If the north poles of two bar magnets are brought close to ean6np z,//.zo oy vi+ g;a3acr63inaluch other, the magnets wii aa/3 6i/.; au3prg,lv6oznz+ cynon ll

  If the south pole of one bar magnet is brought near the j4j *(uzzczp( - q4j7(7uf+gtcy o.dqeu ,fyonorth pole of a second bar magnet, the two magnets wu4g ( j yoo .tjzc qcpz4+7u,f7fzed-(*jq(yuill

  If a bar magnet is dsyeq .lsrr)d1 q o q)6sz)wl-8ivided into two equal pieces,

  The Earth's geographic North 667pm ug; ojubPole is magnetically a

  The south pole of a magnet points toward the vaw;553)ndk fnc a0dnEarth's

  An electric current produceso8(z2bc 3af*a/ roejs

  Which of the following is corr o1uivc cepa4*7(2tolect?

  A vertical wire carries a current straight down. To the east of this wire, uz,5 or8vhy5 zqu 9x5+5jxuudthe uou5j5, d vxy59uu5+8zxr zqh magnetic field points

  A horizontal wire carries a current straight toward you. From youw8k qk4ov;o) jr point of view, the magnetic field c ;q)v okok84wjaused by this current

  A current carrying loo:o kyt v/:tta*p of wire lies flat on a table top. When viewed from above, the current moves a:t y/o*t:v katround 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 wire lies flat on a tatcx-:c-yw 0 pmej/r* dxe. rg yy;i;.uble 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 curre x0 rxywte.-md:y cuc/gyreij.;*;- pnt, inside the loop? The magnetic field

  The SI unit of magnetic dxunyl-: 6t m cbi887tfield is the

  1 T is equivalent to5vgbnn57wnn 3

  The direction of the force on a current-carrying wire in a magnetic fie-qd70z our/sald is described by which of tza-7d su 0r/qohe following?

  The force on a current-carrying wire in a magnetic field is the strongest whes6r,6l l s9;t+gxm /1xh n (jkv+i,- ngfltsnhn

  The force on a current-carrying wire in a magnetx6 lo)dy 4*lq-v w /zmvvtt07 jeio(-tic field is equal to zero when

  A vertical wire carries a current straight up in a region where6lby;5yts)o. oatj0n h.+bpd the magnetic field vector points due .a + ht5b60spy.y)t;j bdolno north. What is the direction of the resulting force on this current?

  A charged particle moves and experie.+tat egy2sjjw,hcqm , b x.4-nces no magnetic force. From this we can concluw,qej x.hy- 4a2+g,tbs tcj m.de that

  A charged particle moves with a constant speed through a regi b- (ra:v/upl 1osbop8on where a uniform magnetic field i(ros8bl /-op pa: vu1bs present. If the magnetic field points straight upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constantn6 *06,iu ad7ppm 9jalf*ibuw magnetic field. The magnetic force on fwm09 j,**7i6 uabd 6l npupaithis particle

  A charged particle is injected into a uniform m3 5zj:5xfzskhnnwtuvs9j/ -3 agnetic field such that its velocity vector is perpendicular tous z-vn35hjf z9 jtx/5nwk3s: the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed travek.g76n cy bx0rling in a circular path in a uniform magnetic field. If the parkg nb0rx7c6 y.ticle had been traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e travels in a circular pb+a 2ke 2ejy*jath in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of the circular path would have +ke jy bj*2a2ebeen

  At a particular instant, an electron moves eastward at spy n38 dlszg kav16.;.iglvk 0weed V in a uniform magnetic field that is 8 g;zk w1.y06 lvlgasi.3kdv ndirected straight downward. The magnetic force that acts on it is

  An electron has an initial veloci v0;omz+edty9 ty to the south but is observed to curve upward as thezvd9ty+ e0mo; result of a magnetic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a region where there is a uniforrj+fgnp4sno /(n xi8vz.81 wh m magnetic field in the +y directionnorg1x(n/p 4 w8s+nvhz.j8 if. 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 curr;m, 9psipq-csi, )6q*cn le axifc 01gent-carrying wire is

  At double the distance from a long currentrnls)* -cabr+ -carrying wire, the strength of the magnetic field produced by that wire decreases rr) +nbsal*-cto

  Two long parallel wires placed side-by-side on a hc4hzw-ws d +*e5bgm 8korizontal 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 po4zw* e8+m-c b ksdghw5int of view, the magnetic field at the point exactly midway between the two wires

  Two long parallel wires placed side-by-side on a horizontae 43psw,hn9(-* cgbyzpmrc(nl table carry identical current straight toward you. From your point of view, the magnetic field at the point exactly between the two wircrwcg -( ybhz3m4pe, n*9n(spes

  Two long parallel wires cmdye(w (4 qf)earry equal currents. The magnitude of the force between the wires is F. The current in each wire is now doubled. What is the magnitude of the m(4(e)qfwy d enew force between the two wires?

  A long straight wire carries current toward t yiw9+c+fk:qwhe east. A proton moves toward the east alongside and just south of the wire. What is thwfq+:w9+yik c e direction of the force on the proton?

  A wire lying in the plane of the page caq;9t/:l zv 4n ua-qh2ncpxo m0rries 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 towa pzv-2o4aux/lm9: n0;cthqq nrd the wire, also in the plane of the page, from your right?

  Two long parallel wires are placed side-by-side on a horizontal m ri8-9tnfbd :table. If the wires carry current mti-d bf9n:8 rin the same direction,

  Two long parallel wires are placed side-by-sidni4m t tv* mfg03jy2f9e on a horizontal table. If the w ffmn ig2ty*j9v4t0m 3ires carry current in opposite directions,

  Consider two current-carrying circuwi:0pdpl) j7 n2 itc;qlar loops. 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 centd; p207p:nwt)ijlci q er of the larger loop is

  Consider two current-carrying circular loops. Both are made frtue)-1vr1 :zi kbgqt/om one strand of -tbzqtr vi u)eg1:/1 kwire 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 larger loop is

  The maximum torque on a current carrying loop o/z :rgi8siqk9 ccurs when the angle between the loop's magnetic moment and the magnetic field vectzg:qr iis/k8 9or is

  When placed askew in a magnetic field, a current carrying loop js a q9gkh4,rqs/* mp6that is free to rotate in any direction wk r9sq4s/ p mg6ajq*h,ill experience a torque until its magnetic moment vector

  What fundamental fact underlies the operatas70ti ;3ri(e 2efvriion of essentially all electric motors?7iai2evet fri03s(r ;

  A circular wire loop lies in a horizontal plane on a wpq9z x5moa jt6:f7r;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 q j7 f:mzrxptow 65;9adips 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 o 1*hki-hcm mm2f mass m and charge q is accelerated through a potential difference V and allowed to enter a magnetic field B, where it is deflected in a semi-circulhmc*-1mim k 2har 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, V, and R.

  A velocity selector consistg;c6.leo sz,r s 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 follo.,s6g o;cr lezwing, 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 uniform magnmh,sz, ;bm jb,ll8t w2etic field of;l lb8 ,w,h bm2zstjm,
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a direl i0y1zs3dil )ction 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 am dg6l vzswzz*413f2 g straight wire carrying 5.0 A when it is placed in a magnetic field of 0.020 T? The wire makes an angle of 24*g 6fd13wlzgzmz s v$27^{\circ}$ 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 field vff-8;ib54iz; t f odxof fzi;tdf4xoi-f;v58b0.10 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 is in a uniform magnetic field of 0.20 T. What is the magnivo zw ,iqb1;1t-oe*gw tude of the magnetic i1,e;w-o*ztgoq bv1w 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 speea2tdfz z 5hvt1eg+7 qb*3(s5lmeh t/md 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 spep 9t4y8 r5xqpju ldp4,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 north with speedoc: aj pzuj5(dad,4.v $4.0 \times 10^5 \; m/s$ 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 nh8qyvc; a2b(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 speed o rbf x: tltvaty2.1/*r c,kd,sf $8.0 \times 10^6 \; m/s$ 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 of oq p9m5,x yox 3e ;lv w)b-(cg1-swgrv$3.0 \times 10^6 \; m/s$ 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 25rij*qtdh )1 i3 A. What is the magnitude of the magnetic field at a distance of 0.15 m from the i )1tq*d3ihjrwire?

  A high power line carrying 1000 A generates what magnetic field at the ground, pu;g 5 hvvd2e:10 m awe dpu5v2vhg:;ay?

  How much current must flow .2cfsdmj 8 .o/3:9o kbouojcmfor $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from r:9r4bznsrz exe 56a*a long straight wire carrying a current of 5.0 A is the magnitude osxe 6be49r5 *z nrr:zaf the 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 wire lv*iy6 fe p11ry30 -adls3dnfs 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 cm from one wfvl 13ilyr 6y0* p-d n3de1asfire and 60 cm from the other?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite din;g/:xtj .fet rections. The wires are separated by 0.20 m. What is the magnetic field mjt.;e:t g nx/fidway between the two wires?

  Two long parallel wires carry currents of 20 A 0ap, pdz3zptx 60s fq26nz7dozk/4qcand 5.0 A in opposite directions. The wires are separated by 0.20 m. At what podz,s3pdxkf74qo2z066pt0z np c /zaqint 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 dirnp8nf4*t.:cc jcf c(lection. 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. What magnetic field does one of the wires experience due to the other wire4jn (ccffn .c:* lct8ps?

  Two long parallel wires gtvgcq49b 2y)carry currents of 5.0 A and 8.0 A in the opposite direction. The wires are separated bg byt4gqvc)92y 0.30 m. Find the magnetic force per unit length between the two wires.

  What is the magnetic field at t(5qq1r zen5 ddhe center of a circular loop of wire of radius 4.0 cm when a current of 2.0 A flows e51qdrzq 5( ndin the wire?

  A solenoid 20 cm long is wound with 5;t1nbdk 9lu d:000 turns of wire. What magnetic field is produced at the centddku1;9t nbl:er of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m lonm43urtqi* t 1bg and carries a current of 4.0 A. What strengrqbt1*43 uit mth of magnetic field will it have at its center?

  How much current must pass through a 40u* :hi7 rjc wr0 y8u;,q/szuxjjtlb 020 turn coil 4.0 cm long to generate a 1.0-T magnetic f xqu rj;*izy ru78b/u tc0lshjj2 ,0:wield at the center?

  How many turns should a 10-cm long solenoid have if it is to generate a k;pb:jteb85 i fr k m4n5ug2kv;6o ;st$1.5 \times 10^{-3} \; T$ magnetic field on 1.0 A of current?

  What is the magnetic moment of a k8w 4itve57nr rectangular loop of 120 turns that carries 6.0 A if its dimensions are 4.0 cm x 8.0 i 5 8tervknw47cm?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic fb zo 5 th4/ub:lv;oo8tield 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 perpendicular to the magnetic fi oblbv h: u5;/t4o8ozteld?

  A circular loop of wire of epev3m -yl /i*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 magnetic field of 3.5 T.yyngzrpz ,(h+4.i :ma8r(x -3zuzoah The loop has-(h8hm+ xiz3 u(ay4or,.y r:n agz zzp an 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 unifo7pdvg7d4t 8r qrm magnetic field of 0.30 T. The current in the loop is 2.0 8v pg r77dtdq4A. 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.pd 2lspcg l-7.50 m is in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. What idcs27 p-. pllgs the magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop of ( 15:drwz2bg lm z6 aybtca:1aarea $0.25 \; m^{2}$ 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-cha 3mk8yve2(mjn q4z7pk rged 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 velociin z x4w1q21 :a*okwzlty $6.9 \times 10^6 \; m/s$ 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 throuv; 4dnqj1w jiir)nin *h x(df.42br+hgh a potential of 1.0 kV and then moves into a magnetic field ) ;2b frx.w*1ndn +ihijvh4irq( j 4ndof 0.040 T. What is the radius of the proton's resulting orbit?

  A proton is acceleravv)fj- rkdm,us;s/1cns+ s e kv 2+ac1ted 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 follows.+dj a)1/ns1cfcs2 ,kvm+- su; vvreks

  A beam of electrons is accelerated.o gn0j npg21uw3inj,(mt3wwewg,h * through a potential difference of 10 kV before entering a velocity selector. If the B-field of the velocity selector has a value ofj,hje(w.nnwn *mg3i3o u wgw g ,01t2p 0.010 T, what value of the E-field is required if the particles are to be undeflected?