If the north poles of two bar magnets are brought closeo3 95r q; dvr0y9bldjm to each other, the magnets wi3yj ol; 0bqd9rd9vm r5ll

  If the south pole of one bar magnet is brought a(j , hulu9*,clv z3xvnear the north pole of a second bar magnet,uvvu,x*hac ll(9j, 3z the two magnets will

  If a bar magnet is div8ht)( jc*:rs5 jck5xbcux yt+ided into two equal pieces,

  The Earth's geographigl0w)jvk lr*ik u02(j c North Pole is magnetically a

  The south pole of a magnet points toward the 10, qm8oka t4:-rfa, iyktmqoEarth's

  An electric current yv)+ mk 7 gqt4co*1jufproduces

  Which of the following is corrbng* mhi 5uu0/ect?

  A vertical wire carries a current straight down. hft; ; /c(98bawrykbsz0zx r0-/fw x v To the east of this wire, the magnetic field/wt s;-/b cyk xffr ;xzva8zh0( bwr90 points

  A horizontal wire carries a current straight toward you. From your p f:z 0q/e7 gqqr7i h+om3/itbboint of view, the magnetic field caused by th7ro3mgfb qt: i+b0q7/zieh / qis current

  A current carrying loop of wire lies flat on a tablh74-r/ey80uafvo n fye top. When viewed from above, the current moves around the loop in a counterclockwise sense. What is thef0va47/-yey8fnhuor 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 aob0jm,tc6yf2 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 thi,tybojf6 cm02s current, inside the loop? The magnetic field

  The SI unit of magnetic field is thehrzj 9g 8yhg/)

  1 T is equivalent tojf8l7twgp85,xk vdf sq4 p; t.

  The direction of the force 34e(6a ml60si* sqcl2 rtgpzson a current-carrying wire in a magnetic field is described by which of the following?6limc4*rs30(zlpqa g2 ss 6et

  The force on a current-carrying wfwlcxd.nz1h wf+iy )uyk5.(8 ire in a magnetic field is the strongest when

  The force on a current-carrying wire in a magnetico0jh bszw/cn 6 (u8gtbn8p e bj.o(j46s vzj-/ field is equal to zero when

  A vertical wire carries a current straight up in a ref ys 82brpji:(gion where the magnetic field vector points f r(8j:sb y2ipdue north. What is the direction of the resulting force on this current?

  A charged particle moves and experiences no magnetic force. F1p :rcd:l2adorom this we can colo2ddrpc1:: anclude that

  A charged particle moveola 2w ciob+*w6 do.3v1g7ebb s with a constant speed through a region where a uniform magnetic field is present. If the magnetic field points strb ibdob6+e17a2gwl v3cw o*.o aight 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 forb ifals0ue;5bw2ct 5/ 8 r;kkxce on t8faxs ;ik525 kel c/b wt;u0rbhis particle

  A charged particle is injected into a un8 kkvv ms(ka xmgz+2:3iform magnetic field such that its velocity vector is perpendicular to the magnetic fv2 a+z8mg3s kk:kxm v(ield vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in a circular path in a uniform ma7f w8f ;yrps7vgnetic field. If the particle had be7pfwsy; 8rv 7fen traveling twice as fast, the radius of the circular path would be

  A particle carrying b7d* nwknf)9ma charge of +e travels in a circular path in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of the circularfm)* kn dw97nb path would have been

  At a particular instant, an electron moves eastward at r6+8u95hde s.ttf*tlnp*i k /s,bb jcspeed V in a uniform magnetic field that is directed straight downward. The magnetic force that acts on itdfh+ls, n *.tt9t5cibu 86*e prkb/js is

  An electron has an initial velocity to the south butk+n3rvn7j7 s.aou 4ro is observed to curve upward as the result of a magnetic field. The direction of the magnek47rro3o7n jsav.+ n utic field is

  An electron moving along the +x au m728gygy5y)g tnzu9 xis enters a region where there is a uniform magnetic fiynt8y9ug)m2 7yg 5zgueld 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 page.)

  The magnetic field prodb2.mhxr9x.t:rmc lp r7 * 8blu tyum+8uced by a long straight current-carrying wire is

  At double the distance from a long current-carrying wire, the 0q4 ))lbzw ujtstrength of the mag4tqzwl uj0b)) netic field produced by that wire decreases to

  Two long parallel wires placed side-by-side on a horizontal table carzu ep*ax ,/jq w2:;xccry identical size currents in opposite directions. The wire on your ujx*e xc c/p,:q wz;a2right 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 wires

  Two long parallel wires placed side-by-side on a horizontal table caroy9v,5kk zm7xry identical current straight toward you. From your point of view, the magnetic field at the point exactly between thex9vko k7 ,ym5z two wires

  Two long parallel wires carry equal currents. The magnp c4xc62xtjkwx3 8d +mitude of the force between the wires is F. The curre+4c3t8xd xx2c6pwkjm nt in each wire is now doubled. What is the magnitude of the new force between the two wires?

  A long straight wire carries current toward the east. A pzi(tb ss1t:.vroton moves toward the east alongside and just south of the wire. What is thes(s1 ttvib: z. direction of the force on the proton?

  A wire lying in the plane of the page carries a cuwtn .zqodtgt/2d+191jl nilx4 d.y5p b0-jk zrrent toward the bottom of the page. Win d4/oldx9q yl1ztj. + j21- .5dgzb knptt0what is the 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 placed sidepou8/bw xw74h i3v(si-by-side on a horizontal table. If the wires carry current in the sameb8phs xwu /73o vwii4( direction,

  Two long parallel wires are placed side-by-side on a horjiusd +-a6 l1gizontal table. If the wires carry curriu6-1ds lj ga+ent in opposite directions,

  Consider two current-carrying circu((r(l(qm1j ea f l76zex hd9xzlar loops. Both are made from one strand of wire and both carry the same current, but one has twice the radius ofxx(7rjfmde1e(l(q zh 9 6zla( 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-caoekz1x90dg+3 .ia x5v;ujdrhrrying 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. Compu x.dig319dza5r0;oh+jvexk ared 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 the anglesv4 ug1t;m2ygb+z 2xe d :7ji.6joz bz between the loop's magnetic moment and the magnetic field vecto+g:zum4 i;vs bj12oxbyj 7zg. dt2ez6 r is

  When placed askew in a magnetic field, a current carrying loop thsybwy +; hzj7s- s3n(cat is free to rotate in any direction will experience a torque until its magn njwcsy( y h7zbs;-3+setic moment vector

  What fundamental fact underlies tha2ksf,9 bynic ty/.)ue operation of essentially all electric motorsn9 s.tykyia )f u,/bc2?

  A circular wire loop lies ide(s 7m7ea ) wt5vpod:n a horizontal plane on a table 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 because of the torque caused by the currents interaction with the magne s7mv5a7 )(dd:oeptew tic field?

  In a mass spectrometer a particle of mass m and charge q is acce4h q-jvoaah-4hdk6ygh +;zc/f 1n +x glerated 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-cnh4g;++fg a1zdoqy 46hk-h /hj axv of B, q, V, and R.

  A velocity selector consists of a charged particle passing through cros ap2j*-*6om 4uxddib9hms*xhsed electric and magnetic fields. The forces exerted by these fields are in opposite directions, and only particles of a c 94hdbspdm6x-m2 *ih*oa xu*jertain 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 oro0eygl z2z (wrk 2trp pjl(-59.uni.f 0.60 A is oriented parallel to a uniform magnetic kjp g2rwol .y(2 rp -.lir(0zu5tzen9field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a curren b65yg5:n vka)x: mszbt 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 it is placei)p vw++x.q9t ;frg aqtzda.3d in a magnetic field of 0.020 T?dtavwq9z i.a3+q;pfr x. )t+g 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 k8 qec 7m35ndydjyn-f( gt2c/rn9ar v7g and is in a magnetic field of 0.10 T. What minimum current in the rod is needed in order for the magnetic force to cancel the n/3 e5cm7jyvq(acfg y- 2 r ndn7r9td8weight of the rod?

  A stationary proton is in a uniform magnetic fieldr drndj0t2oq7o/6qp tu - g7r* of 0.20 T. What is the magnitude of thed2uogq-/drp6r q 77*ont0 jtr 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 aoo ,1 qpx:5swu 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 speede0w f pzj3b.e; 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 duek);t 3v5vhw*7xim hhs north 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 speedj jvwtgc12o6-g;(jd d 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 spq/43qjvdngj1j koo8t wg4 56peed 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 speedkij/m l.w v -h, ap(0x6zdqp-c 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 carries rd-: 0 obg arxu 1i4 f97pjio688 tiub8q:eeifa current of 25 A. What is the magnitude of the magnet0 riog-ed64uiat8oueq91b 7bp 8 8fx riji:f:ic field at a distance of 0.15 m from the wire?

  A high power line carrying 1 :9hgv(y vq 5h/ f8tui3+ozaug000 A generates what magnetic field at the ground, 10 iuh gg+zou/vf5yva:3(t9 8hq m away?

  How much current must flo.2v6poco0 thbmk() coey2jq3 w 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 c*yho5v) t s6yharrying a current of 5.0 A is the magnitude of the magnetic field duet)s5 v*hho y6y 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 current4(in ha:lam2 3zu fz7ms 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 t 2hmz (uai43f 7:anmlzhat is 20 cm from one wire and 60 cm from the other?

  Two long parallel wires carry currents of 20 A and 1 qu st+le5txzeq 9/q65.0 A in opposite directions. The wires are separated by 0.20 m. What is the magnetic fq z5s +quqle/ tte916xield midway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in ;n2m4v.(ilu2ynb czqy-/ ngh opposite directions. The wires are separated by 0.20 m. At what point between the two wires are the contributions from the two wires t/n4h. iv-g;q2m(zc nyy 2ublnhe same?

  Four long parallel wires each carry 2.0 A in the same directio5rgkwi* ; .x d6qod;: *ignwhzn. They are parallel to the z-axis, and they pass through the corners of a squxk*zd dgrw i:; .iq*5wghon;6are 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 cdj3b 9 swd)tza; gf(f6urrents of 5.0 A and 8.0 A in the opposite direction. The wires are separated by 0.30 m. Find the magnetic wd sa6b (fd9f;3jgt)z force per unit length between the two wires.

  What is the magnetic field at the center of a circular loop of wire ofj*0ssw occr mo v g.xr7d.s*2juhk/+a u:4wb8 radius 4.0 cm when a current of 2.0 A flows imsxrs4w k r u0db+chga j*/.c*wvs o oj72:8.un the wire?

  A solenoid 20 cm long is wound with 5000 q 6 vilod ehz/d.x8;r 8o-(dncturns of wire. What magnetic field is produced at the center of the solenoid when a current o vc/de 86r.iqd;-ldnz hx8o(o f 10 A flows?

  A solenoid with 500 turns is 0.10 m lo 5 ;xf+tow-wmvng and carries a current of 4.0 A. What strength of magnetw w-vm+ 5fxt;oic field will it have at its center?

  How much current must p7:q/ywzyy72df qf+7pwo1 xguass through a 400 turn coil 4.0 cm long to generate a 1.0-T mywu27xg q7p o1y7qw f f:/+dyzagnetic field at the center?

  How many turns should a 10-cm long solenoid havxhx*t l.4 o90n;(roh pv.qr z,x3veo fe 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 turnc1cqh e yl883vs that carries 6.0 A if its dimensions are 4.0 cm xc 8cq1h8 vel3y 8.0 cm?

  A circular loop of wire of radius 0.50 m is tsdii4oiot e . b(9x mrq::8e+in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 i:er i84.e9t (i bo+xqot:dsmA. What is the magnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of epd /8 ;ow1ztieo,qq9kn7zs/ 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 carr:ev4 fey ( )4kqiciy-pying a current of 2.0 A is in a magnetic field of 3.5 T. The loop has an a e(v )pi4q cy-fke:i4yrea 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 magnetic field of zmm6 -,)px szt3k4 zwt0.30 T. The current in the loop is 2.0 A. What is the magnetic torque whe twxtp4,zmsm6z) z k3-n the plane of the loop is parallel to the magnetic field?

  A circular loop of wire of radius 0.50 m is in4qj*u9 jrhj ;d1ryo+yg:**zpr,vm z i a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when thm *r+:g v oq z;j,y9jhd *pyrj1*i4urze plane of the loop is parallel to the magnetic field?

  A circular wire loop ob6l .hi0t3h fdxg:e3+ byh) xcf 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 sin.u hqg23u ezx9gle-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 da:xnd q*m6t bcl, s+s f5.ik6velocity $6.9 \times 10^6 \; m/s$ 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 throughfgn z (7nv6d9vpr0oi7o l7l-n a potential of 1.0 kV and then moves into a magnetic field of 0.040 T. Whld7v77n 0nrof9g( zvl 6pni-oat is the radius of the proton's resulting orbit?

  A proton is accelerated from rest through 500 V. It enters a magnetic field ofo6w j;xk,i6al nzli3zfkz7 5 2 0.30 T oriented perpendicular to its direction of mox6;7zik jo izknwfll36,az52tion. Determine the radius of the path it follows.

  A beam of electrons is accel6hyi5n0r w 3*g pb-kseerated through a potential difference of 10 kV before entering a velocity selector. If the B-field of the velocity selector has a value of 0.010ykgwi0 h3e6 n-sbrp5* T, what value of the E-field is required if the particles are to be undeflected?