If the north poles of two barbwj6u- oje0u s0g+wv ;;h es6fm;jk3ymca)a ; magnets are brought close to each other, the magnets wi 6b a-)jjsv6cmk;ue;w 3;s eh+gawyojf ;m0u0ll

  If the south pole of one bar magnet is brought near the north))xvcu4p +zy qvy2/vf pole of a second bar p4v /f yyc))x+uzvvq 2magnet, the two magnets will

  If a bar magnet is divided into two ehr 4du(;,mds xqual pieces,

  The Earth's geographic North Pole is magnetically dg+5up(4 j ktka

  The south pole of a magnet points toward the E29oz1j d4qwq sawqh9 7+f;ihjj e4ti 6arth's

  An electric current proh;7 gnnouvoxv )f0 a v;/okhpa ,9(j;yduces

  Which of the following is correg5 6jcc 6s +m9lsdnr4ect?

  A vertical wire carries a current straight down. To th (cr z9pzlz+elm ,cit2/mmu to7.: j1pe east of this wire, the magnetic f it,zmo( rl9c1mp+/7:czlt mzpe .j2uield points

  A horizontal wire carries a current straight toward you. From your pointcmy3*r. ) p/ batj.l6ulfmof4 bvj) 6q of view, the magnetic fiebva)fyp *4j. qjmb) ut3 6 or6f/m.llcld caused by this current

  A current carrying loop of wire lies flaf:m+yx.j rt;r;ip 9iq t on a table top. When viewed from above, the current moves around the loop in a courm+rfxj qti:py9.; ;i nterclockwise sense. What is the 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 a table top. When w q q6yj g.ewtc (5y -a4tydl0:xg3y1liv)a2rviewed from above, the current moves around the loop in a countercloq4rcljy1tayw0xiqa )e t ygy6 2(. -dg3v:wl5ckwise 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 is t rn1e ;cs:rzzr+-c-o phe

  1 T is equivalent ton9j-r9ek/ ndq

  The direction of the force on a current-carrying wire in a magnetit9g v-l-3f *0qiimnaec field is describm30 vt-e laf-*ingq9ied by which of the following?

  The force on a current-carrying wire in a magnetic field is thg7htv ;czu 2y -y,+nlze strongest when

  The force on a current-carrying wire in arh b+ *jwf4i)1g8yrhq magnetic field is equal to zero when

  A vertical wire carries a current straight up in a region where the;odm z zfwlmv;qg366 7 magnetic field vector points due north. Wqmmo wfdzg7;;zl3v6 6 hat is the direction of the resulting force on this current?

  A charged particle moves and experiences yrip)a,oiu 6) no magnetic force. From this we can conclude thati ,ayoi u6p)r)

  A charged particle moves with a cof5j8hq*hfzh1 nstant speed through a region where a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting on this particle will befj*8h1zh 5hfq maximum when the particle moves

  A charged particle moves across a csvhjdvwe8;pgui1k(ahf-j.88 h d -n1x* d-tp onstant magnetic field. The magnetic force o jghd-.d j8hp -d1k*v8;xt8 ash(- upwe1infvn this particle

  A charged particle is injected into a uniform magn c9)n xxe7:ivl51qkbxetic field such that its velocity vector is perpendicular to the magnetic field vector. Igqc 9l:)x1b7ie vxxn 5knoring the particle's weight, the particle will

  A charged particle is observed traveling in a 9x2lwz a cm8z jmjy(;8circular path in a uniform magnetic field. If the partz ;lmzyw9(a8c8 jjx2 micle had been traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e travels in a circu(us 6 px1o vxgo0/t0vclar path in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of the ct0v ovxso6(xgu/ p01 circular path would have been

  At a particular instan3m nfl; b u,mcwwnrkvsox d6jrn3,- zl6 *,u44t, an electron moves eastward at speed V in a uniform magnetic field that is directed straight downward. The magnetic force that mu3n ldc;4z j,fm,u w nbw,o-xv4* srrn6l 63kacts on it is

  An electron has an initial velocity to the south but is obsywk45 *:utznk erved to curve upward as the result of a magnetic field. The directkk4 y5wuz :tn*ion of the magnetic field is

  An electron moving along the +x axis en2dxk-o0 njw* 2l:va0lw z jz(qters a region where there is a uniform magnetic field in the +y din*ajz0l( w2-wvjqk:ld zxo 0 2rection. 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 produced by a long straight current-carrying wire x.4;k **qor xfr+ yu/ud6yybiis

  At double the distance from a long current-carrying wire, the streng.e kylg0rc9e i0to6/( 0lj tuith of the mag06( tot/i9kyje0 c.r0 ge ulilnetic field produced by that wire decreases to

  Two long parallel wires placed side-by-side on qt8 n4l5nqez5-jhe k/w rs** 1lr.+tn5gwspla 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 th l1 /+nztqn-he**wlrsts5 gkr5w jeq8 l.p5n4e point exactly midway between the two wires

  Two long parallel wires placed side-bc z ugp,:c s;s2 qkyh65w*q*oxy-side on a horizontal table carry identical cu2g5s qkx yqo** hpcu,csw6:; zrrent straight toward you. From your point of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal cubukrpt.( *cu ;rrents. The magnitude of the force between the wires is F. The curren( t.c;bpruku*t in each wire is now doubled. What is the magnitude of the new force between the two wires?

  A long straight wire carries current os+ ak 8 b;u-t5,zne unr9;e/d1avgdwtoward the east. A proton moves toward the east alongside and just south of the wire. What is the direction of the force on t1t ueaud- og,br59v/ezk;w n 8as ;n+dhe proton?

  A wire lying in the plane of the page carries a current toward the bottom o z,7yj o,clnp;f the page. What 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 rightc; onylp j7,,z?

  Two long parallel wires are placed side-by-side 9ryohmo8-neg d9es;.on a horizontal table. If the wires carry current in the same direc.8h;od-gnr9om9e s y etion,

  Two long parallel wires are placed side-by-side on a horizontal table. I 0gf:9dyp7gtn hal0lclys2: 8f the wires carry curc hlg8 fsy:n0la7g 90d y2lp:trent in opposite directions,

  Consider two current-carryinguu1fon+z-n*5+n vz*fqnl*nx dg- 9ft circular loops. Both are made from one strand of wire and both carry the savuun-f tzo qn- n+91* 5x+dz* *nfgnflme current, but one has twice the radius 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-carryhz4o y8rb0 e5ay4q7fxing circular loops. Both are made from one strand of wire and both carry the same current, but one ha5x8abhor 7 qyzyfe 044s 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 o.tr s jlp8:1j2mud r;en a current carrying loop occurs when the angle between the loop's ma8e:j1.2sm;l rp r tudjgnetic moment and the magnetic field vector is

  When placed askew in a magnetic field, a curs0de0us. r m+knu : 6foytx/m:rent carrying loop that is free to rotate in any direction will experience a torque unti etor0mdysumn xu/:6+f:k .0sl its magnetic moment vector

  What fundamental fact underlies the operation of essentiall .5;7bjguc 5zrfi-/ll1 fhhcx y all electric motors .b 1ghlfu/hl5ic-j;fczxr7 5?

  A circular wire loop lies in a horizontal plane on a table and carries current ybo(gyn.cj 0 5in a counterclockwise direction when viewed from above. At this point, the yynbcg.(j5o0 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 magnetic field?

  In a mass spectrometer a particle of mass m a z ,3 cu;d79exdojvjj3fd:k c+nd 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, Vc:+kv339j; fj xedcz7 dd, ouj, and R.

  A velocity selector consists of a charged particle passing througcmf (cvh2t4x0h crossed electric and magnetic fields. The forces exerted by these fields are in opposite directions, and ovt mxh40f c(2cnly 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 oriented parallel to a vf d*/56ixsaf*h.* ki/i x fonuniform magnetic s5 **kix/ /.on*6fi fhdafvxifield of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a curra ovudr3gy+ 9-ent 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. ;s7 mlj4q (.zjudzsq is placed in a magnetic field of 0.020 T? The wire ma7uml.;d(qzqsz j .s4j kes 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 * xf *sqqxdve-8 4wf2lfield of 0.10 4qfvx-df*l xw8 2 eq*sT. What 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 the mag5xvmf j;sg777lpyfy) i.lf*s2 gjwx 1 p2(hqdnit(dp*q7fhlvx lf gj) p2xf.yisjs1m7y5 w;g27ude 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 speed of y/s j7n e6:zta51edkgnfq2m6$5.0 \times 10^4 \; m/s$ 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 speealv rx/ ye3;-e sgkqfu7l/b4(n-3w f cd 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 north1yb4mbfg ; f(.b ye9): ishzex 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+ 2icvax5i m0 +mwge;b 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 speeys-s,wv3y- j* cxx+s-3gny4l bbfb o-bil- )fd 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 - je8mofs::0)v)tbaot3ju a rof $3.0 \times 10^6 \; m/s$ 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 cut4he+2 e q 4hu kn5t-rtc4ht(pxofr2,rrent of 25 A. What is the magnitude of the magnetic field at a dist5 ttpru n,hhhx(qtk 2e+of2 4c4-ert 4ance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magnetic field at the grab0c7rartpte w:1e 46 oiz0pa-4, iw9 fg tu0nound, 10 m , 1toitewp-r6ga:wi earz40 ut04n 9fp7ac 0baway?

  How much current must flow for1tx3m 6 bkmy,h $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long,uqn c;nn b.s1e3 h;ae straight wire carrying a current of 5.0 A is the magnitude of the magn . n ash;b1;eq3,ecnunetic field due 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 curxpz9do tiy s /akue j6a7b)z023wm)ur p.c 3.rrents 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 the arer3)jbd tp yuzmi kc. w93u702 6ap)osz/x.other?

  Two long parallel wires carry currents of 20 A and 5.0upx/ifwh u3(ajgjw- g l:/j 3- A in opposite directions. The wires are separated by 0.20 m. What is the magnetic field midway betwi--juj (w waf/g3pljg:3u/xh een the two wires?

  Two long parallel wires carry currents o i2x(l +62vfufgfw:mc f 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. At what point between the two wires are the contributions from 6w+vf 2:gi2 uffml(cx the two wires the same?

  Four long parallel wires each carry la)rg3l 0yg 6huig (2z2.0 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. (0lzhuig)y lg3r a2g6 What magnetic field does one of the wires experience due to the other wires?

  Two long parallel wires carry currents of 5.0 A -x4fgfb.dd pf - rg4.3r)gfhcand 8.0 A in the opposite direction. Th4fd fx .rg3--.pg gfc f)hdrb4e wires are separated by 0.30 m. Find the magnetic force per unit length between the two wires.

  What is the magnetic field at the center of a circular loop of wire, 2/p./wq. ptgj (dis ocrccn8 of radius 4.0 cm wh2/ijco8.r wcsn/gqpc p( .d,t en a current of 2.0 A flows in the wire?

  A solenoid 20 cm long is woub: 1)a.dghifi nd with 5000 turns of wire. What magnetic field is produced at the cen: h.gbdif )ai1ter of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carries ya ny(s.gpw/ 0w(*m /p. swaxaa current of 4.0 A. What strengy.w.pas sw mgw /*0(/(anapxyth of magnetic field will it have at its center?

  How much current must pass thror +qm8f8geuo 9nh 0)jp:nsw;hugh a 400 turn coil 4.0 cm long to generate a 1.0-T mmns +h9oug; new0: jhq8)8 frpagnetic field at the center?

  How many turns should a 10-cm long solenoid have if it is to generate a avbyrp5 j djmcv:t4+ h6,1e6 t$1.5 \times 10^{-3} \; T$ magnetic field on 1.0 A of current?

  What is the magnetic mome6(/pu xjs o guqth030lnt of a rectangular loop of 120 turns that carries 6.0 A if its dimensions are uhout pqs(x 306jl 0g/4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform magnev,0s4gvk** h z+orhobtic field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when tvkz4or ,hg0o+*s h vb*he plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire o,s fq. f-z7)eem(bkkof 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 carrying a current of 2.0 A is in a magneticj8i4o. e d 1ptc7f*mzj field of 3.5 T. The loop has o14d *ftz pj j7cei8.man 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 uniformd d 2o8g yfc/ t)ted-e.3qsx ,tl9x,jt 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 id/c) ,lxt9.t 8teo ,-fgtd2 yxd s3qejs parallel to the magnetic field?

  A circular loop of wire of radiuq2m,sdhk/ zy v5* nga: dei/s2s 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 parallel to the mdgim* s/an:hyk5ze,s/v2 q d2agnetic field?

  A circular wire loop of agt;uj ka3gokq ;9d *z5rea $0.25 \; m^{2}$ 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 sib5vtp, bkw vneq:(qm3 6dq0u 0ngle-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 w4nd;c igv 7k7vith 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 oknvhq2 0ic() xbol;d1f 1.0 kV and then moves into a magnetic field of 0.040 T. What is )d 2i 0ohq(c ;l1bkxvnthe radius of the proton's resulting orbit?

  A proton is accelerated fro uv+u, 0zdoq( e/i6(8 lxlojxim rest through 500 V. It enters a magnetic field of 0.30 T oriented perpxv68l /xo iz,(qo de0(jl uiu+endicular to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potential 4)kc k lsk;4gedifference of 10 kV before entering a velocity selector. If the B-field of the velocity selector has a v;)c k44s ekgklalue of 0.010 T, what value of the E-field is required if the particles are to be undeflected?