If the north poles ofp0 foy q6e(z: dr1g*tu two bar magnets are brought close to each other, the magnets 1fpg eyu(6d *rqo: z0twill

  If the south pole of one bar magnet is brought near tm +cst-jh5kjnc.g a-m6*l o5xhe north pole of a second bar xn c65ho.jm-+jkl a-st g*5cmmagnet, the two magnets will

  If a bar magnet is divided into two equal piechhz 9/omzpcj)xvlg .9;k6 2 eces,

  The Earth's geographicifjr5ubn7 9uwej0 hcg, p -1v1v(ju) x North Pole is magnetically a

  The south pole of a magnet points toward thqc yu..ljn suh7p 28a+b:iae (e Earth's

  An electric current prod 44dpyyyw7 e mx2.b:rruces

  Which of the following : o9 913-yuprdscr2 kcp-zwb ois correct?

  A vertical wire carries a current straight down.al 9sx/q+ue t k5q7 q57foylu1s6 j1bd To the east of this wire, the magn 95l 75td/sbxe6yk alsoj1f1q+ u7quqetic field points

  A horizontal wire carries a current straight toward you. From your point1y rzlw;*u y41xs,qlsie 9,pq of view, the magnetic field caused by tu1,*lp i 1y;,zswlr sqy9xq4 ehis current

  A current carrying loop of wire lies flat on a table top. j83zdy 3 zo nt0cma7k/When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic field caused by this current, outsmzac3y d 3j/n8 tkzo70ide the loop? The magnetic field

  A current carrying circular loop of wire liespee/:k ujlj:gg2 96iy 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 this current, inside the l/:geilep: 6k2u 9jyjgoop? The magnetic field

  The SI unit of magnetic field is f2 czn3kgkd40 the

  1 T is equivalent to8ys6myc l7rgnd+v z-cn s0d.zz9ya4-

  The direction of the force on a current-carrying wir joga2qos 6,4de in a magnetic field is described by which oqs4jgo2 ,6da of the following?

  The force on a current-carryingos b0p7*,nke qmt:sw8 wire in a magnetic field is the strongest when

  The force on a current-carrying wire in a magnetic h/ 4s lr+s6v.ppjtb 0sfield is equal to zero when

  A vertical wire carries a current straight up in a region where the;. zgw9at eqy7u82dc4)oa iww magnetic field vector points due north. What is the direction of the resulting force o 7ziac9y)w4 2.gtuq; ad8ewow n this current?

  A charged particle moves and experiences n j,v1 tvf f)9r,ewjtlffb *m8)o magnetic force. From this we can conj mlv fw,j9)*e1)r t, fftfvb8clude that

  A charged particle moves with a constant speed through a region where a uniform .i3-t;tbm l /:y cgwolmagnetic field is present. If the magnlbo/tm .:gw3 -lt ;icyetic 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 magn:*. o*e az9e okzg,nrmetic force on this parti,. *ezkz :*roano9egmcle

  A charged particle is injected into a uniform magnetic field such thatjj;iksxv+8a: g4g:pa /oe -p w its velocity vector is perpendicular to the magnetic field vector. Ignoring thej8gk: poj+:pa4a-i/;xg v swe particle's weight, the particle will

  A charged particle is obsry9tzy h:vm xp39 lfo53pe.y)erved traveling in a circular path in a uniform magnetic field. If the particle had been traveling zm9lhppy .3r)ve3x tf9yo:y 5 twice as fast, the radius of the circular path would be

  A particle carrying a charge or8c3uzh ih;od(otq pxxw.rf03, 3lw9 f +e travels in a circular path in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of the circular path would hahfx ( w ixr0zl,3cu9w83orq h o.td;3pve been

  At a particular instant, an electron moves eastward at sp x*wq/07dcg 4 *dsblsr 982t8ek k1 dtfjdj+dpeed V in a uniform magnetic field that is directed straight downward. The magnetic force that ac *bft0tdl42qkpsd w9 + dxc/* d8sdk jr17ej8gts on it is

  An electron has an initial velocity to the south but is observed top/f6bdqsq:le+u c l)o0.uwo( curve upward as the result of a magnetic field. The direction of the magnetulfw:luq0 .bs o)qpd+ce (/ o6ic field is

  An electron moving along the +x axis enters a region where there is a unip9u4tjd 8gex50-l ntsform 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 the pa4s-x g89e nt0dp5tjl uge.)

  The magnetic field produced by a long s wxhx, glnq3hf5s.. v1traight current-carrying wire is

  At double the distance from a long current-carrying wirs8sdqku;gp7roz ,40se, the strength of the magnetic field produced oqs dspkr,zs7 u;g804by that wire decreases to

  Two long parallel wires placed side-by-side on a horizwa,- q;1k acq:xvm8qyontal 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. Froav 1m :;x, qqykc-aw8qm 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 q1 p/(lkro4cjdqc 26s identical current straight toward you. F4cqrl1 j6/2dk p(qsocrom your point of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal qg a)92t0d 3f;x* ro-nxg pfxu* tta1ecurrents. The magnitude of the force between the wftoax3 *genqg-t1x tu9*x20p ; )drf aires 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 current toward8jtw vux y)w40 6ki;jz1wzw-t3um r3z the east. A proton moves toward the east alongside and just south of the wire. What is the direction of;z8u4) -ijx zmrwwut tw6y3zkw3v01 j the force on the proton?

  A wire lying in the plane of the page carries a current toward2y fg5 3 yglerz) k3jrgud4gqud- ;72b the bottom of the page. What is the direction of the magnetic force it produces on an electron that is mov ygk 3)lr2ggruzj7y5f bd 4e q2dg3;-uing perpendicularly toward the wire, also in the plane of the page, from your right?

  Two long parallel wires are pla,s7rgz dlymq5t-g 32c ced side-by-side on a horizontal table. If the wirt q3dg-ry5c lz 7sg,2mes carry current in the same direction,

  Two long parallel wires are placed side-by-side on a horizontal table. If the q2;hr3:uturg +u*m 1n3kgndk wires carry kdk2:* gh1u+rt n muqg 3rnu3;current in opposite directions,

  Consider two current-carrying circular loops. Both are made from one stran.p+;adaum pf fz (7obqmmx/ +*kxw3y.d of wire and both carry the same current, but one has twice the radius of the other. xfm.m fqp; a3k.px+zuam(w* /+7boydCompared 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 strand3-qjzy)8j1 fc qx z-ps of wire and both carry the same current, but one has twyz cj-)xqzq1- f3jp8sice 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 occurs when tw uw5-7e1vt guhe angle between the loop's magnetic moment and the magnet- tuuv75ew 1gwic field vector is

  When placed askew in a magnetic field, a current carrying loop tha+od1h 6(ir.h c1spj dn.wd3qy t is free to rotate in any direction willry (1cq 3 1d6.h.nwodsphdij+ experience a torque until its magnetic moment vector

  What fundamental fact underlies the operation of essentially all electric motoryzn x+. umh0q6(9lpu7 fti3hks?u 3+lk 6y7nz.t( h9f0qmxpu ih

  A circular wire loop lies in a horizontal plane on a table and carries curre8.mgd dtuwd/+nt 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 udg.8td/w m+d interaction with the magnetic field?

  In a mass spectrometer a particle of mass m and charge q is acceleratednf.ashcn78yn 3dq 2 i3 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 per38n n7fc .ansdhy i23qpendicular 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 consistgo7tcv 0 gmcd/x8r6: (lt,vrqs of a charged particle passing through crossed electric and magnetic fields. The forces exerted g0:6 7m c /lq,8vctrg(vo dxtrby 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.ctb/lzs.2 b (c60 A is oriented parallel to a uniform magnec .t(szbl2bc /tic field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of-/hh n(ai sqy6 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+jmq o y41 1vxphrw-*b wire carrying 5.0 A when it is placed in a magnetic field of 0.020 T? The wire makexy1 q4m*powvjbr h-+1s an angle of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long has a mass of 0ih13d. evvogm -6.fnb.050 kg and is in a magnetic field of 0.10 T. Wha .hfevogv63 dni1b-. mt minimum 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 0.20 T. What is th1+d-qw wce-j ve magnitude of the+-vqw1dcwe j- magnetic 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 spec-9a g574b0bzvty0:f miuugrh b9bo +ed 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 k0x pj*h .+gsvlb*ys +speed 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 rwto *z,q -,mnb:ry5u 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 sco0 +bc.bpv ;fpeed 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 witmzow)3+u:s/jt qjw ;bh a 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 of dl(maga7g5 gwmq17 v*ubtj00$3.0 \times 10^6 \; m/s$ 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 0yng)r :nay5k;vca 9zA. What is the magnitude of the magnety vzyc9anr; k5a0g: )nic field at a distance of 0.15 m from the wire?

  A high power line carrying 1 fk 6ax2q55)wwkciq 0g000 A generates what magnetic field at the ground, 10 m 2kfw5gic)a5 q0 qk6 xwaway?

  How much current must flow forbxh18n,m6cuo $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long straight wire so:l844a 5xuxrp(v5,myvfa lcarrying a current of 5.0 A is the magnitude of the magnetic field due to the wire equal to the strength of the Earth's magne44rxauvsl:5ml ,58opaf yv(x tic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents of 10 A in opposite directions. They0z1g 4gn a u4rotlaj.: 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 the4 .lo 4 a:gj0zrtu1ang other?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite directit6, qk0g1grh8s )0odm yg)o5*nu v bvuons. The wires are separated by 0.20 m. What is the magnetic field midway dg0ybnu)k,oou5 r186tgvg mh0s v* q) between the two wires?

  Two long parallel wires carry curret e( i-xnf2qq-nts of 20 A and 5.0 A in opposite directions. The wires are sep tn-fqqi -e2x(arated 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 2.0 A in the same direction. +.nf gq ll/co9They 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 onenl/.lc+9 goqf of the wires experience due to the other wires?

  Two long parallel wires carry currents of 5.0 A and 82*u2a lb, *d ry:hukuw,cu/pf.0 A in the opposite direction. The wires are separated by 0.30 m. Find the magnetic force per unit length between the two wir2 k*cf*ud,hup /2 u alwy,rub:es.

  What is the magnetic field at the center of a circular loop of wirva /bw6c) zm2ywg -gcsi4 -nik4rnhj2 hav2/- e of radius 4.0 cm when a current of 2.0 A gza swn-y)-4ajh26vibnk/ g /2r v -ci2chm4wflows in the wire?

  A solenoid 20 cm long is wound with 5000 turnj8w5z/ cm. fjhs of wire. What magnetic field is produced at the centerw z/fj5hj c.8m of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carries 7ysyvz19 t/x0 bc r-:jdp xz1za current of 4.0 A. What strength of magnetic field will it have at its cent:dpby-cxr 1zzt x0/v 1syj7 9zer?

  How much current must pass through a 400 turn coil 4.0 (5fpz(u jils:18 sjdfcm long to generate a 1.0-T1 ( uf5pjji8(f sldz:s magnetic field at the center?

  How many turns should a 10-cm long solenoid have if it is to j0nz(zopb h+ue14 i/5lp-o9oe xuj q7generate 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 1zk9 sl esya -tn+f129g zbc-o(20 turns that carries 6.0 A c zo - ln+sta-efg129z9bsy(kif its dimensions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.5 tl+.if0ze6ki0 m is in a uniform magnetic field of 0.30 T. The curil i6+fe zk0.trent in the loop is 2.0 A. What is the magnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sectional areae +9:sm )gv -afnzbb6i $0.12 \; m^{2}$ 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 carr,s 9o k.sjb-uxying a current of 2.0 A is in a magnetic field of 3.5 T. Theuj- s.bkx o9s, 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 magnr7+4: tk01g*i(kpf wu a3pith ffeck 8etic field of 0.30 T. The current in the loop is 2.0 Ae 3cgkfau0:( p4ihw1rf 8 k*tfk+pti7. 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 magneticwf(ty m6 t/howfo 26y3 field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the o(fyt t3fhy626/wmow plane of the loop is parallel to the magnetic field?

  A circular wire loop of area x4cfwmfe z.9f:6snq7 8z4n bn$0.25 \; m^{2}$ 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 y(b7xv cbvd-q9)d4qa v9:f kda 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,j eb; 8fpbpg: with 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.,89fssiq(asoc av 32z0 kV and then moves into a magnetic field of 0.0aqss c s28a3z 9vo(f,i40 T. What is the radius of the proton's resulting orbit?

  A proton is accelerated from rest throug2eoxq vyh4 dav7p*;rlfv)xob4s0 8 z)h 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Detoo248psl07e ;hvx bfxravzy4q)d)*v ermine the radius of the path it follows.

  A beam of electrons is accelerated through a p2ln m /p.ltcm4otential difference of 10 kV before entering a velocity selector. If the B-field of the velocity selectom tm/n llp.24cr has a value of 0.010 T, what value of the E-field is required if the particles are to be undeflected?