If the north poles of two bar magnets are brought clodz6v ypsl cq a:) -trfyucbd48.bu 9,4se to each other, the magnetac.b)bpu t446 9fls vdy8c -r:uzdyq ,s will

  If the south pole of one bar magnet is bro 0d0cmh4 qsn,lxu/;c2fw b/ * mnqj:4a bfa:jnught near the north pole of a second bar magnet4s xfablw4/df c2/nhj;: majb qm*0u0nncq, :, the two magnets will

  If a bar magnet is divided into two equal piece-euo74h - bmmls,

  The Earth's geographic North Pole is magneticv.q3da qtmv )gb(e -p3dp/k6 jally a

  The south pole of a magnet points toward 7 +u+w ihdanhq6c)isjzam.1q9 p e-.uthe Earth's

  An electric current proda1m76in q w 4xe0.pizkuces

  Which of the following is ekpld b2b*d 7jfd:)*kx9bdk6correct?

  A vertical wire carries a current straight down. To the east of this wire, the rby0jnb cl 1 ,lx6;2 gsno-t/qmarx 0s l/ltycn; 2ognb6,-b1 jqgnetic field points

  A horizontal wire carries a current straight toward you. From yourgih*f.dak3*2 g /dy3 u8ganyd point of view, the magnetic field causy3i2* 8ga3 .fyn *da gkdgd/hued by this current

  A current carrying loop of wire lies flat (-yj( 0.z u-iqlpun1lg( alrxon a table top. When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic field caus(j-ql(rz1ax (y ip l.n0lg-uued by this current, outside the loop? The magnetic field

  A current carrying circular loop of wire lies flat on a table top. When viewed (;ixqeb.sm do3k0a5b21uiat fx 1q u32 .bmd (oebikai0st;5arom 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 field

  The SI unit of magnetic fieldmnz8elmz* w mva;1 o2eab-49 v is the

  1 T is equivalent tomvz6n tt-5s4i

  The direction of the force on a current-9g08qnswcm qvj (g:ibjy, ho7 /yaavp3. 9 ga,carrying wire in a magnetic field is described by which of the followinbgpsag: aa jh3q.0v(y,, wvc8mj/g o79y 9qing?

  The force on a current-carrying wire in a magnetic field isxkkm.38 l7; uwmx+lfd the strongest when

  The force on a current-carrying wire in a magnetic field is equal; 9v5kv:tbh1igg.eclf*: gpe to zero when

  A vertical wire carries a current straight up in a region where the mxaqv:x--ae1 xrjw. u9agnetic field vector points due north. What is the direction of the resulting -vx q1ej.w: raa9uxx- force on this current?

  A charged particle moves and experiences no magnetic force. )4h j yme)k3idk2r9:idvh d:3erx n/g From this we can concludygk3i9:nd)dj)23ed/h :h rve 4 mikrxe that

  A charged particle moves with a constant speed through a region where a ua; s byvc grjz*-p h;)2+x4kzxniform magnetic field is present. If the magnetic field poin;;pj2xg)cr- syz4 *xh+vkzbats 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 2kl s/c6lw o6- y5euhmforce on this particle/6llh e s2co my6k5wu-

  A charged particle is injected in-,)j ypkq (jueto a uniform magnetic field such that its velocity vector is perpendicular to the magnetic fipq,j(je u )yk-eld vector. Ignoring the particle's weight, the particle will

  A charged particle is h/fcq ,5x,rvc7 u ji.qnrd kfg::wn( 1observed traveling in a circular path in a uniform magnetic field. If thev.gf51crqk/xuq( ir,jh, :fnwn7c:d particle 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 in a uniform magne,vovarljt*wg g9(f 1t6jq; v/ ticg1 fjt j9l;rvv6 wq*o agt(,v/ field. If instead the particle carried a charge of +2e, the radius of the circular path would have been

  At a particular instant, an electron moves eastward at speed:pwynjq4x3az 7r g+o- V in a uniform magnetic field that is direc3:4 jpnoxaw+-qg r zy7ted straight downward. The magnetic force that acts on it is

  An electron has an in i:)sq7 yy xok+-n6aoguiiy91itial velocity to the south but is observed to curve upward as the res6 o7g+iii1:o)syky -9yna q uxult of a magnetic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a regikvcxwjwmo(s q dq17 c *j x/4/40auq+fon where there is a uniform magnetic field in the +y direction. W4 w/xx0 q*qawjscq uoc jdk4mf +(7v1/hat is the 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 iv-9h.ml* xprlong straight current-carrying wire is

  At double the distance frza ebk; 548kljom a long current-carrying wire, the strength of the magnetic field produced by that wizlk5ab;ej 8k4re decreases to

  Two long parallel wires placed side-by-side on a horizontakfklwioo /76 h;2n4.w ar ni:cl table carry identical size currents in opposite directions. The wire on your right carries current toward you, and the wire on your left carries current awaywoan kic; n27. 4iwfr kl6/ho: from you. From your point of view, the magnetic field at the point exactly midway between the two wires

  Two long parallel wirzcff9,w cco8or8;3oatp0 u) is;wv:z es placed side-by-side on a horizontal table carry identical current straight toward you. From your point of view, the magnetic field at the point exu8o9 tocffa; 3 ioz)0c8,z:wsrpc;vwactly between the two wires

  Two long parallel wires carry equal currents. The magnitude of thewlcxk 2 ; dprr17wzso()2 vk.q*2oj(iizkiu0 force between the wires is F. The 7;s (q v0wolk r. )i2*o rijz22zdk1pwc(uxik current in each wire is now doubled. What is the magnitude of the new force between the two wires?

  A long straight wire carries current towh/qy8 .xis7 xnard the east. A proton moves toward the east alongside and just south of the7nhs/i y8.x xq wire. What is the direction of the force on the proton?

  A wire lying in the plane of the uvg27kli 5. wf3)xrpx page carries a current toward the bottom of the page. What is the direction of the magnetic force it produces ru)72l k53wvxxgf .pion 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 tableb-a dgtl.*2 mz. If the wires carry current in the same dirzg.b-* mad l2tection,

  Two long parallel wires are placed side-by-side on a horict/0- liw s ,6n4 i6sdpqwo/aazontal table. If the wires carry cuaw0sw6-tl n4 pic/ dqsio/a6,rrent in opposite directions,

  Consider two current-carrying circular loops. Both (7r8 e yp 2*ohn.gcvmqare 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 yhg8.pmcr *venq7o( 2the larger loop is

  Consider two current-carrying circular loops. Both-67 )xwnt4b;rw )acy7q yh hvt 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 magneticy chtatnwxv)-w;)b 67yrq7h4 moment of the smaller loop, the magnetic moment of the larger loop is

  The maximum torque on a current carrying loopij8s, 9tat* dm occurs when the angle between the loop's magnetic moment t aj8tsdi* m9,and the magnetic field vector is

  When placed askew in a magnetic field, a curreny4.4 xc :cn ;d llnikr+yzefi(v*82qd t carrying loop that is free to rotate in any dire* ;n qdl(4d 8z+i.ylf yrvk4nc xc2:eiction will experience a torque until its magnetic moment vector

  What fundamental fact underlies the operation of ess45mw qwue ib 1+rz0a1ientially all electric motors?qw aw5e4bm+izu 0 r11i

  A circular wire loop lies in a horizontal plapp wm9+t:14ix esom+ane 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 horizontal4o1wte9+ax+sp m m :pi. 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 accelerat9 )k+.v plh.qghsitfuzd/hb vu63 x(2ed through a potential difference V and allowed to enter a magnetic field B, where it is deflecv 6 ih/x)vf.(z udql2 h9tphu3g kb.s+ted 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 crossed e)l 6sqim,gr6 0ip,.a jfgjae;lectric 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. In the following, disregard the magnitudes of the fields. In a velocity se.6la;fsri e0p )gmgj, iqj ,a6lector, 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 to a uniform magna5uh k2lnb* 020 xw j*fge2wfeetic field o2 xbka 2 *e fw*ue052jlng0fhwf
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 xydgy/ikm0v:ny890 :jvi jy;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 carrpsbu.kcptj y7p+pox;+uc ue(1 2 ::nzying 5.0 A when it is placed in a magnetic field(pcu1us+ kc2bn +. y;pzjo7p::e pxtu 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 has a mass of 0.050 kg and is i9w70jmkjl/ djn a magnetic field of 0.10 T. What mi 9 jwjdk7/ml0jnimum current in the rod is needed in order for the magnetic force to cancel the weight of the rod?

  A stationary proton is in a uniform magnetic field of 0.20 Tc ks6d- g-0)p*qaamhv. What is the magnitude of the magnetic force ond* 6c)-0k -mpaq gshva 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 spee: +0jo8 sci:-gicknnv d 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 specwwfom,)rl()x4zmic cp8rv8m.wy;52 zpof . ed 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 withto3kh i/k*2g m 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 sp7,vg 3lga0mi8 ab5dt)+wl qrteed 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 spee0 2pm- cvt;p ,i3z kef:a,pcgld 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 nl.2 kmo3 fh 4kzyjx*r+p, 9ih$3.0 \times 10^6 \; m/s$ 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 magnitude/ djfwdr.g1w / of the magnetij/1fd w/wgrd. c field at a distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magnetic fieitk 25:hy(p drfb):fc+8xtfu ld at the ground, 10 m5kt bfi( xf:hd+pr: 82tu)cyf away?

  How much current must flow fon m:.)r-qlq mnr $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long straight wire carrying a curr:+.6l vye 53ya deafpzent 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 ayavp3l6ezy :e 5f d+.about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires f.l.x uk:gmx-e (,eca carry currents of 10 A in opposite directions. They are separated by 40 cm. What is the magnetic field in the plane of .x ,(eluak-mexg.f :c the wires at a point that is 20 cm from one wire and 60 cm from the other?

  Two long parallel wiresajamzqo 6b-( yo/jfei88 ; r)p carry currents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is )8r zqef-bpaoo8;a ym6j(i/jthe magnetic field midway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite directions/n+;r ; sy j;yl8eupll. The wires are separated by 0.20 m. At what point between the two wires are the conpjrly ;8 ;+ln/lu; esytributions from the two wires the same?

  Four long parallel wires each carry 2.0 A in the same directr b a/usw8l(xgs20e m8ion. They are parallel to the z-axis, and they pass through the corners of a squa0 sm8xs/bwl(u8eag 2rre of side 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 8.0 A in the opposite directk.g9dv.d hdp)9ch2 oy0algk 5 ion. The wires are separated by 0. g.d 9d25)kd.ykl 9hocv0hapg 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 wireb2ca aj7r-i8 s 8obgbwa2s4f:t1gyt9)wt ux / of radius 4.0 cm when a current of 2.0 A flows i1tto7b2 aar8b8)w abitsjf g :-9cwuxg2y s4/n the wire?

  A solenoid 20 cm long is wound with 5000 s0k/ fab(sf/a turns of wire. What magnetic field is produced at the cena0/ka(f/f ssbter of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carries a current of 4.0 A. W s.fyme,x0 i)ch/cb9 yhat strength of magnetic field will it hmh ysbiccy.0fxe ,) 9/ave at its center?

  How much current must pass through * r f ir* nq80/dq5qhhwk6hms8a 400 turn coil 4.0 cm long to generate a 1.0-T magrn6/kshhhq8 0q*mdqw ri*8 5fnetic field at the center?

  How many turns should a 10-cm long solenoid have if it is to generate axv: fz 0yno,8p $1.5 \times 10^{-3} \; T$ magnetic field on 1.0 A of current?

  What is the magnetic moment of a rectangular loop *)th)njmi ei qu v5cjqt 7o*cy0((pv9of 120 turns that carries 6.0 A if its dimensions are 4.7)qmcn5q )y0c*veo9(tpt(j *i hjvui0 cm x 8.0 cm?

  A circular loop of wire of rx8j/*uq, pubeadius 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 plane of the loop is p ,e8qxuu pjb*/erpendicular to the magnetic field?

  A circular loop of wire of cross-iu;g eq),acno9+z os+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 cuni ej id*ik(i2p*6d5z,r7c ib rrent of 2.0 A is in a magnetic field of 3.5 T. The loop has an area of *i*52ipik6i n(7 dcrie, jbzd$0.12 \; m^{2}$ 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 of1rr/(gl5na z)jx) 3fn .mireo 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 thon5xz .a3/ (rf)j irl1rmg)ene 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 fier1g wc ewf*)n4m6of0w ld of 0.30 T. The current in the loopno* c f)gm 01wrw6f4ew 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 arezo *g,f(lnab- zjs2k-a $0.25 \; m^{2}$ 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 spectrometerzlj)6f oy9 i j. b7y(jbhv,x6v, a single-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 rj012l/ xcfqh with 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 thro p,k wg;ckc1 p of0dj7h5: 1zixjgrd--ugh a potential of 1.0 kV and then moves into a magnetic field of 0.040 T. What is the radius of the proton's resultrg -o :k0 5-gci,jpz1px1d7cw fj ;hkding orbit?

  A proton is acceleratedd hn9ajwt-2l+1b:: oyydmp:g from rest through 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Determine the r:t9hy j1pmy 2w:l+g a:bnod-dadius of the path it follows.

  A beam of electrons is accelerated through a potential difference of 10 szvd/z9);4 r9eq e4pmgxj 1dh kV before entering a velocity selector. If the B-field of the velocity se9x ph 4s;1r) 49dv/gezzq mdjelector has a value of 0.010 T, what value of the E-field is required if the particles are to be undeflected?