If the north poles of two bar magnets are b +ulch v0v/wtjs ca1gc+x ,a6+2ss7i prought close to each other, the magnetvs2scp++76 iw+0l s cvauc/thgaj1x,s will

  If the south pole of one bar magnet is brought near the north pole of a secon7ltq9ky e+v vkc0;2nad bar magnet, the two magnets will9a;t2 0keyl kvvqcn7+

  If a bar magnet is dikty* l6jo1a b)a (y mtwc/,fm7vided into two equal pieces,

  The Earth's geographic North Pole is magneticallym1 ts1h/-x 8m6g6wecxwf cix-(oa j 4b a

  The south pole of a magne5qnyw.2 vlq; yt points toward the Earth's

  An electric current prodr9b i*a874:zfs z ddxfuces

  Which of the following is co -6hr*iw 3 vvh j5v-acupexx/)rrect?

  A vertical wire carrien :aex5rumeq7z::e) es a current straight down. To the east of this wire, the magnetic fiee:q7 ereeu mx :)5zn:ald points

  A horizontal wire carseqgxb:h2wi ( +2d vu;ries a current straight toward you. From your point of view, the magnetic field caused by2vs ;e+qud bg:(wx2 ih this current

  A current carrying loop of wire lies flat on a jo9 8p((oryf hbn+lp8o upqw6id6+ /atable top. When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnearo 8(+b /d( piyluopfn 6q+p8w 6ojh9tic field caused by this current, outside the loop? The magnetic field

  A current carrying circular loop of wire lies flat on a ypqfc/86: te itable top. When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic field cac pty: e6f/iq8used by this current, inside the loop? The magnetic field

  The SI unit of magnetic b68b5*nw o vppfield is the

  1 T is equivalent to9a qv * kr;9krfn9kcs*

  The direction of the force on a current-carrying wire in a magnb6u7qhi /k:bkuc7k1l u wao53etic field is descrikl/75h kub1qaiwb7: ou 6cku3 bed by which of the following?

  The force on a current-carrying wire in a magnetic field is the stronnua c 8 *5ldx,;vmj6rn*teiv5 gest when

  The force on a current-carrying wire in a magnetic fieldk,3aktz 3av 6g//hcb q is equal to zero when

  A vertical wire carries a current straight up in a region whi0( q8h+fq rhcere the magnetic field vector points due north. Whahfq+ rq08c(h it is the direction of the resulting force on this current?

  A charged particle moves and experiences no magnetg .c317s tmeinic force. From this we can concltsgmi 3c.n e17ude that

  A charged particle moves with a constant speed through a regiowb:w sgid,-j5r7x)e fn where a uniform magnetic field is present. If the magnetic field e-5sird) b7 f,jgw :wxpoints 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.dozq5kb.pu 2 9 The magnetic force on this bodkp2q5uz .9particle

  A charged particle is injected into a und 0 ,b,pj3vnpziform magnetic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring the particle's weight, the0b, npzjdp, 3v particle will

  A charged particle is observed traveaxo1pr3 oj+b3 ling in a circular path in a uniform magnetic field. If the particr3 bj3aox1p+o le had been traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e travels in a circular path s.;(ppqtvlox2 b1kh9 in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of the circular path wp v(1bxkt2;l9poq.s hould have been

  At a particular instant, an electron moves eaqetm5q9:x( 2b fg ;-e-.q(qmmylrxdbstward at speed V in a uniform magnetic field that is directed straight downward. The magnetic foq;exm. tb2 q:5(x qmm-ybdg q-(lfe9rrce that acts on it is

  An electron has an in+ fr2bx z6k3clitial velocity to the south but is observed to curve upward as th xrck3bl6 2z+fe result of a magnetic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a region where there is a uniform 208nx*li cs05puu actmagnetic field in the +y direction. What is the direction of the magnetic force on the electron? (+x to right, +y up, and +z 0itsxa0 u5* p8cl2c unout of the page.)

  The magnetic field prnn 2/-v 8dkiqm/qaq9 goduced by a long straight current-carrying wire is

  At double the distance from az,vm5h7n(p e-ht 8j1yvv* c6g bhdnn3 long current-carrying wire, the strength of the magnetic field produced by that wirenevg n(hn *5713-vvb hhdc68z, myjtp decreases to

  Two long parallel wires placed side-by-side on a horizontal table x wo6quy0r7qa-g3- 3j2wiham carry identical size currents in opposite directions. The wire on your right carries curj3i-ha x-6 q uwgqaym r230w7orent 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 wire2wlz /-v6tw76 dssm:nyi +a s6g 0bqwws placed side-by-side on a horizontal table carry identical current straight toward you. From your point of view, the magnetic fieldawdb/w 7q:+26iv s6gmtnw6z0y s-wls at the point exactly between the two wires

  Two long parallel wirewe2ue 2t 44z-o *keduh we87gfs carry equal currents. The magnitude of the force between the wires is F. The current in each wire is now kut whgod2e z47e*ufe-2 ew48 doubled. What is the magnitude of the new force between the two wires?

  A long straight wire carruu 1x0 gp5/tgmies current toward the east. A proton moves toward the east alongside and ugx0/gu 15mtp just south of the wire. What is the direction of the force on the proton?

  A wire lying in the plane of the page carries a current toward t75sm 8k*9qjunttczziw ))0 s)6flchlhe bottom of the page. What is the direction of the magnetic fonm8t iz u9k c0)7)hw t)qf5lcz*slsj6rce 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-side on a horizontal table. Ic6ff3g 1n-627 86ldtq kbtvv dzas(vjf the wires carry c- 6lbvn23 t66qt(zvksfdd78afj vg c 1urrent in the same direction,

  Two long parallel wires are placed side-by-side on a horizom8h 33 6i7l mm01xr:bxpservtntal table. If the wires carry current in opposite directions3b:s0i t8vh mpmle 3m71rrxx6 ,

  Consider two current-carrying circular loops. Both are made from one strandjy y46y5z3ebj of wire and both carry the same current, but one has twice the radius of the other. Compared to the magnetic field at the yyj534z6ey jb center of the smaller loop, the magnetic field at the center of the larger loop is

  Consider two current-carrying circular loops.h3mra2; 6( wgko8ld nu8pyol 4 Both are made from one strand of wire and both carry the same current, but one has twice the radius of the othern8pl;8d(36hg m 2k4oyorw ula. 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 the i()p (mzu *u5jjuzoh bqn96k9loop's magnetic moment and the magn( u(juqu*zjbkm5o)nhz69 p 9i etic field vector is

  When placed askew in a magnetic field, a current carrying loop t;kk:; rcmm dn2qatz6z/ gp5h yl1v;t/ hat is free to rotate in any direction will experience a torquechr6t1 q 2zmz /mg va t:k5dklnp/;;y; until its magnetic moment vector

  What fundamental fact underlies the operation of essentially yxn*tu4.dlq h: (w)afall electric motorslq :fy4wx*)tanuh(. d?

  A circular wire loop lies in a horizontal pla1cceoi0g. 5 5q8lqum mne 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 hor55 c.mqq0oig1mc uel8izontal. 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 accelera-3s vc: ,xin wj b8m:jeb)wdpl+2i4x eted 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 velocitl+ixisbe pwb x c,wnj2-48) emvd:: 3jy 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 pary-riou*r5 aw .z+mqm 5ticle passing through crossed electric and magnetic fields. The forces exerted by these fields.rw *o aqy+i zm5-um5r 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 fdlj+v,dozd-v /ho6,ou -sa + a current of 0.60 A is oriented parallel to a uniform magnetic -,6a/+odsov d,zo-uj+d hv f lfield of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a direction od 74ef.xljfk1p 6snbf06q 8acf $30^{\circ}$ 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 it is plfgyk ; tk6yo;3aced in a magnetic field of 0.020 T?tf6gky; 3koy; 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 massn5cff79 qnv p. of 0.050 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 the weight of the roc fvqn57nf9.p d?

  A stationary proton is in a uniform magnetic fielkudsbn1r8 l *9d of 0.20 T. What is the magnitude of the magneticsknl18r *bdu 9 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 speed2m*9qpfn v zk/ 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 of 0z ,v h1w)aqyg$5.0 \times 10^7 \; m/s$ 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 c44s ws.5vdsnwith 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 spee apw01r1/z8(zlfvxo-5siv did 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 s(jsk0b5--vl d ybprcm87 pc3qpeed 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 o31 lfk:b3l r,+ek tarcf $3.0 \times 10^6 \; m/s$ 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.;tlskrudn6 -l1 mp7p h0z2c*n What is the magnitude of the magnetic field at a distancet6u dnllk*2- hc07psmr ;n p1z of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magnetic ktis4.j:l4y o n 3fxf3field at the ground, 10 m ftsxyl4kof:3 .inj3 4away?

  How much current must f+v yzhfp 7l+j/95u0dtcfvf2z-fh0 rw low 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 wire carrying a cures6b0 0geuyb* w+cyh ;rent of 5.0 A is the magnitude of the magnetic field due to the wire equal to the strength of the Earth's magnetiesc*h+e ;0 6b bu0gywyc field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry cu51 x4usd0lmej rrents of 10 A in opposite directions. 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 wire and 60 cm0l4e m5usj dx1 from the other?

  Two long parallel wires carry cq5tf2 y cbhe7r.rj6: yurrents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the magnetic field midway between tyh.qb 7fc r:5 ter62yjhe two wires?

  Two long parallel wires b thh+(m(q;mhfp4a 6scarry 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 conf m(;hhp+th asm64(qb tributions from the two wires the same?

  Four long parallel wires each carry 2.0 A in the same direction. They abst gywo3 i l4r:x w:bl9t g/i77ofgw/,)h0h 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 79 4x:0ysw: hw f,tgl bt3)g w/bori/7ighola to the other wires?

  Two long parallel wires carry currents of 5.0 A and 8.0 A in the opposite dig-tg p0:x oci* 5gnto)rection. The wires are separated by 0.30 m. Find the magnet-gcitp:nx t g )og*o05ic 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.u kqxqg 0p22ipr h7c100 cm when a currenh70qppu 2r1g i02c kxqt of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. What magnetic fb f6bls7(/hoi)4 k ckwield is produced at the centerhbfl()/ si4k ok6wc7b of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is zml1huik:s. j1 osc27xglqx2. k;nu:0.10 m long and carries a current of 4.0 A. What strength of magnetic field will iqx2o1:.jl :muh x;7us lz kc 12i.knsgt have at its center?

  How much current must pass through a 400 turn coil 4.0 cm long to generate +-tu/i u3 ms9tl.cnyea 1.0-T magnetic field at the cen+tucnti/uemy9. 3-s l ter?

  How many turns should a 10-cm lonzpz3- 3 .cufrc+ wr;jdg solenoid 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 mompicbqe4me3z * cz :pm e93r:p7ent of a rectangular loop of 120 turns that carries 6.0 A if its dimensions ar7zq* mep rcc3zie3p:e9m b4:pe 4.0 cm x 8.0 cm?

  A circular loop of wire of radius , u wtjyci3kx8+)3ijt0.50 m is in a uniform magnetic field of 0.30 T. The current in the loop ijk 3u8j3t,) witxc y+is 2.0 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-sectional sv+ms/omfc6 :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 magnet 7dbvpbj8; fo)ic field of 3.5 T. The loop has an area of )o7bvpj; fb d8$0.12 \; m^{2}$ 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 uryxxcy3m2 d x8sc2o.l2 tog(2niform magnetic field of 0.30 T. The current ctldsxy2238xo22x mcoygr( . 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 field r0c4vovc mg1 mt39m frx cjh:9ig57 o,of 0.30 T. The current v9513cto h,c40gx fjmmi9vr:mc or g7in 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 wire loop of /ul64h5w 7 g ck ,o0chnvc//affb t*gfarea $0.25 \; m^{2}$ 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 singwmeup 3rqc hx-q)r3a63hih; 7 le-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 velocityrw j42p;c xb-chnywu0cl,c 91uhh /0n $6.9 \times 10^6 \; m/s$ 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 then moves in.zro+l0 js o n(a-/w/ayj37ds5 cebg tto a magnetic field of 0.040 T. What is the radgw+ /(els j srt0od73a/j5b za-c y.onius of the proton's resulting orbit?

  A proton is accelerated from rest through 500 V. It enters a magnetic fizmqccey113p8 1 t: jw3xq(.i6fo lvmqeld of 06 ti3 xm m3:pzeolcqc 118 w.jfy1(qqv.30 T oriented perpendicular to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated throug9hqdsj/xhgeua j) t h,2+0h;ph a potential difference of 10 kV before entering9+gu atp)xjse; 0hhh,qd/h 2 j 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?