If the north poles of two bar magnets are brought clo b)nub19 h2nlose to each other, the magnets l92h nn1bob)u will

  If the south pole of one bar magnet is brougor3x lgfec /(.ht near the north pole of a second bar magnet, the t f( l/xro3.ecgwo magnets will

  If a bar magnet is divided into two e .qpf66z+4lyer-yw jequal pieces,

  The Earth's geographi 1 /waptj., gxj*yevumc(ss. :c North Pole is magnetically a

  The south pole of a magnethnv rao;zm v, 5r**pc6 points toward the Earth's

  An electric current prowdrxfn 786 1ziduces

  Which of the following is cojz r(9)wn,r 5cph,f aarrect?

  A vertical wire carries a current straight down. To the east o txdd.s/*3sjg 6:0f adev t,hcf this wire, the magnetic.t6xdtegja:* c/h d30,vsdfs field points

  A horizontal wire carries a current straight toward you. Fronz:cj - p9 oqyq/6u(fbm your point of view, the:-ny6zfcbj u( 9/op qq magnetic field caused by this current

  A current carrying loop of wire lies flat on a table top. When viewed f pb06r:,gp4jxclerv1q3 f+a ki cv56irom above, the current mi 4pb0cr6kec63px+g1l: ,q vi5j rf vaoves around 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 l72y 2 vl4go *rdr,ioovoop of wire lies flat on a table top. When viewed from abovel 4,*d7v2 2rogiyo rov, 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 magnetic field

  The SI unit of magnetic field io ojysmp4m/q,8qi3j-u :yz e.s the

  1 T is equivalent tolm1mmd1fc-( f1 p tr;p zg7*al

  The direction of the force on a current-carrying wire in a magnetic z(k6kb5jb85z x +kvkq field is described by which of th kk6jbbq558+ vx k(zzke following?

  The force on a current-carrying wire in a magnetic fielrpbt4a)t( u( b48q4if ns;w7 qvv j2mqd is the strongest when

  The force on a current-carrying wire in a magppdf0g.plr u1i 1v2e :netic field is equal to zero when

  A vertical wire carries a current straight1;lt/fmi+ od j up in a region where the magnetic field vector poidloj;1m / ti+fnts due north. What is the direction of the resulting force on this current?

  A charged particle moves and experiences no magnetic force. F+ kyefean:l8 -rom this we can conclude thatynl :+f8-kae e

  A charged particle moves with a constant speed through a region where a ua bt5829inoc uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting onab2i u8tn 5oc9 this particle will be maximum when the particle moves

  A charged particle moves across a constant 7djsy 31rl*c omagnetic field. The magnetic force on this 7 ljy*s cr3o1dparticle

  A charged particle is injected into a uniform may2k6 -cj7krc 1/qz6o k 9,tb ,qwy jtp/aq7bvsgnetic field such that its velocity vector is perpendicular to th,b/q9/-y 67z cyw1 k2,qp k6k oqjcr aj7ttsbve magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in a circular path in a uniform mc ) wko/,qcuy, ygt+c-agnetic field. If the particle had been traveling twice as fast, tc)qc ,wy- o+u/tgcyk,he radius of the circular path would be

  A particle carrying a charge of +e travu7 cl;,mjyw3j els 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 wu j73,yjlcm; have been

  At a particular instant, an el1n/l qq: jd4vwectron moves eastward at speed V in a uniform magnetic field that is directed straight downward. The magnetic force d1vw/j n4qlq:that acts on it is

  An electron has an initial velocity to the gpqy;8r7;qwq:su6t(lrrdb9b +mij, south but is observed to curve upward as the result of a magnetic field. The dire y:bqd+gw7msi jr;lp9 t brq6qr,8 u;(ction of the magnetic field is

  An electron moving along the +x axis enters a region whererquor0rf7b)ke-1d ak9n)j z/ +s; sg u there is a uniform magnetic field in the +y direction. What is the diuua q09k) sbrfz s 17) +gr;de-kj/norrection of the magnetic force on the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produ x(td)1 k8uiqlced by a long straight current-carrying wire is

  At double the distance from a long current-car 6rxyaa6e2o 5 vjxb 0;wc69gfavx)snu)* 7djnrying wire, the strength of the magnet 02*v66 nrjn gxasydf;xv) a9b5o6 )j7acuexwic field produced by that wire decreases to

  Two long parallel wires placed side-by-side on a horizontal table carry tbe o p :xtb.-b22x-bw.v k:omidentical 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 betwep.w :-ttbbbx: ke22xm -ob. voen the two wires

  Two long parallel wires placed side-by-side on a hu hp-vhd/9:km orizontal table carry identical current straight toward you. From your pohm9hp/-k:u d vint of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnitufnv o.19in+c.8dhck lq 7xm2vde of the force between the wires is F. The current in each wire is now doubled.vch.9n8dci.ox27 1n fkl+qm v What is the magnitude of the new force between the two wires?

  A long straight wire carries current toward the east. A proton moves 90 ,;(kejt qyh t5pbhbtoward the east alongside and just south of the wire.ph ,y k0bbhq9;t j(e5t What is the direction of the force on the proton?

  A wire lying in the plane of the page carries a current toward the 9ya8:p6edc nl w./ttv bottom of the page. What is the direction of the magnetic force it produces on an electro av .tecldny9:6t8/w pn that is moving 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 *f57 , b*-odzg) qbm3c*lrcgmnxy up5 table. If the wires carry current inb*5rq y*zxmb- 5lg)c op,* fgmd 3cnu7 the same direction,

  Two long parallel wires ar5, v*olbmt pb6e placed side-by-side on a horizontal table. If the wires carry current in opposite directiompo,*tbv l 5b6ns,

  Consider two current-carrying circular lscg/ ujsy +)w0oops. 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 smallwsjc g+0 s/)uyer loop, the magnetic field at the center of the larger loop is

  Consider two current-carrying circular loops. Both are made from.8 pdbh,fwy9*li0v ek3e hkqj99sa ,g one strand of wire and both carry the same c w3v lh.a9jg8, q,ibhfsek ey*dp90k9 urrent, 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 0c. w/bl43 y7m raefvua current carrying loop occurs when the angle between the loop's magnetice43.bv c ualf7r/my w0 moment and the magnetic field vector is

  When placed askew in a magnetic field, a cu pxru o.ewamlqsv330wl8+( 0 rrrent carrying loop that is free to rotate in any direction will experience a torque until its mwpvsl0oe0au rr (w3m l 8x+q.3agnetic moment vector

  What fundamental fact fptu o. x0tf/yod68-dunderlies the operation of essentially all electric motors?od t8.ptdf-0u 6/fyx o

  A circular wire loop lies in a horizontal plane on a table and unb8d8m9dj7 fcarries current in a counterclockwise direction when viewed from above. At this point, the Earth's magnetic j d7u988dnb fmfield 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 accelerated v hkk.,bg4u /mthrough 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 fikkm., /ub4gh veld 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 consc;gurv j+h,xre7 , 9bmists of a charged 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 9+bmvjrcxh 7eg ,, ;urdirected to the north. What direction should the electric field point?

  A 2.0-m wire carrying a current of 0.60 A is oril/ -j* +7zwmngtz.hg fented parallel to a uniform magnetic fizglj* hzw7-+t f/ .gnmeld of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a * s4+j rgj(,qizj9b6kyal. kxdirection 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 pelo- n)q:3lzevp uj0 vv34dgc7r meter on a straight wire carrying 5.0 A when it is placed lg- qnu0el 3zvv3p:4c o)7jvd in a magnetic field of 0.020 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 is in a magnetic fieln i *hsn3)3pbtd of 0.10 T. What minimum current in the rod is needed in order for thhtn)3sb p*3in e magnetic force to cancel the weight of the rod?

  A stationary proton is i0* 3jwuws8 * qrxijj0on a uniform magnetic field of 0.20 T. What is the magnitu* 0*3r x w0w8ujqsoijjde of the 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 spdrnw- t*(-fw7*v fzvt( vh6g feed 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 speeh+3 1j(u pkesaqt0hl k6vq0(ed 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 ;joo/pyz)5kw vuqg-:rxg 3z3 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 speed of2i7 uz0g57 +bqbhpzkk $8.0 \times 10^6 \; m/s$ 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 rsb8tc;: jqg.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 speedekx;ys4iq ((j 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 8tm ef(,b ne7hcarries a current of 25 A. What is the magnitude of the ma ,hmebf87tn e(gnetic field at a distance of 0.15 m from the wire?

  A high power line carrying 100k7imxvp+wb5je)axuq3)a bk,,i(o l 10 A generates what magnetic field at the ground, 10 wlmo )b,( xqa vka)p5k i7 ex3,jbu+i1m away?

  How much current must flow for bekpa5y(ntyb d, )p50 $1.0 \times 10^{-3} \; T$ 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 is thv -( p0znlqq3fe magnitude of the magnetic field due to theq0zpf v nl-(q3 wire equal to the strength of the Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carv 4aw5 qj0nbg0m1q8k pry currents 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 0nvqp084wabkm 5g jq 1and 60 cm from the other?

  Two long parallel wires carry currents of 20 A and 5.0 A in oppolbd4h im1bd. 6fmf5+osite directions. The wires are separated by 0.20 m. What is the mih1od f4m.+mbdlf65bagnetic field midway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite dy8pp/k,uhm.4 vn )s hwirections. The wires are separate8spnhu y .hpwk4/m, v)d 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 directiorol ,zdv hoa417*mf,v n. They are parallel r,o1zhd, 4 mo*v7valfto 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 wires experience due to the other wires?

  Two long parallel wires carry currents of 5.0 A and 8.0 A in the opp3+ tdzkog)vgh 7zi0 d.osite direction. The wires are separated by 0.30 m. Find the z7d +doi0.gvh k3)zg tmagnetic force per unit length between the two wires.

  What is the magnetic field at the center of a circular looviq7x2azp lq q6o+u0 )p of wire of radius 4.0 cm when a current of 2.0 iluvq07z 6xpq) a+oq2 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. What m5mejjih ock7:,bc5 (h agnetic field is produced at the center of the solenoi 5jh o(m5: i,c7hekjcbd when a current of 10 A flows?

  A solenoid with 500 tnmqc+t*ktb t )0pzo 5)hci7b2urns is 0.10 m long and carries a current of 4.0 A. What strength of magnetic field will it have at its ctobc )qmb2z 0*ntc+)p7ti5 hkenter?

  How much current must pass through a 400 turn coil 4.0 cm long to generate9uhrnudjtd1ot25 y( /(x ytu9 a 1.0-T maj( h9ddt2 x 5ur(yuo/u1yntt9gnetic field at the center?

  How many turns should a 10-cm long solenoid have if it is toc(ur3geud6w izjpv9 6mk1kk;z g/5s2 drn .i( 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 g1uxdz 798 acwthat carries 6.0 A if its dimensions ar81a9gx7zdwu c e 4.0 cm x 8.0 cm?

  A circular loop of wire of raditnvc:m-(1v ,aqzkerg /2 oi+ ius 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 magnetic torque when the plane of the loop is perpendvageoc qr (mn1k: + ti-i,v/z2icular to the magnetic field?

  A circular loop of wire of cc pcyh;03 bjw9ross-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 y36g3px6 febdis in a magnetic field of 3.5 T. The loop has an area offg66y b33xped $0.12 \; m^{2}$ 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 radiu cz./2r, ytw1i-gaurus 0.50 m is in a uniform magnetic field of 0.30 T. The current in th2ic-z, a1y /r rtguwu.e loop is 2.0 A. 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.go m0wz6;/ mpqcz3e q.50 m is in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. What is the q6 zw zem3.pqco m/;g0magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop of tb- k99ju1r g 5plnh*)urrc7g n/dag .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-char sf)ar8fybtbk 2:9y5fged 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 with9d tuph9mbc b5y*.lc 2 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 magnet /e ftf j8c jv3q47orrl6x 7,,iau3wltic field of 0.040 T. What is the radiu8rjalt7/ 7eox6ulj ,i ,f rcw3 fqt3v4s of the proton's resulting orbit?

  A proton is accelerated from rest through 500 V. r+z+exl.o nosnytn 876j :3jk It enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Determine the radius of the path it fo:jj68 3ozlntesn. +xo n7rk+ yllows.

  A beam of electrons ib5.hoa:2ocro i+b+dx s accelerated 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 required if the particles b.cr2++abo :hox5 odiare to be undeflected?