If the north poles of two bar magnets are brought close to eaemt+za -a,f.m1,) f z6rm9qh fpo k8jxch other, the magnets wezfa m.o9pm)8qtj, h6fm + far1-x,k zill

  If the south pole of one bar magnet is brought near1wm +wm ,v3b4knh59z i4j lphmvln9:g the north pole of a second bar magnetn43 b vn51h,i+wjpmgzkmm:h lw 9vl49 , the two magnets will

  If a bar magnet is divideuj 2w8zu :eof-);z ,nt-mmbqwv::dq5ny.f aed into two equal pieces,

  The Earth's geographic North Pole is m ,quccg-kyrzj5sl gs0. bd:)5 5 +mjjdagnetically a

  The south pole of a uu 5+q5kjvf 9emagnet points toward the Earth's

  An electric current producesn 7zp4hj5k . xtdvk/fe2l7qw3

  Which of the following is corogt( pw-,kestn6uj 3) rect?

  A vertical wire carries a curre e1 -,wrf1ohscsr4t3 rnt straight down. To the east of this wire, the magnetic fielf 4,r3 che1o sw-srrt1d points

  A horizontal wire carries a current straight toward you. From your poii ih,4fd )yeum rc-;h-nt of view, rmih )efi-;- cy4h,ud the magnetic field caused by this current

  A current carrying loop of wire lies flat on a table top. When viewed fy ;81 gc i-xben;t4fgyrom above, the current moves around the loop in a counterclockwise sense. What is the directiog4n bixt;yefgy-81 ;c n of the magnetic field caused by this current, outside the loop? The magnetic field

  A current carrying circular loop of wire lies flat sh 6c59 .qdwirjz(n :kon a table top. When viewed from above, the current moves arosndj:95 whqi c (rz.k6und 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 magneticu;fa37b4qistqe il.) l 31d g) mfki9bl.zbx3 field is the

  1 T is equivalent to 8yddqqjv:fj b0f8e3ws.n * :s+tk5ei

  The direction of the force on a cukg7 coay3lz+:rrent-carrying wire in a magnetic field is described by which of the foy:lc7 +kz 3agollowing?

  The force on a current-carrying wire in a magnetic field is the strongest when d e(aw9s-1xnd

  The force on a current-carrying wire in a magnetic field is equal to zero wi ukvgipue:n3h5(ix5: ll ; eubpi,9/hen

  A vertical wire carries a current straight up in a region where the magbix s2q3 ,tf-knetic field vector points due north. What is fb-sx2qtk3 ,ithe direction of the resulting force on this current?

  A charged particle moves and expky b/ zt-bn1e4eriences no magnetic force. From this we can concludezk4/e t1nb yb- that

  A charged particle moves with a constant speed through a region where x 77seh btyr7,a uniform mag7ehbs ,rx77ytnetic field is 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 constant magnetic field. The magnetic forca 9t2wh 9t, .n5ujs/ie-rsmbxe on ttxe,t -i.s5u9hm/na2b9 sw rjhis particle

  A charged particle is injected into a uniform magnetic field such tpe i(-yg-j5n- bd(ar5hs(vpmhat its velocity vector is perpendicular to the magnetic field vector. Ignoring the particle's weight, the particle5-bp r(np( e(5sv-g -dmyhj ai will

  A charged particle is observed traveling in a circular path in a unifh+6z xlq)cl )j7 co rm;dllak 13(,dmborm magnetic field. If the particle had been traveling twice3l ,lj+aol(;7c db1)l mrk)6xhzqmc d as fast, the radius of the circular path would be

  A particle carrying a charge of +e travels in hu*6c zgznxf47 o *t*jhj fs5jcw9/ v(a circular path in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius 9 */(o*jgufjnt7 6h5c4xw hzfjcz s*v of the circular path would have been

  At a particular instant, an electron moves eastward at speed V qv f:swiqw8;x3 a k4(qin a uniform magnetic field that is directed8kaq: (4sqq ww;f3xv i straight downward. The magnetic force that acts on it is

  An electron has an initial velocity to the south but is r4 *cllwbgbv97+0jg r 5smj7 myvb8(a observed to curve upward as the result of a magnetic field. The direction ofr8m bgbjs7 v9l*l0mg7c(+ yw4a rb5jv the magnetic field is

  An electron moving along the +x axis enters a region where there is a uniform 43ynqvx uaz5qh2 z 8o;magnetic field in the +y direction. What is the directionz q4a8 z3ovhq 5x;uy2n 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-carrying wire isc(f3/ zdh ay.x

  At double the distance from a long current-carrying wire, the strzq*e 4oo6 bfnl-l9l4zength of the magnetic field produced by that wire decrea4 o*qz 9l6fzel4- onblses to

  Two long parallel wires placed side-by-*2 gyr:51,-z mie c)yvw beplcside on a horizontal table carry identical size curmg,1zeby e-2rc5:v )c w*yliprents 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 point exactly midway between the two wires

  Two long parallel wires placed side-by-side on a horizontal table carrf.c .pzn5: 9pn4m2/pqt jiz:tgw 0z uoy identical current straight toward you. From your point of viejmpz :qnoti.04:z5 .c p9ptgfz2unw /w, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal currents. The mag+ w*hqfsc2optg.v, y 3nitude of the force between the wires is F. The current in each wire is now doubled. What is the mahsg v2q, pytw*c.+ of3gnitude of the new force between the two wires?

  A long straight wire carries c9kjaavk(0ys oze.f - 1urrent toward the east. A proton moves toward the east alongside and just south of the wire. What is the direction of the force on t a0zef(k1a.j yk s-vo9he proton?

  A wire lying in the plane of the page carrin/ 22obwvx39phd3f hres a current toward the bottom of theh3voxf w rp23hbn 9/d2 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 right?

  Two long parallel wires are placed side-by-sided7 3ubkpk3cr.5ny h :v on a horizontal table. If the wires carry currnk7h5cp: u.dr3 ykvb 3ent in the same direction,

  Two long parallel wires are placed side-by-side on a horizontal table. If the +e9)- 0kwy-up chvf:2xroklp wires carry current in opposite du-xpk 2w9+0yhfp-:o) e vlk rcirections,

  Consider two current-carrying circular loops. Both are made from onek, rxz/pwqz+3 strand of wire and both carry the same current, but one has twice the radius of the other. Compared to the magnetic fiq/k3+ xr zpz,weld at the center of the smaller loop, the magnetic field at the center of the larger loop is

  Consider two current-carrying circular.cz9;o k7wdtn loops. Both are made from one strand of wire and both carry the sazd;.o9wnt 7kc me 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 wgp yc0t2: nya-hen the angle between the loop's magnetic moment and the magn - ya0yn:p2tcgetic field vector is

  When placed askew in a magnetic field, a 23 t xl0tpijw(current carrying loop that is free to rotate in any di30 it jtw(lp2xrection will experience a torque until its magnetic moment vector

  What fundamental fact-a76 ,8w95vzqkk kodwym d.lt underlies the operation of essentially all electric motors?,k5z9 y6 kovkqdl78 a wwdmt-.

  A circular wire loop lies in a horizontal planeha4y( pq -ymy. 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 and dips below the horizontal. Which side of thepa(.h ym q4-yy 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 accelerated through2, z fl4gt2e(dsurj xnzz,:0b 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 rs4f2 d :u,tezb zlg,n zx(j02mass of the particle in terms of B, q, V, and R.

  A velocity selector consists of a charged particb-2xxe sa5)tjc 2m*eo1z f.rile passing through crossed electric and magnetic fields. The forces exerted by these fields are in opposite directions, and only particles of a certain i2 cejma1fo)t5ser*. 2xxb -zvelocity 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 curre)d unp0cg k5j9nt of 0.60 A is oriented parallel to a uniform magnetic fiel k9cj5gud)pn0d of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10:vxq3wc:p3sha 3 +qm7t9zrav 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 kf6f/ 2yd x0h rr-4dsn csn489wb.chocarrying 5.0 A when it is placed in a magnetic field of 0.020 T? The wire makes an angle of 446hc2 ynsw -hd.k90dxnfcr /bs fro8$27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long has a mass of 01 cprlrvm6z3o h/,8wc.050 kg and is in a magnetic field of 0.10 T. What minimum current in the rod is needed in order for the magnetic force to cancel r cpmlv r ,831z6h/owcthe weight of the rod?

  A stationary proton is in a uniform magnetic field of 0.20 T. What is the magfnj2q )m7,0kxaqhi(b nitude of the magnetic force on the proton?a,j hmx2)f7n0iq qk (b

  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 yj u any39* b4:9beut+t)p/uc q/sb qua 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 zvb1 (qpsrhd ()sa4p6speed 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 wit:xiw9dj i 34cbh 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 ui* jol/+m)dn 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 wi 0p y-ukn7u -x a)fj0cn)oshy:th 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 acceleration of the electron.

  A proton has a speed o z+1r ke1 ze7s9jd1y qt:8dpsuf $3.0 \times 10^6 \; m/s$ 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 25 A. What is the magnituy) tjtx( h/w 15jyhve;l4kk+ed96rx wde of the magnetic field at a distance of j ;ket69h1/45 tr)(ex xwwkylvh yj+d 0.15 m from the wire?

  A high power line carrying 1000 A generates what ma/ed41 kxk4k,vuyh m3wgnetic field at the ground, 10 m awwmde k/k v1,4x3uhy4 kay?

  How much current musn3z hk3au)h:o ;ixwt: 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 wiro )ra;bm9g gj8e carrying a current of 5.0 A is the magnitude of the magnetic field due to the wire equma9g) j;8rbgo al to the strength of the Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry c6jj .zyg xdi(voor k1a33 ,lx1urrents of 10 A in opposite directions. They are separated by 40 cm. What is the magnetic field in the plane of t3vri(zxl d 3jo6.k1y xo 1ja,ghe 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 5.4d0/ h-v ijojrcf5n n0.tmu9x0 A in opposite directions. The wires are separated by 0.20 m. What is the magnetic field midway betweejxc09/. h0ri-n5 v n4uftmodjn the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite directions.2ml d(tbw8x):5 brths The wires are separated by 0.20 m. At what poin2h):s wdx(mtb58t blr t 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 direction. They are parxh u+z-g z5yl3allel to the z-axis, and they pass through the corners of a square of sily3 hz5u+z x-gde 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 8i)/x s.hk,hmqdazr2c6/i ey 4.0 A in the opposite directiom/k/h,)s46iq 2 diyxzh. ecran. The wires are 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 ra4(eqf cm-kr2a,h(jgdx jt0p 4dius 4.0 cm when a curren(frtjc p4x4(g2he,km j a qd-0t of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 tsw txgkq7)*+k urns of wire. What magnetic field is produced at the center of the7)+s gwk kqx*t solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carrieik;,8bh8 xub5te a .kxs a current of 4.0 A. What strei. b ,te8hbk8uak;x5xngth of magnetic field will it have at its center?

  How much current must pass through a 400 turn coil 4.0 cm long t9 2g3wy)od15qlz w zvwo generate a 1.0-T magnetic w)zdl v5g1w 3 w9y2oqzfield at the center?

  How many turns should a 10-cm long solenoid have if it is to gbl.e1,icakfx ee)c. 2ar/ t8l enerate a $1.5 \times 10^{-3} \; T$ magnetic field on 1.0 A of current?

  What is the magnetic moment of a rectangularof0 ctah8e 7r5 s1j pl7;q1oay loop of 120 turns that carries 6.0 A if its dimensions are 4.0 cm x 8.0 cm5 8s1fe 17tqop yaa0hjorl;7c?

  A circular loop of wire of radius 0qhg6 ,lyaoqfo;eo 35 7.50 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 plane of the loop is perqa, ;7qo6ylh eofg5 3opendicular to the magnetic field?

  A circular loop of wire of cross-sectioyka/3az7x86fvlkleuu q qomd. 05d( )nal 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. wgm0,ie e*zm85 T. The loop has an areaeimm0 * ewgz8, 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 c73lao9 (qay uis in a uniform magnetic field of 0.30 T. The current in the loou a79q(y3 olcap 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 fte6/.o+f prkhield 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 magnetic6ftpro./e k h+ field?

  A circular wire loop a2qq, jfn*b8 zf(xm4dy1h)ymof 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 single-charged particle wxhu;340oc hn(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 velocitycjg-y8c0c 13 oz( f+j ej/o+dyn7ppoc $6.9 \times 10^6 \; m/s$ 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 d. f8e69v o1gb n7e lonlo-y+ua potential of 1.0 kV and then moves into a magnetic field of 0.040 T. What is the n1.+8oluv y-67oeg d9e bl fnoradius of the proton's resulting orbit?

  A proton is accelerated from rest th5aih8uutc 2)k 5+yppd rough 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Determine the radius of the phpcp d 8ua)tk2iyu 55+ath it follows.

  A beam of electrons is accelerated through a potenm -afj2 9buq(m/5whtwtial difference of 10 kV before 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 req9(2wfm /h -ujbawqm5tuired if the particles are to be undeflected?