If the north poles of two bar magnets are brought ag ga t(6u i* usf58n;qh;:ojcclose to each other, the magnetnqgfju cg865h;u:a ;* itsao (s will

  If the south pole of one bar magnet is brought near the north(zh.7 vgicul 9mopx 2orw; (e+ pole of a second bar magnet, phz 7r+ (;.louvwcgoie(2x9 m the two magnets will

  If a bar magnet is divided into two equal pie2e c.lu6yhrzun8,( uj ces,

  The Earth's geographic North(g;m/, b nj 4ey4nlxwv Pole is magnetically a

  The south pole of a magnet poinwrr qi9/u8x6-zza9 ch ts toward the Earth's

  An electric current pr3irp)g 17r oiwvmr)- 8nvlh 0b4 m7zdaoduces

  Which of the followinx9p: a,ao p kz3c.ei8vg is correct?

  A vertical wire carries a9+o:sea 3f .ml4mfpsb current straight down. To the east of this wire, the magnetic fiel4fs9o+m e.lb3fa s:pmd points

  A horizontal wire carries a cur8svb3oc i8 z0erent straight toward you. From your point of view, the magnetic field caused by tsozbc 88 i3ve0his current

  A current carrying loop of wire lies f5vu2 *syg0 v z7 unn1jt4nmoj*2 l686xvjhuumlat on a table top. When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the mavsu*o5 *v n06ulhgtv74x1yj22unnjj6m 8u mz gnetic field caused by this current, outside the loop? The magnetic field

  A current carrying circular loop of wire lij(zz7;4t usb24k eu7zcdfr+ ces flat on a table top. When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic field caused by tzz4jcu4bd2f(rce7z k ; 7ust+his current, inside the loop? The magnetic field

  The SI unit of magnetic fj,utmq e6fv8, f1,pwzield is the

  1 T is equivalent tolf3 rj)u tr0h.o )dlo*

  The direction of the force on a current-carrying wig*+9 ,bptimcvre in a magnetic field is described by which p9,g vtimc+ b*of the following?

  The force on a current-carrying wire in a magnetic field is the strozqi cqwo48 v-5ngest when

  The force on a current-cav rt*7/1is hjbrrying wire in a magnetic field is equal to zero when

  A vertical wire carries a curohsb/( boabo20n v()nrent straight up in a region where the magnetic field vector points due north. What is the direction of the resulting forb a/b (n0)boov nos(h2ce on this current?

  A charged particle moves and experiencesxz,xiguf koxc6 x*4:+)sm7 ct no magnetic force. From this we can con )cx7uxfz ks ,+t oix4c6*x:mgclude that

  A charged particle moves with 4 rskcxo2, h ly47wwqrf o..1aa constant speed through a region where a uniform magnetic field is present. If the magnetic field points st oxwwks7ao14yh f ..2crr4,lq raight upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constant magnetic field. Thed/3vk/eutrlc l :dr 8: magnetic force on this p/ld 3cu r8d:ekl/v: rtarticle

  A charged particle is injected into a uniform ma5f0 ) g +amqj)dn5emvwgnetic field such that its velocity vector is perpendicular to the magnetwqv)ga+)m den 5jm0 f5ic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in a circular path inw2pyg6.b*vz8 v f q+lm a uniform magnetic field. If the *mf.gzpwy +82 bvl6vqparticle had been traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e travels in a circular py 8x3d j)ll2nrath in a uniform magnetic field. If instead the particle carried a charge of +2e, the rr3d2y 8) xllnjadius of the circular path would have been

  At a particular instant, an electron moves eastwa cq/ei;z) i4uerd at speed V in a uniform magneq4eu ;)izic e/tic field that is directed straight downward. The magnetic force that acts on it is

  An electron has an initial velocity to the sou ;vni 1iux.v pdk+ q5( bpol/np82a8auth but is observed to curve upward as the result of a magnetic field. The dirk1l+/bupdnvu8 p ia;nio2qp 58a.xv(ection of the magnetic field is

  An electron moving along the +x,js1tj-tiac.(ss29q q+c kap x0 7dwe axis enters a region where there is a uniform magnetic field in the +y direct9jde.jsw t,i+ pa (t20xcsa1qc q-s7kion. 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 produced by a long str/, 37 taqne w/dzyalu0aight current-carrying wire is

  At double the distance from a long current-carrying wire, theraz)zf23p 11 cyxdl a; strength of the magnetic field produced by that wire decreas3yxlc)r 1f 2 aad1z;zpes to

  Two long parallel wires plac uez 4b14 x7kja+fl4nmed side-by-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 c+nlezfx7k14ua jb4m 4urrent away from you. From your point of view, the magnetic field at the point exactly midway between the two wires

  Two long parallel wires placeu -u7a*wn5wu2mzo3 dod side-by-side on a horizontal table carry identical current straight toward you. From your point of view, the magooudw7n *w5uam-3u z2netic field at the point exactly between the two wires

  Two long parallel wires carry equal currents. Tmhd7 lg-9d g(e931) xg g+ebyajh,rgwhe magnitude of the force between the wirwa+ghhy3eg9gg-lrd1j m7 x 9b,( )gedes is F. The current in each wire is now doubled. What is the magnitude of the new force between the two wires?

  A long straight wire carries currk 2hxy(+3whwkli6)vc ent toward the east. A proton moves toward the east alongside and just south of the wireih c)+wy 3wklkh6vx 2(. What is the direction of the force on the proton?

  A wire lying in the plane of the page carries a current toward the bottom of thsf9euy l6p5uwl3 , -mc4ets y6e page. What is the direction of the magnetic force it produces on an electron that is movinglfycs mey34e 6st,uu6-95 wlp perpendicularly 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 ta:l0uo vdf.ke7ble. If the wires carry current :k 7lov0.deufin the same direction,

  Two long parallel wires are plah1367n f3 7qar lekeafced side-by-side on a horizontal table. If the wires carhenfkq1e 6a7af33rl 7ry current in opposite directions,

  Consider two current-carrying circular iy9: vf)l1y: -kut wofloops. 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 f w-tiul)f:1 9v: oykythe center of the larger loop is

  Consider two current-carrying circular lo,1wp k *p 4wd vb hc9kbao,ogm32c 1qfa:/gs1fops. Both are made from one strand of wire and both carry the same current, but one has twice the radius of the other. c1:, fwpq ,k1f sgm9w3/2bcb4 oaok gah1d*pv Compared to the magnetic moment of the smaller loop, the magnetic moment of the larger loop is

  The maximum torque on a curr kxu0ba gpxci d:,d;/::ryn 7went carrying loop occurs when the angle between the loop's magnwcp:ryai:ddbn/: xg; ,k 0u7 xetic moment and the magnetic field vector is

  When placed askew in a magnetic fieldya3dts+fnx. sr ;r 72 t(-riuh, a current carrying loop that is free to rotate in any direction will experience a torque until rt3ss7x; .(- r f nayrti+hu2dits magnetic moment vector

  What fundamental fact unpiivg-h5b*k . derlies the operation of essentially all electric motors?igkb* hiv5p. -

  A circular wire loop liel+j/qt hw++xhed) 6e es in a horizontal plane on a table and carries current in a counterclockwise direction when viewed from above. w/ x6+ e)qd+etlj h+heAt 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 pi)xzlls-lwlhu rfc8 j6/ 7 sh9:k5(rbarticle of mass m and charge q is accelerated through a potential dixfrbklj-5w (s9 cs/:8uh7zhr 6l )li lfference 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 an expression for the mass of the particle in terms of B, q, V, and R.

  A velocity selector consists of a charged parp-cwyezq8 1i*ticle 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 selector, the particles move toward the east, and thei-p8wyc*q ze1 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 parallel6dhiwhr/.9w j to a uniform magnetic field ./wh69w ijd rhof
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current4-ijn+mu2 *9rup wam d 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 )ltzmzr),tf6k,9+k fz +gr nfwire carrying 5.0 A when it is placed in a magnetic field of 0.020 T? The wire makes an angle rg, ,fnzt) z+tmzfkf+r)6 9lk 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 ijyv+1,o2 z2nvcek oj2in x0 w*qxr0n4qw82x jn a magnetic field of 0.10 T. What minimum current in the rod is needed in order for the magnetic force to cancel ixk42x,2 qnz v0wor +nx0j82*wq v12oecn jj ythe weight of the rod?

  A stationary proton is in a uniform magnetic field of 0.20 T. What i* 2qy9uc3 1 6 nseyutzi(.kpya 8:urfus the magnitude of the magnetic forfq9e rc32 sp k 1y.uyun6uautiy:(*z8 ce 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 spmc;n je1 4bh7vlm- oa4eed 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 spe9v,l6pb6en nhed 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 a:6/rmb 8h+ -lim 4whj6vd ilh$4.0 \times 10^5 \; m/s$ 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 spel/nc-i txp)7 cu mf,kx) vtj)(ed 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 st6 :/l.n t/am:i kioa71rf rejpeed 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 r:euk 3ljq53 t$3.0 \times 10^6 \; m/s$ 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 cary(ogrlxs)ma vejzl tvp 51 e7 2us0;+*ries a current of 25 A. What is the magnitude of the magnetic field at a distay 1l vozrgej(5lvs)*m 7a+xuep0t 2; snce of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magnetic field atqu 38 qh6e8rznw;1fi s the ground, 10 m as6fi;8h1zq qw 3ne r8uway?

  How much current must f eeav+hh:4ykl vx)+ /blow 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 wipast,/ v3-;gw/f l cisre carrying a current of 5.0 A is the magnitude /gia tfp-;lswsv/,c3 of 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 currents of 10 A in opposite directions. T-p/i-jw5lmb/gav ym7hey are separated by 40 cm. What is the magnetic field in the plane of the wires at a point that is 20a 7pym-miw /-5/blvgj cm from one wire and 60 cm from the other?

  Two long parallel wires carry currents of 20 A and 5.0 A in rrh z6fn 4c49jmw+nekmm),q-ac6*y -ecltz4 opposite directions. The wires are separated by 0.20 m. Whr cw*nczaj4 9fm z4hc66 e ,-yq- enkt+m)4lmrat is the magnetic field midway between the two wires?

  Two long parallel wires carry currents of 20 A and m gn6uf*pjwxw+a , lqn)c7v5 (5.0 A in opposite directions. The wires are separated by 0.20 m. At what point between the two wires are the(wn)wu p,j6lcq an7f m +gx5v* contributions from the two wires the same?

  Four long parallel wires each carry 2.0 A in the same direction. They are paray8cul09b(sy3na4 tb nllel to the z-axis, and they pass through the corners of a squa384tbayn sb(ulnc0 y9 re 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 kngb( clo82nrrn.o 1 6A and 8.0 A in the opposite direction. The wires are separated by 0.30 m. Find the mag8l2.bn(k cng6on1 orrnetic force per unit length between the two wires.

  What is the magnetic field at the center of a circular lo07 ku0xyff(rv lf( ds.c26qmbop of wire of radius 4.0 cm when a current of 2.0 A fr qy7fckl(bu. fs0x d2 v0fm(6lows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. What magnetic lnqv,-g0v-t;qx- k wtfield is produced0wt;xqkv l- ,v ng-q-t 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 of 4g1 xp kqz(akpt 4r82x4.0 A. What strength of magnetic field will it 4zkx(artgp 4pq 1kx28have at its center?

  How much current must pass through a 400 turn coil 4.0 cm long to generate a bm.) xp/, f:ob7qg,qtt c9qb x1.0-T magnetic 7bg ,p)bf/,o.9xtq:mbtqq xc field at the center?

  How many turns should a 10-cm long sr hi3zgu/h 88iom g y/g;(5wdqolenoid have 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 rectangular loop of 120 turns th+fp k9g, 9g-ypx+dxkhsu2 6*aiv7 *jv voyll*at carries 6.0 A if its dim29x9va*sf- d+*px ol i y7gjlgvky+,h6*kp vuensions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic fiipfi;i1am m9:eld of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque whp1:imi;9m iafen the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wibtj gr jt,5.9lre of cross-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) pn3gwac u8-w in a magnetic field of 3.5 T. Th-n)uw8pgc3 w ae loop has an area 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 magnet gr :c,h,wsq,;tmrk0,oe 0wxcblt: z(ic field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torqr,t,qbw0to (m, 0w ;g:kzlc rsehc ,:xue when the plane of the loop is parallel to the magnetic field?

  A circular loop of wire of radius3kfjhu(r2d . +e ejph8 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 magnete. ufj+h(h r pj8e3d2kic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop h d/jpnmd)9uqj2a)qgds/)k/ of 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 single-charged particle (charge e) has arvl imi dg/w. v*(v1qr1u(l1i 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 velo(ve kz.djr04xcity $6.9 \times 10^6 \; m/s$ 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 o e39*txziyx,7v+sxue f 1.0 kV and then moves into a magnetic field of 0.040 T. What 3tie* v yxu7xx+z9, esis the radius of the proton's resulting orbit?

  A proton is accelerated from rest t vqngblpk)/( +hrough 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to/v()n qlb kgp+ its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potential dig59ij x;nah/0 t,x tynfference of 10 kV before entering a velocity selector. I5j 0nit9ht/y;xn, xgaf 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 are to be undeflected?