If the north poles of ts9.6(lue ugwxwo bar magnets are brought close to each other, the magnets willu(slgx.w e6u9

  If the south pole of one bar magnet is brought near the north pole oo /3o 6ano7o, k gm eynk2xl*t9+rwyk6f a second bar magnetn t lg 9nmo,/ke* r+ xykoyw76oko3a26, the two magnets will

  If a bar magnet is divn1*j+ nbh crk(ided into two equal pieces,

  The Earth's geographic North Pole is magnet o7mwpa wn2kyg0eg0 ),ically a

  The south pole of a magnet pointr h6tlp),g6pm s toward the Earth's

  An electric current producesxwk(ob5()5 epo: s 3vcxghe0q

  Which of the following is correct?wi w:2k6rit0+s4zub t f31hk o

  A vertical wire carries a current straight down. To tj i 4 q +-66xp/a2 0rymabqhhh/nqn6kehe east of this wire, the magnetic field poiapaq640qniy hmnhj krh6b2q-e6/+/ xnts

  A horizontal wire carries a current straight toward you. From your point of vierf1 jnpf(pg :kw)h2 so-.kx:mw, the magn2pjf: gh)(-fop k1w nk. sr:mxetic field caused by this current

  A current carrying loop of wire lies fu9y,e k6kk ,5b: 7eeoi7pjylylat on a table top. When viewed from above, the curyui6 :l ,75o9 ej, ye7eykkpkbrent moves around the loop in 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 ongder0 iq9iv d*62lc4t cls-t2 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 caused by this current, inside the loop? The es 6q2t 2i -l9i*vdrlc4tc0d gmagnetic field

  The SI unit of magneti,2 sx99.b: pvaoprbblj 9f4ijc field is the

  1 T is equivalent to djm,nn87iu/iu f+z* o

  The direction of the force on a current-carrying wire in a magnetic field is +1*b ,eyagq a prev.5odescribed by w+bp*y.1avee5 , ag oqrhich of the following?

  The force on a current-carrying wire in a magnetic fiel 6rocnu1e5is m 7rvkz)/wkz) 3d is the strongest when

  The force on a current-carrying wire in a magnetic field is equal to zero5f8-) c0juxzwbd3a)wz7vuxl when

  A vertical wire carries a current straight up in a region where the magne. 5qi6jfs5ssihrn x )2iut( t2tic field vector points due north. What is the direction of the resulting f i2xq) 5inj .tsth(2fiur65ssorce on this current?

  A charged particle monttt6ug1tc;;f 0* x )zu kr9mmves and experiences no magnetic force. From this we can conclmntr*f6tm90;;)utzx ug1k ct ude that

  A charged particle movek7 xz1b,wx a+dmyy( m2s with a constant speed through a region where a uniform magnetic field is pr x,wd2b +y(max 7ykm1zesent. 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 magnetl6(okl s (3ik3 ft g.wgsz;mb+ic force on this par6l k 3sm.g( gfb;i3lzo t+w(ksticle

  A charged particle is injected m7zi7 b.2s9yd3kd pmevaa/ (linto a uniform magnetic field such that its velocity vector is perpendicular to d(dpsm 3ibek.mz aa2/l79y 7vthe magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in a circular *x)qz dl8gh*o+l g-ee,iil+i path in a uniform magnetic field. If the particle had been traveling twice as fasqzdo8l *i,*-ig ee+hxlli )+g t, the radius of the circular path would be

  A particle carrying a charge of +e travels in a circular path ij1s7/q4l 5atsca*peqhl n :5b n a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of the circule1h*tss4q5lqpc j b: a/la57nar path would have been

  At a particular instant, an electron movesyek0fra6.wx,w b*y 6i eastward at speed V in a uniform magnetic fewyyik6x* 6,0ar . fbwield that is directed straight downward. The magnetic force that acts on it is

  An electron has an initial velocity to the south but is observed to curve upwar gi2oy)+yfv-fd as the result +y)o iyvgf-2 fof 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 mpk/zphn,;z( d) jaso4b 5-u-b wd6 gahagnetic field in the +y direction. What is the direction of the magnetic force o-/dnw kbgh)sh4o;u6a- jz,5a ppd bz (n the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced by a long straig 65y8 jw hnzsmi-k*c3ght current-carrying wire is

  At double the distance from a long current-carrying wire, the strength of t*()pwt6 -gq prgp7f ruhe magnetic field produceppgtu-p)wf g r r7q*(6d by that wire decreases to

  Two long parallel wires placed side-by-side on a h;a 7 :qj b2mv.y2zpsqsorizontal 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 away from you. From your point of view, the magnetic field at the points2pvqy.zm:;j72sa q b exactly midway between the two wires

  Two long parallel wires place*)g g*zeopiud- g wyw7;(em(m+crg 6i d side-by-side on a horizontal table carry identical current straight toward you. From your point of view, the magnetic field at the pgp((ue **z7gg;m 6 co dg+ri )ymew-wioint exactly between the two wires

  Two long parallel wires carry equal currents. The magnitude of the2 azy-rc- y-ph force between the wires is F. The current in each wire is now doubled. What is the magnitude of the new force between the two -hz-ya2rcyp-wires?

  A long straight wire carries current toward the east. A proton moves te rgbk/f/h +3joward the east alongside and just south ehjfkr +b g3//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 4 raxxtlr1 r1*gk+rck3gcc 9doa875atoward the 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 plk cd roxcr31c a +x8 97*g5a1trkr4galane of the page, from your right?

  Two long parallel wires are pl;0+/ +pfmfjcb hyhg.t aced side-by-side on a horizontal table. If the wb/m++0yfh .;pjc thf gires carry current in the same direction,

  Two long parallel wires are placed side-by-side on a horizontal tablel:4eyuo, 5xpd(n7 x ea. If the wires carry current o(ep4y7 x:,5 xladun ein opposite directions,

  Consider two current-carrying circular loops. wl4xle fec24, tz. j+dBoth are made from one strand of wire and both carry the same cur, dl ezl4ctw42 +fxe.jrent, 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 the larger loop is

  Consider two current-carry f*)j)cigob hj+ue4 z)(pno ,ving circular loops. Both are made from one strand of wire and both carry the same current,u( o4*on+ ,)jp))ig j vhzecfb 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 cur(we5 t :i-f)zh/ o( )tov.l dko6vjgqnzxb4-mrent carrying loop occurs when the angle between the loop's magnetic moment and the magnetic fievqnlet5/d w -t xo( o).6(-f :vziokbj)4zhgmld vector is

  When placed askew in a magnetic f ,s-x ybrs*9tq03bg gzield, a current carrying loop that is free to rotate in any direction will experience a torqs b30st gq*gxby9z-, rue until its magnetic moment vector

  What fundamental fact underlies the operationmvti(ijv98p gd l 5 *j(yr-nn-k1iin3 of essentially all electric motorsp tv9 (8n-i*i5i(vnmr j3d1i jn l-gyk?

  A circular wire loop lies in a horizontal plane on a table and carries curr+ei2;yy*i1nu/ oh ft fbuw8 .ient 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 the torque caused;t1fu.ifo/wiyb 28ui yhn *e+ by the currents interaction with the magnetic field?

  In a mass spectrometer a particle of mass m and charge q is accelerated thro (f2sfd0p en8 ji*/kztugh 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 mdf0 nske8 z f/(ijtp*2agnetic 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 q.dz3z wn uw:zk)0+( fbfxsu.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. Izknxubqs w(wzu. d+)z:3f0f. n 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 to a uniform mdd1 2:szfdr*iagnetic fieldrs*21f dd i:zd of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current5;09jxpt+wk76 h; q5l kgpvk lm8jytx 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 straight wire carrhtom h*fu+ 41iying 5.0 A when it is placed in a magneticho1ui tm4*fh+ field 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 9cs52l sbxzn8p7m8 br 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 ros8x9b5b8nrzclm 2p 7 sd?

  A stationary proton is in a uniform magnetic field of 0.20 T.ih)9ft6b;wa vln2a rq mr4 /o8 What is the magnitude of the magnetic force on vn fa;9 lw a/h64)qt 2oirmr8bthe 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 d4/4za8uxw1y n p5u+wl h:vj;tpq,hpd 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 wn uj+q3w2gnv1c63ie n:p2nr $5.0 \times 10^7 \; m/s$ 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 wiacvt g-*7h7 hvw1xu4 u:w0uvyth 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 66mu3m(z* gbkbkkf,rpasxf 6 k5.yr5a 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 wit t,4 buh-z/.ua9jgi b:meij4eh 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 ofi0+qa8fbr2op- alow/2k 4b zb $3.0 \times 10^6 \; m/s$ 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 omqn/, hr4 uh0wf 25 A. What is the magnitude of the magnetic field4wnh/rhu0 qm , at a distance of 0.15 m from the wire?

  A high power line carrying 1v9f:g fx6d.)ndow b)t000 A generates what magnetic field at the ground, 10 mnf)fw.:gbo6xt vd ) d9 away?

  How much current must flow for.x4t(gd*px wgkvx 1kqc*(4k k $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long strai-/ks4m tl0 qhsdw)x n5ay,u0eght wire carrying a current of 5.0 A is the magnitude of the magnetic fiel e q5w- mtnk lyd0)s/0suax4h,d 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 currentx, iewiahr1 xv387w7ws of 10 A in opposite directions. They are separated by 40 cm. What is the magnetic field in the plane of the w v 78,3wxrw1 e7hwiaxiires 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 5.0r+v3 n sll)au5m8l0 yd A in opposite directions. The wires are separated by 0.r830 5+mvln l)uyalds20 m. What is the magnetic field midway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite dire+ 4uxxew t)m(xctions. The wires are separated by 0.20 m. At what point bexxt( )w x4um+etween the two wires are the contributions from the two wires the same?

  Four long parallel wires each carry ulhh;5 j1e*gt/ c/q6ua2)kdg afb et8 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 dj /faa8 15leubtgqh*/ )g c2h6u;ke tdue to the other wires?

  Two long parallel wires carry currents off/ irs3i t r*mdgo6rb+z4k73x 5.0 A and 8.0 A in the opposite direction. The wires are separated by 0.30 m. Find the magnetic fmr7x g*r/foi+ sdk 3z4ibr6t 3orce per unit length between the two wires.

  What is the magnetic field at the center of a circc/a)mmdov e.hv8u:g 5ular loop of wire of radius 4.0 cm when a current of 2.0 A flows :hc /)aemvd5u mogv.8 in the wire?

  A solenoid 20 cm long is wound witj5:km t)kx5 vpv 7g4rph 5000 turns of wire. What magnetic field is produced at the center of the solenoid when a current ofx5 pkvv:gjt p) k7mr54 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carries a currelcz*.ge9mqwrhu c4l0 gz - ,s(nt of 4.0 A. What strenug(h, gr*-09sz4 lqc.wl cmzegth of magnetic field will it have at its center?

  How much current must pass through a 400v,xa;3-w qme.drxui2 turn coil 4.0 cm long to generate a 1.0-T magnetic field at xq-vme .r,d 3aui2;xw the center?

  How many turns should a 10-cm long soleye ;d/1ilp jb /3wx+bgnoid 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 rectangulav+z md9*a x o8*hcgg4y)ilbg2r loop of 120 turns that carries 6.0 A if itma+ * b8glz2g*c9y)dhvg4xios dimensions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0:tc z 0ml7o4-xr2dnwv .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 perpendicular to the magnetic fi:2wtxlzd4r nv- m7o0celd?

  A circular loop of wire of cross-sectional areamp 96pl 59c6j9 ftvs,b)mgsy z $0.12 \; m^{2}$ 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 3.5qy0 0 ydhq pr; ocsw+f*e2hn+/ T. The loop has an area yn+cy*0/dphw eo q rh;0s2fq+ 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 u3u oea1doxn j 8xu53c/niform magnetic field of 0.30 T. The current in the loop is 2.0 Ae5dox3jo3ax/8 1u cun. What is the magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular loop of wire of60 5txpk8m8d r.)lnpzv6i byy radius 0.50 m is in a uniform magnetic field of 0.30 T. The current in the loo6dlpm0)tz yr8kn. 8 vp5 ybix6p 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 of88a.4 y 49o0mgsm b rf0oktzce 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 (charge e) has a r o0*0bkn4f-c ;pnco bspeed 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 wib4+ut y*ef 5ue0y6 g08prp rxqth 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 potential of 1.0 kV and then moves into a mp+x.(di yo( cu gv*n-magnetic field of 0mcdy*-(v ip(.o+gxu n.040 T. What is the radius of the proton's resulting orbit?

  A proton is accelerated from rest through 500 V. It enters a magnetic field of 2 (h5ncluci8 w6 xlc(u6-gixb0.30 T oriented perpendicular to its direction of motion. 6w (nlux( 5bc-ulih6c8cx ig2 Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potentixd0 /mn7d;z4b x;dxdrd; he/sal difference of 10 kV before enterinx; hxdz;/ xsbd/m07ed ndr;d4 g 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?