If the north poles of two bar magnets are brought close to each other, thn*cjrca. w. kxu 7 .2 l.:ip;+dl 9(cjdeudjume magnets will maxplndj*ej.cw.c u 7i.( juud+c:rk9d;2l.

  If the south pole of one bar magnet is brought near tt4vt6yvquv;) he north pole of a second bar magnet, the two magvyt;qv6vt ) 4unets will

  If a bar magnet is divided into two equal piec).mu6ud. wp, 5vh2gjmqnev k6 es,

  The Earth's geographlv en vc60,o7t(zloo:ic North Pole is magnetically a

  The south pole of a magne8qc)jdm5bd* ft points toward the Earth's

  An electric current 51yoxco/-hr2hlez3pb wsbm l-*m. n )produces

  Which of the following s-w;e f-o y2nfis correct?

  A vertical wire carries a curr0lcl*48 traif ent straight down. To the east of this wire, the magnetic field f8tlri 4 0*clapoints

  A horizontal wire carries a current straight toward you. From a t1t1;raycqtd, f :*xc0u p9pyour point of view, the ma1ut 0 pxtatqrc c,; *:pafd9y1gnetic field caused by this current

  A current carrying loop of wire /yncgdipfeq0(/t2bb h c 5 r92lies flat on a table top. When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direct0dreq/2(h9y tibg bp25cnf /cion of the magnetic field caused by this current, outside the loop? The magnetic field

  A current carrying cir +8: w.3datu h.s 9 ;r4xmi)pl2wvyia:zk qszvcular loop of wire lies flat on a table top. When viewed from above, the current movesx: pdii+.8:.zwsmql wvvau 2 ht 4k)ya;srz93 around the loop in a counterclockwise sense. What is the direction of the magnetic field caused by this current, inside the loop? The magnetic field

  The SI unit of magnetic fieldrlq9erjatn5 x 6kj zjg*1 6;i+ is the

  1 T is equivalent to3iv 7sbzeosq k3l)7n; xfp6bd9*1edt

  The direction of the force on a current-carrying wire in a ohb+ p.15t v) rlflf9pmagnetic field is described by which ofv9blp f+)fp .5trlho1 the following?

  The force on a current-carrying wire in a magnetic fi-d1 giip0vge- eld is the strongest when

  The force on a current-carrying wire iz6n 7fe4 vpyw)m )naq2n a magnetic field is equal to zero when

  A vertical wire carries a cu0z) vmxm e;-*y)zen ukrrent straight up in a region where the magnetic field vector points due north. What is the direction of the resulting force on this c;n0 ekzu *x)v- )ymemzurrent?

  A charged particle mov8kn 1wt 1x+hd.qnj+9qi9oaqz es and experiences no magnetic force. From this we can conclude tha.x n8w9ao 19tn hjdqki z+1q+qt

  A charged particle moves with a constant sp.n +gwn;,hcupeed through a region where a uniform magnetic field is pnnw,c+u p .;hgresent. If the magnetic field points straight upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constaqs4uun+ tdytc , b(2j/q dyw-:7c8tjont magnetic field. The magnetic force on d /,t47 std yujb:oc+2njw-yq(tucq 8 this particle

  A charged particle is injected into a uniform)u8yy7gio) g u0s p(mo magnetic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring0yosugm8 ip)ug(y )7o the particle's weight, the particle will

  A charged particle is observed traveling in a circular path in a uniform mau; hoc j m;iobb;g7,y8u8(sv tgnetic field. If the particle had bee 8v(sjohm7oi ub;c;8b ,yg;utn traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e travels in a circular path in a uniform m)xcqg.tz)i. sagnetic field. If instead t .is. z)qtgcx)he particle carried a charge of +2e, the radius of the circular path would have been

  At a particular instant, an electron moves eastward at speed V in 7;s*wlwy aspbta/2c2jrf ; k:a uniform magnetic field that is directed straight downward. The magnetic:2 /jt* asklyc; f;swabw2p7 r force that acts on it is

  An electron has an initial velocity to the south but is observed to curve u/ifr6n,jr5i 4xd3qk z pward as the result of a magnetic field. The direction of the magnetqd6i4r/izf3 j kr5n,xic field is

  An electron moving along the +x axis enterm( fsctxd4 95ss a region where there is a uniform magnetic field in the +y direction. What is thfsx4ds9(m tc 5e direction of the magnetic force on the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field producorpb +)jc;xrsrn/.prcppkb1w8n 0-: ed by a long straight current-carrying wire is

  At double the distanc6 zge*qbugvsm y,4:ilze :t91e from a long current-carrying wire, the strength of the magnetic field produced by tm slge:v zzte by:qg*i619,4 uhat wire decreases to

  Two long parallel wires placed sia xg.)guc+1q jde-by-side on a horizontal table carry identical size currents in opposite directions. The wire on your right carries current toward you, and the wi.qag1u cg+)xj re 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 side-by-side on a ho/t 4b :1qgjpol5 b ql:j)yvlm3rizontal table carry identical current straight toward you. From your point of view, the magnetic field at g/vtm:qo:l qy3 )p4llj51bjb the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnitude of the force be1xk, oq 8f;6fbwv;n-i iem 2cctween the wires is F. The current in each wire is now doubledf,1co nb ;;ewmikf8q- ci6 2xv. What is the magnitude of the new force between the two wires?

  A long straight wire carries current towar4 d+syk 3ju u7d/6ixtid the east. A proton moves toward the east alongside and76iu/ik s3dxju+y4 td just south of the wire. What is the direction of the force on the proton?

  A wire lying in the pom9q; q+2lddu,(n qzh d8v3stlane of the page carries a current toward the bottom of the page. What is the direction of the magnetic force it produces on an electron that is moving pez sd tnuq2+8;lhqd3qvm, 9o(drpendicularly 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 nm0(rxd+ al0e. If the wires carry current in t+(n lxemdr00 ahe same direction,

  Two long parallel wires are m8p) lydyd ;1eplaced side-by-side on a horizontal table. If the wires carryde1yp) d8;lym current in opposite directions,

  Consider two current-carrying circular loops.*4ac/)ck)rj wrd;bv i 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 field at the center of the smaller loop, the magnetic field at thi)kd c rw4;vr *cbja/)e center of the larger loop is

  Consider two current-carryinv15pa(rp co )gg circular 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 apoc5 (pvrg)1 the smaller loop, the magnetic moment of the larger loop is

  The maximum torque o,ct h aj:b(4y49m9l g;pgjmkin a current carrying loop occurs when the angle between the loop's y, jil9 am4;4hm: cjptg(bg9kmagnetic moment and the magnetic field vector is

  When placed askew in a magnetic ftbcdeatbegvc*k75 b/:(63i.aua co( ield, a current carrying loop that is free to rotate in any directioncbt*e i5 (at(bc agb 7:vd6ao.3ueck/ will experience a torque until its magnetic moment vector

  What fundamental fact unatdq -r;nb5u4amu6zr , *3n xxderlies the operation of essentially all electric motors?6a5n x,rur n-x bquza* d;tm43

  A circular wire loop lies in a horiky/jc v 9uwk7h;;jbg-sc dd43zontal 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 mdcbd;w/3j yc-4k;7 j9 gvs uhkagnetic field?

  In a mass spectrometer a particle of mass m and charge q is accele8a1-evk tv;3ohlf p:i rated 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 u1liv;thfp:a-k3eo 8vniform 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 2y:znluov.l2osm *7d 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 straight line. In the following, disregard the magnitudes of the fields. In a velocity selec .2monsv zloyud7l2 *:tor, 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 1:ld:(s)io- ntl qkb*olu)hbcurrent of 0.60 A is oriented parallel to a uniform magnetic finu-sl):h oo :(1b)btd *llqikeld of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of uw43q6 9yhc *lmfim/c10 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 st)ieh/1qssfvlghznzy *e/ 52 5raight wire carrying 5.0 A when it is placed in a magnetic field of 0.020 T? The wire makes an angn2* / h 55sqsve1h) /yezfgizlle of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long has a mass of 0.050 kg4g sp 1i4c4mu vsj7k1j90ouuz72 kxjx and is in a magnetic field of 0.10 T. What minimum current in the rod is needed ink xu4u4s70 2x4zj 9pj su koivc17mgj1 order for the magnetic force to cancel the weight of the rod?

  A stationary proton is in a uniform magnetic field of 0.20 T. W,zzv*v*l s3yy hat is the magnitude of the magnetzv*, 3yyzls*vic 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 zp/7 gb v s2th d pps:nobpw.9)2yvm-8speed 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 h ,gs9nfqps8n-;y/81dbu o x ia 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 stcgswd /9 js0.9x-oy*zo s+ wrpeed $4.0 \times 10^5 \; m/s$ 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 avz19w plv.dh;pzv mm /hc-,9speed 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 s/l ypxi2 c6u:jj,bofu3:2 rsjpeed 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 speedx txu (/4bty9s y1if/x 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/o40w9b b m 9r+9idse5sv jjbn wire carries a current of 25 A. What is the magnitude of the majs/rej4v9bbw0i+ds b9 o 59nmgnetic field at a distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magneti6b8gy d gtx x6sxt)h6/c field at the ground, 10 m awg dx6/h8)b xygt6 t6xsay?

  How much current must flo1:1rwocl71y+frk )dw m 7kciqif,d;yd / ii5ew 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 straight wire carrying a currentf g03kxg, ro3jt5c,o o of 5.0 A is the magnitude of the magnetic field due to the wire equal to the strength of the Earth's magnerj, cgtg3fkoo0o3,x 5 tic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents of 10 A in opposite r bk+t9a9oc88z z fp9x94gjhk directions. They are separated by 40 cm. What is the magnetic field in the plane xrzb89acko4 z9t j9h9gfp+ 8k 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 2e 3eq37bbz co9zuhw abbl)iy4y9,2s00 A and 5.0 A in opposite directions. The wires o,)hyzcue37 ebwl 0ab s94ib 3zbyq 92are separated by 0.20 m. What is the magnetic field midway between the two wires?

  Two long parallel wires carry currents xp+za1 ewkb :4cr 4j-(zqe+ewof 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. At what point between the two wires are the contributions from a4z1 ez4qbejrp-(ww:k ex+c +the two wires the same?

  Four long parallel wires each carry 2.0 A in the same dirx wp: 0e.vbxw(ection. They are parallel to the z-xp:x0. ewwv(b 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 wires?

  Two long parallel wires carry curr ,z e:hjll ) om./,ca:nn;riyeents 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 lengtno:l /n,jm;ae eirh.)l :y ,czh between the two wires.

  What is the magnetic field at the center ow q1;bw6f x jpd8s9t7e 9wr,nef a circular loop of wire of radius 4.0 cm when a current of 2.0 A flows in th8 n ;sdb7w9per wq9tf e61x,jwe wire?

  A solenoid 20 cm long is wound w* )a /-jr ivzn*3 j749aluy ekxwds3gtith 5000 turns of wire. What magnetic field is produced at the center of gv dey /jz9swar7 ku-xji)tna 4l*3 3*the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and ca vhdqp 9lrg,;snq 4d*-rries a current of 4.0 A. What strength of magne-vrdd;*,gh nps q4lq9tic field will it have at its center?

  How much current must pass through a 400 turn coil.0har91cf5q di k v3kn 4.0 cm long to generate a 1.0-T magnetic 3 qnk1h ac 0.kdr9v5fifield at the center?

  How many turns should a 10-cm long solenoid have if it is to g4wde+ wb .q,+ni uk4w5ttd3xo enerate 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 t3nehi jl w;0(dhat carries 6.0 A if its dimensions are 4.0 cm x 8.;l0ie d j3nh(w0 cm?

  A circular loop of wire of radius 0.50 m is in hu.dmo )nxs7fr44 +mza uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. 4 mur7.no )4fzs+xdmhWhat is the magnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-secf)yhit8m )l 3ational 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 cu 0tr qw cifqmoslo/vj8 b)(84b;;fg-2gj; lt qrrent of 2.0 A is in a magnetic field of 3.5 T. The loop has an ol/8 qr;4 ctoj 0t gq;f)j2imb(gs8v lfw; q-barea 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 0.5s+q)ht;n)6frp4jsfb 5 njc2 n0 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 parallel tt 4jfs+)n;5b)csnq 6pfj r2n ho the magnetic field?

  A circular loop of wire of radius 0.50 m is in a uniform magne54nt5ngn 94feks:zsw tic field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the planst 4g fw9nsn:en545zk e of the loop is parallel to the magnetic field?

  A circular wire loop of areos5 wpgv(n)t ir;7d1aa $0.25 \; m^{2}$ 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-njy27nv j22rrcharged 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 witk00 l7rkxc+km.oy;)pe 3qib22k elm zh 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 tseeh0i. d+j)x vs7dg0t1n4fw hen moves into a magnetic field of 0.040 T. What is the radius of thn 0x ege7dis0) +d 4sjfv.w1hte proton's resulting orbit?

  A proton is accelerated from rest through s 31n u4:5czgxaxkvy c4czz*6500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its directg:zcx z*ksu4a5 3cnv yx 61cz4ion of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potenti00 (ctcq; l sig;a8pbhal difference of 10 kV before entering a velocity selector. If the B-field of the velocity selector has a lh0c;;0tacspb g i8q(value of 0.010 T, what value of the E-field is required if the particles are to be undeflected?