If the north poles of two bar max vgxpwwu-m52pf4+ 7t,agt e*gnets are brought close to each other, the magnets will etwtfxa 754g2,x-+vwmpgu p *

  If the south pole of.4*u cv :q )ebpi5rb2ssg.dd h one bar magnet is brought near the north pole of a second ba s5gcpq.rh 2d e4bi:s.db)u*vr magnet, the two magnets will

  If a bar magnet is divgt 5z14f/( eda/sjrr d cftg41ided into two equal pieces,

  The Earth's geographa g-+ /e,awyo9+x4;xi;dv lv wcy)xkaic North Pole is magnetically a

  The south pole of a mag:yb 2m/yn.mswd*( whi net points toward the Earth's

  An electric current prodm qsr1;c)alzg q /u n,mh+pv0)uces

  Which of the following is cor9fu 8 xz6ysin2rect?

  A vertical wire carries a current straight down. c2qhm,n wo65k To the east of this wire, the mag6wn5qoc2 ,mh knetic field points

  A horizontal wire carries a current straight toward you. From your pqqxcu2/6nn.g 00 pze lviw,p)sjtg+3 oint of view, the magne l3tcp 2 0x.zw)qu+s0pvgnn qge/,6ijtic field caused by this current

  A current carrying loop of wire lies flat on a table top. Wh ix; :-ik.i d+65wuyhlc)suzxen viewed from above, the current moves around the loop in 6i )z- ;d5k l :iwuhcxuyx.si+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 itq8y: ) td53j43h2 azagvhcya table 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 magnetic field3zdcjy) i4qh8ygvt 5ha3t a2:

  The SI unit of magnetiw0fwqs2 mgi ,-c field is the

  1 T is equivalent toofn;mo*ed d 6su97ut,onhfea:w-7bq4m0 0mg

  The direction of the forvp ez+2( ri:jgce on a current-carrying wire in a magnetic field is desg2j:eivr (zp+ cribed by which of the following?

  The force on a current-carrying wire in a magnetic field is the strongest w dbqy qx,:a:/lhen

  The force on a current-carrying wire in a magnetic field is equal to zero lk pg1ujo- .nkx1pp3;when

  A vertical wire carries a current straight up izqdaqd xqu 5283cww96n a region where the magnetic field vector points duwq8axcw3d5q qz6d2u 9e north. What is the direction of the resulting force on this current?

  A charged particle moves and experiences nxyjr5zl m6r8 t 2guq94o magnetic force. From this we can conc yr4z8utj29q xlg5mr 6lude that

  A charged particle m 9u9f/ksrh3 aqoves with a constant speed through a region where a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting on thi99 rska3/uqhfs particle will be maximum when the particle moves

  A charged particle moves across a constant magneticxsceyh q *h+q((vee )5 field. The magnetic force on thisq ee)v+ ((h*5cxhy sqe particle

  A charged particle is injected into a uniform magbv m/n5c7)uqinetic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring the particle's weight, the particle wilqcn) 5buv7mi/ l

  A charged particle is observed traveling in a circular path in a msj.g .5:zmsecw +xw-hgkc(4 uniform magnetic field. If the particle had been traveling twice as fast, the radius of the circularg wj .(w54xscmsm-ghcz .e +k: path would be

  A particle carrying a charge ox; 5oeni0w y7g r)8xcyf +e travels in a circular path in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of the circular path would 57rx0y)wcx8oyn;g e ihave been

  At a particular instant, an electron moves eastward at speed V in9obi58 em mo9z a uniform magnetic field that is directed straight downward. Thbi8 e mz95omo9e magnetic force that acts on it is

  An electron has an initial velocity to the south but is observed to/*0-v 1k3o1yr )t4lsabnss ag m rjq)e curve upward as the result of a magnetic k*t4 rn1a-e/bvsm) q01srg 3 jly)aosfield. The direction of the magnetic field is

  An electron moving along the +x axis enters a5p1) h( vf*m;8ebdeyc9 izmfg region where there is a uniform magnetic field in the +y direction. What is the direction of tm5viee*8gh)(ycm ; 9p1bd f zfhe magnetic force on the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced by a lon :d:s pp ze*f+hy;vp(wg straight current-carrying wire is

  At double the distance fro,ava s)n.w cg+m a long current-carrying wire, the strength of the magnetic field pw g+.c,v as)anroduced by that wire decreases to

  Two long parallel wires placed side-by-side on a horizontal table carry identigt 2tl0q )a3q 8x z2s4)yodgmical 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. Fry 3oq8tq)tm0 di ggsl224)xazom your point of view, the magnetic field at the point exactly midway between the two wires

  Two long parallel wiryko-(zn+i sb )es placed side-by-side on a horizontal table carry identical current straight toward you. From your poio+ n z-bs)k(yint of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnitude of the force lqc4 ,u..;r n h0fxlyjpn2b8azn . ze8between the wires is F. The current in each wire is now doubled. e jly l0qz.pu4..x8nzrcn b 2n;h8 af,What is the magnitude of the new force between the two wires?

  A long straight wire carries current toward the east. A proton moves toebcmspw332 e 8s- dtr )z3vlx(ug (+aiward the east alongside and just south of the wire. What is the direction of the fa eegs83cv)t u3p2z xd-sw3b(+(li rmorce on the proton?

  A wire lying in the plane of the page carries a current toward t b9p*p+,vclq uhe 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,plpu*,vb+c 9q from your right?

  Two long parallel wires are placed side-by-side on a horizontal table. If the woa t*ar6,7 8, pgtycpcf3k 3yvires carry current in the same ditaoatv *8,76fy3c3p, crkyg p rection,

  Two long parallel wires are placed side-by-side on a horizontal table. Ifz56qqwaq d dl)lxn2u dy; d0:/ the wires carry cuuxd lynd5ql6:q /0wzd da);q2rrent in opposite directions,

  Consider two current-carr.hyuo ea;r 9p6 shy/a scmu)0c6g/r g-ying circular 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 field at the center of th-cg.;g6)r r h0aym/hpsa6yce uou9 s /e larger loop is

  Consider two current-carrying circular loops. Both are mav ,btfdnz:) a ,:qnha;frx-k2 de from one strand of wire and both carry the same current, buth tz2q ,ankrdbx;n,)-ffv:a: 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 on7bti0 lk/c8 p 9cqfbow 45f:ou a current carrying loop occurs when the angle between the loop's magnetic moment and the magnetic field lfb i0f4wob 8/ucoc7 t:k9p5q vector is

  When placed askew in a magnetic field, a current carrybul6 -f* k *qwx(.otfn zjj69qing loop that is free to rotate in any direction will exputqfbzfkn*o- . wjl6*96x qj (erience a torque until its magnetic moment vector

  What fundamental fact underliqd(gak+nrdx5 d -. ae,es the operation of essentially all electric motors5, xk nd.-+rde( qadga?

  A circular wire loop lies in a horizontal plane on a table and carries cut/(if d4v b)wp,x qus2rrent in a counterclockwise direction when viewed from above. At this point pfxvt(d 4 us2)/wqbi,, 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 par b 8w8.fw5jnnbticle 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 expressi8n8wb. nj5wfb on for the mass of the particle in terms of B, q, V, and R.

  A velocity selector consists of a charga:9.-yeopz pbu1t yi4nv 1sh +wil)c.ed particle passing 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.iyi epw -1p4:a9bso .hn.v l1ucy)+zt 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 toxycxmm37 k 4dtj +,1ku a uniform magnetic fiemdct,3xk y4xm+u k7 1jld of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a direction o .v.rf/ sowjd/.a3aak;szx5 qf $30^{\circ}$ 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 sxg l0 8bt ,2bcr0d5erutraight wire carrying 5.0 A when it is placed in a magnetic field of gr8 r,0u0dte5b2lxb c0.020 T? The wire makes an angle of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long has a mass of 0.050b)(kg pyx+,vi k0x0hv 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 the weight of the ro,gx +yb)k00hv (xipkv d?

  A stationary proton is in a uniform magnetic field of 0.20 T. What is the magruexg:(-x*iitdfgiy;5an** am 7 et / nitude of the magxf;idge7 ra *i:ityx/ uneg(a-5 *m*tnetic 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 speelu 9mm. u,yj1+dw2a( m nw5iysd 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 spev7x7.vd2n gm7tk)7+frygp saed 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 nor/za ( .lv-tkp2tudlu9th 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 speeahkw o4qy,,-i d 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 sfbuf+6 tv gh6xfj- (.cpeed 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 speeda ;0k,mduq kvkcj/o ;*lb1 a;f 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 carries3vcwl 94 ya7ga a current of 25 A. What is the magnitude of the magnetic gclw y4va3a79 field at a distance of 0.15 m from the wire?

  A high power line carrying 100 +g,i1bc1z7kekoja2zw 5 f:rh0 A generates what magnetic field at the ground, 10 m awayofgk7ck az bwr1: 5,zi21+ejh?

  How much current must hj :x b9d*/s3lqjsz -wflow 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 straliiak17 php, /ight wire carrying a current of 5.0 A is the magnitude of the magnetic field due to the wire equal to the strength 1 pii,k/pa7lh 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 directions.d5g / w2x,+bljw n+vgf They are separated by 40 cm. What is the magnetic field in the plane of twgf5dl bv+gn /x2+j, whe wires at a point that is 20 cm from one wire and 60 cm from the other?

  Two long parallel wir6 .dmo od ja:v(66bqtxes carry currents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the magnetic field x.d tb o6:aqjo6(vmd 6midway between the two wires?

  Two long parallel wires carry+ dh10yf/e0/ dg3jdnratdcxb6z i0 s) currents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. At what point between the two wires are the contributions from the two wi 0df1 )+g zn/yhtjdes/cr i36bx0dda0res the same?

  Four long parallel wi*8j(j d*zxtscq a g40jres each 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(j8 q4s*0jazj*t gxc d 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 currentsx ufz5yfdq.ivw;, 3i9 1k33 xq dm(ddf of 5.0 A and 8.0 A in the opposite direction. The wires are separated by 0.30 m. Findq53 k( ix 3dxym9 fqf;1 zdviwdf,u.3d the magnetic force per unit length between the two wires.

  What is the magnetic field r.3sji;1t svcat the center of a circular loop of wire of radius 4.0 cm when a current of 2.0 A flows in tctsjvi1; 3s. rhe wire?

  A solenoid 20 cm long is wouyvrh( :yd.:hc nd with 5000 turns of wire. What magnetic field is produced at the center of the solenoid when a currh r:h.(v c:ydyent of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carries a current of 4.0 A. umx ncr,xs831What strength of magnetic field will it have at its cen 3s8crn1xmxu,ter?

  How much current must pass through a 40u *zf pmz+tx +( ,0yt9yqv;jml0 turn coil 4.0 cm long to generate a 1.0-T magnetic field at the center?;z v9fzyyj(qm, xm0l*t++ up t

  How many turns should a 10-cm long solenz*(8 qqdj91jg ;bo e dkgjkitj9qw +(gz3b;v4oid 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 rectangu5/,5 ;ykn fptmy.lmvnlar loop of 120 turns that carries 6.0 A if its dimensions armnyvf5 .kl,p5n/ my;te 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a unicxjf2 .g)z)b d 6cgk+gform 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 perpendiculj dg+)gc.k )cb6xgfz 2ar to the magnetic field?

  A circular loop of wire of cro/dy3sv3z1 n mrzpf/ ks*oa2 o6ss-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 A is in a ma*rkt2 7lz 4dllgnetic field of 3.5 T. The loop has an arelkd2l74 *trz la 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 magnetic field of 0.l0 fwk/lup6 3r30 T. The cur3krflwl0/6 up rent 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 why65q r6d.0 upa4 okurire 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 iso6u6 ykupahdr 50.q 4r the magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop vbbq,hah.z/ ls7/ svh7 azr35 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 sinz:.*mn w;iiki .,6glxwyq4io gle-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 wit2lu n 5k5zr4zkh velocity $6.9 \times 10^6 \; m/s$ 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 purj5;t1 s vkh,wb, pr)otential of 1.0 kV and then moves into a magnetic field of 0.040 T. What is the radius of the proton's resultin5wrb1krhtsj;u,) , v pg orbit?

  A proton is accelerated from rest through 500 V. It enters yuum/y)yihvkwwi(r/ 4+ a (s m/. 3aema magnetic field of 0.30 T oriented perpendicular to its direction ow(eik4m/s iyaua rmu/y mh(./)3yvw+ f motion. Determine the radius of the path it follows.

  A beam of electrons is accea2)lgr, ipk.d( do+ axlerated through a potential difference of 10 kV before enterin(o l+dar k.)g2 ,dixapg 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?