If the north poles of t wi : b1p*jt7t*hf.ndr n0jwd3wo bar magnets are brought close to each other, the magnets willtt1bwjdhj3 d 0*w* n:7.firp n

  If the south pole of one bar magnet is brought near the nort + bx f6rtijnk2p7c:suz /hd:0h pole of a second bar7dn0fpu:2skhi z:b + /trj6cx magnet, the two magnets will

  If a bar magnet is divided into tw.kh000tnt/j :(nmu awigwyk- x.u4 cjo equal pieces,

  The Earth's geographic North e/tj2bem)m ua4 w9;e vPole is magnetically a

  The south pole of a magnet points toward the Earth'syvi 30rql,ds:

  An electric current z-h9 n9lg c):l4 si54 ssxtlo.ydczd(produces

  Which of the following ripv 56b z6f-pis correct?

  A vertical wire carries a current straight down. 6mj69f5: i 3 mgdrnukdTo the east of this wire, the magnetic rfi: 66 kgd95mdmnj3ufield points

  A horizontal wire carries a cutg5 txp/7jxoh; ceeu1;k/-q z rrent straight toward you. From your point of view, the magnetic field caused by thiskhgct//;1eq j5o- xupx;e tz7 current

  A current carrying loop of wire lies flat on a table top. When viewed from 1w -l/*nf vedcabove, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic fie c-e/ wfv*ld1nld caused by this current, outside the loop? The magnetic field

  A current carrying circular loop of wire lies flat on a 90 l7lv.v7 uyho t/;3qnpstuhtable top. When viewed from above, the current moves around the loop in a counterclockwise sense. What is the directioq/vyh7 tlo 3 nu;h0l.uvs 7tp9n of the magnetic field caused by this current, inside the loop? The magnetic field

  The SI unit of magnetic field is tw ok:oms771b hhe

  1 T is equivalent to ;(p+9rzwppr +zhvjr2

  The direction of the force on a currejfcn4aploc/j r: i:3llf9s . 8nt-carrying wire in a magnetic field is described by which of the followj :s:rla p843l.ljcnfo cif9/ing?

  The force on a current-carrying wire in a magnetic field is the strongest0 sq3vasxl hs4ak8 /-r when

  The force on a current-carrying wire in a *1i(jx9u 6jik2pal mv 8z+swamagnetic field is equal to zero when

  A vertical wire carries a current straight up in a region where the6l5yp8es n56vt7f 9,gexj yzxr p a.r5 magnetic field vector points g 86ey.69fynj7t,xrr5e5ls 5z p xpva due north. What is the direction of the resulting force on this current?

  A charged particle moves and experiences no magnetic force. From th3vbv121 psjqx; ,su6qca b*tzis we can conclude t;3,b bu6pq1 qcsvazj1s *2xv that

  A charged particle moves with a constant speed through a region wherg x y4.gmdilr,s5,5sze a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting on this particle will5xm s5iyd ,., gsl4zgr be maximum when the particle moves

  A charged particle moves across a- 8zlr gvy xg(0*(hhmx constant magnetic field. The magnetic force onh0x g- lv(hmzg* 8(xyr this particle

  A charged particle is injectes,.c;ufr v(k ud into a uniform magnetic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring t.v uu(s,;kcrf he particle's weight, the particle will

  A charged particle is observed traveling in a cirxlpd9-o w3ey 1cular path in a uniform magnetic field.3 1d9eoyxpwl- If the 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 cirbl8n gscnt f8o p,vg89qe,9c9cular path in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of the circular patf8 9, vlsbgntopg,9cnc 88e q9h would have been

  At a particular instant, an electron ma 6sfes6nm5;joves eastward at speed V in a uniform magnetic field that is directed straight downward. The m; m5e6f6sajnsagnetic force that acts on it is

  An electron has an iniu+0p5 .vg(na 8s hgaqctial velocity to the south but is observed to curve upward as the rha85sng.+aqu0 (g pcv esult of a magnetic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a region where thpnhi 5d-y8l o1ere is a uniform magnetic field in the +y direction. What is the direction of the magnetic l o-i8 5ydnh1pforce on the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field producfe vtzspb pm2c2q510j2nn 7 x7ed by a long straight current-carrying wire is

  At double the distance from a long current-carrying wire, the strength 35rcm;jz8g mcqbtw7;8u gdy -zo+y8 sof the magnetic field produced byyyzo7b388- u+cz8m;;gmjgts 5 cdw rq that wire decreases to

  Two long parallel wires placed side-emu l*)9 zn61lg/jl;+fab jtlby-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, t+ulme; * jbzlglj96l ) at1n/fhe magnetic field at the point exactly midway between the two wires

  Two long parallel wires placed side-by-sidu gwiz zx303d)xryak8ug 8 r36e on a horizontal table carry identical current straight toward you. From youg80aiukr3xg33z y zw)xr6u8 d r point of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnitude of the force betweer6uvx 8p.dgl4 n the wires is F. The current in each wire is now doubled. Whg px4v6ru. ld8at is the magnitude of the new force between the two wires?

  A long straight wire carries currums.c, 7j-p*ecwvuj 0ent toward the east. A proton moves toward the east alongside and epsuc7. j j,cu-*wvm0just south of the wire. What is the direction of the force on the proton?

  A wire lying in the plane of the page *6okit7d zy 37 va;qktcarries a current toward the bottom of the page. What is the direckaq3i ;ot7vy6z *k 7dttion 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-e2dz d 9pz)hn )1:zubbside on a horizontal table. If the wires car:92zn1zdzbd) b h)upery current in the same direction,

  Two long parallel wir .rq9 9gg2num3o owl.aes are placed side-by-side on a horizontal table. If the wires2gan.w 9olr.3 9gouq m carry current in opposite directions,

  Consider two current-carrying circular loops. Both are made from one stran (rnrf t+.yx*s+pa,p ed of wire and both carry the same current, but one has twic srprpx ne,ay++*.tf( e 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 are madi -zf(/ qyzbk/z1hpk0 frup 4(e from one strand of wire and both carry the same current, but one fz0k izhrp(qp f uk/4yb-/1z(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 a c/ ippmvj a.u-;urrent carrying loop occurs when the angle between the loop'sjmpiv/pu-a. ; magnetic moment and the magnetic field vector is

  When placed askew in a magnetic field, a current carrying loop that is fp.l* mkq21b3lsqos 3xu06m ,peso. bgree to rotate in any direction will experience a torque until its magnetic mom,q.k3boe30lpso b2qgx s1 sl6m pu*.ment vector

  What fundamental fact underlies the opervfl6b2 9hw -hxb7rhg* ation of essentially all electric motors?h hwb9*vg26h7flxr-b

  A circular wire loop lies ipv 5;t rm*f svdz(a9j;n 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 the north an (rdv9t a;pzsjf;vm5* d 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 pary;8qmeeesa33:0s :rnewk -article of mass m and charge q is accelerated 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 aea:qemw ey-n38;e:sks r3a r0n 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 crossedf jshve843g- u electric and magnetic fields. The forces exerted by these fields are in opposite directions, and only particles8jg3s-ufv 4he 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 current of 0.60 A i// sbew7e(t 4ojxg s4as oriented parallel to a uniform magnetic fie /x(e/wbeato 4g ssj47ld of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a dirt6af6vlm9 r;xection 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 carryi/ lkby.ljd- k+ng 5.0 A when it is placed in a magnetic field of 0.020 T? The wireydb.kj+ -lkl/ 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 iscswkw9q qmu/.d )1 t5knw h6q: 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/kd5wh1.w nw k mtcu69sqq :)q weight of the rod?

  A stationary proton is in a uniform magnetic field of 0.20 T. What is ti sz o-j9trb34d)ox)hhe magnitude of the magnetic force on b- r d43ihoz )soj)xt9the 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 speob3ra c8mwy+ry, q ..eed 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 speesq5ag8jhk 0 /,jlbg h3d 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 witvrk +t-a*wk:)e 6f8 evpm9 fboh 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 withb njre 5tim -e3y0j/lf+q:ms5 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 skl : k/l(4acpz+bxqj;peed 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 e1g8-rhh3e qsp jag +qc12w n9$3.0 \times 10^6 \; m/s$ 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 carri30gob b d4:1n/mbup ) btoxlr0es a current of 25 A. What is the magnitude of the magnetic field at a0b bd gx )o1:n4 bobl/putr3m0 distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what ;xl0pg.qxwlr ncb/s - nc79k4magnetic field at the ground, 1 g-b7nn4sckcwx.p; lrlxq0 9 /0 m away?

  How much current must flow forb grw8p0miqhr,icel,m ) a j6.+ed y9- $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long str wgomyu 5p w)vw7)h9(jaight wire carrying a current of 5.0 A is the magnitude of the magnetic field due to the wirew gy5u h )(ojm7vwwp9) 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 in opposite directions. They +ihb2l8h sq5 care separated by 40 cm. What is tbq c8 ih5+2lhshe 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 in oppog, t/b6z2f7hmnld 2q39o fes . bmy:jbsite directions. The wires are separated by 0.20 m. m/bbe sjq92z7:ym 6blof,d.tghn3f2What is the magnetic field midway between the two wires?

  Two long parallel wirexqua.iqm*1w)k 5 b,sl3 qt)wcs carry currents of 20 A and 5.0 A in opposite directions. sc5mib,)u w)*1qxa3.qk tqlw The 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. They are pf)i(hv-3 nb4o(uel n mi- nk8/al(fni-egj7aarallel to the z-axis, and they pass through the corners of a square of side 4.0 cm positioned in the x-yjiin vo-h8 (-nek4/gl3)la efnmn ibu 7-a( (f plane. What magnetic field does one of the wires experience due to the other wires?

  Two long parallel wires carry currents of 5.0 A and 8.0 A in the oppositz 3jm*2 4gz*3ojzgnqj e direction. The wires are 3 32gz*j4*zmnjzo qgjseparated by 0.30 m. Find the magnetic force per unit length between the two wires.

  What is the magnetic field at the cen e.t00u1 h .-bofbrgd,mb e8lqter of a circular loop of wire of radius 4.0 cm when a current of 2.0 A flows in the w-e.0 o0qbflb gut1d e8mbh r.,ire?

  A solenoid 20 cm long is wound with e)anpm/4dvs q f552 s ,rwba*q5000 turns of wire. What magnetic field is produ*a q2qps4e5bdfv)w, an 5s rm/ced at the center of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carries a current ofm:t lxw,ben( - 4.0 A. What strength of magnetic field will it have at its centx lbwm:e,nt-( er?

  How much current must pasi-fwvh 3qq n,o5b-kb3bw kt+/s through a 400 turn coil 4.0 cm long to generate a 1.0-T magnetic field at the centq3fq n-+w o5khkb3/bwbti,-v er?

  How many turns should a 10-cm long solenoid have if i pm a8i 8r/xwmfe1s1b6t is to generate a $1.5 \times 10^{-3} \; T$ magnetic field on 1.0 A of current?

  What is the magnetic moment ofwme aq/ : 1d3fjk,po,ep3z e.w a rectangular loop of 120 turns that carries 6.0 A if its dimke /:1owaqm3pjwzd,,f3 e e .pensions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic field of 055ts(cjpk 89zz xbo7 u.30 T. The c5s zx zj8 u7tbcp5o9(kurrent in the loop is 2.0 A. What is the magnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-senu 0rv/a;k 11kv5decb*xatb5ctional 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 in a magnetic fiea 2qwk0w869ebonxv g )ld of 3.5 T. The loop has an area oa0 qn9 ewvg6wo)k2b8 xf $0.12 \; m^{2}$ 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 raqp*,7p ozwgjap hl ; fbo +nld,/)51alnx t:p4dius 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 torqueb qg,l nw7op p,a/5pjx ; +d n*p:lot4h1)azfl when the plane of the loop is parallel to the magnetic field?

  A circular loop of wire of radius 0.50 m5120f9 thd) +wb,i tramuldpq2o6lzr is in a uniform magnetic field of 0.30 T. Th9twta r0i +,loz2f2)qd5b1lmuh6r d pe 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 wire loop of ar/2n-vwogr 2fg. 2ain aea $0.25 \; m^{2}$ 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 speedi 3oio.p l1ab;q5y rgl* d,:lx 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 vel-lc emba :ccll 3,7i.locity $6.9 \times 10^6 \; m/s$ 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 h vs/q-zdudx8m f,u2-1.0 kV and then moves into a magnetic field of 0.0408 hqdxz2v,um-s-ufd/ T. What is the radius of the proton's resulting orbit?

  A proton is accelerated from rest through 500 V. It enters a magnet:+ov* hmtd1g 82uesoh1*m bt cic field of 0.30 T oriented perpendicular to its direction of motion. Determine the rade+ vct8h* ghdmob:*t2os um11ius of the path it follows.

  A beam of electrons is accelerated thp7bfbu j (x3f0min)u.rough a potential difference of 10 kV before entering a velocity selector. If the B-field of the velocity selector haf). bpb iu0j(m3 7unxfs a value of 0.010 T, what value of the E-field is required if the particles are to be undeflected?