If the north poles of two bar magnets are br-v-: r: 3tkka bs7w nrhy-qc:wought close to each other, the magneh: rswrq7 bc-w-a3v k:ytn k:-ts will

  If the south pole of one bar magnet is brought near the nortw9h*jd nrfac;46 a1t fh pole of a second bar magnet, the two magnecjfa *1tr; ndf4 9haw6ts will

  If a bar magnet is divided into two equal piec*q h4br w9 an8(aojpu7es,

  The Earth's geographic North Pole is8;;n v-j,fe zcifu-na magnetically a

  The south pole of a z ekhf bk.o2+3magnet points toward the Earth's

  An electric current prodzdy s5 w+b);0+lhzy keuces

  Which of the following is hf6.v:agnwlr uq/7/hike70czi. j x)fn+5 trcorrect?

  A vertical wire carries a current zr80q8c qb3+cq(bp a /whk ybm2+hv.vstraight down. To the east of this wire, the magnetic field pointh+h v23wr b08/.8p(cakc bqqmqvb +zys

  A horizontal wire carries a c5lg t+ipxnxj.7hdw0uxb3 +t 3 urrent straight toward you. From your point of view, the magnetic field caused by this curren5dx+uxng3 lwh0.b txj7 +3tpit

  A current carrying loop of wire lies flat on a gratq5-. snnc +h 7 bohb-/.f.mx fo*etable 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 current, outside the loop? The magb5tf* gc..n+/.aon ex 7qobm --sh fhrnetic field

  A current carrying circular loop of wire lies flat on a table bh1xqigdl c3k zz*s -;hmcb-*3 k6p2wtop. 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 current, inside the loop? *dmg 2zscbhh3;*z--w bcl6 qipk1k3x The magnetic field

  The SI unit of magnee ed9owcqj4;*tic field is the

  1 T is equivalent to8juwa:aar6 tac3gz- j7okas 9,,r- nc

  The direction of the force on a current-carrying wf3 8nxjl9 zi;jire in a magnetic field is described by which of the follownz;li 3xjf9j8ing?

  The force on a current-carrying wire emr (: bdanv:hna4d(ujb; x + 1./mhaoin a magnetic field is the strongest when

  The force on a current-carrying wire in a magnetic field is63 pgkr1ijz 3.4szsfp equal to zero when

  A vertical wire carries ex1 zmb /j( 2l0yrnl:oa current straight up in a region where the magnetic field vector points due north. What is the direction of the resulting force on thioz:lmlx2 j 0y(/ren1 bs current?

  A charged particle moves and experiences no magnetic force. From thisyxl83mwq ypz7g mt5ox)l .;c3 we can cowglym ;)3pcl37 t xmy.zoq5 x8nclude that

  A charged particle moves with n,-4 3apkaf/xvq-brt dwdxt(a y8 6n;w i-- nsa constant speed through a region where a uniform magnetic field is prkdwwdr6yfa4ns3t-b/vnan t -ia;, 8(pxxq -- esent. 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 ab 1ku2:a(a jhl..up oijs ly30v2 p gkhix2e-3 constant magnetic field. The magnetic force on th2u yi(ppi1egus3-x.k 3h k lj.ob:0l2h2jvaais particle

  A charged particle is injected into a uniform magiaeb. pv1kgs(1rv)o 7q ,(/ hvj8fh 4fnmnja7netic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring the particle's weightgvae r,sjnk1hm(f/ (a v7 vbn.147 q)i jof8ph, the particle will

  A charged particle is observ4 ;t qm2ujzm+n9fgfir. +gv )qed traveling in a circular path in a uniform magnetic field. If the particle had been traveling twice as fast, the radius of the circular pmqij.t92v+qgrf z)+ fgu; 4n math would be

  A particle carrying a charge of +e travels in a circular path in a unifo c c00 lrwzi32h)0qpqirm magnetic field. If instead the particle carried a charge of +2e, the )0cq riqc0302h ipwlzradius of the circular path would have been

  At a particular instant, an electrong11 8 jz/jphyi q:t7qv fb2*uu iyha3* moves eastward at speed V in a uniform magnetic field that is directed straight downward. The magnetic force that aci pzijja3*u7qy h1b*2g8 tuyqv: 1f/h ts on it is

  An electron has an initial velocity to the south gja ia4m (fnlci8nakp 19 63 a*,8boaxbut is observed to curve upward as the result ofal6a4gkia 1ax n3 pj,bc9(8nmoifa8 * a magnetic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a region where there ylla47t:mjx() )b akr tn4r*+av r+ma is a uniform magnetic field in the +y direction. What is th*y+ ra)4vm+k)4btlt j(xr :anlra7ma e 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-carry ,rmk6qg vy0g*ing wire is

  At double the distance frogh 6 pi)j0xz(s5th8sbm a long current-carrying wire, the strength of the magnetic field produced by that wire decreasesb) jsszhpgi6 05 xt(h8 to

  Two long parallel wires placed side-by-side on a horizontal table ca34 hu4wd9e3pwhglws0e ( fqf/rry identical size currents in opposite directie 349 wh3 ed/4p0uswlgf(fh wqons. 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 point exactly midway between the two wires

  Two long parallel wires placed side-by-side on a hok .p0*1ll3 1kwcew yrsrizontal table carry identical current straight toward you. From your point of view, the magnetic field at the point exactly betwc10k y.swk*ewlpl13reen the two wires

  Two long parallel wires carry equal currents. Tbj.hr (kyjlypy7ay r17;w5v9he magnitude of the force between the wires is F. The current i yywrjkhp(1 bjy9 5y7;v.rl7a n 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 moves toward the 4e75,lf iuw gf;x0/euh.msov east alongside and just south of the wum;7 /ofs45egl,0x hfui.wveire. What is the direction of the force on the proton?

  A wire lying in the plane of the page carries ag- s s,u*lvj1c 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 rigg,-j 1sc*usv lht?

  Two long parallel wires are placed side-by-side on a horizontal table. I;wuq f+arbv*j7551;0+ udyjw byaehf f the wires carry current in the same directionruwv+d bfabaj*q50+juye w; 5f;1h 7y,

  Two long parallel wires areb:o xrwga ,,lmy;zf;ov h33 2s placed side-by-side on a horizontal table. If the wires carry current in opzowv,xf; br3ym 3o2 ;s:aghl ,posite directions,

  Consider two current-carrying circularl9mg6/ s2r i)tef 5hfr 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 fiet6smlgh f 2if)e5r/9rld at the center of the larger loop is

  Consider two current-carrying circular loops. Both are made fromn;q iagl f5 55lgy1fme z5l-3k one strand of wire and both car f5 1lm5e5iygf-n35la;g zkql ry 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 occurs when the angle between tmd3ifrs9vzof *k: 78 ahe loop's magnetic moment and the mag7 a vi83s9o*ffmdkzr :netic field vector is

  When placed askew in a magnetic ;8 7vx *fnnuutfield, a current carrying loop that is free to rotate in any direction ;utn8nux7fv* will experience a torque until its magnetic moment vector

  What fundamental fact underlies the operation o1(ue+nn,id :t-aa:m whe oox)f essentially all electric motors?eh+ni (u:)daeoa n :wo -1txm,

  A circular wire loop l6qoz. s-h dc-yh4io- xies in a horizontal plane on a table and carries current in a counterclockwise direction when viewed from above. At this point, the Earth's magnetic field points to the north a o-46zxdo-hi cy hs.-qnd 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 is a7 phes66eu94 ;q o jlpqfho8(gccelerated 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. ;6lqgo9s uh he(8q6pf 7jeop4

  A velocity selector consists of a charged particle passing through crossed v 0sj-y8xn6v uelectric and magnetic fields. The forces exerted by these fields are in opposite directions, and only particles of a certain velocisx 8-vvnj0yu 6ty 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 / c e1+y -:qfhwa8ycxyis oriented parallel to a uniform magnetic fieldyf1y -ey c/xch :q+w8a of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10r a j6s .l,d-fiauq8s0 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 o4b.k bjg)y .mm d9tfuq;g.*uit is placed inkgmyu.f;dj4gb. m9t* uq) b. o a magnetic field of 0.020 T? The wire makes an angle of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long 1 v;+e(uootuo has a mass of 0.050 kg and is in a magnetic field of 0.10 T. What minimum current in the (t;o1+uo u evorod is needed in order for the magnetic force to cancel the weight of the rod?

  A stationary proton is in a uniforfx*e1 ; rd:wnwm magnetic field of 0.20 T. What is the magnitudfr1ed :nw;xw* e 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 chis)0; ra0 zdof $5.0 \times 10^4 \; m/s$ 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 spee mc7ch:6n6lo wo5ab(zd 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 norxa;7c0 yt) kr3euwo5gs*7o xzi erd:,th 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 sqqb/(yq qx,krvrwkj(4; p ,v 0peed 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 sk:z ,o 5a+l5sh7l fyhwpeed 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 of (qrvfk r*kp4/ $3.0 \times 10^6 \; m/s$ 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 w; h*mx,qi/qq538/ld znu z ekiire carries a current of 25 A. What is the magnitude of the magnetic field at a *x,l/;8 5 zn mhiqq3kezi/du qdistance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magned1-ne *aiw *.0yjaxco tic field at the ground, 10 m awxe*- w a*o0nyj.i1c aday?

  How much current must florc:41 xjbs a*8)ivzabw 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 whl;qx wq m;42fire carrying 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 xqf4;qml;wh2 about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents of 10 A in oppos(u yvwue 6g4b*ite directions. They are separated by 40 cm. Wheyw6 buguv4 (*at 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 other?

  Two long parallel wires carry currents of 20 A and -csc,ht42tuz5.0 A in opposite directions. The wt2 c s4z,htu-cires are 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 directions.aej vb8 6 3z;fcv7ayp9 The wires are separated by 0.20 m. At what point between the two wires are the contributions from the two wire pbac39ve 768yjvazf ;s the same?

  Four long parallel wires each carry 2.0 A in the same direction. They ar) 7:5yg hnn74b vv+u lmvyl4cte 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 th 4c)nlt5mg+vvh y7u 4lb7n:yv e wires experience due to the other wires?

  Two long parallel wires carry currents of 5.0 A and 8.0 A in the oppoulp tpj*7s*:rsite direction. The wires are separated by 0.30 m. Find the magnetic force per unit length between the two wir7rjsp*t:u pl *es.

  What is the magnetic field at the center of a circular loop of wire of j0b(i ar a he*tn4pou4ki1c61 radius 4.0 cm when a current na60ij4b*ro 1eck i4th ap1(u of 2.0 A flows in the wire?

  A solenoid 20 cm long i9 a9a9 qnm9li g7a5ziks wound with 5000 turns of wire. What magnetic field is produced at the center of the solenoid when a c9 qz 5ling9akaia9m 79urrent of 10 A flows?

  A solenoid with 500 turns is 0.10 m long b -po,f47 v rsz8cvi3hb13 hinand carries a current of 4.0 A. What strength of magnetic field will it have at i iv8nbhp rb,7fsh343z 1-covits center?

  How much current musrs.z 4hfnz7:c t pass through a 400 turn coil 4.0 cm long to generate a 1.0-T magnetic firzh .fszc4: 7neld at the center?

  How many turns should a 10-cm long solenoid have if it is to 5o ma,o nf5r5jgenerate 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 12eaz g9sw,,quvb6e7.k; , e nas0 turns that carries 6.0 A if its dimensions are a97 abq6eg,; ,.ses kz weu,vn4.0 cm x 8.0 cm?

  A circular loop of wire o g3v08hmn v7,q1ob p;bt 4cm 0hz7g7cv,grz wsf radius 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 plane31,r m sbgpnv4 zcmgc07zq,o v7vbg;0h7h8t w of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sectional arej:k gb8 6 *gf*eatz7qua $0.12 \; m^{2}$ 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 /br+0) zqjdn9xqjfcd9ep. 7d field of 3.5 T. The loop has an ardc0er7fz9dq/+xdn pjbj)q .9ea 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 wiru wemwy-15n9a3 i6xbee of radius 0.50 m is in a uniform magnetic field of 0.30 T. The3wnbx 6ei95au m- w1ey current in the loop is 2.0 A. What is the magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic fi5ed : mamy +s1jk;hw-reld 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 arkwd-+es 5h : jmm1;yfield?

  A circular wire loop of area bv:0k*n, i+r5c/bi g zhm;jfp$0.25 \; m^{2}$ 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 e) has a e,ebr k8i+xu /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 vbr l/*sq02zwlj6m9fd elocity $6.9 \times 10^6 \; m/s$ 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 th,qev3bp b9e j2)un8v76pq5gd jbu tn /en moves into a magnetic field of 0.040 T. What is the radius upvn/j9d5 gne8etu qb63b,27) bj vqp of the proton's resulting orbit?

  A proton is accelerated from rest through 500 V. It enters a magnetic fi z rz(rj;m, )t9vqsm)vl6u*qkeld of 0.30 T oriented perpendicul s6r), (*qrmzlk)jmz9u ;vtvqar to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accele-mczbaj0 8i9tmb/ x18q 6vsecos1o (x rated through a potential difference of 10 kV before entering a velocity selector. If the B-field of the qs0mc891ot 1mi/-xxbzavc8 e osb j 6(velocity selector has a value of 0.010 T, what value of the E-field is required if the particles are to be undeflected?