If the north poles of two bar magnets are brought close to each other, the1 x0dmosj1lb2 magnets wil1d1 sx0m olb2jl

  If the south pole of u4 :mr 6nz6wdu)4leqnlg z 21b ,mls/none bar magnet is brought near the north pole of a second bar magnet, the two magnets 4znmmru 2zs :wg 6ue14)b /6nlldqln, will

  If a bar magnet is divided into two hp;2p ,4cq;ki(zg3mp 2)rpqbp bzn/mequal pieces,

  The Earth's geographic North Pole issdd/5d1a j oeg3 mq bdd+,xe6 jpop(31 magnetically a

  The south pole of a ma( d, 2q/ycakg9z k msr5g+zm.xgnet points toward the Earth's

  An electric current ij;kw/2cfrhm5 mm y kn0negn :58( g8wproduces

  Which of the following ap:xea;ntf;wo4 m )y *is correct?

  A vertical wire carr-.:k)s . 1 /gfzu 8qbvzbqiquzies a current straight down. To the east of this wire, the magnetic fiv/q1zf 8.bz qk:qs.i )zgub u-eld points

  A horizontal wire carries a current stqlxr 2/ 9xg2:kedja(b raight toward you. From your point of view, thaxj92rx/ 2:l q b(gkede magnetic field caused by this current

  A current carrying loop of wire lies flat on a table top. When viewed froas +)+vck1qs rm above, the current moves around the loop in a counterclockwise sense. What is t q sscakv)r+1+he 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 /igmv+ m: jc7l1g f bos/(b6ssbhp0s4a table top. When viewed from above, the currh6vss g71p+cfm:(/bo /mj 0 bl4sbis gent moves 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 field is ap k3j6 0l6zi0oa+ytqthe

  1 T is equivalent to 73el +scp(dgs

  The direction of the force on a current-carrying wire in a magnetic field is 2 di7j)nmw gnbhhnc0u w 765t2described by wj)udi wh g 5267chnnn b27wt0mhich of the following?

  The force on a current-carrying wire in a magneti* 2:s3w ojjyup.pi:- cazz)xh c field is the strongest when

  The force on a currenxj7yo3 vdef 5 /fjk4s sclu(.,t-carrying wire in a magnetic field is equal to zero when

  A vertical wire carrie42 tnn yyhagd2 n..;3qkjf,nds a current straight up in a region where the magnetic field vector points due north. What is the yn ;fan43jn.h, .2 gdykndtq2direction of the resulting force on this current?

  A charged particle moves and experiences no magnetic force. From this 2:dehxquyp, 8 we can conc: ,dxqye8p2uh lude that

  A charged particle moves with a qwq (ok1 v +h)epzy)z47:lsg pconstant speed through a region where a uniform magnetic field is present. If the magnetic field points straightq4ykz s)wgvpohep q(7z+:)l1 upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a con eoc h2erz:wkl(i0/g1stant magnetic field. The magnetic force on this pw/2h1 ri0geo(kczle :article

  A charged particle is injected into a uniform magnetic field such that its dq*q,m+p(zhx4:mpve jj+zo )velocity vector is perpendicular to the magnetic field vector. Ignoring the particle's weight, the partic,jqx z+* o:mp4jpmqz )e+dh (vle will

  A charged particle is observed traveling in a circular path in6-w, -vuv1ukc; m35ugx59qzuzazku o a uniform magnetic- -a3qgxuo z1u zuck95v; k uvu5,wz6m field. If the particle had been traveling twice as fast, the radius of the circular path would be

  A particle carrying a chyphpr6a )k5f0 arge of +e travels in a circular path in a uniform magnetic field. If instead the particle carried a chargef5)p 6p0 ayhrk of +2e, the radius of the circular path would have been

  At a particular instant, an electron moves eastward at speed V in a uniform 2/2uapaf 8ii jmagnetic field aaj22ifpu8i/ that is directed straight downward. The magnetic force that acts on it is

  An electron has an initial velocityq-a 4(t8vm tt(m*q u b,qay0dv to the south but is observed to curve upward as the resultu,mvty(aq qb0*4(da m8v qt t- of a magnetic field. The direction of the magnetic field is

  An electron moving along the +x axis entev9 mfj l/kz*sbeb5k7 h55qr9yrs 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 t5kfvj yq9 h*9zbre7 skb5/5lmhe page.)

  The magnetic field produced by a long straightdp5ptoy1d 9fuu. .fh7 current-carrying wire is

  At double the distance from a long current-carrying wiy4 -p fmgcz-f;cyvg3)re, the strength of the magnetic field produced by that wgp gf3 vcm-z;-ycy 4)fire decreases to

  Two long parallel wires placed side-by-side on a horizontal table carry )l5cly.n4lsl 9-vm eeidentical size currents in opposite directions. The wire on your right carries current toward you, and the wire on your left carries current away from youv -mnl.l9ylese)l 54c. 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 horizontal table carry identica; kwg7i1( juvpl current sjwv1 p; 7u(gkitraight toward you. From your point of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal currents. Thy xx6: gw,ay.ce 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 the. wgy,6:xx yac two wires?

  A long straight wire carries current toward the east. A proton moves toward thcew s :2d-v5zce east alongside and just south of the v5 secdw :-z2cwire. What is the direction of the force on the proton?

  A wire lying in the plane of the page carries a curreny /::k 0pvnyo8*bu.cvxo4jhdqrl+ 8 zt toward the bottom of the page. What is the direction of the magnetic force it produces on an electron that is moving perpendicularly toward the wire, also in the plane of the: 4v+ykn*8q/lp.8bc vrdu:j 0yz h oox page, from your right?

  Two long parallel wires are placed side-by-side on a horizont-rcr2cb ,2b vsal table. If the wires cac -r2bvs,cbr 2rry current in the same direction,

  Two long parallel wires are placed side-by-sif9po:o;psv33g be3 fjde on a horizontal table. If the wires caps3f:ge;39jv 3pfo o brry current in opposite directions,

  Consider two current-carrying circular k:r5vqwzj 1(cloops. 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 the center of the largk1 (wv5crjqz: er loop is

  Consider two current-carrying circular loops. Both are made frompes ogr u255:i 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 thei255 rops: geu larger loop is

  The maximum torque on a current carrying lo 1wb4sm4zoh q3op occurs when the angle between the loop's magneticmq1 4 3zbhsw4o moment and the magnetic field vector is

  When placed askew in a magnetic field, a cuxg5uq9)b1dggp. 9i x orrent carrying loop that is free to rpg19dx g9og5iq.bux )otate in any direction will experience a torque until its magnetic moment vector

  What fundamental fact underlies the operation of essentially all electric ouxfs4jgis qx* r34 38motors3x8j r*4suxg ofq43i s?

  A circular wire loop lies in a horizontal p: np0-sb,kkdh lane on a table and carries current in a counterclockwi -s,0knhp db:kse 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 field?

  In a mass spectrometer a particle of mass .pgr 4 0 6k3scup:/qqineflw) 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 :q)r gq036skneppw4i .l / ufcR. 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 +;wyj .eyyz,fn,cpz ,a 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 , zy.eny j,cw+pf,yz;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 oriented u(7 bw (11 qavlow;a16ikzof tparallel to a uniform magnetaq6kwoa(1ol11fb u7;w ( tivzic field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a d1vj/hq i/ dk4/ g p6u odxk;btzq.y7j0irection 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 wir1k9g edez. 9rh9k5;(uyrlm tre carrying 5.0 A when it is placed in a magnetic field of 0.020 T? The95gu9he1 d m yerr;l9rk.tzk( 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 fqu ct 0o d-1+r0c8br5)k6hbdb( b qtnjield of 0.10 T. What mt00dbk t5ob - 1h6 dcu)brn+jqcq(rb8 inimum 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 u,azn) *v1j6 d0shv g,pa )slkkniform magnetic field of 0.20 T. What is the magnitude of the magnetic force on th6ap ,vjngvskazl*)h )0 d,1s ke 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 spee4/v:oe)9f/jhvkj *ga rq 5vwed 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 spee f3e12*zhcezb d 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 speed 8w*y0idgih;f $4.0 \times 10^5 \; m/s$ 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 (r80ts,icy hp:t0g5 m5k,qm pt+gzv g 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 p.r( r2ma /kky;;x s)jxoig4sa 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 speed8ww0 gf d6rdv) 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 wire carries a current of 25 A. What is the magnitude o;sggs 0h 4)szrf the magnetic field at a distance gz)0s;sgr 4hs of 0.15 m from the wire?

  A high power line carrying 1000 A generates wrf upf4f ;r,f68pin 2ahat magnetic field at the ground, 1pp;,6 fnr8r afif2f4u0 m away?

  How much current mus9 oee:* 2)mv td*dx6jn os:f+luqyvi56,vsl zt 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 carrying a current of 5.0 A eew5m9p h7yx;6j +eyzis the magnitude +59y w;m zej6pyxhee7of 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 cu hb aw8 scsu7 6*:htesw.fk2d94vcrq2rrents of 10 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 froqf:.cdbuh sst9ca*7khr4v2s w 8e 2w6m the other?

  Two long parallel wires carry currents of 20 A and 5.0 A in oppo hk9dfm3 zh95dzane96 site directions. The wires are separated by 0.20 m. What is the magneti3 fd9z 59nze96kh mahdc field midway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite directoww w*5,h,*kpecm0 9va.ar qeions. The wires are separated by 0.20 m. At what point between the two wires are the contributions from the two wires areckv w.wwop5,eh9m0*q* , a the same?

  Four long parallel wires each carry 2.0 A in the same dir(,2k7)m2e tr zt e0tgp-xqsb0k3 zxcqection. 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 wirekxex0t qzqtz, b(e3ct-) 2g 0 rsp2mk7s experience due to the other wires?

  Two long parallel wires carry current9y8(kvs myc09 ez or,ts of 5.0 A and 8.0 A in the opposite direction. The wires are sepa8yr0(,oe c yst mzk99vrated 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 circular loop of wire of radiucljm r)b273swtimay+s 2 t4s 1s 4.0 cm when a current of 22mm 2ls+41b staj7r)y3 siw tc.0 A flows in the wire?

  A solenoid 20 cm long is wound witstrl3d9h *s5j h 5000 turns of wire. What magnetic field is produced at the center of the solenoid when a ct3ls*j9dh sr5 urrent of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carries a current of 3n6mf w86u eq. 6erral4.0 A. What strength of magnetic field will it have at its cl 3m.eun6a e6 8frw6qrenter?

  How much current must pass through a 400 turn coil 4.ut y2xv-xa2 8,i *uomg0 cm long to generate a 1.0-T magnetic t8o ygmxx2u -,auiv *2field at the center?

  How many turns should a 10-cm long solenoid ha7 0)i9rr jj3yx 2clqleve if 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 rectanguvxghbhp97;39aej(gx lar loop of 120 turns that carries 6.0 A ixae3jphb7gv ;( 9gxh9 f its dimensions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a unu8 tf5t-ns a,:neozg1 iform 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 perpendicular to the magnettzso15-un:a 8t g ,fenic field?

  A circular loop of wire of croejhl09 ,d um ;hlouk(,ss-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 current of 2.0 A is in al ir4 .+xrf.yl magnetic field of 3.5 T. The loop has an area ofi. .yr4 frl+xl $0.12 \; m^{2}$ 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 o xyy egy;,t:ckg9 soc/6,sah1f radius 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 torque when the plane of the loop is parallel to t,y 6:ot ,/9yh kg; asescgcx1yhe magnetic field?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic field of 0.w+qjqh:n0 t j6d4n5tj2y qu 1e30 T. The current e5nywj+h0q2dnj t4t q61j:uqin 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 area3-o59sq/y dbcaq1kx1qc kd. p7umg:t $0.25 \; m^{2}$ 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 parxr 4ggxt 9sf)f:c2;haticle (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 wyz glt5nf0uhz30lr : .ith 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 then movhlwn3u4 :sc/jui 1s. bo,y9e ves into a magnetic field of 9ln4s y uhec .1:b/ vjw,3siuo0.040 T. What is the radius of the proton's resulting orbit?

  A proton is accelerated from rest througspxpm 1nx-/ v;h 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Determine the radiusv/;npx s1-px m of the path it follows.

  A beam of electrons is avhor8n 10kas v2zl; 9r1cs id)ccelerated through a potential difference of 10 kV before entering a velocity selector. If the B-field of the velocity selector has a value of 0.0i) v; od10 czalsh82rsrn 19vk10 T, what value of the E-field is required if the particles are to be undeflected?