If the north poles of two bar magnets are broughn ,9u 0xg;0lqjwlyx4ct close to each other, the magnet x lun; clx0y,q94j0gws will

  If the south pole of one bar magnet is brought near the noym3lv4dpav/lfdn4 w: i5f, 4hrth pole of a second bar magneyvfl vln/,: md 4wa5pfi 344hdt, the two magnets will

  If a bar magnet is divided xsezln:v2u6+-xs* m ointo two equal pieces,

  The Earth's geographvc2 1m/lr *bjl0hx01o 0u/qtikpqrk6ic North Pole is magnetically a

  The south pole of a magn;k4/9: w:tb ozcj3pxfd8u7uun 2oqvset points toward the Earth's

  An electric current proyy+bip1vh8/y duces

  Which of the following is corr en 8*b4b8p5- ibif/aa6va vouect?

  A vertical wire carries a current straight down. To tphw) e zi)1x ee*n(*mfhe east of this wire, the magzi* n(eee *))phwmx1fnetic field points

  A horizontal wire carries a cukes6d2um 5 )morrent straight toward you. From your point of view, the magneti)okme6 2us m5dc field caused by this current

  A current carrying loop of wire lies flat on a table top. When vienl. ;at4x5c fnwed from above, the current moves around the loop in a counterclockwise clxn5;t. fn 4asense. 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 on7 4yab fwvcz2. a table top. When viewed from above, the current moves f4 awb7y2v.z caround 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 is td;uin;te pza ex*k9-crc qsx3-qslnlo 1 1(0(he

  1 T is equivalent to/ifeugl4,vcp dbr5 ,;

  The direction of the force i/:l ,nf:bmyeon a current-carrying wire in a magnetic field is described by which of thf:m:lb, yi/ nee following?

  The force on a current-carrying wire in a magnetic field is the stro*y ssf*d513voaw y7dke:2ww yngest when

  The force on a current-carrying wire in a magnetic field is equal to zerom86u;kj h :6kwp8c3dj fru.uj when

  A vertical wire carries a cur( dzg g2tpd es4svl2)7rent straight up in a region where the magnetic field vector points duesds( 2ve4ztg dl)g 72p north. What is the direction of the resulting force on this current?

  A charged particle moves and experiences no magnetic fo zx pwz)32xck9rce. From this we can conclude w2)xpkz 9x zc3that

  A charged particle moves with a constant speed through a region whm hdv+4b 2 e1,fi9o xw5ys,lveere a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force2v,dfbm y4oesw5x,hv 19i+ l e acting on this particle will be maximum when the particle moves

  A charged particle moves across a constant magnetiv76;eox.7rk0vcveh ww, , g eyc field. The magnetic force on this pae .egwe,0k;xc hrv77 yv6owv ,rticle

  A charged particle is injected into a unifor-., zs*kna9r,2dhk ll dsrk*k m magnetic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring thek9kr. *d,2k a,dslrz*ls nk -h particle's weight, the particle will

  A charged particle is observed tr-w3 ) ecy3v,q me,wr e.9caihdaveling in a circular path in a uniform magnetic field. If the particle had been traveling twice as fast, the radius of the circular c )ve wiwe3me.a3r9dhc-,yq, path would be

  A particle carrying a charge of +e travels in a circular path in a uniform magnem,/y zu3/fvu ztic field. If instead the particz,3yu//mz f vule carried a charge of +2e, the radius of the circular path would have been

  At a particular instant, an electron mhi5;yaw k+ tpy og0g/k (dpm89:2sdqa oves eastward at speed V in a uniform magnetic field that is directed straight downward. The magnetic forcew d d5ky+i gqa ;gp28spa :k(t/9m0yho that acts on it is

  An electron has an initial veloo c7jl 9-mjgd- z8ph-ucity to the south but is observed to curve upward as the result hu-7j- jl8m p9- cdozgof a magnetic field. The direction of the magnetic field is

  An electron moving along the +xi;zof)r )oa,cky5vi , 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? (+a5;z )oi,k)yfrci,ov x to right, +y up, and +z out of the page.)

  The magnetic field produp xju8 kz.vspl- 0,d9lced by a long straight current-carrying wire is

  At double the distance from a long current-carrying wire, the strength o*)7drm51xjyn +b 9iknkm+k jjf the magnetic field produced by that wire decreases1knimj+kmd 7j9brk+ y*nxj 5) to

  Two long parallel wires placed side-by-side on49v4ww y)q q/chwwv0y a 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 the yc/wwhy90w4v) wq4qv point exactly midway between the two wires

  Two long parallel wires placemgjt.n8 ly s8n. ,h9kid side-by-side on a horizontal table carry identical current straight toward you. From your point of view, the magnetil,9 8mj n.g.8ht siyknc field at the point exactly between the two wires

  Two long parallel wires carry equal c*wst b/a4jpshiaq/4 u :xz8c x 1u,zs9urrents. The magnitude of the force between the wiretb uiq:zx,ca*94w /8ss 4xsazjuhp /1s is F. The current in each wire is now doubled. What is the magnitude of the new force between the two wires?

  A long straight wire carries current toward the east. A proton movt /3t) w1jmx.6zksfx les toward the east alongside and just south of the wire. What is the direcx 6 sw tz)xlt3/.fm1jktion of the force on the proton?

  A wire lying in the plane ocgu.p3bq8m *3vc4b.th) ylmg f the page carries a current toward the bottom of the page. What isvumcg)mp*3 hq lc. 34 bbtg.8y 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 right?

  Two long parallel wires are placed side-by-sido 44 y8+j 4sohyuywi;fe on a horizontal table. If the wires carry current in j;woiyuf 4 8+o44yhys the same direction,

  Two long parallel wires are placed side-by-side on a horizb s,h w1 0/elc2-rhjoiontal table. If the wires carry current in opposit/r hei12b j-wch,o sl0e directions,

  Consider two current-carrying circular loops. Both arewivd2 p1hu2 u5 made from one strand of wire and both carry the same curreuuw 12vi h2d5pnt, 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-carrying circular loops. Both are made from one strand ofnbv8u;1 fwb0 s wire and both carry the same current, but one has twice the radius of the other. Compared to the magnetic mfw0 81b u;vnbsoment of the smaller loop, the magnetic moment of the larger loop is

  The maximum torque on a current carrfsb 5ia):7o r3 . p(fadnxt50o0sv jhuying loop occurs when the angle between the loop's magnetic moment and the magnetic field vector ptfosh)f7:an.(os 0ai5 b3u50vdx jr is

  When placed askew in a magnetic field, q u)7gse.eqscbv 4a4,a current carrying loop that is free to rotate in any direction will experience a torque until its magnetic moment vec.4 seavq4sbc,u )q7e gtor

  What fundamental fact underlies the operation of essent z2bw )na1(0 ,wfbk,r hl6skijku7-sn ially all electric motors?fn k h az2b60(ws,r n7iw-,ubjl)sk1k

  A circular wire loop lies in a horizonyuf6at da gvytsjz5883 )-wx(tal plane on a table and carries current in a counterclockwise direction when viewed from above. At this point, the Earth's mx8u gy 85f-3a6wzjv )dys(tta agnetic 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 u1czgu 1l -5jlmass m and charge q is accelerated through a potential diffeu uc15 j-1llzgrence 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, V, and R.

  A velocity selector consists of a charged particle passing through crossed rz-./:wyd5kw kk y1hzelectric and magnetic fields. The forces exerted by these fields are in opposite directions, and only particles of a certain ve.zwd-hyk/y k w5z1:r klocity 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 c(1yj6p gdby 1hurrent of 0.60 A is oriented parallel to a uniform magnetic(1gyby1p6d h j field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a curren)x p;je+agyc3t 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 6u6p+;fgdgg ,k6 apvton a straight wire carrying 5.0 A when it is placed in a magnetic field of 0.020 T? Thg6 +6tkav gpdu,;fp6g e 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 magnetil-( v hkdpmh86c field of 0.10 T. What minimum current in the rmkv6p 8(hldh- od is needed in order for the magnetic force to cancel the weight of the rod?

  A stationary proton is in a uniforvd, ,lkkng(e v s)i(r2m magnetic field of 0.20 T. What is the magnitude of the magnetic force on the pl2(kdr sn)ig v,(k ,veroton?

  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 o9 9a1sv s.tura speed 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 spebdqx)td y1.5 ped 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 wigfhp1zcly -kd3g z 7.7th 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 widld ,b)e ruxgmgtpj/,dx639 08z-rc rth 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 spen/,k c/b gcy77e+w wqjsr3 uf:*evot2ed 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)zen 682tafn u1ugu d+ 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 xj qn z/y ,.8dnollqk)7 w0k,ecurrent of 25 A. What is the magnitude of the magnetic field at a distance of 0.15 m from they e n80l w7zlok.,dq/)jnk xq, wire?

  A high power line carrying 1000 A generates what magnetic fie-c)i)pgb9mg c5no x (gpup5b/ ld at the ground, 10 m away?)5-n igmp) 5p cg/gb oxubp(9c

  How much current must flow fox.e.3 xo vb(fxr $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long straight wire carrying tz wgu.wy1i(+ a current of 5.0 A is the magnitude of the magnetic field dugy(1wi+wzt. ue 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 d nh2syr )-6fbwirections. They are separated by 40 cm. What i6f-)2ry nhwsb s the magnetic field in 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 5v 0pf+g (iaq;r.0 A in opposite directions. The wires ar0 fiap;g( v+qre 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 direc smrauu 02x; q3(yoqei0we+8e 8 6nmcqtions. T roe 8qen0s qau8 (6+;0m3ieyxwuq2c mhe wires are separated by 0.20 m. At what point between the two wires are the contributions from the two wires the same?

  Four long parallel wires eachk b s7(i+u -pb fo+wbclq4-*vs carry 2.0 A in the same direction. They are parallel to the z-axis, and they pass through the corners of a square of-4b7 wf s(-b*ikqso uv+ bc+lp 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 in2sy2/jyr txva/c13.d. g ekwh the opposite direction. The wires are separated by 0.30 m. Find the magnetic force per unit length betgwx/2yjs2.vd1 t3 /cayh k.reween the two wires.

  What is the magnetic field at the center of a circular loop o lqj6s( ,i(p2bwcxvki8ng bu.m+ ))ndf wire of radius 4.0 c(nbqv jp i+6m)wcg b).i, (s8u xnl2kdm when a current of 2.0 A flows in the wire?

  A solenoid 20 cm long iyq5ov6tgc l2.sae8- as wound with 5000 turns of wire. What magnetic field is produced at the cen. 65vl tgc2aqa8yo-ester of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns isn y:li9y z(4qe4 cymv1 0.10 m long and carries a current of 4.0 A. What strength of magnetic field will it have at its centq1y: nivye(4ly9c 4z mer?

  How much current must pass through a 400 turn co k,m7k0oq+efthdt: 0 x+p cl3qil 4.0 cm long to generate a 1.0-T magneth+dk3tx c0:epqokq0tm f,l7 +ic field at the center?

  How many turns should 02zf ;vj x jc(gndt oe-k-lpt/6xp(p/a 10-cm long 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 loop of 120 te*r6gta :mgk6euex3 (6,syd: 5h5fb iod 7 liqurns that carries 6.0 A if its dimensionqe6 m5g o*6g5hbd r:eyxkeud67 ifl,(:ist3 as 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 0egk58v 7pg1bb :q;50ss a(otfxmd 3sp .30 T. The current in the loop is 2.0 A. What is the magnetic torque wd8 psso:pa gt5k3g1vxfb ;0e (sm57bq hen the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sectional area l2aw6e) 7zdoi$0.12 \; m^{2}$ 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 in2; wkefip g.4 t8fnvs,er2 z,q a magnetic field of 3.5 T. The loop has an areas 8qzpv4rkwnfi. 2 ge;,fe2t, 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 u2b:0i un. sjjis 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 magnetic fieldn0u :si2ujj.b?

  A circular loop of wire of radiuss(x16( rnno7cq3: fxb:4jx w9u ejv vdn( ;hsb 0.50 m is in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. 6 hdbn:xsq (bnw3nv( oer1sc(xf4x7u 9:jvj; What is the magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop of are2qr z: h brs/wi,rx/q.4itbq /a $0.25 \; m^{2}$ 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-charged particle (charge ea1s;u *lsa-bsbc ff+-) 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 velocityp g:l6u1eit1m $6.9 \times 10^6 \; m/s$ 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 app . e (bcs01s7:fa iszpd:g/w potential of 1.0 kV and then moves into a magnetic field of 0.040 T. What is the radius of the proton's resulcf:/ge p sz7absw(1dps0: i .pting orbit?

  A proton is accelerated from res vafd 5a5dzbgt(h4 a:kx9b1 egb,ey6 yiwo(, ;t 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 f6(d iebhkdo5 fa95 vezytw;4xb ,(gba,g1ya: ollows.

  A beam of electrons is accelerated through a potential difxop7.fe p 9:t4 yx:bxcference of 10 kV beforep.7foc9y:x4 bt e:xx p 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 be undeflected?