If the north poles of two bar mr/hv (x8ikl 5(,(,rl 3du,fbnizyd fzagnets are brought close to each other, the magnetsix zldlz rubnid3k f,(/hv,,f5y r(8( will

  If the south pole of one bar magnet is br uskp;uhhe wx-.:vafxf7nm .nz:+ 4*rought near the north pole of a second bar magnet, the two magnets wilw.usfh;n 4 v fp- xk7hrnzmu+::*a .exl

  If a bar magnet is divided into two equal piexivgw6)l:0 iaf d c4wah.(l g:ces,

  The Earth's geographic North Pole is q/.v3q: faxj yt iur)3magnetically a

  The south pole of a magnet points hm qh 8pmg;vzo/l(q/ zjha8u8an)b 8,toward the Earth's

  An electric current producesp mk3 kqh7lg :o2xd/0t0 o:ixu

  Which of the following is correctckja+y in j8w.5t4v .u?

  A vertical wire carries a curr pjk3 h/t7vu*sent straight down. To the east of this wire, the magneticu 7*h 3pks/jtv field points

  A horizontal wire carries a current straight toward you.aioqjp r*y-qb7c) 4es6 o/t(u From your point of view, the magnetic field caused by this /t ijqoep7b 4cua (6qo- *)rsycurrent

  A current carrying loop of wire lies flat on a table top. When viewed frtidc/6j 4w e4sy+)zfhom above, the current moves around fhcz 6/ds ew4 t4yij+)the loop in a counterclockwise 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 top. When viewec,b9 d ho-3sbed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic field caused by this current, i93h-e, odbcsb nside the loop? The magnetic field

  The SI unit of magnetic field is thzd7in8yzplv5w2 /z 7ge

  1 T is equivalent tohwln-nbrr4vy hl,yg5jh6o3*.*ev w;

  The direction of the force on a current-carryingeo4 pp+2cxuch9 0xl7k wire in a magnetic field is descu4 2o 0 ppcclh79+exxkribed by which of the following?

  The force on a current-carrying wire in a magnetic field is t/qfxw)l3l td3n,(fr t c nh*n*he strongest when

  The force on a current-carrying wire in a magnetic field is equal to zero whe lorsxq4. ljxe g058tz8)+fx nn

  A vertical wire carries a current straight up in a region +qv7aonslr 4+ where the magnetic field vectoq rl onv+4+a7sr points due north. What is the direction of the resulting force on this current?

  A charged particle moves and experiences no magnetic ffd :mvs un pzv 0.d c)2* 7.whnmpukm8h13t0gaorce. From this we can conclum:)d71.m swm2 patkv u0h *8uch3g n0vnpf d.zde that

  A charged particle moves with a co vgi781kopocu49i0zo nstant speed through a region where a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting on this particle9 igv7 icozo18k p40ou will be maximum when the particle moves

  A charged particle moves across a constant magnetic field. The majog)ct 3 ka 2qph)6oh6gnetic force on this parti2 jtoo 3ck6qhp) 6ah)gcle

  A charged particle is injected intoix / cao6/wc7q gxujg;b :90o(zy sx/h a uniform magnetic field such that its velocity vector is perpendicular to the magnetic field vector. Igiz/acx:7sgqo/ox/u x0c6 ;(b9hy jwgnoring the particle's weight, the particle will

  A charged particle is observed trave4f/)rlxr gj f *, +lnl.dcr1r s7bj3coling in a circular path in a uniform magnetic field. If the particle had been traveling twice as fast, thxorfl .j gl)scfn1d3jlr4 +* r7,/cbre radius of the circular path would be

  A particle carrying a charge of +e travels in a circular path x/dx6d6.y 7gev mjp/o;g) ph bin a uniform magnetic fiejbg 6hv y)d/eogm ;p6x /d.p7xld. If instead the 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 a uh1h w1 v bkub() mxb6o9y.v9owniform magnetic field that is directed straight downward. The magnetic force that acts on 9 69 )(wb xhkm1yobho v1vwb.uit is

  An electron has an initial velocity to the south gg3,yyyn ;il2but is observed to curve upward as the result of a magnetic field. The direction of th ynlygi,g;23ye magnetic field is

  An electron moving along the +x axis enters a region where therzn)7b( puhpi 5x oe*6ee is a uniform magnetic field in the +y directbex*un 7zh(oe5 6pi)p ion. 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 lrhd1 :)hrai6o h pz7g9ong straight current-carrying wire is

  At double the distancex.,mqg z9x m1*xkdan58a vbp: :ja5pt from a long current-carrying wire, the strength of the magnetic field produced by that wire d85p v k :adxa 1pam: x.59gjqxz*bm,ntecreases to

  Two long parallel wires pl707kp lhvkwiuy :hz*) aced side-by-side on a horizontal table carry identical size currents in opposite directions. The wire on your right carrk7pvh)w *y:h0ku iz l7ies 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 between the two wires

  Two long parallel wires placed side-bu8 -pzct o9h3/trlhu;(qo1u p y-side on a horizontal table carry identical current straight toward youh 8u 9 ;lqtoz(-cu1p/tp h3uro. From your point of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal currents. The ma m7 rcbf)2cgw7gnitude of the force between the wires is F. The current in each wire is now doubl) cm7w7b2fcg red. What is the magnitude of the new force between the two wires?

  A long straight wire carries current toward thev s b83ao4; qbnfp+cb0 east. A proton moves toward the east alongside and just south of the wire. What is the direction of the force on the p 3qnabcb0fopb+ v4 8s;roton?

  A wire lying in the plane of the page caxe-zfvslh*kt ,w:uko:n; m:vv- w x+0rries a current toward the bottom of the page. What is t-eslk:mwvzvo*nx0 k -v :;f+ht, :w xuhe direction of the magnetic force 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 pwnqw) z1tg0 c(qv9m e(laced side-by-side on a horizontal table. If the wires carry current in the same dirqt1q)c(gv(9enzw0 mw ection,

  Two long parallel wires are placed side-by4p iguy 1h9k*e1zsk-n-side on a horizontal table. If the wires carry curreniu9-1z41*py kg sk nhet in opposite directions,

  Consider two current-carrying circular l(tvynnc92if2 oops. 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 smalleynfc2 9n(2vt ir loop, the magnetic field at the center of the larger loop is

  Consider two current-carrying c tcxtb:s8n1.+fzo /k qircular loops. Both are made from one strand of wc: t.+zx/f81oqsnbk tire 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 the larger loop is

  The maximum torque on a current carrying loop wy,3qrep3qk vv 7x/aq8dwzy+l7m-q :occurs when the angle between the loop's magnetic moment and the magnetic field v- 7/q:vkvz +y8my 3pd a7wr,qlw3qex qector is

  When placed askew in a magnv/*t+yv8 (dwb)s /t; ssf qhksetic field, a current carrying loop that is free to rotate in any direction will experience s d/tvsky*f/bt qs 8+h(vw);s a torque until its magnetic moment vector

  What fundamental faccfhs+/ck 165o4ce/ x ml*xa6qwr koi9t underlies the operation of essentially all electric motors?c6m*e 5ah/o9x/1rx cfw4kc 6qs+o lik

  A circular wire loop lies in a horizontal plane on a i jnw4(v r08drtable and carries current in a counterclockwise direction when viewed from above. At this point,r r0ivdw4n( j8 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 m and charge q is 6wm;qku u e:;fj6p2 h1ec+azsaccelerated through a potential difference V and allowed+k c h jws6q:6fmu1;;peae2uz 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 consis0enn3- ow10eb:tu/b* opv soixf f9(a ts of a charged particle passing through crossed electric and magnetic pa*fb0buts0-f : eno1x v (/3o n9eowifields. 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 parallel to a u (7iclsyy9 e(n5t b:csniform magneiy9(etn:(cb lcs5 y7 stic field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a cur2 v7k6tfz flo 9vqb+ d5pyk;b3rent 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 mete34j dl)fizol5w 2 o-obr on a straight wire carrying 5.0 A when it is placed in a magnetic field of 0.020 T? The wire makes an 3i2f-lobz)odoj l 4w5 angle of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long 20r)u mbdswm3has a mass of 0.050 kg and is in a magnetic field of 0.10 T. What minimum current in the rod is needed in order for th3usmb d20mw) re magnetic force to cancel the weight of the rod?

  A stationary proton is ih2j-.dn*io py ;w lf5un a uniform magnetic field of 0.20 T. What is the magnitude of the map5y2dh wil; -o*jfu.ngnetic 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 speed )xjlz6vu c/e8u 9 )pqi:ff +knof $5.0 \times 10^4 \; m/s$ 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 speed of p ;h/mg4jmqj)e )3zix$5.0 \times 10^7 \; m/s$ 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 nortuwkno urqcvcq*u 77(i3n4yc* a ge*0 /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 speev/wes65ut 8hmj3 hxo ap/zi(5d 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 speed pd)88-r7 ia*g5mon jruudqx7ejar5/lqf 9v, 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 speedtiny6rh- 7 3tl 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 carrien(mkw ykqq3/)q gz2)ll3fqt 7s a current of 25 A. What is the magnitude of the magnetic field at a /qktnz)qqylg(7k fl 3)m wq32distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magnetic field at the q8ds 6d+ kus(a+c/ gjmground, 10 + j68( dssgc+m/kquadm away?

  How much current must flow fotwiz a j/9ot. x(/jljl;c.cg 8r $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long st stz)t ,11- ggkeu*ldnraight wire carrying a current of 5.0 A is the magnitude of the magnetic field due to the wire equal tos- dtn kg)z1g*e ,lu1t the strength of the Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry c22;px( vpwbnfurrents of 10 A in opposite directions. They are separated by 40 cm. Whvfn x2bp2; w(pat is the magnetic field in the 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)p8l*ztyu :2fae-wvema p b8 + ,rji4j currents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What isui,ba jpezjt : 8p*8ev42l -)myawfr+ the magnetic field midway between the two wires?

  Two long parallel wires carry curre ok2hsx5nht 8joq.;:g) 2lglgnts of 20 A and 5.0 A in opposite directions.h n2jq)g lt lh28x. o;5ogskg: The wires are separated by 0.20 m. At what point between the two wires are the contributions from the two wires the same?

  Four long parallel wires each cv i;xsic2no1x76hd,o )n h+n aarry 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 the x-y plane. What magnetic field does one of the wiri 6hi da con21;n)7 xvohs+n,xes experience due to the other wires?

  Two long parallel wires carry wdhsjd w-bqep, 4f.ottvp554j95u(ocurrents of 5.0 A and 8.0 A in the opposite direction. The wires are separated by 0.30 m. Find the magnetic forp5dj5j9pw w,4vuoo.-df4 b q (h5ettsce per unit length between the two wires.

  What is the magnetic field at the center of a circular loop of w;sty-*m ;z wgnire of radius 4.0 cm when a current of 2.0 *ts;gmyzwn- ; A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. What mag1- m8o+ze*.w zioaqpfak(x zn3v87 p pnetic field is produced at the center +(fe-8*1v8pp7nqoz zzxam .o i k3awpof the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carkx ll:q rsn1m6)nu :;urm h.+u/2zkx xries a current of 4.0 A. What strength of magnetic field will it have at its center?/rl l:6mk+;2nhr: xk.un1mzxu ) q sxu

  How much current must pass through a 400 turn ct z3iwmz/;/ +fcgugmpc 6j9* roil 4.0 cm long to generate a 1.0-T magnetic fieldf93+c p/;r mgzwzmgct uj 6*/i at the center?

  How many turns should a 10-cm long solkq4v q0ossnk5 z0y gp6bp*5s (enoid 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 arq ul 8pc ,5 d8gsiv2yh77to/l rectangular loop of 120 turns that carries 6.0 A if its dimensions are 4.0 cm x 8tor l,l ugi5/8vq7hps 8c2d7y.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform6jpbtzrf*l2b4d0p rx vy(k7+ 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 lo+4tbp(v pyzb l rd7r2xj k*06fop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sect*xpc0 yk g y+8z1qim.oional 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 of 3.5 T.2xmc(dre d /n7ewt ,agry /)2v The loop has an areax ,e/ 2d)t2ryv/(aren7c g wdm 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 0.50mizbek.irc) 3*zlc92 m is in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. What i)3. b ze*m2ki9zcrclis 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 uyfj(2r3tc u l.ze:u)rniform magnetic field of 0.30 T. The current in the loop is 2.0 A. 2 utr y.jf3zu r()ce:lWhat is the magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop of areaus kwi:e1*h*e $0.25 \; m^{2}$ 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*myytejfh nfl3)+b 0orbdt+. 9: .cac 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 velocit+ hcv/qzcfy v ,v/vb1eqf r-28y $6.9 \times 10^6 \; m/s$ 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 moves into a magnetic frrb6eql ;y16field of 0.040 T. What is the radius of the proton's resultq 6b;lf r6y1reing orbit?

  A proton is accelerated from rest through 500 V. It 6ry *kcoqoq* o.y7p6centers a magnetic field of 0.30 T oriented perpendicular to its direction oyr6 7 oopcokq 6*.c*qyf motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potential difference oft5 :l(jkhyk 6/hy0qrs 10 kV before 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 rhqjsy( /h0k l6k:5rytequired if the particles are to be undeflected?