If the north poles of two bar magnets are brought clo y3x4tqsf8+r2lb 9ypqse to each other, the magnets wilsy23yq f q4rplb+tx98l

  If the south pole of one bar magnet is brought near the north pole of a sfd ip 3gul)*+second bar 3dgi+ p*lusf) magnet, the two magnets will

  If a bar magnet is divided int6esg)v:wpw:0duav2m t 3co -b o two equal pieces,

  The Earth's geographic North P)t. ;3dacul(/ vmaws oole is magnetically a

  The south pole of a magnet points towaw8i2p mke/jxln (s /h46i3( d0guhphdrd the Earth's

  An electric current produe;.vmr*v0vv *7 dz i spejg2y3ces

  Which of the following n e347bmty /clis correct?

  A vertical wire carries a curr)ui +bisae+ nez;o c-vqt g4-3ent straight down. To the east of this wire, the 4qoc 3z)e n+b t+;-uiasg e-vimagnetic field points

  A horizontal wire carries a current straight toward you. From your point of vie epwwp-/bp. )pw, the magnetiepp/pw.b w -)pc field caused by this current

  A current carrying loop of wire lies flat o6 lyg.xr1pw:e n a table top. When viewed from above, the current moves aroyg1 lr. x6pw:eund 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 lo:01 aqkbwnyt 6op 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 magnetic field caused by this current, inside thebn6yk 0 tq:1aw loop? The magnetic field

  The SI unit of magnetic fier,b9 en v)oo4t r.0oqfld is the

  1 T is equivalent to4sjl zv 7zeae vaq6.y a0g146dk0oy4t

  The direction of the force on a current-carryingty1z: d*8wkr s6e6hh rp2gve5 wire in a magnetic field is described by 2 yzw 1r5rhhd6 gs6p k8t*ve:ewhich of the following?

  The force on a current-carrying wire in a magnetic fieldxui; 9by1ao, v is the strongest when

  The force on a current-cb8k4ht ))hii/+nu jbharrying wire in a magnetic field is equal to zero when

  A vertical wire carries a current straight up in a regv8a:x4l 3ognub:re9 i/a fod-ion where the magnetic field vector points due north. What is the direction of the resulting force on this curreoa/x93b8orae-4 in:lufvg : dnt?

  A charged particle moves and experiences no magnetic force. From hj m6hpy m +d3b9m8gb/j2n edco/ hd/(this we can conclud/ cj hopm/b h j39e2n6m(gy8dh+mbdd/e that

  A charged particle moves with a constant speed through ;sz )fx xwx7k oyq(p9m y;0,sja region where a uniform magnetic field is present. If the magnet7o x, smkw0)yqs;p(j xxy9fz;ic 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 mazd9pq ; 9xje,his av,v2 5v;uygnetic field. The magnetic force on th 2vdveq paj ihu;9;v,s5xz9y,is particle

  A charged particle is injected into a unifvow+gt62 qwp-y8w-fv0)qt b0 s;l n poorm magnetic field such that its velocity gf 2-0-t+nb t vp0l)w6woqys vw8;qopvector is perpendicular to the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observeki i+fz/il w,o 5o:3oufo:javgyj.8;d traveling in a circular path in a uniform magnetic field. If the particle had been traveling twice as fast, the radius ofoyjaj+:/: uogz8;.lfi of5,3 ivk iow the circular path would be

  A particle carrying a charge of ehz57e55.4zuiatena 1/k jzi +e travels in a circular path in a uniform magnetic field. If instead the particle carried a charge of +2e, 51 ee/ iiazhz .tk5ue 745jzanthe radius of the circular path would have been

  At a particular instant, an electron moves eastward at speed V in a unin0 *;z*-bt e eexpyt ga4-ft4zform magne4ee- ye4-ng t* 0zpfb; ztx*attic field that is directed straight downward. The magnetic force that acts on it is

  An electron has an initial veloci x )7icqqzrno l53 d8l 41fyo:5y1skmlty to the south but is observed to curve upward as the result n318f4175:lqirk qdc5lyzsxmol o )yof a magnetic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a .yv iyv8dhwz:uf,.9 5l-*hs ;h mo psxregion where there is a uniform magnetic field in the +y direction. What is the direction of the magnetic force on the electron? (+x to ri8x5d;wl. fvo9yhp ,.v- z:h is*suymhght, +y up, and +z out of the page.)

  The magnetic field produced by a long straight current-carrying wirih*/ eh:h-gef e is

  At double the distance from a long current-carrying wire, the strength oyi/ nkszepzq.*z 9u5( hci, 1nf the magnetic field produced by that wire dei(ekcn,z u91 /yzzhp5 .s n*qicreases to

  Two long parallel wires placed side-5-lw44 ta7 h svudo/bjby-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 magnetao44w hjb t7 ul-vd5s/ic field at the point exactly midway between the two wires

  Two long parallel wires placed side-by-side on a horizontal table carrykvj, iynrco1l5 7w6 (r identical currenwoiy(ljv5,7r1 c rn k6t straight toward you. From your point of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carrj 25u gi:rgwo)yx(r6:p nrx7ky equal currents. The magnitude of the force between the wires is F. The current in each wire is now doubled. What is the magr x uio gyxnjr(:rw67)pkg 5:2nitude of the new force between the two wires?

  A long straight wire carries current toward the east. A proton moves zy+91nwj(x:ksov e)mn. ws6x toward the east alongside and just south of the wire. What is the dir).xnn9xy:z+o6 wjwv s1 eskm (ection of the force on the proton?

  A wire lying in the plat * 1f(tzbj-uw.fped(ne of the page carries a current toward the bottom of the page. What is the direction of the magnetic force it produces on ane1jt d*( pwtu(bfz -.f 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 tvp(wi )o oc ,3h-1- xflrjx:don a horizontal table. If the wires carrydx,wvj tc1 f :phir-o) -(3oxl current in the same direction,

  Two long parallel wires are placed side-by-side on a horizontal table. If the ok 38of34xtjq wirkq tjo3 83o4xfes carry current in opposite directions,

  Consider two current-carrying circular loops. Both are made from onnpu a0 z/-/a;r+f umfne strand of wirf fma/u anu;0-/+pnzre 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 loop, the magnetic field at the center of the larger loop is

  Consider two current-carrying circular loops. Both 77*77pafy2rdrtn uell 0t ph.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 smallery.0p77upe trl*ta72 h n fr7dl loop, the magnetic moment of the larger loop is

  The maximum torque on a current carrying loop occurs 1jsgoku s 7k*a pu+8e:plt8c)when the angle between the loop's magpsgs j :*tau8 +8oeplk )k1u7cnetic moment and the magnetic field vector is

  When placed askew in a magnetic field, a current carrying loopxew:f ayh(vy2 g*4u7x that is free to rotate in any direction will experience a torque until its magnetic moment ve *e7(ywy vux42:ghfxactor

  What fundamental fact underlies the operation of essentially all electric motorsi,yjz .eiqx+ 0? q,+z0 jy.iexi

  A circular wire loop lies in a horiz km-rnx5 wc0i;ontal 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 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 fick0xni5 m w-;reld?

  In a mass spectrometer a par-vcbky)m3 vpic9 bl -rr*lav 0db ; 7psw0,u/aticle of mass m and charge q is accelerated through a potential difference V and allowed to enter a magnetic fieli, day0r9v;c cblb) u-b/ml kr-*p3 7 w0psavvd 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 particle passing through crossed e+7lw 6h3e/+ t myarayulectric and magnetic fields. The forces exerted by these fields are in opposite directions, and only e+ a/+my6awhrlyu 3t7 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 the north. What direction should the electric field point?

  A 2.0-m wire carrying a curre)ltunbuw n4rkml7o)0 fb:6 e6nt of 0.60 A is oriented parallel to a uniform magneti4b:nwotul) lmf r)6k eb un670c field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10x wm pbq6br)c1os 4l+x47t0c x 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 placesc4r m kbaq);,d in a magnet qab, )srckm4;ic field 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 5vq*oz)jikn 6m long has a mass 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 thv)5j in *qozk6e weight of the rod?

  A stationary proton is 8 e5qjkrhu41*o(1nqs ewy v ,qin a uniform magnetic field of 0.20 T. What is the magnitude of the magnetic force on the proto q (8ehneqvy*kuqosw11r5 ,j4n?

  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 v6e8( 3sppqof $5.0 \times 10^4 \; m/s$ 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 +0/rjt zy09hdverh k/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 travelingd- 9axxgaak)a72 v.mh due 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 witioj;vgf *d06iah5ca5h 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 speed of -qwl.h3fceu 0s fd-pee0o 1) o$8.0 \times 10^6 \; m/s$ 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;gm:a h7kgbps; i* cy* $3.0 \times 10^6 \; m/s$ 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 magnitude of tw9c09b uonf ws 9mh/c2he magnetic field at a distance of 09 f 99b2hwswmuncoc/0.15 m from the wire?

  A high power line carrying 10 ro83u) l*q 1t7sm8mab42rlniacfr6 o 00 A generates what magnetic field at the ground, 10 qrscnm3ti al* 7lamr 8f8 46ro)b1ou2m away?

  How much current must flow for ihhvmk gl-0m26 z1 :vd$1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long straight wire carrying a current of 5ec y*4w (f7tbv.0 A is the mavf4c e(*yt w7bgnitude of the magnetic field due to the wire equal to the strength of the Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents of 10 A:n 4d3 d0z4zun,z o3czbc2v/amurqe( in opposite directions. They are separated by 40 cm. What is the magnetic field in 2,c3r0zduz 4eaz n:/(qbouvzcnmd43 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.xsd)z9wxxy h8.5,rkx 0 A in opposite directions. The wires are separated by 0.20 m. What is the magnetic field midway between xyd h)xrxxz,8w5ks9. the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite direcsoc,ns,w qp em c+/2i.tions. Thpc e,, +c.n iswso2q/me wires are separated by 0.20 m. At what 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 direction. Thtfot(js* 31;- iyop qonldw, 9ey 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 tt otylw(n*s 1pod;q,f -3o j9ihe other wires?

  Two long parallel wires juirgfk9 611uv6y k 9tjr :k1icarry currents of 5.0 A and 8.0 A in the opposite direction. The wires are se 11 u:9fjvkk6ki1j trgyi9r6 uparated by 0.30 m. Find the magnetic force per unit length between the two wires.

  What is the magnetic field at the center of a circhf +/ic);,mg8w hbhdo ular loop of wire of radius 4.0 cm when a current / m w,f8ohdc;bigh+h)of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wwche.pil* ;0q+b (wshire. What magnetic field is produced at the center of thewqchbh+ (i* ls0;pw.e solenoid when a current of 10 A flows?

  A solenoid with 500 turnkn6eb:t 3au; ls is 0.10 m long and carries a current of 4.0 A. What strength of mu: ;kt6e3anbl agnetic field will it have at its center?

  How much current must pass thxuctis(obe9 6 2fv;:p rough a 400 turn coil 4.0 cm long to generate a 1.0-Topc6v (eif u:2x stb9; magnetic field at the center?

  How many turns should a 10-cm long solenoid have if it is to gene73xe+a8qmfj vrate 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 ca2vu w uzb49-wexm6v- zrries 6.0 A if its dimensions are 4.0 cm x 8.0 cmwu49 z v- 6u2vmx-webz?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic fhu+w1poo3 d;dm 6kt 5lield of 0.30 T. The current in the loop is 2.0 A. Whad6m uo3 ltwd5;1oh+ kpt is the magnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of scz+ )4alan4 k) ybbk9cross-sectional 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 jqq)5jr82i e ecurrent of 2.0 A is in a magnetic field of 3.5 T. The loe82) eqijq5r jop 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 wi+ru.x p2 by:o jou- c5fpw22ptre of radius 0.50 m is in a uniform magnetic field of 0.30 T. The p2-o5+2 c ptxjwrpuyfb o: u2.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 j.1 0z,gh xuqwa 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 loo01 guz,qjhw x.p is parallel to the magnetic field?

  A circular wire loop foz3:fj7yckgbl6 c +9jzax t3k*u g ;6of 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 (ch1. dnp;+ojxebarge 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 velocitoxlg+ 2jbx2 z(y $6.9 \times 10^6 \; m/s$ 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 throu4mi-v am2vn7n jsu+ :egh a potential of 1.0 kV and then moves into a magnetic fie4isjmv an7 n-2m:e +vuld of 0.040 T. What is the radius of the proton's resulting orbit?

  A proton is accelerated from rest through 500 V. It enters a magnetii.eg 36kqjma7 q-hx- gc field of 0.30 T oriented perpendicular to its direction of motion. hkag--j36g7mqq .exiDetermine the radius of the path it follows.

  A beam of electrons is accelerated through a potential difference of 10 kV befo9b-/up/ay9zbx3rlv: k dl y 1nbwn,9tre 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 particl/n- wux19 lvr/9a tl:bdyk nb, 3pyz9bes are to be undeflected?