If the north poles of two bar magnets are brought close to eachw/+x+kuoc d afkmr -cztw(4k3e4u+o8 other, the magnets w kxk+-w euomw4k c4+ t/( oucfza+dr38ill

  If the south pole of one bar magnet is brought near the north pt:jnw j1a/(wuj*w-c:/ wb mayole of a second bar magnet, the two magnets wuw :j:jc w y1b/( at/wa*-nmwjill

  If a bar magnet is divided into two equal pieces, ve2e c:xkxbzm9ye7/ ,(/;su 7htlt4buhb 6km

  The Earth's geographic North Pole is magnetrz01h3+ nwvaai di /.cically a

  The south pole of a magnet points toward the Eahhl7 hdcb3f2e:z 7avz)v88 ku rth's

  An electric current yi4w2mmspxa2 h/2(ul dmt, ,uproduces

  Which of the following is corr3a(yem c9sxg3grdu 9rs6 0rdm: --g-ho8oxlx ect?

  A vertical wire carries a current straight down. To the east of thisdqvhvn xo0*h nn pc9//q*w nb l14lh4y7r*q2p wire, the magnbl* n q/ 14yqhpdpxq9c0 wr*v/*no2vh4nh7n letic field points

  A horizontal wire carries a current straight toward y .6 vbez*b2unnuwlec94t8 mab ;f8eq)ou. From your point of view, the magnetic field caused by thib)te .6;vnz8nf*ue bm4ul c8e29qwbas current

  A current carrying loop of wire lies flat on a table top. 8vs1dkod8)y lp;e tn; When viewed from above, the current moves around the loop in a counterclockwise sense. What is the dird;to ;e8lk d )8n1psyvection 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 top. When vie( 1gh2+p m+(ap i ijinn9lgtn(wed from above, the current moves around the loop in a counterclockwise sense. What is the direction ofmt i gnia g(+np(+pn9jli12 (h the magnetic field caused by this current, inside the loop? The magnetic field

  The SI unit of magnetic f: cfp0hfck22j ield is the

  1 T is equivalent tous0ina0.gt*rcs)g m.xc z 0 .q(yr ,uc

  The direction of the force o3brg vb87 9aqqn a current-carrying wire in a magnetic field is described by which of 3g7b 8rqa9 qbvthe following?

  The force on a current-carrying wire in a magnetic field is the strongest -tnzjomt*t26) l vyq5 when

  The force on a current-carryin7h 5 6i2srb 0jvyeg1cng wire in a magnetic field is equal to zero when

  A vertical wire carries a curl2/d9qa5s j/7zshb+j tvr; diu2ws . crent straight up in a region where the magnetic field vector points due northz/2s+ic5rsvw ld jh.7bj;92 / qatdsu. What is the direction of the resulting force on this current?

  A charged particle moves and experiences no magnetic force. From *yx8 ( iozr/zethis we can conez8z( xo*/ry iclude that

  A charged particle moves with a constant speed through a r-xz lqp;lc3-cp3dn :8. bo5pnbng talf 6k. 9yegion where a uniform magnetic field is present. If the magn: 3 z3gpn-fnl - oaqlb8k5tpcpnl.9x6b.cy;d etic field points straight upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle move tdd7v ptb2g) f)2(onds across a constant magnetic field. The magnetic force on this particg(o)dt v t) fbp27dnd2le

  A charged particle is injected into a uniform magnetic field such towg83pd8 x y9l,vabw ;hat its velocity vector is perpendicular to the magnetic field vector. Ignoring the particle's weight, the pbxy ,9 oplgw8wa; vd38article will

  A charged particle is observed traveling in a circular path in a unifoaupn.pt (k8s epp22 pd3fzfxtsr2.+ 8rm magnetic field. If the particle had been traveling twic8nkt.szfpap2p3d(+2p tx sf.upe8r 2e 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 mas-lhqhqa .jz3(g x gr 170pl7lgnetic field. If instead the particle carried a charge of +2e, the gsr 3lgl0.hqz 1qx7j lpah(7-radius of the circular path would have been

  At a particular instant, an electron moves eastward at speed V in a (x -ah 6sxl s)qhj zadv+,h77wuniform magnetic field that is directed w() +vjh qxhhsasa 77l, xd6-zstraight downward. The magnetic force that acts on it is

  An electron has an initi 0pf/l,*dvt y+ pk7fvcal velocity to the south but is observed to curve upward as the result of a magneticf+0 fl,pv* 7kv /cdpyt field. The direction of the magnetic field is

  An electron moving alontpufiqa728,.* pf mxag the +x axis enters a region where there is a uniform magnetic field in the +y direction. What is the direction of the magnetic foix*7au.,p qtf 2fp8amrce on the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produl ;,jj2ig5jr7m nmq+x7a7bh vced by a long straight current-carrying wire is

  At double the distance from a long current is8mu ,vsw 3+z2twh*w-carrying wire, the strength of the magnetic field pw2u w3w+ *shmiv8tsz, roduced by that wire decreases to

  Two long parallel wires placed side-by-side on imsn6v q;xaq4 h-0k4ca horizontal table carry identical size currents in opposite directions. The wire on your right carries current toward you, and the wire on you4mx;k a 64 cnvh-si0qqr 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 horizontal table carry identicaw(etfat 4 u72m4 pp0ao2e2zj;mo c3q ll current stro4 w2j 4 etz2 pl3ceo2afa ;(mqmp70tuaight 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. The magnitude of g3,,b1v muyyothe force between the wires is F. The current in each wire is now doubled. What is the magnitude of the gm1bo yvu y3,,new force between the two wires?

  A long straight wire carries current toward the east. A proton moves ,;)mbn) *g+qlpe;v *zdcc6)ymnq aq atoward the east alongside and just south of the wire. What isndn)lqm;**z,v ay ce m;aq6 ))cbg+ qp the direction of the force on the proton?

  A wire lying in the plane of .ja qbng.3j*zpy4*v k the page carries a current toward the bottom of the page. What is the direction of the magnetic forceqzj *pnkg. *a j4v3.yb 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 q h9reslcgx a(b70+s6side-by-side on a horizontal table. If the wi eslh+(bac9sr 7x0q6gres carry current in the same direction,

  Two long parallel wires are placed side-by l8bn4/vfe x+do ,tgy,-side on a horizontal table. If the wires carry curre/,+vnfg8dx,o tlybe4nt in opposite directions,

  Consider two current-carrying circular loop 5kddg :d/(k b( ;mte3zyjyu2q1uons9s. Both are made from one strand of wire and both ca y s9:dd5zo(d2muq eu/(3gktyk;b nj1rry 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-o9rmfiko cqra-8o(ti08b - d 3carrying 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 magneiora bc8d0i(-9t3 ko- fmrq o8tic moment of the smaller loop, the magnetic moment of the larger loop is

  The maximum torque on a current carrying loop occurs when the andh9y-zw/ + i*o 8aba.1rmkhlzgle between the loop's magndlbazyhh1 z8.-koi a+9r/ *mwetic moment and the magnetic field vector is

  When placed askew in a magnetic field, a current carrying loop thozh*p z mp+r+u2x1kk ;at is free to rotate in any direction will experience a torque until its magnetiz+r 12 okhkp*p+mz;xuc moment vector

  What fundamental fact underlies the operation of essent avsx5y5/k -x86gvmiir7w*l8 oeii.yially all electric motorsymar i8y7.l5 gv*vk-/ioew8x5xi6is ?

  A circular wire loop lies in a horizontal plane on a table and carries curr xo*dk8xda03zent 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 magadd8 ozxk3*0 xnetic field?

  In a mass spectrometer a particle of mass m h 0,f;i,xg3 hvgaxi2f 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 i,2f g 0vfiax3g hh;,xperpendicular 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 passivy:z pf( up.+s:hm9cfng through crossed electric and magnetcfzfu.ymp(+: vsh9p: ic 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 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 par42emcbrhjem5f-.99wpv vp, n allel to a uniform magnetic field me v cw5b499pfp2rj-n. e,mhv of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a currenm047d7e fed5cb ux33t ukq0un t 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 ayvqu 30abm b,3 straight wire carrying 5.0 A when it is placed in a ma0uq, 33yba bmvgnetic 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 a mass of 0.050 kg and is in a mano3/efw g cpsc7;(ys.gnetic field of 0.10 T. What micns yg we(c;f/3p o7.snimum 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 uniform magnetic field of k f r3 ;qju.wnujh(m7pq4l: :o0.20 T. What is the magnitude of the magnetic force on fkw7uu:(qrpoj :h.34n j qm l;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 wit zq8l9c0 h ta7fq5tmu+h 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 9u-6lcaehr nk v w9y,4speed 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 nortf;xohm95( kyt h 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 with a sq x4u/n no5l:gnknfu 3:owir .z0 o)q2peed 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 dj.5gq*b)x31o lz 3szicshy7a 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 speed il5zi;5p ,v(vi7 mpc 1yb9l asof $3.0 \times 10^6 \; m/s$ 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 yl- 3,gx.bhhd+ t*g em.k dp;ethe magnetic k e-+g dh3bdgt..h ;lxepy *m,field at a distance of 0.15 m from the wire?

  A high power line carrying 1000 A genedp 0 .d.s*n ;2wuyjn n+jz4mst)o;qk erates what magnetic field at the ground, 10 m awa ydwp;;+osm*2djtnk) q.uzs.e n0j4ny?

  How much current must flepzpbjq9) r0 3 /ahay8k:8hjxow 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 cu .6qt(yvnyr tn3bf 9kd+o*xd3 rrent of 5.0 A is the magnitude of the magnetic field due to the wrktv 33 xq n.odyfdn t9(+y*b6ire 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. Thqpi*eqddxq)*x58ox( unxo ,4ey are separated by 40 cm. What is the magnetic field in thexn ), 8e xp udi4*oqd(5qxx*qo 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 opposite d4ib d91t4 qjlzirections. The wires are91 ijdlb4t4qz separated by 0.20 m. What is the magnetic field midway between the two wires?

  Two long parallel wires carry currentz - jguh6d/q3ts of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. At what point t6j/qh-udzg3 between the two wires are the contributions from the two wires the same?

  Four long parallel wiresn8 7ld 72tj9z*mo lsmm each carry 2.0 A in the same direction. They are parallel to the z-axis, and they pass through the corners of a square of side 4.0 cm positioned in tot287l smd*9mm7zn jlhe 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 the oppyt0u f: ;+prdiosite direction. The wires are separated by 0.30 m. Find the magnetic force per trp0:yfidu;+ unit length between the two wires.

  What is the magnetic field at the center of a circular loohraq5- ym1( bzp of wire of radius 4.0 cm when a current of 2.0 A flows in the wire?qzh br-m (5ya1

  A solenoid 20 cm long is wound with 5000 turns of wire. What magnetic field /tnuhbi 6 e4w;o1qkg,is produced at the center of the,w tuqhbn4;oe6k 1gi/ solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long axc7d sl8ht4 h +njj(+xnd carries a current of 4.0 A. What strength of magnetic field will it h dxlhn8+sx(+ tjcj 47have at its center?

  How much current must pass through a 400 turn coil 4.0 cje1:fac6 yc.dm long to generate a 1.0-T magnetic field cy.f :j16 ecdaat the center?

  How many turns should a 10-cm long solenoid have if it is to generate amy:k7oylda2x .4k:pb $1.5 \times 10^{-3} \; T$ magnetic field on 1.0 A of current?

  What is the magnetic moment of a rectangular loop of 120 turns that p y0ebabqk h:.013 zo1bxwm-g)j.mnacarries 6.0 A if i1xom e-.0 kb)n30ayb 1wz:bp qhjga m.ts dimensions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform magnetient foee uk x401*t*c+c field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when th1eck x o40et+ nutfe**e plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sectt6d r37zbeb 2mp zjb44ional 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 field crm+3g/t63:3uhhgi;dcqq v fof 3.5 T. The loop has an a3+3v qr3 u6ci:ghqcfmtgd h/ ;rea 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 0.50 m is in a uniform magnetbp) eqpkltjky0u8+1 8ic field of 0.30 T. The currenl eykuk)b8+jp0qt 1 p8t 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 a uniform magnetic fv j/wgflr3s /9ield of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torqusfwr l3vj9g/ /e when the plane of the loop is parallel to the magnetic field?

  A circular wire loop of a62 de1-rhr f*pmm- qujrea $0.25 \; m^{2}$ 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 speed oy4usnb/8 1m;xxy q9 yyf $1.0 \times 10^6 \; m/s$ 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 lsmwd-flqad5r*fc ;ii+*-w0obc -r8$6.9 \times 10^6 \; m/s$ 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 potenhx pb8xgd 3-fc l)f8*cwj:y2ytial of 1.0 kV and then moves into a magnetic field of 0dc)ygfc y:xp* lwxjhf- b28 38.040 T. What is the radius of the proton's resulting orbit?

  A proton is accelerated from rest through 500 V. It enters a ) y +qn5)yeaifmagnetic field of 0.30 T oriented perpendicular to its direction of motion. Determine the radius of the path yna )f+ieqy5)it follows.

  A beam of electrons is accelerated through a potential difference of 10 kV k 0p)nlxhnv :t4 qx3z8bf .uj8before 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 particles:qt4.n uxl v0 8pf8jzhx) bn3k are to be undeflected?