If the north poles of two bar magnets arebz-jq-7opx9 l 1a7uf z brought close to each other, the magnets l7zjqp9- bx1u o-faz7will

  If the south pole of one bar magnet is brought near tc b9-*ju zao,-rf, nuyog9e-c .mb+bche north pole of a second bara nf9jcou b9,+*cym-oz.e -,r- ubg cb magnet, the two magnets will

  If a bar magnet is divided into two 6 y3*g 5yu *bdmk/tunsa) l)rzequal pieces,

  The Earth's geographic North Pole is magdq5gdr/0 k8j jnetically a

  The south pole of a magnet pointyd pk0u9lw00jdjs; nh.- cnw,s toward the Earth's

  An electric current p+kw6v* i7zm d::yee2:(hr bssu(nhnqroduces

  Which of the followivk9dqawhd ,q(a- o.atia -u:u4gm+0 vng is correct?

  A vertical wire carries a current straight down. To the east of x4+dtycw. ::2ylbsgq this wire, the magnetic fi2 lyyb4sc w+.qtdg: x:eld points

  A horizontal wire carries a current straight toward you. :b/ motgnrrx()f / kh+ From your point of view, the magnetic field causedmgk)x h( /+ftbr/no:r by this current

  A current carrying loop of wire lies flat on a table top. When viewed frzw6d o ,h-sxa s,5:b:3*kfoe4 myetepom above, the curs4xpoh6a fw,tez* 3-m:5d ko:by e,esrent moves 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 loop of wir(, ,/pry xpmn-rfgt9oe lies flat on a table top. When viewed from above, the current moves -, pp gr9fo x,ntymr/(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 jv :0a57cjkwh mai72jis the

  1 T is equivalent tod9 6 m9-rrc.eqpfs w-jp1 ;hbe

  The direction of the force on a current-carrying wire in a magneti72t h.3f7o smaqm(rxb c field is desb hrt3 f7.q2a(mxm7s ocribed by which of the following?

  The force on a current-carrying wire in a magnetthzx5723ux q;ytap7 qic field is the strongest when

  The force on a current-carrying wire in a magnetic field+6 dt2rzzw+ i.qtjew - is equal to zero when

  A vertical wire carriesodx3/ozxx r7-) te h8v a current straight up in a region where the magnetic field vector points due north. What is the direction of the re x)-h7o8/3rxvxtz eo dsulting force on this current?

  A charged particle moves and experiences no magnetic force. From this we can cop( wvrcdrk-vlh;p9+4 nclude v +dpprv;4rw-( cklh 9that

  A charged particle moves with a constant speed through a region w9+fne:gwd0wd6d;vbya7u 8asr zul 5 i-f 32odhere a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting on this particle will be maximum when thegs52ndv u6wdbfoid yf :;9 e aawdlzr7u03-8+ particle moves

  A charged particle moves across a constant z 36cf exssvb;95 qq.kmagnetic field. The magnetic force on 5s.96kzvbfqx3scq e ; this particle

  A charged particle is injected into a uniform magnetic field such that its velk7nmdu;-;me a ocity vector is perpendicular to t;-n um;km7aedhe magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in a circular path in a un;om:w,wh4 s f ((.q d24qnbw)afochi niform magnetic field. If the particle had been traveling twice as fast, the radius of t h44:wwfs q,h ( in2obwaq;d cf(no.m)he circular path would be

  A particle carrying a charge of +e travels in a circular path in af(ulc 8h4d3h y etl6 6*o)xvvaic:i 9a uniform magnetic field. If instead the particle carried a cha*i)h:x6hlfc98v ae4 6aui d3vcl(yot rge of +2e, the radius of the circular path would have been

  At a particular instant, an electron moves eastward at speed V in a uniforz.d vldg *r3 b421.chue*jt kc-;jved m magnetic field that is directed straight downward. Thec1-g vbu 4jezct*vl.d* 3d . hkr;2dje magnetic force that acts on it is

  An electron has an initial velocity to the south but is observed to curve upwa:0b7x(h 8rn yzlnark)rd as the result of a magnetic field. The direction of the magnetic field i)r nb: nlk7zy a0xr8h(s

  An electron moving along the +x axis enter pngmidjvg p, h3i3cu6)k)) 3as 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 cih)kdi63upa)mvg ) ,nj gp33 up, and +z out of the page.)

  The magnetic field produced by a long straight currenthn7 ,i nxb*ra*olw9 6o-carrying wire is

  At double the distance from a long curream;jcm 4qi:y+qo 2y 4unt-carrying wire, the strength of the magnetic field produced by that wire decreaic4am j ;2q4+oqymuy: ses to

  Two long parallel wires placed side-by-side on a horieqp npio6 :54gxe7d l6,c wx6kzontal table carry identical size currents in opposite directions. The wire on your right carries current toward you, and the wire on your left ca74ppci:6dowx,g6e6l 5xnke q rries 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 tab4( xe (fz 6(0mlwleswile carry identical curre e0lm6wz4 ix(f((wsl ent 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 currents. The mztfj 0 x- *)mcns11kyyagnitude of the force between the wires is F. The current in each wire is now doubl*xn01yycz1 s)mt- kjfed. What is the magnitude of the new force between the two wires?

  A long straight wire carries current toward the fipx40+ en x.heast. A proton moves toward the east alongside and just south of the wire.h 4+einfxx0p. What is the direction of the force on the proton?

  A wire lying in the plane of the page h85nb f50o pnwkw )wb;qwgc2* carries a current toward the bottom of 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 righ;bwh50pnfk*bgwowq 2n) 8w5ct?

  Two long parallel wires are placed aose7 o.ayf.cd6o*l 4side-by-side on a horizontal table. If the wires carry current in the same e sc6y.o*o4f.7od aladirection,

  Two long parallel wires are placed x 0j2rsu h5 1)/3dezzhbeb y2tside-by-side on a horizontal table. If the wires carry5ur02ebhbsy/ez) d tzhxj31 2 current in opposite directions,

  Consider two current-carrying circular loop si n2/1c9lr rx3d7i f9wtep;ps. 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 smaller loop, the magnetic field at the centelx2eir9 dp/ 73tncif1r;9 spwr of the larger loop is

  Consider two current-carrying circular loops. Both are made from one strand ofv +kbkg7-x3 sdutn3+n wire and both carry the same current, but one has twice the radius of the other. Compared to the magnetic moment of the smaller loop, the magnetic moment of the largerkb7 k+sn+t3 -u3xngdv loop is

  The maximum torque on a current carrying loop occurs when the angle betweejxx6shi ch-t-k9 -/ ,+v:k sjgg:mqomn the loop's magnetic moment and thsx hokkq:,gi: -+ xj6-hcms-jvg/mt 9 e magnetic field vector is

  When placed askew in a magnetic field, a current carrying loop0(a69kd tmlp)nk eam5 that is free to rotate in any direction will experience a torque until its magnetic moment kmak9(el5at06 np d)m vector

  What fundamental fact underlies the operation of essentially all electtk,h;( -csrtq)r 3bg l* xsnsm.x-1tbric motors?h-.r(1c b rmskl,s)t-*s; xbx3ttn qg

  A circular wire loop w/;acus l/f9j7 dj cj(lies in a horizontal plane on a table and carries current in a counterclockwisej7d9j (f/j/ac u;cw ls 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 magnetic field?

  In a mass spectrometer a particle of mass m and charge q iss;k x.lb3,nu7l:dkp 1rihh,k 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 mbs1u,khnlpkd kl: ih r.3;,x7agnetic 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, V, and R.

  A velocity selector consists of a charged particle passing th m,gkr8)n+ 2w zomo88nx oa)kqrough 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 directed to the north. What direction should the e+k28o zm , k)n8g8rm )aoqnwxolectric field point?

  A 2.0-m wire carrying a current of 0.60 A is orientxv,u4;d 2259 qpxrelmd +nt s tt)eny7ed parallel to a uniform magnetic ;)742lm5qvd+nr pxxttdte2 e9s ,uy nfield of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a direv ,sp -hx+jkz+:1wghdog c)qz )*g)bkction 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 pmuod (x--eb ,hlaced in a magnetic field of 0( -emh,b x-odu.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 ae.g n,: -dpies4wh)x d mass of 0.050 kg and is in a magnetic field of ,n:-xpdgs4)e i .h wed0.10 T. What minimum current in the rod is needed in order for the magnetic force to cancel the weight of the rod?

  A stationary proton h ;a(bb) j 9j7dz:xbkzis in a uniform magnetic field of 0.20 T. What is the magnitud 9a x)z(b7j:dh;jzk bbe 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 splxmf28 cs,zvd4; 3iwdeed 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 speed ofkc )*574drbnjfez 0sb $5.0 \times 10^7 \; m/s$ 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 wivy: ux- (jxn4qth 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 with2x58chg h 3ztb 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 magnetic force of the electron.

  An electron moves with a s6qd dseqngbl6) s0(*g4 j, nafpeed 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*3yiw/ y 5rbbc 3xkil 71ayh8o 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 a current of 25 A. What is thzt(1cq,mfo*7 j 4vnohe magnitude of the mag(t cm*h f,7noz qvj1o4netic field at a distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magnetic field at the ground, 1le( nm w7j0ks3nbl:/y 0 m awayl e/kn0wny7 s 3mbj(:l?

  How much current must fla,tj/4f5l jnnaw fyeg.2o 61 qow 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 carrying a current of 5.0 A is th1gon 71cuh(2d *y cgvzg*1n nme magnitude of tucmhg7 z*n 1do1 y*1gg2(vnnche magnetic 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 currents of 10 A in opposite directio-y: qysr+;ku)i6iv xe ns. They are separated by 40 cm. What is the magnetic field in-ui;)is+yxk6:r yvqe the plane of the wires at a point that is 20 cm from one wire and 60 cm from the other?

  Two long parallel wires carry currents of 20 A and 5.ct5ek l8;)s2/e beils0 A in opposite directions. The wires are separated by 0.20 mee8 2l 5l;s)ks ebtc/i. What is the magnetic field midway between the two wires?

  Two long parallel wires care5d2 njy *lx 2l,l f(vixa*fc):*nehj ry currents of 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 the two wi*fhcvx:l5i,jnle)2e* xdyna( j2 l *fres the same?

  Four long parallel wires each carry 2.0 A in s6 fco2g7 m1trthe same direction. They are parallel to the z-axis, and they pass through the corners of a square of side 4.0 cmgf1o627srt c m 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 s mezt55e2i5y o1y7pf, ifcb;A in the opposite direction. The wires are separated by 0.30 m. Find the magnetic force per unit length between the two wzmib55 c1t25ysie 7,fo pf ye;ires.

  What is the magnetic field at7w4 zhu2xu pl1 the center of a circular loop of wire of radius 4.0 cm when a current of 2.0 A flows in theu4lxpw12z 7hu wire?

  A solenoid 20 cm long is wound with 5000 turns of wi1k f2-cff3jl +ebq 1rcre. What magnetic field is produced at the center of the solenoid when jb+efr31k- lq12 cfcfa current of 10 A flows?

  A solenoid with 500 turns re:hne-sl0jm/ bic:: is 0.10 m long and carries a current of 4.0 A. What strength ofib: jen/e:mh-l0 :csr magnetic field will it have at its center?

  How much current must pass uua4kf l(a/b,kzxw50 9(rrksthrough a 400 turn coil 4.0 cm long to generate a 1.0-T magnlaa z40fu uxw9rk5,sk(/ (b kretic field at the center?

  How many turns should a 10-cm long sole- +bi-+fla4n dwnmgv1d a3bv *noid 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 rectangularg2j/9xoq gx ;v2g6jn.v np0 ec loop of 120 turns that carries 6.0 2g gqjx nepj6 . 2c9vn0;ogv/xA if its dimensions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic field of 0. ;yfze7jje.wdnug030 30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane of the 7yje. 3ewj0u gndz; 0floop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sectio; 9 mqig.ckzgc rtr;4(nal 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 magnetic field l dmuu/8 7 yr,aoyw4-c*v)srrch3-l wof 3.5 T. The loop has an area yodyc lsh rwc *8l/v,-7u43w a-r)murof $0.12 \; m^{2}$ 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 bd zdjlq346i. 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 paraqi 3ddlbjz .46llel to the magnetic field?

  A circular loop of wire of radius 0.50 m is in 9edml 2d)qgr2a 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 magnetic f2 )eg9m2qdd rlield?

  A circular wire loop 0m1w t9dbr4vv 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-char e(t3 9d/19liadvrx ucged 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 velapm 4zj f x)/3qw6sskjd3e.s )ocity $6.9 \times 10^6 \; m/s$ 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 thenpempr5vul +g) cw*+m2t), o ht moves into a magnetic field of 0.05 *m,)l pto+mh)v turecp2gw +40 T. What is the radius of the proton's resulting orbit?

  A proton is accelerated fgl1re)41d,x- trxzh urom rest through 500 V. It enters a magnetic field of 0.30 T orient,-)lgx1 1druxz4t r heed perpendicular to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is akdl82mn hf7*k;zc b2tqzu p-0ccelerated 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 are to *8 7c 0 pk2zmqlud2-bntzhfk;be undeflected?