If the north poles of i:+f-s 8uahvsp wwck*w/r2)i two bar magnets are brought close to each other, the magne-s)*:2+8sv upih cwwfai/ rkw ts will

  If the south pole of one bar magnet is brought near thlp;t ijys(6ysh93cs6 e north pole of a second bar magne;sc iyh( 63pljyt s9s6t, the two magnets will

  If a bar magnet is divided5l: l cczm(z8 b5 a1yi*2yzuml into two equal pieces,

  The Earth's geographic North Pole is magneticalt2l;b2b;o j kxly a

  The south pole of a magnet points toward the Ear(4bk *emoqz n*th's

  An electric current pr20ve kx-y02jnazd / ggyj a48toduces

  Which of the following is correctba*he a5 ximx)-p*d m6?

  A vertical wire carries a current straight down. To the east of tp8:l+ anhdu ++d t6huphis wire, the magnetic field 6lhd phtaudu:+n8+p+ points

  A horizontal wire carries a current straight toward you. Fr 70y h1llm(kxtt l).f.;s padrom your point of view, the magnetic field caused by this currentxd.hll7 1(ply. 0a mft)ks;tr

  A current carrying loop of wire lies flatp.l2b f7 o6glmg-q (vhi;/ ttl;o(udl on a table top. When viewed from above, the current moves around t.po/;mlu 6; ( tt2vgfl(h lqi7dgo-blhe 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 wir8owi gu;m+d v*6lpd3xe lies flat on a table top. When viewed from above, the current moves arounixg6d3 m v+l*;w8odupd 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 fiesjc8n4v;cu m3 o gg;a9ld is the

  1 T is equivalent tos)z2) b a,uick

  The direction of the force on a current-carrying wire in a magnetic field is desfm+)0y6ya n5om p tut:cribed by whicho p :)tmmft0u6 5yn+ay of the following?

  The force on a current-carrying wire in a magnetic field is the stc;.oiftzlhs/jeukbn 3 /y 5:;rongest when

  The force on a current-carrying wire in a magnetic+ ds4 lbxe9ny*6g8lb mgud9 7v field is equal to zero when

  A vertical wire carries a current straight up in a region where the m8mqbhtt1. yr 2agnetic field vector pointsth.r1 8q2ym bt due north. What is the direction of the resulting force on this current?

  A charged particle moves and experiences no magnetic force. From this we;(n+ *.fcgm+ixk/kqstz-z ap can conclude tfxszztm+k; kg+i cqpn.*a- (/hat

  A charged particle moves with a constant sf5+an k7/wkyo1ce(c+ry1 e ,f 9peebppeed 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 be maximum wheen+p9 pkawe 5+(y cff1ycbro, e7 /1ken the particle moves

  A charged particle moves across a wuyu60 i3qod(5/:gsfivxui ;constant magnetic field. The magnetic force on thisyuvuqu i0/xw35(difgo 6;: is particle

  A charged particle is injected into a uniform magnetic field sa:3d0 )c rpvqxs5o.dz uch that its velocity vector is perpendicular to the magnetic sdax prd:z5c)qov30.field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in a cie s,:xeaa ;ja4mao px (wn-z(.rcular path in a uniform magnetic field. If the.e: 4x(awoz m-( xap,aj aes;n particle had been traveling twice as fast, the radius of the circular path would be

  A particle carrying a char;.om 4qg5j/pqj:za0eoz5fwh ge of +e travels in a circular path in a uniform magnetic field. If instead the particle carried a c/ 5q; 0wza:ojh5qpfjgz oe.4mharge of +2e, the radius of the circular path would have been

  At a particular instant, an electron moves eastw:gpyfri5r* 7l ard at speed V in a uniform magnetg 5*rlf:p 7yiric field that is directed straight downward. The magnetic force that acts on it is

  An electron has an initial velocity to the south but is observed to curve u2-iwf wzfm7k;pward as the result of -2m7k z ffw;wia magnetic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a region wherzdokl x 0/i uow6f 62o2ozmw05e there is a uniform magnetic field in the +y direction. What is the direction of the magnetic force mf0dz olw0oz6okux22oi /56w on the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced by a long straight current-carrying wbyczfz*lm-y:of j, 4:v2me n 4ire is

  At double the distance from a long current-carrying wire, the strenrwl /wg fl014y0td, jagth of the magnetic field produced by that w010f ga/t ,jl4dl wrywire decreases to

  Two long parallel wires placed side-by-side on a horizontal table carrwafgvr.c0g2 hsv 89 mt:k,)egy 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 mh e: g vasc2)g 0vm8k,fwtr9.gagnetic field at the point exactly midway between the two wires

  Two long parallel wires placb jy6xxs+12 c6r*ef7gb zlfa;ed side-by-side on a horizontal table carry identical current straight toward you. From your point of view, the magnetic field atg 1+6z jcf ebab2;*xl7x6 ysrf the point exactly between the two wires

  Two long parallel wires carry eou/a;g)m r;e , .ougrtqual 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 new force between tuo .mug), g;to/ ra;erhe two wires?

  A long straight wire carries current toward the east. A c2 wo5fvtzn)y,lyf( +cbc 8x)proton moves toward the east alongside and just south of the wire. What is the direction of8t,()cvl cfy5fby2w) +cn xoz the force on the proton?

  A wire lying in the plane of the page cs)frlcma wbx+f7q uf4-ms-w- -5 nqh ,arries 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, +ls7f5-)fc us4qx -rm-bf- amnw qhw,also in the plane of the page, from your right?

  Two long parallel wirelvwx2 g ,2ke.zm*(wskd6odlxxyzz79k0+ y8ys are placed side-by-side on a horizontal table. If the wires carry current in the same directwzys 9z+ddgmk8yxyzl2e07wvo, .lx * xk6(k 2 ion,

  Two long parallel wires are pla:q7 g+ xuop7 2jqoaz0fced side-by-side on a horizontal table. If the wires carry current in op7jq07pf 2q+ugo: azxo posite directions,

  Consider two current-carrying xzv(n rwxpa43 lta7; f4d3/j wcircular loops. Both are made from one strand of wire and both carry the same current, but one has twice the radius of the other. Comparedrzajx w p(3x v4t/w3fnl4 da;7 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 stranxj1o baw 1d*i.d of wire and both carry the same current, but one has twice the radius of the other. Compared to the magnetic moment ofix 1oaw*1dj .b the smaller loop, the magnetic moment of the larger loop is

  The maximum torque on a current carrying loop occurs when the angle betwe r: q8u)zvgavv- 9:fnven the :a vvnqv) 8f-r:gz u9vloop's magnetic moment and the magnetic field vector is

  When placed askew in a 5r-4j p/ ;vmw htaywr6magnetic field, a current carrying loop that is free to rotate in any directiopr 4yjw; r56/mtvw-ha n will experience a torque until its magnetic moment vector

  What fundamental fact underlies the operation of essentially all electric 3 fzujjbm 7sock4v k5v)4-1e vmotorsfue3 v 1z5jvv)j44s-bm7 kcok?

  A circular wire loop lies in a horizontal plane on a table and carries cur/hdz4z* :n wjkku :7jqrent in a counterclockwis ::7ukq4knz/ zj*wdhje 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 pa5ax 2rd o;tla+rticle of 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-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; +xt alro52d

  A velocity selector consists of a charged particle pahw:r ho62.)l,nx is vjssing 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 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 nor :),x2lhjro6i nwvhs. th. 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 mn7fc ds-e32 dnagnetic field s7n 2f3c-ndedof
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a currentj.kfd(ngx ki2( 6jo:c 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 i)2 yygcn,,uhon a straight wire carrying 5.0 A when it is placed in a magnetic field of 0.020 T? The wiuy,cyh )n g2,ire 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 magn:spfubd4zo38 q vr48 tetic field of 0:ordpzs8qft 8v3b 44u .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 eeo1ut;r szw 0b1( 8yiis the magnitude of the 1; w rzb1sty(u8o0eie 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 sdi b1sc.*pe.d gh/y55p2sk l qpeed 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 uzy2.)-,cuokf+g4bf lg2 +7ucg dtqf w-g;otof $5.0 \times 10^7 \; m/s$ 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 dfp u1.+0cqtlr ue north 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 ofn bl6 gs-wfcj+zt0j1ob57x g4 $8.0 \times 10^6 \; m/s$ 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 fl+riz - i9c u.b,nc/vq lx(b8of $8.0 \times 10^6 \; m/s$ 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 jd ;i bc; 5snxa7qi6:zof $3.0 \times 10^6 \; m/s$ 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 wie17c * szv)htrre carries a current of 25 A. What is the magnitude of the magnetic field a7)ehtsv1 rzc* t a distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magnetic field at tcz0r zc5bo 2hjozv1l3 e2-4jmvp *- nbd ldu97he ground, 10 m away?ph 41dl- lc3 j zuzz0bn9dr* oobe-m5jv2 c2v7

  How much current must flow atxyxe/-e75vee 3 i7a xbvw 72for $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long straight wire c j+d b2kwxeiq4o62/p1zanru9 arrying a current of 5.0 A is the magnitude of the magnetic field due to the wire equal to the strength of the Earth's magnetic field of q+r2zdwupx2k b ijeno/9 a146about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents of 10 A in opposite direction5*guxqxv r*abu6r 7 fctn;k+9s. 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 t *xrnvbg9kxa+q*c 5 7;f6uurwire and 60 cm from the other?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite di2xuf-p *8xtwvx *jpo4ao l4 d)rections. The wires are separated by 0.20 m. What is the magnetic field midway betweend8o-t xw*2p*4j)f lxv pa oxu4 the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in oppg ( o+,xzm 9lfjeb+ro(osite directions. The wires are separated by 0.20 m. At what point between the two wires are the contribu++bof(m j 9zxo,lerg(tions from the two wires the same?

  Four long parallel wires each carry 2.0 A in the same direction. They are paralga t/g,2mc1h k:t, pculel to the z-axis, and they pass through the corners of a square of side 4.0 cm positioaucmgc/t th :2,,k1 pgned 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 ofiud99np 8m5cu-z 2 jv.a j1fhu 5.0 A and 8.0 A in the opposite direction. The wires arf2 p1.i9 umd9v -j58uc jahnzue 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 of radius 4.: 3ko/azgc7he5rdbd83j g a.p0 cm when 83ad/.rg:h oagb dk75ecpjz3a current of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. What magnetic wif2z vxf+8xzb3o7) wty6+lu field is produced at the center of the solenoid when a current of 10 A flow6y3bwwz+ +x7f)i8u z2xft olv s?

  A solenoid with 500 turns is 0.10 m long and carries a current of 4.0 A. Wpj ziu;b mp,1)hat strength of magnetic f,j)1 p;piz ubmield will it have at its center?

  How much current must pass through a 400 turn coil 4.0 cm long to glnk p2 +sd7 pt.ot o9 mc3r0xfu7vv6e(enerate a 1.0-T m3csx7rpvn lf+6 9o 7d t0mtp2.v(ouekagnetic field at the center?

  How many turns should a 10-cm long solenoid have if it is 7ac:b x3:q-z :m+ mrtr3ix cvsto 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 turns that carries v2-9 g1 stp5xzgmuir *6.0 A if its dimensions are 4.0 cg1x2 mt*9u prsg5vz i-m x 8.0 cm?

  A circular loop of wire -na 0co5bkp7 c) tmvu 3ipua*2of radius 0.50 m is in a uniform magnetic field of 0.30 T. The current in the loop is 2ou7a)v*- tnmi5 kua3p0p c2 cb.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-sectipljao pj+ l3,6:vyab;1d( ftkonal 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 fieldcy 7yde2 tlgp0r1s3p9zj e:(h of 3.5 T. Th :psd py(rtj9l 0ch273ze1geye loop has 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 uniform:)2-rx( ng6bpe wr cww 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 bww2)e-xg:n(r w r6cpmagnetic field?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic field tf8e:pf-p1 bbs dmfp5i;g5yu/* dzl* 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 magnetzds mf/ld5piyp **et f g:8-fb 51;pbuic field?

  A circular wire loop of ani1q.5i d;j f4iq*dmr9 ov*forea $0.25 \; m^{2}$ 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 7g/tgdw ir;c.(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 vebgjdu t*5j3 b/locity $6.9 \times 10^6 \; m/s$ 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.v(e0:l s8od va0 kV and then moves into a magnetic field of 0.040 T. What is the radius of thos0 (vdea 8vl:e proton's resulting orbit?

  A proton is accelerated from rest through 500 V. It enters a magnetic fic h aq97/aojs*vsk0-p1h8 ,p,zfkg vield of 0.30 T oriented perpendicul/v,ss8akfq o,i ppg9*h7ch zvaj1 k 0-ar to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potential difference of 10 kV befor3esb0w;dbchtl34bvm,hwc, 4e 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 hbm4vb, 3;ww0secdbh t 4l3c, if the particles are to be undeflected?