If the north poles of two bar magnets are brought close to each other, the magz*se1j7wj: mhdxx a7v4b3;b snets willmxejx3; 1:hj szvw sad4*7b7b

  If the south pole of one bar magnet is broug p r w;e3iwwv0y46z-thht near the north pole of a second bar ma4 w t- pr;e03h6ywzviwgnet, the two magnets will

  If a bar magnet is divvw f:91ju zc)uided into two equal pieces,

  The Earth's geographic North Pole a xmvj/ -.yr5c8xld 9kt, nw)ii-*t vois magnetically a

  The south pole of a magnet points toward the Eartho2f0t)fp zl: pv9c)zg's

  An electric current producesl9g6 mpyq2a k8c6p6jy

  Which of the following ic8.5 rt4gmzy7dt+ vnls correct?

  A vertical wire carries a curr elbb6sxi1 :c+ent straight down. To the east of this wire, the magnetic field bice61:x b+s lpoints

  A horizontal wire carries a current straight toward you. From you1b)kf ,jz)z2g uff9nj r point of view, the magf)kz21)z ffjng,9 bju netic field caused by this current

  A current carrying lon6uladt pjs/ 5/t1)8khwxie 1 op of wire lies flat on a table top. When viewed from above, the current moves around the loop in a counterclockw djtnx l516)h8p ti//wes1aku ise sense. What is the direction of the magnetic field caused by this current, outside the loop? The magnetic field

  A current carrying ciu4tq4d .+y9zo1i1 rix bs0xue*vc.or 3 qq b+lrcular loop of wire lies flat on 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 thisql yqbuor9d.c0t4uzie4xqx+r 3o .sb+1i v 1* current, inside the loop? The magnetic field

  The SI unit of magnetic fie ula6rx (n(9ak;mp64wmi q9 awld is the

  1 T is equivalent to, j82cir n*ydh

  The direction of the force on a current-carrying wire in a magneticc(of m ntl9x73g,eld. field is described by odl3 m.l7nxctf 9,( egwhich of the following?

  The force on a current-carrying wire in a magnetic fieldu60u f a/6+xuujb6 b:kmkmox2 is the strongest when

  The force on a current-carrying wire in a magnetic field is ec* wf ljxo((sv ;;cl,bqual to zero when

  A vertical wire carries a curbu( lew/5b:a7ec .r aqrent straight up in a region where the magnetic field vector points due north. What is the direction of the resulting forblbqe(uw7 c5/:e a.a rce on this current?

  A charged particle moves and experiences no magnetic force. From this we can cm 3mjv;mv) 3bve6n+e t8+rnbt 8g:pdm onclude thammt bv3tj p8g+ n;evb8+mr6mn)v:3edt

  A charged particle moves mq np5:mfg,fig/tl9 9 2 4brhpwith a constant speed through a region where a uniform magnetic field is present. If the magnetic field points straigg9gtpn mbffrqh/m 4 l95p,i :2ht upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constu0js )q 1jnf,fz-t/dtant magnetic field. The magnetic force on tt/jj 0su,d-zfqf t1 n)his particle

  A charged particle is injected into a uniform magnetic field such that its velo+s r;9 .,t6qkupbnoxee a:x7g city vector is perpendicular to the magnetic field ve;sgt . x6u:9p bn+7x,o ekerqactor. Ignoring the particle's weight, the particle will

  A charged particle is observed travelo*q0avt ; b jxi4bq8v 1;ako3ping in a circular path in a uniform magnetic field. If the particle had been travp1jaq*ixvqto;; 4kb3b 0ova 8eling 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 unifory c,0ly l e6qafg.xj.1m magneti,qj.xe f1g0 .yllyca6c 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 V in a unifor ,,w s:zl:jdeim magnetic field that is di,d : ,w:iszjelrected straight downward. The magnetic force that acts on it is

  An electron has an initial velocity to the south but is observed to cuhoe f0cl-dydq .x.w 5a4/a:norve upwardqof .y 54 alxedwo/a c.dn:0-h as the result of a magnetic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a regiaxal*8qm xnjdxzg2,z*y8n4:, o b1nlon where there is a uniform magnetic ,*mn ,2 yo*lxlna8x:4adgb18jzxnq z field in the +y direction. What 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 8 5wyqom0q+nmsmg)v- by a long straight current-carrying wire is

  At double the distance from a long p:(r mjddrfn 7yqcbsz4s7* n:g-ai+ 8current-carrying wire, the strength of the magnetic field producrrg7-bjm d py:4s *sadqfncnz+ (7:8i ed by that wire decreases to

  Two long parallel wires placed side-by-side on a horizontal table carry idedmee qjsi( z2r-++)kbntical size currents in opposite directie qd)k zr+ bi2sm(e-j+ons. 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 horizontaw-tcm4. * cpdgl table carry identical current straight toward-t .mpcdg cw*4 you. From your point of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal cu5*fhmn q i 0ftyoyrna3-i*0 )jrrents. The magnitude of the force between the wires is F. The current in each wire is now doubled. What is theq0myh 5to -ynnir j3i**)0faf magnitude of the new force between the two wires?

  A long straight wire carries current toward the east. A protop5rk4cs sn c1w2ft-j 8n moves toward the east alongside and jusj wc rts8p2k5s-c41fnt south of the wire. What is the direction of the force on the proton?

  A wire lying in the plane ofn,b sj3g hvs q038clg5 the page carries a current toward the bottom of the page. What is the direction of the magnetic force it produces on an electron that sn8clbshj 3g0 gv,35qis moving perpendicularly toward the wire, also in the plane of the page, from your right?

  Two long parallel wires are placeq5whj1 qlojw )7ie.1)-wluw pd side-by-side on a horizontal table. If the wires carry current in-. wil1uwj)jwl 5wqe1) pq7oh the same direction,

  Two long parallel wirer ujo6oh 4wy+39stk)l s are placed side-by-side on a horizontal table. If the wires carry current in opposite directi9ruojlwh 36 y4okts)+ons,

  Consider two current-carrying circular loops. Both are made from one stranq,nchopouk 4jy65y(tsl vr/p8: 3y 5w(chb.j d 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 fie3jlph65 oo5(r/vu4p c : c,8.ywkbqstjy(h ynld at the center of the larger loop is

  Consider two current-carrying circular loops. Both are a7;an3h p a8symade from one strand of wire and both carry the same current, but onea7 ahs 3a8;pyn 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 ocg5x8 7h7uwzxy curs when the angle between the loop's magnetiwz hyxg77u8x5c moment and the magnetic field vector is

  When placed askew in a magnetic field, a cuns; e1o wcp h9e,*tgt:*c0f ryrrent carrying loop that is free to rotate e;p1c *g9o yehsf:w0*rt,ctnin any direction will experience a torque until its magnetic moment vector

  What fundamental fact un jh4)eieu uvf71eqxbx)u 6 u)7derlies the operation of essentially all electric motors?fe u7)b q exv6uu7 i)xj)4u1he

  A circular wire loop r ek(3si-dohcidb9+v.q )e /plies in a horizontal plane 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 horizvb + (/eqkrdp)soic.h-d93i e ontal. 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 j rxed/f-*z1 :fa+boug cr)7g+quo*fa particle 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 expression for the m d+7ez)r1/ffgq a*uogjx:rf *+u -b coass of the particle in terms of B, q, V, and R.

  A velocity selector consists of a charged particle *xj q(-fzdia8m-cr:w 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. In the following, disregard the magnitu fc-xz-* i8:(arq jmwddes 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 parx ib(zpsbu 08u5j)fe+allel to a uniform magnetic field0+i zsub5ue b)p (fj8x of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current+xl. rsu8vy 5h 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 pen2e akq(o1 vs+cijj 6tq(;2 kjt34mu tr meter on a straight wire carrying 5.0 A when it is placed in a magnetic field of 0.020 T? tjo (tvqqjcn u 2(+3msk2t;j4 a1ik6eThe 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 0.0q7f;qr myrmx 6m4 ya-6h3gvp8 50 kg and is in a magnetic field of 0.10 T. y 8mr74pqh3fmam -qy r6gvx6; What minimum 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 T. 0x2sbqxl( 6pu/ cyfzjxq-k,0What is the magnitude of the magnetic forc- qu 6 q0s/fzy0, lkjbxxx(c2pe 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 witelos3r( ue*igc z)s6w:wo3ui, ey h*; h a 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 w myl4hngjbw;zw9493 speed 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 due6x.f4p; hcfd1 js r)zy north 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 gnx;( d zkajwa* g(6l( qt;waip*z9c+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 with a spee(arwq4t 7w 5l(e+eze 5oi0vryd 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 opv a.- -ma/s0zwf .hv:2dgdbgf $3.0 \times 10^6 \; m/s$ 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 mag96c)fjmha* +bo +1v3 /sotyhombrx;i nitude of the magnetic fi6ra t3 fj o1cisyvo;+m) h+bb/mx9o*held at a distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates wh g9ffa jv2emp6t c:.6eat magnetic field at the ground, 10 m a62a.: gve9fe6cmfp jt way?

  How much current must flow f t(y +;)mo wcjbp-jj-wor $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long straight wire carrying a current of 5.0 (i fa i t 3efbnm47hsv yhdh0n2ds*6-(A is the magnitude of the magnetic field due to the wire equal to the strength *iiea7(24sfhh- n( t3vyfbmds0 6 hndof the Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents of 10 A in opp + +6rt5ou hyyoqy)t(eosite directions. They are separated b 5yyhut) (+q6o orte+yy 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 cm from the other?

  Two long parallel wiref3v*zr( vlsiuv e)6o ,s 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 midway between thoe3i 6 zvvsv)ul *rf,(e two wires?

  Two long parallel wirifi;rss, +r jbjn+ lb*+*olh, es carry 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 wires the ,lr*;,bjn h+ riol+s+s*ijf bsame?

  Four long parallel wires each carry 2.0 A i c *1jk5u89ipg6p q) chucqby r13vw i*ds(of6n 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 wir8q 9 hp3 1kcvi*1cyrduoj b(fisgwqu pc6*5 6)es experience due to the other wires?

  Two long parallel wires carry currents of 5.0 A and 8.0 A in the opposite direct 1v gzi1cing t1ss; (5d/o+iwbion. The wires are separated by 0.30 m. Find the magnetic force per uni+n tcwi1/diso g(s51;i1gzvbt length between the two wires.

  What is the magnetic field at t8qqm- t/o6q yahe center of a circular loop of wire of radius 4.0 cm when a current of 2.0 A flows in the- oqa/tmqq 68y wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. hj3- qsj0e5l yWhat magnetic field is produced at tj5-3qy 0jhsl ehe center 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. Wha o4ptvoyzjy.*j , rz)/t stren .t*o4jyr,vpjyo / zz)gth of magnetic field will it have at its center?

  How much current must pass through jsbso0spzj;; et)8y4 a 400 turn coil 4.0 cm long to generate a 1.0-T magneticz4;j ss) e8p yjtb;0os field at the center?

  How many turns should a 1i0x .9h:1 mrtoxdy76w0 nefjb 0-cm long 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 moment of a rectangular loop of 120 turns that cnr5vs:syz8 9-b. ,xh xni g85dam 01 zp5oxcobarries 6.0 A if its di xbc5xhb-osy nisvd z.598, nmpr58a 1z:0o gxmensions are 4.0 cm x 8.0 cm?

  A circular loop of wire of raxcuq(b:j-;pr:8:5kom dt h p hdius 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 perpendicular to the mag5hbr-p jhkdm:t: cqxpo (:u;8netic field?

  A circular loop of wire of cross-sectiona 4ir5hjg42yjz 3- bkpml 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 fieb l3 2x3c28wbb lg2eo(*zomh(ywiqb0ld of 3.5 T. The loop has an area of 3o *z(2ymgb bilebx2 h2wqcb3 0(8low$0.12 \; m^{2}$ 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 uni y6e/ujek g4+hwo 1o l07itr1bform magnetic field of 0.30 T. The current in the loop i il/r0w1e + h4kg7eou1j6tboys 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 0.5ii d( ba1k.ez(0 m is in a uniform magnetic field of 0.30 T. Tdik .az((b1e ihe current 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 wire loop of ar1(rk.impvp+ yea $0.25 \; m^{2}$ 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 singll3lsa5f nu-hv6:(pf73i pfwh e-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 w rw3qbm l w(+h+o+tkp2ith 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 magnetic f6t.1rt28od6fbpb (r gxkn-ylield of 0.040 T. What is the radius of the protn1kg( 8bd6trx b r-ftyp.l2 o6on's resulting orbit?

  A proton is accelerated from rest through 500 V. It enters a magnetic field o sh,tw4ix: 69euhtyx.f 0.30 T oriented perpendicular to its direction of motion. Determine the radius of thyxst .th6w 4,hi9:xuee path it follows.

  A beam of electrons i2+f,d .rxs h2am7jdrn/cps- fs accelerated through a potential difference of 10 kV before entering a vess . drpn mxfh-c2/f2d,ja7r +locity 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?