If the north poles of two bar magnets are brought clwsf ,+9 wcmx2krxi4ck di456rose to each other, the magnets wi c 64crwrsx+ iik2mwxf5,dk49ll

  If the south pole of one bar magnet is brought near the north pole, ** 2o.b2o:hx num+hyc-t.yeil qw wq of a second bar magnet, the two magnetn h2w ix.o:y.*+whu2tb eocq-*m,ql ys will

  If a bar magnet is divided into two equal piece i(8uquez63d as,

  The Earth's geographic North Pole is efa s-*2nijex..kl ;kmagnetically a

  The south pole of a magnet pointdo;+ +dtkkll p63hs/nvfaj(,s toward the Earth's

  An electric current przl-qu -cs:rd 9oduces

  Which of the following is ci oryqx f1*(m) u5snmxj--u;correct?

  A vertical wire carries a current straight down. To the east of th .v .wpp /;od;nmq8;b6ysugrsis wire, the magneb6v8opud q/rwg;;;.spyn m .stic field points

  A horizontal wire carries a current straight toward you. From you )v.j ;ojg*mec;so,dur point of view,g *);jjds om ve;uco,. the magnetic field caused by this current

  A current carrying loop of wiqq7a8t n;:as-l8)iqh) l dg-yuwe2r qre lies flat on a table top. When viewed from above, the current moves around the loop in a cg : -l)lh-a t q7q)2; syiq8dqranwu8eounterclockwise 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 table t h045dosrs60gxsp.6j 2x( mnc)sdog iop. When viewed from above, the current mm4g d h)p0in2s.jso650g(xdx sc os6r oves 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 magnetic2i2 19zctxzktjs1v;d field is the

  1 T is equivalent to(ey( n s, syee.wv.io:

  The direction of the force on a current-carrying wire in a magne5vspmue,+ll ; tic field is described by which of the followings l ;lpm+5e,vu?

  The force on a current-carryingpruc9dygf7lfe(e / + 8 wire in a magnetic field is the strongest when

  The force on a current-carrying wire in a magnetic field igvq1ud3rl08kfi; dvye4un; h6y y68d s equal to zero when

  A vertical wire carries a current straight up in a region where the magnetkt -/fv-e d7 b6xa(zwyic field vector points due north. What is the direction of the resultingk -/tb( -7 fweyz6vxda force on this current?

  A charged particle moves and experiences no ma,d z.eis,uk .( d/.pyu iou:wygnetic force. From this we can coni .kp,./i:ezwu d.,(dusouyy clude that

  A charged particle moves with a constant speed e il/ o,pv;)6tyuwvp3.-k uzd through a region where a uniform magnetic field is present. If the magnetic fiet,pyulpi.o/6kz-3v d;e u w)vld points straight upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constant magnetic field. The magnetic foqrmh i abihi3b8 3.*nw(el b28rce on this particqe3 2(*3lairi nhm8bw8 ibbh.le

  A charged particle is injected into a uniform magnetic fielx- w vckcrd dpmg3 b51zdo2z 800cm),od such that its velocity vector is perpendicular to the magnetic field vector. Ignoring the partic0-ozz3 c8mgck b cvxdm) ,dw01dpo25 rle's weight, the particle will

  A charged particle is observed traveling in a circular path in a- 21 syp4lgl9sjcxz9e69ax 6ek2val1 e iz /ka uniform magnetic field. If the particle had been traveling twice as fase2cl-x99eg1 kz6 1 ivl k9jl aes2x4pa/ zysa6t, the radius of the circular path would be

  A particle carrying a charge of +e travels in a circularq7 (bmvi +xs.m path in a uniform magnetic field. If instead the particle carried a chargexivm7s.+ b m(q of +2e, the radius of the circular path would have been

  At a particular instant, an electro9b+tum; k( aaon moves eastward at speed V in a uniform magnetic field that is directed straig(bat mua9k+o; ht downward. The magnetic force that acts on it is

  An electron has an initial velocity to the stvs hcn 2r1.7.-eeviwouth but is observed to curve upward as the result of a magnetic field. The direcrt.s2v1vnecw- eh 7.i tion of the magnetic field is

  An electron moving along the +x axis enter3h5hgkc j98 aexc6)sa5 )mmeu s a region where there is a uniform magnetic field in the +ya359k 6xhu s 8e jh)mac)gemc5 direction. What is the direction of the magnetic force on the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field prodc)q,;0h8w;2owxobkyvx 4 it auced by a long straight current-carrying wire is

  At double the distance from a long current-ca7 sg5lp1e e)5bwgz3:hosr lz3rrying wire, the strength of the magnetic field producedzesrz35gbl:hwg p 513o le)7 s by that wire decreases to

  Two long parallel wires placed side-by-si.kl-irn m:qagb7.e/ tzkix 3- de 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 magnetic field at the point exactly midway be/lz.m n.q : i-7ateikbx-3kgrtween the two wires

  Two long parallel wires placed side-by-side on a horizontal table carry identab z+jkup.eq) k2w-l 5ical current straight towe+u5q-. p)kkz2jablward you. From your point of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal current +;2ymrl.b u:ox/el sbs. The magnitude of the force between the wires is F. Thlo.yr s/;lmeb +b:u 2xe current in each wire is now doubled. What is the magnitude of the new force between the two wires?

  A long straight wire carries currentzd:b9l+k 1g2oiq(sh4hug :ig toward the east. A proton moves toward the ea4k d2l shz:+gg(oi 1:gquhib9st alongside and just south of the wire. What is the direction of the force on the proton?

  A wire lying in the plane of the pa3q p5u/djz1k8 d00ltnsetp t.pru 4j.ge 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 perpendicularly to31qkped t.sj/0nu0t uz.pp5t8 rl d4jward the wire, also in the plane of the page, from your right?

  Two long parallel wires are placed side-by-sier4vtide k9:q8say2zgpef:i3ut2 0*de on a horizontal table. If the wires carry current in the st2er ee20t:i p su3iqayz 8v9*f4gk:d ame direction,

  Two long parallel wires are placed side-by-side on a horekp0p5ytq9 k:fo/oa*6ly q/ tizontal table. If the wires carry curyo0q y:kt9t/f 56pq /akp*eo lrent in opposite directions,

  Consider two current-carrying circular loops. Both 8*dpsmwki0( m are made from one strand of wire and both carry the sm8 dkmp*0 is(wame 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-carrv;7x; hotjy(dm (ix n*ying circular loops. Both are made from one strand of wire and both carry the same current, but7h;t(ijdn*om; y x (xv one 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 current carrying loop occurs when the angle bej+.fo 3r/i ) yfo adg:ye-iaf/tween the loop's magneticj o.:+yao/f e)gydf/ii -ar3f moment and the magnetic field vector is

  When placed askew in a magnetic field, a current carrying+e7 p54e:( ab nio i+d0up(w+ mlqfzea loop that is free to rotate in any direction will experience a torque until its magnetic moment n4 +(zioa+w50embepafp d 7:(q uel +ivector

  What fundamental fact underlies thx qj n4njj7:k.e operation of essentially all electric motors74njjqjxkn: .?

  A circular wire loop li9:f8 ph5zq e6(c crot7fe t vrl)r+rg;j5b)gies in 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 and dips below the horizontal. Which side of the coil tends to lift off of the table because of the torque crpqv8grroflt:5t 7j )fr 5b ihc96ze( +)ecg;aused by the currents interaction with the magnetic field?

  In a mass spectrometer a particle of mass m and ch gofsrw-.-yra i8sb .7arge 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 -yoasr gf i-.8wr.b 7sfield 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 a7w t*lk90d hgnt4 mzb;ymmov98 4 k45fxq7wb charged 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. Inz;v08lw9h m54gbxmt7 y* do w4n q79fkbk 4amt 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 oriented parallelr/oalx- 8fsz: to a uniform magnetic fierza/:lfos8x -ld of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current / 7smnl hs51x2dis df*of 10 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* tekam whr:f9 q 4t3wih8an k:o5-tn2j g:f0s placed in a magnetiq a4tk k hma fhe:t2r90nf:5*s: wnjog it-38wc 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 m long has ih zu65b+tny+sw+n7 i1fn2 dha mass of 0.050 kg and is in a magnetic field of 0.10 T+tz 7n byf ++dh 2swni6n5iu1h. What minimum current in the rod is needed in order for the magnetic force to cancel the weight of the rod?

  A stationary proton is in a univj;h i;jzav e,-,c 9fnform magnetic field of 0.20 T. What is the magnitude of the magnetic force on thee;njfiv v,hc- z9,;j a 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 p 3di1x8s8.xi2 qwahuxl1b sopg-e*-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 a speedybi8b7ot. e z4 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 :5og5hg7s n2uu r-tm mwith 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 with a speed oirc1nn9o n l8: i/g;9.*tgykotu*xwf 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 a speed dkrg,b 1 b99riap3 ypv tu/etr2 1z*(mof $8.0 \times 10^6 \; m/s$ 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 5 iw+9ecfi ve,1)+vdtlu0dh tof $3.0 \times 10^6 \; m/s$ 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 currenty (n dgby25,n qf39rhq of 25 A. What is the magnitude of the magnetic field at a distance oqyf5dh,gq3b2 9(nnry f 0.15 m from the wire?

  A high power line carr5 ,n5 8wpjb3rtd;qs buying 1000 A generates what magnetic field at the ground, 10 ,d8tbu35p b 5q;nrswj m away?

  How much current mustxnt. q7d4cbp27 *m (t .raxrxb j7ggl: 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 straight wire carri0r33,ft z0ba/ tickcying a current of 5.0 A is the magnitude of the magnetic field due to the wire equal to the strength of the Earth's magnetic 0t0tbc,i/ akf z3c3irfield of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents of 10wj .u) *cwadf t */u8j4 zn1se,assm,u A in 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 f.jnsft8)a*sscw u1a,jwz ud* ,m 4u/erom the other?

  Two long parallel wiloe s9ly.ca7bwoued (2g qy d1.7)k /jres carry currents of 20 A and 5.0 A in opposite directions. The wires arsbulc7)j( eaqo g7dy o/dl9ey..w1 k2e separated by 0.20 m. What is the magnetic field midway between the two wires?

  Two long parallel wires carry cu.*h *as5oolhwpwo:* n8axo+ 6zey7zlxv/g j ;rrents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. At what point betwe:*oxs hw7 *zn8.jp*oa e;h+gayo6 /w vz5x ollen the two wires are the contributions from the two wires the same?

  Four long parallel wires each carry 2.0 Ajkms2p vt o7,i m5)k+:tjl,qw in the same direction. They are parallel to the z-axis, and they passmmkt 5t, jvj7)qp+w ,2:ski ol 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 currents of 5.0 A and 8.0 A in - tsgru hd/b/*:c)i6mhoep x(the opposite direction. The wires are separaughim6)xs pt-(/ch*eb /o d:rted by 0.30 m. Find the magnetic force per unit length between the two wires.

  What is the magnetic field at thel h:he7bb66u 0ej6q8hpzy+ kp center of a circular loop of wire of radius 4.0 cm when a current of 2.0 A flows in the wirbz y0hhqjp6+l7 b6epk he 86u:e?

  A solenoid 20 cm long is wounm-owv lvm 9 ,r.9oft;md with 5000 turns of wire. What magnetic field is produced at the center of the solenoid when o;mr -wofv.,vmml t99 a current of 10 A flows?

  A solenoid with 500 thlx/kr4;ig 0iurns is 0.10 m long and carries a current of 4.0 A. What strength g0i;i4k /xhlrof magnetic field will it have at its center?

  How much current must pass through a 400 turn coil 4.4m f/0m0mr3 psyu b-dry02s pc0 cm long to generate a 1.0-T magnetic field at the c03c4 fm0/-rdsp0prmsum 2 byy enter?

  How many turns should a 10-cm long solenoid have if it is to ga n)ao ngn .ry8j-4+u0.phoe .fi8pltenerate 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 carrqjpdb2 i l45(hies 6.0 A ifdl(h5b ij4 2pq its dimensions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in fm6)oeldh,fe 4gg /;ia 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 perpendic ,lh egf/6moie;g)df4ular to the magnetic field?

  A circular loop of wire of cross-sectional i nw,tm075t hc- jm7a:jv xds+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 i 3ifl9o4rln6fz iy3bl f5(41liae, gz s in a magnetic field of 3.5 T. The loop has an area of io3yfrf(af,4li51 z 94nbel l3 izgl6 $0.12 \; m^{2}$ 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 unl7ep /3,3ch usnraah8 iform magnetic field of 0.30 rhc n7eph3/8 usl,3aaT. 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 3ibr/jbzh 8 lxcv4a2) m is in a uniform magnetic field of 0.30 T. The current in the lhbb8x/jaz2)3r cv i4loop 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 ofr,q )c+,wzir+ d5ksxw 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 o2wob cl1:eo4 single-charged 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 with velocity b f .0kp: :5er88foaakpuvjs*$6.9 \times 10^6 \; m/s$ 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 potents,und:)mc6 sf ial of 1.0 kV and then moves into a magnetic fieldscds: u,mfn 6) 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 magnetic j+ 6x1uzqvu+d field of 0.30 T oriented perpendicular to its direction of motion. Determinvdjqz + +1xuu6e the radius of the path it follows.

  A beam of electrons is accelerated through a potential difference of 10 k+gxk660amp ,:,pd pe lb 7wtdlV before entering a velocity selector. If the B-fieag0wl 7ddlp :kxb,p p6+,6mteld 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?