If the north poles ofibly dm3js6q.y(zqb48py*- m two bar magnets are brought close to each other, the magnets w4.(qp lbb8 mz*iy- d6mjy3y sqill

  If the south pole of one bar magnet is brought near the north pole of a seco/(d4/vpdfy qk iu,5exnd bar magnet, the two m v/5dy 4i/xe (pqukdf,agnets will

  If a bar magnet is divided into two equal 152 , xapfvrxmdjce.:jck0n 6pieces,

  The Earth's geographic North Pole is mp z-,n5bt wyh,agnetically a

  The south pole of a magnet points toward the Earth;74mtlj 9kaz 2le0svt's

  An electric current prjzhz8d xonl -6 x-;m04bx z4ryoduces

  Which of the following is correo u).m*3dtv ( z0zybyrm4 dpn1ct?

  A vertical wire carries a current straight down. To the east of this wire, th3 e)rk)2f kkiaxi 3d7tffx3ru c65:zhe magnetic fifxak7)iuik2 kr3 cd3t zx:3e 6f)rf5held points

  A horizontal wire carries a current straight towal :;zuy7*lf. 4h,ruidjl5 hec rd you. From your point of view, the magnetic field caused by th5*i,h.ur f lc:lyde47;uz ljhis current

  A current carrying loop of wire lies flat on a table top. When vi,-mz0)5ubk vje w0v daewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic field caused by this current, outside the loop? The magnetic field0d)wzva - vj0uekb5 ,m

  A current carrying circular loop of wire lies flat on a table top. When viewedz(us1nbyt b-m /lwh-o. qq j77 from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic field caused by this current, inside the loop? The magy o/(bsqqmu7 1 -hbzlw.- tjn7netic field

  The SI unit of magnetic field isouco7t6.9+ vdcpty nudl5glp0) .a2n the

  1 T is equivalent to3oxny 8ejb,xy su l:x (.m/7kz

  The direction of the fo dk9 p)ybz.5 *ru5ihlnrce on a current-carrying wire in a magnetic field is described by which of tr*p niky5uzdb. )5 9hlhe following?

  The force on a current-carrying wire in a magnetic field is the strongest wherj3pqw1is qpd1e;5 7t n

  The force on a current-carrying wire in a magnetic field is equal to z1.o0 w ia:sqymero when

  A vertical wire carries axm 0haa ;vtmruif0- zd02 x1c, current straight up in a region where the magnetic field vector points due north. What is the direction of th0 ,10m-a xfhmr xdi0tcua2v; ze resulting force on this current?

  A charged particle moves and experiences no magnetic *vpc1 2zd gn, w-ehqg1force. From this we can conc*2czd wv phqn,1g ge1-lude that

  A charged particle moves witos,llzq;bbj.9oxzi + vh 5p(i-*n2eth a constant speed through a region where a uniform magnetic field is ppzl, ;o i +sij.lb(o5-zhbvqx9* e2ntresent. If the magnetic field 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 - :mqyvu 70/d mraqsu/force on this part: v- aq/m7 q0dsurmy/uicle

  A charged particle is injected rqkt(uzaw uj/6 ;-/c4go ju2xinto a uniform magnetic field such that its velocity vector is perca/6/;uxjrwg uo t2ju ( zkq-4pendicular to the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed nx,nnr6 nvr*+q2h+ fl traveling in a circular path in a uniform magnetic field. If the particle had been traveling twice2+n,xrn+nlfv6 *hqr n as fast, the radius of the circular path would be

  A particle carrying a charge of +e travels in a circul3n+fyrcbq 8 y8ar path in a uniform magnetic field. If instead tb8cr fnq y+3y8he 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 axws6 vc xmil u66s1bsk05 ;/se uniform magnetic field t; 0clv5ebs6 ssuwx6s6m 1x/kihat is directed straight downward. The magnetic force that acts on it is

  An electron has an initial velocity to the south but is observed to cur*2n1 ; nzo5i fudxbjl6ve upward as the res;nlo2u651*jfn bdi zx ult of a magnetic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a region where there is a uniform f3++u af,,yo+hl;ai c lpju/jmagnetic field in the +y direction. What is the direction of the magnetic force on the electron? (+x to right, +y up, and +z ou ai+yfu+ojuf+/ la,jp,ch l3;t of the page.)

  The magnetic field produced by a long straight current-carryinw;nl f+umu 2l* g)3lung wire is

  At double the distance from a long current-carrying wire, the strr wl. bs35-wgtength of the magnetic field producblsgr-wtw3 . 5ed by that wire decreases to

  Two long parallel wires placed9r,i;8 amwvq 7gvsu: t 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 current away from you. From your point of view, the magnetic field at the point exactly midway between the two wi8:ma;wqri g,s 9vut 7vres

  Two long parallel wires placed side-by-side on a horizontal tek oy3r2b/9ax rf(j q/5cau9sable carry identical current straight toward you. From your point of view, the magnyak2r399eo5 x /qr(sc/aj bfuetic field at the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnitude of t1civ fiqt+*d- .5e 8h-qzoyfphe force between the wires is F. The current in each wire is now doubled. What is the magnitude of the new force between the tq -eotdivcf *py8i+1zq-h . 5fwo wires?

  A long straight wire carries current toward the east. A;x2 k/:xn joi(sik uj: proton moves toward the east alongside and just south of the wire. Wx k:j(xo:k sn/iu2i ;jhat is the direction of the force on the proton?

  A wire lying in the plane of the page carries a current toward thevt4komr t 8r +hzut9 o1h(x+uf193tyw bottom of the page. What is the direction of the 9th9uht v ku fo8 +3zwxr (r1tmo+t1y4magnetic 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*yuxgj)5wt e0 are placed side-by-side on a horizontal table. If the wires x 5u*)gw0etyj carry current in the same direction,

  Two long parallel wires are placed side-by-side on a horizon0jaeppf(l n( es)i /+cr6jx v4tal table. If the wires carry curre i(s64(+ec xfvjplr)jen0a/pnt in opposite directions,

  Consider two current-carrying circular loops. Both are made from one strand q dpzz q t*ly,vhl4htj;pj m*j7 2:*,dof wire and both carry the same current, but one has twice the radiust,:;tyjqqh*jz7 ph,2d m*zp4l lvd *j 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-carrying circular loops. Both are made from one dwf w:; hs1n20 .mlvi wb6, wduzng/,zstrand 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 mag wwhnl;6zvdb f01: su.w2i/nd,w, gmz netic moment of the larger loop is

  The maximum torque on a current carrying loop occurs when the a:;djxvu aq6,t ngle between the loop's tvd,q;xj6u :amagnetic moment and the magnetic field vector is

  When placed askew in a magnetic field, a current carrpdxve cr8m,y 1b;*,qsying loop that is free to rotate in any direction will q xcr*m b8sp1,;vy,deexperience a torque until its magnetic moment vector

  What fundamental fact underlies the operation of etc+ :wszvoguwx2:m( -ssentially all electric motors?s2x(:t:m +w gucw zo-v

  A circular wire loop lies in a horizontal plane on a e.5gr( s7 0y/fhkqx4b z9nsfhtable 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 beck.gse r/y7h9qz f(5sf xnh0b4ause of the torque caused by the currents interaction with the magnetic field?

  In a mass spectrometer a particle of mass nrae nppnxb8m8q /2820kru / xm 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 perpendicular to the velocity of the particle. Derive an expression for the mass of the particle in terms of B, q, V, and R8mp80 au2n/ nr 2xb nk8r/expq.

  A velocity selector consists of a charges*( tnlbv9. xtd 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. In a velocity selector, the particles move toward the east, and the magnetic field is directed to the north. What direction should thex9(bsl.*t nv t electric field point?

  A 2.0-m wire carrying a current of 0.60 A ismfe/z x6cwjv22nj x8* oriented parallel to a uniform magnex2 6ncj2ev*8fz/j w xmtic field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a curcwq; 0:tb m.tqrent 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-fm2 : sziga-x it is placed in a magnetic field of 0.020m -ga2zxf:is- 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 i6 ttp9 p*9pui+z)a vqhs in a magnetic field of 0.10 T. What minimum current in the rod is 6)*i+pahqp9ttu vp 9zneeded in order for the magnetic force to cancel the weight of the rod?

  A stationary proton is in a uniform magnetikdka.d7y16/oif )fn 57vr wuo c field of 0.20 T. What is the magnitude of the magnetn/akdvd.fyw 6rf17)5ui oko 7ic 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 wit - * oo;zodk5v6inkg-xh 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 spee ewc , 4rvxgdo86bu;:td 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 spr li.o.ld:js2 . 3bfzi)w8kyqeed $4.0 \times 10^5 \; m/s$ 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 sw ;af4i4 jug5speed 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 ac 3(,/es rj(1p) uswrksddpq ; 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 86 kez.m qeax9of $3.0 \times 10^6 \; m/s$ 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. / mi8 q/8kfngr What is the magnitude of the magnetic/8r 8qmgnfki / field at a distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magnetic fq nj53knl r-r :+htea-76i wysield at the ground, 10 m+n7jti5se ah: krl36n-w -qyr away?

  How much current must flo4 +6su:-g;pi t fctwpow 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 btgyg0:;) zvi is the magnitude of the magnetic field due to the wire equal to the strength of the vi ;gg:)y z0btEarth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry cuo2ascg 1.9.k vcya+dlrrents 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 from ts+ yd2kag..lv 19cco ahe other?

  Two long parallel wires carry currents of 2d-c n:z5p*rmo 0 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is *n :prodc-mz5 the magnetic field midway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in oppositx 8j+)c7 ;xhqpuceq( se directions. The wirej+xqqcsxe;)7pc uh8( s 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 carry a- u 2oba3w5ruo o4aa/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 t r/2uaao3 ob-wo4aua5he wires experience due to the other wires?

  Two long parallel wires carry currents of 5.0 A r29pc-qzls*d0 o x ;bpand 8.0 A in the opposite direction. The wires are separated by 0.30 m. Find the magnetic force per unit length between tc o0xqpsbd2z pl*-9r ;he two wires.

  What is the magnetic field at the cen/ox ld;b+anzu-qz4p 9 ,ps4kd ter of a circular loop of wire of radius 4.0 cm when a current of 2.0 A flows in the wpd /4dun,l4xz so ; z-qpka+b9ire?

  A solenoid 20 cm long iss c - jbe)k 3ihlcqt*y10 urxr8tp:e2- wound with 5000 turns of wire. What magnetic field is produced at the center of the solenoid when a c jqt0btsc x 1-hp:r*2e 3-)eci8lukyr urrent of 10 A flows?

  A solenoid with 500 turkiw v/hoj hy-4q1a;v)ns is 0.10 m long and carries a current of 4.0 A. What strength of magna jvq i)h-1k yo;h4v/wetic field will it have at its center?

  How much current must pasq:xqdv 9zhv3a 24y5bx s through a 400 turn coil 4.0 cm long to generate a 1.0- 4qxh5q2zvbx3avd9: yT magnetic field at the center?

  How many turns should a 10-cm long solenoid have if it is tohp:ilqt9ej rs;9c0)l 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 that cak0m 8 cy2wlz(grries 6.0 A if its dimensions are 4klmgc(y z 82w0.0 cm x 8.0 cm?

  A circular loop of wire of radius eq;robm+ w(jmy6m8 ibk4dc0 84t 2 izw0.50 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 perpendicular to the magnetic fieo+wrkt i086j4mqc( 4dwy b8 mz2b;ei mld?

  A circular loop of wire of crosldv /8zkwc9m8vi89yu s-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 ci 2, bmd/am v; c1hi-puj)gf n.ttc*;turrent of 2.0 A is in a magnetic field of 3.5 T. The loop has ,)*cfc ipnh tgma. -u/m2tivj;1dtb ;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 bc 30r: ena3eklfn9ti e m87h*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 tl9n78 3ec*kt:brm3ha f n0ee io the magnetic field?

  A circular loop of wire of radius 0.55ajllg1 9bx f30 m is in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. What isag9xlbf5 j1 l3 the magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop.r hd1l,5/ 2r1lky.ekvyhqp9uwz+ mi 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 single4nbq htkq1u:x hlp055-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 a+ )cfw0ov pf)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 moves into a magnetil:+fo b)e6 gtyc field of 0.040 T. What is the radius of the proton's resultingof eb)y:6tl +g orbit?

  A proton is accelerated from re0oteqeydcmm5jz55,- q5b8 j n st through 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Determine thej5e5bc e 0-qn jd5om z5,y8qmt radius of the path it follows.

  A beam of electrons is acceler 7vd yq/nofva4vs;n (/ated through a potential difference of 10 kV before entering a velocity selector. If the B-field of the velocity selector has a value of 0.010 T, what value of the E-field is vvy(;ad/nnovsfq4 /7 required if the particles are to be undeflected?