If the north poles of two bar magnets are brosju+a)x.l 3g *hrvxlm;m *iv,ught close to each other, the magnets wl.)um;*j,al3rxh mx+ igvsv* ill

  If the south pole of one bar magnet is brought near the ebict6qr,s .b5 3z3 npnorth pole of a second bar magnet, the two magnets wi,z6p bcn.5rstqe bi33ll

  If a bar magnet is divided into tw+6uz(ij k m35 hmw/9(dvki bf-,lme cho equal pieces,

  The Earth's geographic Nojwj*l( 4k :ra/u p/5a;kfjyozrth Pole is magnetically a

  The south pole of a magnfei6 uu 0;h qy*-/ae-qf. btgpet points toward the Earth's

  An electric current producu nlgj fsy-+q cjcwj 5-0t3c hx-,7x:hes

  Which of the following islco(ig6 j s,y) correct?

  A vertical wire carries a currensj(njhj9ln6i 5sqdk61d p6 no* :pk3qt straight down. To the east of this wire, the magnetic field poinihp d:k19s3o jkln*(5n snpj qjq666 dts

  A horizontal wire carries a current straigasc x jcfo fn vfmo);3wr2/;79 o28uoxht toward you. From your point of view, the magnetic fir7f c9 jwna;m23fxo8su oo2)o;/v cx feld caused by this current

  A current carrying loop of wire lies flat osq0 w 6p(fhml.**akimt+:l4 )f kkb bbn a table top. When viewed from above, the current moves arounkfsiq0bkmb6flpm hl)* 4( w:kbt *a+.d 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 taqpxpe7 1do d,d,axk6/ie/o6car8e2 kble 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, inside the loop? The 6c,oa1e6p i ex2 dr8d//e7 q, oakdxpkmagnetic field

  The SI unit of magnetin26fe .js tzj.c field is the

  1 T is equivalent tomq + 3:pgqb agdn7a074o o0cin

  The direction of the force on a current-carrying wir/)c6rd* r lgphe in a magnetic field is described by6ldcrr)*/hpg which of the following?

  The force on a current-carrying wire in a magnetic field is the strongest wh3dr)sim( 7 ,ac sa-nnsen

  The force on a current-d9ho :+ ds7zd;xjbybv 0ps *-x,r/toycarrying wire in a magnetic field is equal to zero when

  A vertical wire carries a current straight up in a region where th8(4num ) sss49qm cvuxe magnetic field vector points due nxq4v (n4usm ms)sc89uorth. What is the direction of the resulting force on this current?

  A charged particle moves and experiences no magnetic force. 7 s6fnc7xrf qu4; :wkv From this we can conclude thaknq47w6s: uf xc f;rv7t

  A charged particle moves with a constant ss( d)kkx /w0toia:gng.ng ,6e peed through a region where a uniform magnetic field is present. If the magnetic field points straigdo ekg/w0gktn, xn i( )as6.:ght upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moy y1e c g9cr;sn1)k7puves across a constant magnetic field. The magnetic force on thisy1kes)g7p1c ryn; cu9 particle

  A charged particle is injected into a uni3 him ;rli3jxh4pu:j87f: zf mform magnetic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring the particle': 3p7;hj43mifm8zirjf:l ux hs weight, the particle will

  A charged particle is observed traveling in a circular path in a unizx56eh a+dlw3form magnetic field. If the particle had been traveling twice as fast, the radius of the circular path woulda zl e3+xw56hd be

  A particle carrying a charge of +e travels in a circular path in a u;rhdprq5d -r,9rg4 i qniform magnetic field. If instead the particle carri r 9dq;dhr-pqgi5,4rred a charge of +2e, the radius of the circular path would have been

  At a particular instant, an electron moves eastward at spdoox t0+pcpu g 8vuzgw.745(keed V in a uniform magnetic field that is du5u 4g.tdcp07g kwxv+8(o zopirected straight downward. The magnetic force that acts on it is

  An electron has an initial velocity to the south buyi5b +dskh;c ;t is observed to curve upward as the rehkb+; 5s cidy;sult of a magnetic field. The direction of the magnetic field is

  An electron moving along the +x air.unaymdy mf;3, z80 xis 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 thedy,.u3z0f8;amr ni my page.)

  The magnetic field produced eogu awuy0./1p1/wnb w 4ag5oby a long straight current-carrying wire is

  At double the distance from a long current-carrying wi9r+ 9/yts) s(i+yldvol (zfkhre, the strength of the magnetic fiy vl 9frtoyld/(s++)s(iz 9kheld produced by that wire decreases to

  Two long parallel wires placed side-by-side on a horizrh -)hiz 8d/c viyndm).e:*f gontal table carry identical size currents in opposite directions. The wire on your right carries currenti )yrdf c- 8:.vmh*z/hi)g edn 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 two wires

  Two long parallel wires placed socz6r*-d ,w. jmi3hy nug;w9gide-by-side on a horizontal table carry identical current straight toward you. Fr. - ;wo3r 9djc*g6,z iymugnhwom your point of view, the magnetic field at the point exactly between the two wires

  Two long parallel wiremlk) 3jwb24)h swvak6ojnn8 .ir)k.as 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 t2 w.vjr )khk8kabai4 )6jwnosm.3l )n he new force between the two wires?

  A long straight wire carries current toward the east, d9 qu10 gwc,xge(9/fxi vlvm. A proton moves toward the east alongside and just south of the wire. What is the dire /gcevivw(9 qum fld19,xx0g,ction of the force on the proton?

  A wire lying in the plane of the page carrieke;a:fo. s nb kb-/(fr)u cf5ds a current toward the bottom of the page. What is the direction of the magnk ( ns-/okbb5cfe d.af )uf;r:etic 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 plafoop-hr ( 5dzj5krk .2ced side-by-side on a horizontal table. If the wires carrk oo25.zp-5r kfjd(hry current in the same direction,

  Two long parallel wires are placed side-by-side on a horizowz1;dosk x.3 kntal table. If the wires carry kd1x .zwks3; ocurrent in opposite directions,

  Consider two current-carrying circular loops. Both are made from one strand ofo5d xy4bb 79fm wire and both carry the same cubf9oxbd 4ym75rrent, 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 larger loop is

  Consider two current-carrying circu-b; gy5 g95mbvb tq3wllar 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 momenyv5w59b blbt;-qg 3 mgt of the smaller loop, the magnetic moment of the larger loop is

  The maximum torque on a current carrying loop occurs when th.vtlez zw;b pn 14;-nde angle between the loop's magnetic moment and the magneti z;nvwdt4z-blp.1en; c field vector is

  When placed askew in a magnetic field, aiszzynn*6:8ay *vofsj 29 0jp current carrying loop that is free to rotate in any direction will experience a torque until its magneticspj* 6yi9foyz0zn8 : v a*j2ns moment vector

  What fundamental fac(li u jb-ou/a ij0),got underlies the operation of essentially all electric motors?ou(/0igl)i o ub,ajj -

  A circular wire loop lies in a horizontal plane on a tablqj19yalft lv1y 8//p (r5ebrse 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 horizon/tsp19j/ver1r8y( l qyfba5 l tal. 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 particle of mass m and charge q is accntn87c/jc06im n l; wxelerated 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. 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 ocx7 n0w ; tn6jmc/8nilf B, q, V, and R.

  A velocity selector consists of a charged parti /let 0xolrest/klqf.b 2 1/g7cle 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 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 t2ls xq1l t e get0/fk7./lorb/he north. What direction should the electric field point?

  A 2.0-m wire carrying a current of 0.60 A is orientnc(g26gaw + cted parallel to a uniform magnetic +c nc gw6ga2(tfield of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10* 4- lxgunx4sr A 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 when it is placeo tr+)cerel n*t3g8.f d in a magnetic field of 0c3l*8 rtgnf.)oee+rt .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 map//hpto w+vv4 0x*ywo1p y2j qss of 0.050 kg and is in a magnetic field of 0.10 T. What minimum current in the rod is needed in order for the magnetic force to cancel the weight of t4 jw y+wq2voy/vtph*p1/o p0xhe rod?

  A stationary proton is in a uniform magnetic bxtd iel8w68 8rzod/mdjphs 1 2(+ mu/field of 0.20 T. What is the magnitude of the magnetic force on the protltx ei mu8128b dm/ psr8(hjzow6d d/+on?

  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 spv. :6 0z1m sa xohyz)/jhu*eygeed 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 speed o9r ti-qozs(fakiy )*2f $5.0 \times 10^7 \; m/s$ 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 nc7w u-hwyljg8n6 2t/o0/y6 g9prrnwqorth 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 witkcm m ) *ezb9bxo(;6 8l-gnlp9puxn7fh 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 magnetic force of the electron.

  An electron moves with a speed7 ik4xu ucn)pl.v;7mx 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 olnik .(yt1pqi+u py5 s r3c*j2f $3.0 \times 10^6 \; m/s$ 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 tiy voyan ,3t68he magnitude of the magnetic field at a yva38nyi to, 6distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magnetic field at l 0yqd:9ox1xl the ground, 10 m away?xqxl1d l 9yo0:

  How much current mustv*qk3*ko)vx/) fpy e 83xm rqt flow 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 sto*mz*mr + qoszbb/ys. -ec.:vraight wire carrying a current of 5.0 A is the magnitude of the magnetic field due to the wire equal to the strength of bb.zv *or+mmscz y* q.eo-/s:the Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents of 10 A ijzme/;s.w bywb2tj) 1n 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 theb2jswz. /ywb t);mj 1e other?

  Two long parallel wires carry currents of 21yk1dav/yib2xc m.;py vgdvvq(2,k5 tq n0-h 0 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. Wh k-b2xdp(2 h;a,.vtvvy mvy/dqc1ky gnq 051iat is the magnetic field midway between the two wires?

  Two long parallel wires carry curry7y+ 9r7(40 oyjmjiw4c v o3y 7ieqhevents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. At what point betwee9r7 ohyi3e4em+jy4 0wyjvy cv7qio7(n the two wires are the contributions from the two wires the same?

  Four long parallel wires each carry 2.0 A in the same directx3n m+7 ryz3g)6 ofdtzion. 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 mazdx+ ) ymfz3rong 6t37gnetic field does one of the wires experience due to the other wires?

  Two long parallel wires yv9ez0 j:b li5carry currents of 5.0 A and 8.0 A in the opposite direction. The wires are separated by 0.30 m. Find the magnetic force per unit lijez:0l v y95bength between the two wires.

  What is the magnetic field at the center of a circular loop of wire of :qv*ba9hles 30 he5tu /rf *jaqb0v,a radius 4.0 cm when a current of 2.0e*,: lt0hb u *q0jaaa5qsh3/v9rfveb A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns pq+ryf mkx:8qt+n;p+ of wire. What magnetic field is producedq8 f+:qxypmk ++rn;p t at the center of the solenoid when a current of 10 A flows?

  A solenoid with 500 tur6w)t55c. gpgm *tyqlfl8w3on4er 1rh ns is 0.10 m long and carries a current of 4.0 A. What strength f5qn y4.motw 8gh6 gr5w3l 1 pcel)t*rof magnetic field will it have at its center?

  How much current must passj/lb 4;eoam3 c6o /6et ouru /kqo+4nn through a 400 turn coil 4.0 cm long to generate a 1.0-Tnloore3nu/etc; j4m+4 o 6u boa /q/6k magnetic field at the center?

  How many turns should a 10-cm long solenoid have if it is t-f gbm52dq 05 3buvacxo generate a $1.5 \times 10^{-3} \; T$ magnetic field on 1.0 A of current?

  What is the magnetic moment of a rectangular /ec.npei x,rn)oh.44 r5s ljg loop of 120 turns that carries 6.0 A if its dimensions ar .,pxg lcen4ro.inerh /sj4)5 e 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in ahfreq2k c o/ de1 gidc0m1m/79 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 ma 0o/cf/egr2im 1m c7hd ke1dq9gnetic field?

  A circular loop of wire of cross-sectional0q: istdb:pz hb**j(j 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 carrdftuo )*ip7.vying a current of 2.0 A is in a magnetic field of 3.5 T. The loop has an area fvud)* p. it7oof $0.12 \; m^{2}$ 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 f tq bhz ez((4(b830otnm4b hlmtcg,b5ield of 0.30 zc58 gmhbqt(( b n bt0e(mohzb4lt3,4T. The 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 0.50 m is in a uniform magn6vq(v9we t a6j sw),oietic 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 magnetic fv ,sji6t( )ovw qa6we9ield?

  A circular wire loop of)e ucv)-zww xe.jf*a1 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 (charge ,:vwwbcqa8bime ra8 :t)hkn60 8dnw* 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:2 jpstwk5weznnm .hx1s *+h-ro* m)s 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 and then moves into a magnetic z5hpj6j a ;t,gz)kaqff7i i 4+field ;gai 67 + z4ij5th fpz,)fqajkof 0.040 T. What is the radius of the proton's resulting orbit?

  A proton is accelerated from rest through 5mokerxbg4d:,4br9.j x(20pqdn in1v 00 V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of movn4bmrdq,dxjr1x .k:bn4 0 o(2i9p getion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potential difference of 10 kV befx p(x0v)*p yagb r./vtore entering a velocity selector. If x0x.vpy( )v*a tb/prgthe 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?