of 0.59 hs zabz:8 86dwwtvh040 T. What is the radius of the proton's resulting orbit?

  A proton is acceleratedbg7i+lv u(5 xf from rest through 500 V. It enters a magnetic field of 0.30 T orien(ix5 l+7bufg vted perpendicular to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a poprw x2s/x25zr d4m6p xtential difference of 10 kV before entering a velocity selector. If the B-field of the velw65mz2d r x p4/p2rsxxocity selector has a value of 0.010 T, what value of the E-field is required if the particles are to be undeflected?