If the north poles of two bar magnets are brought cli6 f1fb4) dtzzv :5iiv2 pjsd)ose to each other, the magnevd:)szz 5124vfp)6 f tdbiij its will

  If the south pole of one bar magnet is brought nev1 r jwua,0v;usj j,x+ar the north pole of a second bar magnet, the two magnetsuj rw1,j xu+0vva j;,s will

  If a bar magnet is divided into two 2-p yzcaet4z7z6os z3 equal pieces,

  The Earth's geographic North Pole is magnf)j-d kju;, wletically a

  The south pole of a magnet points tovomej 1:;, 1s;chjxfpxw 0v7iward the Earth's

  An electric current producetv l n a)ylf;h4c(n,(os

  Which of the following is c5qf sq;k:k. drbmsa; *0gf5itorrect?

  A vertical wire carrifvb/q:4cme t0 ceb6 o.es a current straight down. To the east of this wire, the me b0/cebm qo4c.f6:v tagnetic field points

  A horizontal wire carries a current by4ss8bduksxp7zq1x6 6 ss9)z m7 +wv straight toward you. From your point of view, the zzv+pw sk 6 s4)16sy 9qb7 sxumbd8xs7magnetic field caused by this current

  A current carrying loop of wire lies fla,nny:ohenkvzs w /y11p3ap-. t 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, outside the loop? The magneticz1/sn-n3,ho v1yk .n papey :w field

  A current carrying circular loop of wi: xd,su /3hxyqf5yf,o0d o g7wre lies flat on a table top. When viewed from above, the current mo53 xfusgy,/0: h7 w,q xfydodoves 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 magneq30,y :x mwcv, i no0 -,k0frixg,l )cbm.udsytic field is the

  1 T is equivalent to7 xkq ix7hp0fw7ok0 0g

  The direction of the force on a current-carrying wire inwj8-zm11hq+wb bn3yv9kj0d u a magnetic field is described by which of the follow+mkzdq8bj1ubhn 30v wwyj9-1 ing?

  The force on a current-carr6wn b+qtsjo.;6 hv +vxying wire in a magnetic field is the strongest when

  The force on a current-carrying r;f.uzp:qpch4jjlr j kpzo.l0+u,.m4a9; gg wire in a magnetic field is equal to zero when

  A vertical wire carries a current straight up in a region where:-uh t4w+lo qth5rdd/ the magnetic field vector points due north. What is the direct:lq4th/dt r+o5uh- dwion of the resulting force on this current?

  A charged particle moves and experiences no magnetic force. From thisi a;:qi.wn s2s we can concqaw.ii2s: n s;lude that

  A charged particle moves with a constant speed through a region where a uniform )a:yp .d +:0fv-xnwr yup5xkf6 f*t o5dckg l7magnetic field is present. If the magnetic field points straight upward, the magnetic force acting on this pa5*c): -f+add klrw:tyfpn pkg7x0 u6xovyf.5rticle will be maximum when the particle moves

  A charged particle moves across a constant magnetic field,:q ))k:drq h l5 x*ucnb 9qz:zj6usgd. The magnetic force o):qlk,:b xz 5uqg :6 9jnh*qc)udr zsdn this particle

  A charged particle is injected into a uniform magnetic field d jm bu6 p(8*i1gz) ffl(hokp9such that its velocity vector is perpendicular to the magnetic field z m*k ilo)f(6 p98bhd1uf(pjgvector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in a circular path in a uniformc 8w9:qz)n9rhqo89gfc q rb(k magnetic field. If the particle had been traveling twk9o(9f qb9 r8cgqrwhn:z c8)qice as fast, the radius of the circular path would be

  A particle carrying a charge of +e travels in a circular path in a uniform-a*m2alxi* bx magnetic field. If instead the particle carried a charge of +2e, the radius of the cir*ix*m axl-a 2bcular path would have been

  At a particular instant, an electron moves eastward at speed V in a uniform ) ccmi..o/ uo: tkc4ramagnetic rt)ooc:k 4/ i.um.cca field that is directed straight downward. The magnetic force that acts on it is

  An electron has an initial velocity c/cg6)s,yfr mto the south but is observed to curve upward as the re/) mygcsc ,fr6sult of a magnetic field. The direction of the magnetic field is

  An electron moving along the + 8cx-aiqpmvg-2er6c p .tdv() x axis enters a region where there is a uniform 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 p .v8q)eg6c 2tdv cira xm-p-p(age.)

  The magnetic field produced by a louq)b c/ev* g:png straight current-carrying wire is

  At double the distance from a long currn lm)8 if:f hb3vjllvv*z2.b+ent-carrying wire, the strength of the mag8 ilmv)+3vhblz. *fl fbnvj:2netic field produced by that wire decreases to

  Two long parallel wires placed side-g4jr/n chlk j26e1.l fykce.-by-side on a horizontal table carry identical size currents in opposite cehfkg2 nj/l-k1j4l.er.c6y 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 wires

  Two long parallel wires placed side-by-side on a horizontal table carry identica,hk*9nbzyy8 i l current straightyn*9hki z,b 8y toward you. From your point of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnitude o7oxx+pr9 2cl tf the force between the wires is F. The current in each wire is now doubled. What is the magntolp9c2xx7 r+ itude of the new force between the two wires?

  A long straight wire ef4 )+d l xcwl2l*jk.i0akwu5ea1iy: carries current toward the east. A proton moves toward the east alongside and just south of the wire. What l *iy+k1kdl faui4wx:5)e 0lej2a. wcis the direction of the force on the proton?

  A wire lying in the plane of the page carries a current toward the bot+s )eo-el( it9ki-u pmtom of the page. What is the direction of the magnetic force it produces on an electron that is moving perpendicularly toward thk im)p-9st+o il -uee(e wire, also in the plane of the page, from your right?

  Two long parallel wires are placed side-by-side on a hn61 on5 p rkep3;fyp3jorizontal table. If the wires carkp31nfp yp6r oj5en3 ;ry current in the same direction,

  Two long parallel wires are placed sidj *l5e*07p wbzejilm0e-by-side on a horizontal table. If the wires carry current in oppj0 jpb*0i5llw*zeme 7osite directions,

  Consider two current-carrying circular loops. Both are made from qfqh65) ujfb j;*-x cdone strand of wire and both carry the same current, but one has twice the radius of the other. Compared to the magnetic fcq6uj;5 dqhf bjx- )*field at the center of the smaller loop, the magnetic field at the center of the larger loop is

  Consider two current-carrying circulap0i 0svwu5r qhng1s+c .qd+5fr loops. Both are made from one strand of wire and both carry the same current, but one has twice the radius of ths 5rg h1c0+ vwsqn+p5dqi0 u.fe 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 / /cgl5*gu a/ :bwrukvb*c9 wuthe angle between the loop's ma:luugbarg bv*cuw/ 9 kwc//* 5gnetic moment and the magnetic field vector is

  When placed askew in a magnetic fc2;9 ;xh qihw-e/ :jqh*g s:gxn un.lcield, a current carrying loop that is free to rotate in any direction will experience a torque until its magnetic mjs-9gi:nq.w:lche*/xuqh c hg x;n 2;oment vector

  What fundamental fact underlies the operation of essentially all electric mdis)1:dw(+jk3;2wqs j sms ymotors)sw k1dqm2 jd3wmss ;y+(:sij ?

  A circular wire loop lies in a horizontal plane on :d.udp ,hrhr: a table and carries current in a counterclockwise direction when viewed from above. At this point, the Earth's magnetic fie: puh,rrh.dd :ld 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 w50v6k( qfqxfthrough 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 pawvqf6 0qkx(5f rticle in terms of B, q, V, and R.

  A velocity selector consists of a charzdy);6kbs )g knk161k xpegy7 ged particle passing through crossed electric and magnetic fields. The forces exerted by these fielsnd1 kx b1g6pez))kyg;y6kk 7ds 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 orientfixmk:jm. 5v5uetp)f-c4hc(ed parallel to a uniform magnetic fieldcm 4u5 x.epj:c kfvh f(-5)mti of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a currentate:gs4wt gp5xc) *y/ 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 stxq d:l +ejkrw ;ux;7uwut 7y3;raight wire carrying 5.0 A when it is placed in a magnetic field of 0.020 T? The wire makes a7w;u3ux:e qtd;jwy 7uxr kl+;n angle of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long hm. b2:lego1qf,8 r zv2armnb:as a mass of 0.050 kg and is in a magnetic field of 0.10 T. What minimum current in the rod is nm g:.8efq2nraom,: 2vb1rbl z eeded in order for the magnetic force to cancel the weight of the rod?

  A stationary proton is in a uniform magnetic uah4xgra*-: u20ftog0t1 gd ofield of 0.20 T. What is the magnit1xt g-r *g04ug:oahfd2a o ut0ude 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 spe4c qtg0 q5w(ried 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 spee2:y7t(sh wp 3: rfi 3.cwj3a vdiy-qxod 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 wit,m2a(u yu)k 4v kmh:jnh 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 speis/ugl r4 yjq/uocs9s1: 7s:bed 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 ofy+ y3-j6c7-d) nh0kzz cjt(pu4 kjdfm $8.0 \times 10^6 \; m/s$ 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 oy-x msb4sf1 f5 n9eg0nf $3.0 \times 10^6 \; m/s$ 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 carrief*v +b3naldjo c.bxr4+xo) 3gs a current of 25 A. What is the magnitude of the magnetic field at a distance of 0.15 m fro o x+ frjbn+3c*4dxvobg.la3)m the wire?

  A high power line ca h8 h3w t4 i:luysx4v2nr5wx0qrrying 1000 A generates what magnetic field at the ground, 100 wnvxir8uhw44sy:x 3 5 lt2hq m away?

  How much current must flow for nb:9msk0a 51g oa amjh6j4zs) $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long straight wire carrying a cr2ku n6v/f*. vxl4ym jz8j1 njurrent of 5.0 A is the magnitude of the magnetic field due to the wire equal to the strength of the Earth's magnmvju.kj 6ry 482xln jvz1fn/*etic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wire-e8c(dg8qmbv(3qi0 xdg/hyjn *1mhq s carry 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 /gvy- bq*q8 d(38dchm gqhemn(1 jxi 0cm from one wire and 60 cm from the other?

  Two long parallel wires carry curr *-b0uzdwsfexj63h 3vents of 20 A and 5.0 A in opposite directions. Thsz36xb03 fjewh d* uv-e wires are separated by 0.20 m. What is the magnetic field midway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite directiojh(e4bm;h o lo 5c1i5cns. The wires are separated by 0.20 m. jc1h 5loh4m5c;o i(ebAt 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. They are x or go, 68zlxo cd4t)4q1bbz,.pa*lzparallel to the z-axis, and they pass through the corners of a square of side 4.0 cm positioned in the x-y plane. 448 c)lxg6l, a rdxzobz ,o.ozb1* tpqWhat magnetic field does one of the wires experience due to the other wires?

  Two long parallel wire yst,id3v+wv ;s carry currents of 5.0 A and 8.0 A in the opposite direction. The wires are separated by 0.30 m. Find the magidst; vy ,+wv3netic force per unit length between the two wires.

  What is the magnetic igk+;g 9,gfxifh f0 b,field at the center of a circular loop of wire of radius 4.0 cm when a current of 2 ffhgf,xik+g9g ;0bi,.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. What magneticqm+8( esyl/b up- g)du field is produced g) -/8d+myquelsu pb(at the center of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carries a currentb+tv,wxo cl(yaff)- i4;sh6 x of 4.0 A. What strength of magnetic field will it haveof6hx-l xc+s)v4y (i af,w b;t at its center?

  How much current must passem5 .z9ni .2xm/ b 9gnzv8 pu5dabvc.r through a 400 turn coil 4.0 cm long to generate a 1.0-T magnetic fiem9b9zvu. ce8 idrgx nvbp.55./n 2mzald at the center?

  How many turns should a 10-cm lonehg.imr5lebie+ 1 h 3f)pr(a7g solenoid 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 a rectangular loopxmq6olrtuva*8j3er, 3/ d3pv of 120 turns that carries 6.0 A if its dimenemjlv/a pqrvtd33 ou r,3x8*6sions are 4.0 cm x 8.0 cm?

  A circular loop of wir8 cp8y)p0 oes.slfk5we of radius 0.50 m is in a uniform magnetic field of 0.30 T. The current in wos08s .l8py5)peckf 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-sectionalr s0n) /g) y;lq * f9x8vxgvbbkv/swc) 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 carryi dyjrpk56. e9sng a current of 2.0 A is in a magnetic field of 3.5 T. The loop has an arj.s6y k5p9d reea 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 unifoc.yhq1hw-3 udirsw , 4rm magnetic field of 0.30 Tw4.y3 qrh ,-duc1 iswh. The current in the 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 t)43o j5x3iekb5v9f lq( f *mptm)(m v7smqwpradius 0.50 m is in a uniform magnetic field of 0.30 T. The current in the loop is 2.0i o()mqt* mqxfmbpw43vs v3(l 9ft5m5e7 )pkj A. What is the magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop vevjg4rir;7/ 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 single-chargelap q 71rfzpf;o.zdw:bo29b,d 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 wi ow jqv1j5n9o/th 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 magmymo p o+c*.+p gz-d.bnetic field of 0.040 T. What is the radiuo+pmydzm. gp* +bc. -os of the proton's resulting orbit?

  A proton is acceleratedzxef0pkpsirw6 17o4b0m* yg) from rest through 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Determine the radius of the path it ) 7 0gz*6rfppi4yoksw x m1eb0follows.

  A beam of electrons is accelerated through a potential difference of dbl8 2/ark ,mn10 kV before entering a velocity selector. If the B-field of the velocity selectorla8 m,n 2kdrb/ has a value of 0.010 T, what value of the E-field is required if the particles are to be undeflected?