If the north poles of two bar magnets are brouapj0 , v/jo9hz5qy l(jght close to each other, the magnets wi(0qlvj h ,zp/oyaj 9j5ll

  If the south pole of one bar magnet is brought near theec dx07(h5 vzj3x l8jqz(ax- n north pole of a second bar magnet, the two magnets wilx 8d53 qzxv07-zna(j(cxh jell

  If a bar magnet is divided into two equal pieces,xff9ke r *pok4,cp +ijd+f a**mm(7 us

  The Earth's geographic North Pole is magnet8mq z 8xk dhmg+6oq +h4xrv/q.ically a

  The south pole of a magsp3xum psd) y*a40 d gj8.x(pdnet points toward the Earth's

  An electric current pnh r6+n)niz ,wroduces

  Which of the following is cor:) v: 7ikhs:)aci*dto w.bt( tg0 frht(*spqv rect?

  A vertical wire carries a curren+ usd tz ej46r4)fis-tt straight down. To the east of this wire, the magnetic fie+6ttde4r4)issz- j ufld points

  A horizontal wire carries a cuo27qpm+/s /vd qbera -rrent straight toward you. From your point of view, the magneb2sdaq oe-/p7r +/mvq tic field caused by this current

  A current carrying loje:em v *pol+i:li; w7op of wire lies flat on a table top. When viewed from above, the current moves around the loop in a ciil *7:w;m oe:j+elvpounterclockwise sense. What is the direction of the magnetic field caused by this current, outside the loop? The magnetic field

  A current carrying circular looz qjo +-kv(q,kp 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 j-k qz(v,kq+odirection of the magnetic field caused by this current, inside the loop? The magnetic field

  The SI unit of magnetic f.+fyapz0: rc ht*0r1w sanug 5ield is the

  1 T is equivalent to2)p 6i1dnr jg f7iq0bx

  The direction of the force on a current-carryji 170n/33 t-ay y qlah *pn/vud2zttjing wire in a magnetic field is described uayj7*atjt/ l/qid1 3pvy- 2nt3z h0nby which of the following?

  The force on a current-carrying wire y ngqz1+b-090+zj ytifhe ;bxin a magnetic field is the strongest when

  The force on a current-carrying wire in a magnetic field is equal tof )x3u- rpfu0o zero when

  A vertical wire carries4. o c)1 zhclf6k*ciek a current straight up in a region where the magnetic field vector points due north. What is the direction of the resuhco f14ecki*z)lc6. k lting force on this current?

  A charged particle moves and experiences no magnetic force.;xz:k*/:w.cce np4 zf9pyqmj From this we can conclude thj 9/n ;*ppk4zccfyzwqx. em:: at

  A charged particle moves with a constant speed through a region wherem jio:x 0.2ocr a uniform magnetic field is present. If the magnetic fieldi .xo:rmj2co0 points straight upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constant magnetiadp.:xjqeay 86joh.fh r4 zv+m 9 c)i4c field. The magnetic force on th+j ) oc:ajhyr.zmq8 6vi he.x944fpdais particle

  A charged particle is injected into a uniform ma53aus.ho ii w4gnetic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring 5iuhi. sa ow43the particle's weight, the particle will

  A charged particle is observed traveling in a circular patu2a75yj fq7f jkg6b8 c:1bbh oh in a uniform magnetic field. If t7y27jcqg ujbh8 5k b1ff:a6obhe 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 circulaqjo ggmc/5w 8qp 3c21k0lm*l jr path in a uniform magnetic field. If instead the particle carried a charge of +5g3qco *1k 0/ jwml2 pq8gjclm2e, the radius of the circular path would have been

  At a particular instant, an electron moves eastward at speed V in a uniform zucapr0 2-p,fgk1kl. magnetic field that is direc,cu l k2r1-0pz.agfk pted straight downward. The magnetic force that acts on it is

  An electron has an initial velocity to the south but is observed tox/)hrrj g mc7(, p rnz,u6nbd: curve upward as the result of a magnetic field. The direction of the magnetx )p:u6, 7n/ch zgrj rbr(dm,nic field is

  An electron moving along the +x alnnkx) z9 f2wac 0(snt 1k5ut: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 twctl:san n2(k5 xut01)9 fknzhe page.)

  The magnetic field produced by a long straight current-carrying wire.nhp2qz nt.qi3*oh*l5ur :4k9 qrcq v is

  At double the distance from a long current-carrying wire, the )br;4 f4m m6c jk,fcvixtlo77sg2 1ks strength of the magnetic field produced by that wire decreal)km f44s;7ivsxbfr1tock 6gc7 ,2m j ses to

  Two long parallel wires placed side-by-side on a horizontal tad s+ /s+ohm.wlpors9 7ble 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 magneti7o/wsdos9 .rlpms h ++c field at the point exactly midway between the two wires

  Two long parallel wires placed side-by-side on - ss7vylr*7nra horizontal table carry identical current s ly7 v-*s7srnrtraight toward you. From your point of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equa9 1vd r3i3pthjl 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 r1tdj9ph3 3 ivthe two wires?

  A long straight wire carries cur2n7:rh tps3( n7 q6jfyd7uiehrent toward the east. A proton moves toward the east alongsi7e6yutrhf(3s7jh n :np72qidde and just south of the wire. What is the direction of the force on the proton?

  A wire lying in the plane of tj/ zwza4u 5 yr9+pym o1(tvc/ehe page carries a current toward the bottom of the page. What is the direction of the magneti /zj( wp o5e4ym z9c/1vatru+yc 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 hc/y,0d,g w. wd exqk3q/cxl0horizontal table. If the wires carry current in the sac/ lx, c/qwwey,k0q xd3.hgd0me direction,

  Two long parallel wires are placed side-by-side on a horizontal t zb;-h 2un;2p(kdeaxoable. If the wires can phuk2a2zod(;;bxe -rry current in opposite directions,

  Consider two current-carrying circular loops. Both are made from one strand z p );un/m/ryoof wire and both carry the same current, but one has twpmn)o/u rz;y/ice 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 circuls4cve,h i qm451v az)b(qao;jar 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 moment of the smaller loop, the magnetic moment of the lar)aaoe q;s,j(c4mvi vb1 z45 hqger loop is

  The maximum torque on a current carrying loop occurs when the ;w)be 8 vd-jzv.2jzgf angle between the loop's magnetic moment and the mag bfe -;vj8vg2 dzw)jz.netic field vector is

  When placed askew in a magnetic field, a current carh jl 5nqe8i059tq 3bixrying loop that is free to rotate in any direction will experience a torq5qj5b3h9x i8i0nqe lt ue until its magnetic moment vector

  What fundamental fact underlies the operation of essentia7d ui 3x:6 6yc*rxybdglly all electric motors?:d*3ib6yxcy u gxd7 r6

  A circular wire loop lies in a horizope;0xjqlpo xm jk7)8 1.tc:kzntal plane on a table and carries current in a counterclockwise direction when viewed from above. At this pointl0x78kmqz c teo. 1p)j ;j:kxp, the Earth's magnetic field points to the 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 particle of mzscpj8 idqjr i .;bz2(m3at2;ass m and charge q is accelerated through a potential diff arim3 2p;zsjjbid;.zq 8c(2terence 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 consists of a charged particlt 2 uyrst*-6x:uoho-ze passing through crossed electric and magnetic fields. The forces exerted by these fields are in opposite directions, and only particles of a certa: oh-sutt 6xr-*zyu2oin 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 the north. What direction should the electric field point?

  A 2.0-m wire carrying a current of 0.60 A is/zprmldhr j+rw -1i8 8 oriented parallel to a uniform magneihr8 rrl-1d8+pz/j mwtic field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A n0mzwn u :we*2in 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 meterx bs/jk6)zk8g4q i(bi on a straight wire carrying 5.0 A when it is placed in a magnetic field of 0.020 T? Thiqb 6gi8k(z/ ksjx4)b e 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 magnetic field ( d0uanqn8d5kw gqe58 of 0.10 T. What minimum current in the rod is needed in order for the magnetic force to cancel the weigh055edkq daw8nu8 q (ngt of the rod?

  A stationary proton is in yqm0 h :ph :hrn,a*2g4aog.bny-m9j ga uniform magnetic field of 0.20 T. What is the magnitude of the magne 0g4h.m,oaahqb- *yg:n h jm:y2n 9gprtic 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 wit88gnx+tm az0 wh 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 ahzbzhnmj17. /wokzp7 64 lrb8 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 sq,3l zwepl 2wu**roy 6peed $4.0 \times 10^5 \; m/s$ 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 o 33vqgnx))n.jgqmi l5fae*n-f $8.0 \times 10^6 \; m/s$ 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 ajgli a i (,nrvute51(2agaw,0 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 of ti j 4 vanl-kaxj8yt16z-zg2y-4 bux)$3.0 \times 10^6 \; m/s$ 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 +tcy2 sle(w-j carries a current of 25 A. What is the magnitude of the magnetic field at a distance of 0.15 m from jlsy (2c we-+tthe wire?

  A high power line carrying 1000 A generates what magnetic field at the ground.4a3iej6rxy pweuw ( j)7z1qx, 10 m awaeu6.i7r(jwyz q3j 4ex)pw1 x ay?

  How much current must flow fy4 q cci.7gz:hor $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long straight wire carrying a current of hpekw5 r60to) 5.0 A is the magnitude of the magnetic field due to the wire equal to the strength of the Earth's magnetic f0pw5rt h)eok6 ield of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry curre.k3r3,.i d(hdi2gylhl gr4u mnts of 10 A in opposite directions. They are sepggym3 .lu ,hil.r (2id43 hrkdarated 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 i/eh 4)+,saa+ w sleruen opposite directions. The wires are separated ,+u+ /e)a4 hswaser leby 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 in opposite directioxhhu(b*76g5s hgzu2l ns. The wires are separated by 0.20 m. At what point between the two wires are tb*h2shulg5 h 6g7xu(zhe contributions from the two wires the same?

  Four long parallel wires each cv zh 9er,c;ss-fwve47arry 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 experieh v;7-csee9fwrvs z,4 nce due to the other wires?

  Two long parallel wires capt9ud;ri d s3/rry currents of 5.0 A and 8.0 A in the opposite direction. The wires are separated bysru 9idtpd3 ;/ 0.30 m. Find the magnetic force per unit length between the two wires.

  What is the magnetic od0bf2rzxy 1 - vl/0ogns.8isfield at the center of a circular loop of wire of radius 4.0 cm when a current of 2.0 A flows in the wire?z-8.v 1no20 sg/ bi fxyo0dlsr

  A solenoid 20 cm long is wound with 5000 tur xv.u7gcbj( u*s3p9 lrns of wire. What magnetic field is produced at the center of the sol b j gu(3usc7rx*pvl.9enoid when a current of 10 A flows?

  A solenoid with 500 turns is e) jj+;hrsb.xsr )yk-bd;;wp 0.10 m long and carries a current of 4.0 A. What strength of magnetic field will it have at its cen- js; sr+b;) y.)e jpbhdwrx;kter?

  How much current must pass through a 400 turnwbnbj-9wl*d ymf/7),j p hxt * coil 4.0 cm long to generate a 1.0-T magnetic fby * x-n/,wh* wl jd7)bp9jfmtield at the center?

  How many turns should a 10-cm long solenoid have ifo e omvz0w5o 1nb)7az+wb: fy- 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 carries 6.0x15ka pe9apd*nv8b,t A if its dimensions are 4.0 cm x 8.0 cm?p , 8x5tbkapv dn*e91a

  A circular loop of wire of radius 0.50 m is in a c g/o(uh7(3p:uci ydyuniform 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 perpendiciogu(p3 :y/ 7u(yhcd cular to the magnetic field?

  A circular loop of wire of cross-sectional area 2s :j12 0 p6scleoo po6l2slza$0.12 \; m^{2}$ 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,gzv1 hx2mpp 1 a current of 2.0 A is in a magnetic field of 3.5 T. The 1zxpph , 21mvgloop has an 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 field of 0nq80) sl vont hq--xn0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane of the loovqnn-h8tn- )q lox 00sp is parallel to the magnetic field?

  A circular loop of wire of radius 0.50 m is in a uniform mhzk +-3sv urom/g:.v oj) u:d e2uz+vw)ot3knagnetic field of 0.30 T. The current in the loop is 2.0 A. What :odzmohv-ovut:3. +u +v3n k zj2es)k)wrgu / is the magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop of area zbpik-l8/o . w$0.25 \; m^{2}$ 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 e) has a s 8r/*tw(ian h4p yu.uen6 ad8hpeed 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 velocf60 kp/ h+(wl oe8l0cngut)uaity $6.9 \times 10^6 \; m/s$ 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 aabgrzh v9)-tyyg -g8r*( :i hy potential of 1.0 kV and then moves into a magnetic field of 0.- ghay-zgyir: gb (yvt)*r98h040 T. What is the radius of the proton's resulting orbit?

  A proton is accelerated from rest through 500 ncky/739ag-s ;2 ou lj -q jpn+,mckvvV. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of mo9/j;32cams-+ nok ,-p 7qjuckvnly gvtion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a uy8 /lmh;am /gpotential 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 the E-field is required if the particles are to be undeflect /a;mulhm/ 8yged?