If the north poles of two bar magnets are brought close to ea msht5 5ccd2ybpt138ech other, the magnets wmpc 18eh23ts5bdyct 5ill

  If the south pole of one bar magnet is brought n d 3otgna.6waeo3z8. hear the north pole of a second bar maa8zao d.3. gwn6eo th3gnet, the two magnets will

  If a bar magnet is divided into two equal pi+gnxivi3c1yi ww +++eeces,

  The Earth's geographic North Pole is magneticall)bf ggd-25svwy a

  The south pole of a magnet points towar( h6maqjfrr3 p7xp.i1az5v5de2t:t gd the Earth's

  An electric current prodh *7rzrso0 jq s-d-n.euces

  Which of the followingouhw1si f*q6gvxul+pz q(hf ) 86v4b1 is correct?

  A vertical wire carrie1xckaete98wwf m cfmc62e32 : s a current straight down. To the east of this wire, the magnetic fefce2f:m xk9w6ccw823 1tma e ield points

  A horizontal wire carries a current straight tok - f;7lnu ra6)guj*ibward you. From your point of view, the magnetic field gj6)rifula *u b7;nk-caused by this current

  A current carrying loop of wire lies fl1 70aydc,f fxqat on a table top. When viewed from above, the current moves around the loop icd,y01 xf qaf7n 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 tab3s50lt .chlr/ qq8qwsle 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, inside the loop? The maqc s. lr 8wq/5qts3h0lgnetic field

  The SI unit of magnetic field is th-kxm1tz bdj5,i;ia71b r4ea je

  1 T is equivalent to9zs-u,mk2i*ers2i ,fp(ncz hd4 fyr-

  The direction of the foyek5z n597hzrrce on a current-carrying wire in a magnetic field is des hnyz9r55z 7kecribed by which of the following?

  The force on a current-carrying wire in a magnetl lp2cfx9ffm167kr( iic field is the strongest when

  The force on a current-carrying wire in a magnetic field is equal to zz* (prj f,7djnero when

  A vertical wire carries a current straight up in a region where the magnetic fieo*5z9- vtwm 0lzk7m jsld vector points due north. What is the direction of the resulting force ont 7zz59kj wmv0-s m*lo this current?

  A charged particle moves and experiences no magnetic force. r ( e):ofrb3tiboa;e/ From this we can coitrba;b/r oeoef (3 :)nclude that

  A charged particle moves with ahy/61ut+:kn.c; 5hqe kre wvr constant speed through a region where a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force actine enwq;r/:. ukk yhr6h+v1 tc5g on this particle will be maximum when the particle moves

  A charged particle moves across a constant magnetic field. oap 6vpu82lt6sm)g 5nThe magnetic force on this particl 6)tl6mn o82v5gpapuse

  A charged particle is injected into a uniform magnetic field such tham8 t1wef. x7cyu,qh 8et its velocity vector is.ymqw87exe1 8ucf th, perpendicular to the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in a circular path-;eovb / r 1m.ge o.u.wrg:cszd)ch8v;(wvoa in a uniform magnetic field. If the particle had been traveling twice as fast, the radius of the circghmuc)8 vew;boda. er(c.gv. s-1v o;zow r/:ular path would be

  A particle carrying a chargen ha( *3ei5-2wxf2ebq xiyk )i of +e travels in a circular path in a uniform magnetic field. If instead the particle carried a charge of +nxe3 *wk-iyiq ab2 2(i e)hx5f2e, the radius of the circular path would have been

  At a particular instant, an electron moves eastward at speed V in a unif5mx le b ; qln;56+gjpjq*zm r68neee-orm magnetic field that is directed straight downward. The magneti6; e6p5ql+j jenzerlb m*;me q8 nx-g5c force that acts on it is

  An electron has an initial velocity to the south but is observed vez 0;l/s5, +rbjkz+necqm52b tfoqsi:xe-/ to curve upward as the result of a magneto+ ez; eblsbn2:/ v,5+i xct-50zf/qm qk jrseic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a region wheu tggkk oqlac01-, q)r8t:0ft re there is a uniform magnetic field itt 0r:ukqogtkc1 8)a l,q0fg -n the +y direction. 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 produc6:+esyy107 t mvqvmened by a long straight current-carrying wire is

  At double the distance from a long currentnqrw y6 cpo5;gxvog 7 l6 fc3f51d,-cn-carrying wire, the strength of the magnetic fiel1c6f5q,pc 3- yrn d;ocf ovg675xglwnd produced by that wire decreases to

  Two long parallel wires placed side-by-side-so7l*i 0a0(7fh:.bol,t wrfvcx n k l on a horizontal table carry identical size currents in opposite directions. The wire on your right carries current toward you7.x lio ws* o 7b -lvcf0f0thnrlak,(:, 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 tt(a4uas 2t3 stn/ sl+a horizontal table carry identical current straight toward you. From your pointn(attu/ss2 tl+t3 s4a of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnitude of thvrahz8i6cw u;xy1 (v6 e force between the wires8 wz;6rva6u(v1 chxiy 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 carriesx/( l5vj,o x1h7wbo8lq,he nl current toward the east. A proton moves toward the east alongside and just south of the wire. Wh8/5nvw ol xhj71 (e,lh ,lqoxbat is the direction of the force on the proton?

  A wire lying in the plane of the page carries a current toward the bottom h6l4qg/uimy7 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 4q 6mlh/yi g7uplane of the page, from your right?

  Two long parallel wires are placed side-by-side on a horizontal table. If the ohyajx:jgg- 7j:(,i h wih-jaj 7,oyi (: gxg:jhres carry current in the same direction,

  Two long parallel wir x-89ldn w;iz pho8q(pes are placed side-by-side on a horizontal table. If the wirei98(wx8h-nq lpdp ; zos carry current in opposite directions,

  Consider two current-carrying circular loops. Bo8m rb)8 mv9iabth 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 a9r)8v8a bmim bt the center of the smaller loop, the magnetic field at the center of the larger loop is

  Consider two current-carrying circular loops.6/z ord2 pqrtu* c7a6ndd2 bq m;/:imy 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 moment of the sma6 iaru *:z2 7/ bdpq;y dnmotdq62/mrcller loop, the magnetic moment of the larger loop is

  The maximum torque on a current carrying loop occurs when the anzs y* ; xin8ej *xjmamo9nl;t961fv-vgle between the loop's magnettsjmmx;eixal9 n* ov-z8n19 v * fy6j;ic moment and the magnetic field vector is

  When placed askew in a magnetic field, a current carrying loop thf2yo7td8pql*q rb ga3y m(p7(at is free to rotate in any direction will ex(f3q2pr(lt bp*7q 8 go7ay mydperience a torque until its magnetic moment vector

  What fundamental fact underlies the operation of essentia5 p(35eoa)n8j3+bs q ue lmcndlly all electric motors?3s53 )onn a8(m5j edep+u lcbq

  A circular wire loop lies in a horizontal plane on atvfd* li -vvo*d:m:/rc 0ntf 2 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 dips below the horizontal. Which side of the coil tends to lift off of the table because of ir*o*vf0dc :-t:vfdt ml /v 2nthe torque caused by the currents interaction with the magnetic field?

  In a mass spectrometer a particle of masm) *qzh d(znao5*a w.okh4tr,s m and charge q is accelerated through a potential difference V and allowed to enter a magnetic azqhhz,t**.a4 5ookr n m(w) dfield 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 cr2q-c e+loodq1u 41qaj4mab9p ossed electric and mag2qj4 +ped1umo4o -b 91qaalqcnetic 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 electric field point?

  A 2.0-m wire carrying a current of 0.60 A is oriented parallel 1n cuh5 b;corho0i65ah r+ai+to a uniform magnetic field +5 rhb+5aoio6;0hhrnuc1aci of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a currex d331 ohbwfg(byx2 7hnt 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 on a strxtwvxrw1 wml):- 02w caight wire carrying 5.0 A when it is placed in a magnetic field of 0.020 T? The wirmt2w xv lc-w1: 0rx)wwe 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 lqqmx1s1;hu9 ae/w o*magnetic field of 0.10 T. What minimum current in the rod is needed in s 1qew/xh*o1l a9u;mqorder for the magnetic force to cancel the weight of the rod?

  A stationary proton is in a uniformlu n2(5pesxa9 magnetic field of 0.20 T. What is the magnitude of the magnetic force on the protu ep2l(5x9anson?

  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 spee6+gzbb-yw /b rd 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 of05y6k w1chmnivkk w:5 $5.0 \times 10^7 \; m/s$ 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 travelin f *1iq::xqnsyg due 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 sperlmpisf /,w4h:a zi ,68v5xvi ubvr4 3ed 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 spepkqb b-ryp42bbmz6* zdx+,2v g )4qqn ed 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 icl .tc1 ;9:jy hs inx3e3s,kxof $3.0 \times 10^6 \; m/s$ 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 ca8hq -y *u;8m5 fqno.dusmw t9brries a current of 25 A. What is the magnitude of the magnetic. wmu*hb 8 -smutnoq89fdy5;q field at a distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magnetic fieldd -40t, ia-w pt:xxfxq at the ground, 10 m d ft-4pxi-q w 0xt:x,aaway?

  How much current mus74c* qt6rjnget11;kp2r8v8gix lv om t flow 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 wir tzji*0kp aqkdfau,j 6 ()0g5ne carrying a current of 5.0 A is the magnitude ti0jkaj n 6dag*k05fpu)z( ,qof 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 wires carry currents of 10 A in opposite direction1*d4xec m h5/u.ihh xys. They are separated by 40 cm. What is the magneticeyhm chxxu5*d4h .i/1 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 5.0 A in bgpancn0l1)ux7 pqb p3.* hqv3peb(3opposite directions. The wires are separated by 0.20 m. What is the magnetic field midway between the two wire (b1nv3gpaq * 3xpe7 bh).pu0 bplc3qns?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite directsd coy .jsdli;t(g22h5h1 bb2ions. The wires are se b2g y2hbdss12.i ; 5lhc(odtjparated by 0.20 m. At what point between the two wires are the contributions from the two wires the same?

  Four long parallel wires elk8v-y z 1xntp:tnr89 ach 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 side 4.0 cm positioned in the x-y plane. What magnetic field does one of the wires experience due to the other wire tnx8lpvzk8 :19r-tnys?

  Two long parallel wires carry curr3vmvc lq3k, t1t:6qs d pumc;7ents of 5.0 A and 8.0 A in the opposite direction. The wires are separated by 0.30 m. Find the magnetic force per unit length between l,sqt7mvqcvm:u1 ;dc t 3kp63the two wires.

  What is the magnetic field at the center of a circular loop of wire of radius 4w2ho,, culk :c.0 cm,cu k:lw2coh, when a current of 2.0 A flows in the wire?

  A solenoid 20 cm long is wounnwjp8y:2 9 vm 3c;qcm i8uou7m/f fl)ld with 5000 turns of wire. What magnetic field is produced atfqc3o piu8: mjmnm lyl/vuc782f);w9 the center of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carries a curre1rx angp*r /zsk6i0 v89s,cwant of 4.0 A. What strength of magnetic field will it have at iv9pwk/az rns 60 1xcgi8a*rs,ts center?

  How much current must pass through a 400 turn c pd/q eb/tiv vi:zh:0,oil 4.0 cm long to generate a 1.0-T magnetic field at the cen:d iqv/zept h:i/ 0b,vter?

  How many turns should a 10-cm long solenoid have if it is tobmmym +er2 4z; 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 6.0 a w((8o7uelsimfr(+rbf0mw)dp 4v c (A if its dimensi)c fi(uadsrmb8 fw4erplow(m0( v7 + (ons are 4.0 cm x 8.0 cm?

  A circular loop of wh9 *txp gzc4w /wq1x1tire of 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 t c4w* 91 z1q/xwptghxtorque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wno:upwf pw,:d1z 6 ;a e+ kjxn)s1dwx4ire of 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 zg/jr fv6e m.3ut+u9 sA is in a magnetic field of 3.5 T. The loop has avt9 m g3+.ejs uurzf6/n 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..rt7kx)ajc7ilzso/ , 50 m is in a uniform magnetic field of 0.30 T. The current in the lo,)tx c7jz.r /7a oslkiop 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 raowuk55v9 3;2jaqiy br dius 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 5w9bj vi2uao 5qr y3k;plane of the loop is parallel to the magnetic field?

  A circular wire loopvl (t* p0x+gag 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 single4 yr2yxbc/; bqs l0a7x-charged 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 velo5z6t ;ydzvy w(city $6.9 \times 10^6 \; m/s$ 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 nclp*+-b/)vo2w m tcvws3x1m bk p;;qa potential of 1.0 kV and then moves into a magnetic field of 0.040 T. What is the radius of the proton+k-2tpm * v bbo;nwl);wp1c /qmx3scv 's resulting orbit?

  A proton is accelerated from rest through 500 V. tprf,dar:+c/ lh (jr1It enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Determ,/hat+rrl ( 1f:jpd rcine the radius of the path it follows.

  A beam of electrons is accelerated through a potential9;z2fsa.wr, nskc0jyyq,* hs difference of 10 kV before entering a velocity selector. If the B-field of the velocity selector has.h9c* 2;kjynsw0 ys,rq fsa ,z a value of 0.010 T, what value of the E-field is required if the particles are to be undeflected?