If the north poles of two bar magnets are brought closj6ngwe8uw*:rak gp s e ,qe4vv8 -qr.2e to each other, the magnets wi8e pewve8gv:, as2 r.gu rqqk n*w64j-ll

  If the south pole of one bar magnet is brought near the north po*jcp- ia crlu xu+t9()le of a second bar magnet, the two magnets wiul ac ijr*p-xt(9+c)ull

  If a bar magnet is divided nw5 up ylbhh6.vtbc3c6o+ :*e into two equal pieces,

  The Earth's geographic North Pole is magneticacb rf;8o(m.dj lly a

  The south pole of a magnet points toward the Earthphox,.oz ar03n hc.w6ec i:0 v's

  An electric current pftv0tg 2se (5:.pa8cc zuui j) ,use1lroduces

  Which of the following i8p/ c2jbbb+me8 ags9f) dlkeez3p g/2 hu3tl.s correct?

  A vertical wire carries a curren.s4+ktd0g cen)iy gk tw+s,8it straight down. To the east of this wire, the magn,i8g c4ye0 .wknsgd k it)t++setic field points

  A horizontal wire carries a current straight toward you. From your po 6o,mg 7t8jblmint of view, the magnetic field caused by this 6jtlmob7,g8m current

  A current carrying loop of wire lies flat on a table top. When viewed from abon6q cv)kv ;7jw( 5reercner* 6ve, the current moves around the loop in a cok56re j7)*ncerr qec;v 6wvn(unterclockwise 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 u* ui)1t/nu4a ewsx h0qaj(,z wire lies flat on a table top. When viewed from above, the current moves around the lzx qntea*wj )aui/shu 0(,14 uoop 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 field is the o61rsduf9 14;l7tvzsn)l a/wv)e gyp

  1 T is equivalent ton;k+jgg sv r)yu8k7r 5

  The direction of the force on a current-carrying wire in a magnetic fk(g.1wm glk8sield is described by which of the follo l8ksmg gk1.w(wing?

  The force on a current-carrying wire in a magnetic field inan pj7* een 0v/3epa*s the strongest when

  The force on a current-carrying wire in a magnew.,bpkfhrb)uxc7 0:ptic field is equal to zero when

  A vertical wire carri;fu+ysm8ek9c32xkk9q *i i4hj g bl1 ;g,ndkges a current straight up in a region where the magnetic field vector points due north. What is the direction of the resulting force on this curren9 g8i*s dqc mkbe;4i1gkxu; y, fh+gnk3k 9lj2t?

  A charged particle moves and experiences no magnetic force.;ne+9o8z7 :s trit nqbav22 owpku,6b From this we can concl2i9e:2r 6nq;votb zkt a7pbs +8,nuo wude that

  A charged particle moves with a constantyml yi0 id(;4r*cuwl 5 speed through a region where a uniform magnetym*dyl;i40r5i l u(w cic field is present. 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.t j uo*y2*aku0 The magnetic force on this partojk*y*a0tu 2u icle

  A charged particle is injected into a uniform 8*dz1)yzaia n magnetic field such that its velocity vector is perpendicular to the magnetzin y 1a)zd*8aic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in a circular puv2jo-uc w+cv5l1 4jeath in a uniform magnetic field. If the partiul-ov1wj 5u c 4ev+cj2cle 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 pathpy u50ojb gq 96 *weug,/)m-gklf stg; in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of the circular path would hav 5gu/ )sjwyu;g g ,*olgb0kqet-pf9m6e been

  At a particular instant, anc2y opk;1oa+l .g 2uta electron moves eastward at speed V in a uniform magnetic field apg212oouk;.c tly+a that is directed straight downward. The magnetic force that acts on it is

  An electron has an initial velocity to the south but is observedcdlpxa + , bro.y6g+n. to curve upward a ag,od6y.p+bn.+rx lcs the result of a magnetic field. The direction of the magnetic field is

  An electron moving along the +x *:rnycx1 g f09k/mo2he m lz;aaxis enters a region where there is a uniform magnetic field in the +y direction. What is the direction of the magneticrcm xo: m/y n*f1gk9ea20 h;zl force on the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced by a long straight current-carrxb5h *8nw.(5xq( qcuzwgk;h pying wire is

  At double the distance from a long current-carrying wire, the strengt96ukaa0s fr z1h of the magnetic field produced by that wirezuk091aa 6rs f decreases to

  Two long parallel wires placed side-b*. u pngeg6+aby-side on a horizontal table carry identical size currents in opposite directions. The wirepbuane* g+6g. 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 horizontal table carryyn0 mv yuhu65 67fz sn04baz(w identical current straight toward you. From your point of view, the ma4v66u0az 0yubs nw 57znh yf(mgnetic field at the point exactly between the two wires

  Two long parallel wire71e rf-m svys4s carry equal currents. The magnitude of the force between the wis4r 1sv-e7 yfmres is F. The current in each wire is now doubled. What is the magnitude of the new force between the two wires?

  A long straight wire carries curr scz 6 q2.rr8*lwdnib:ent toward the east. A proton moves toward the eaz* rsnd6 iwr8q.:2clbst alongside and 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 the bottom of theg 7l6dwqrk9i5 bdnm79 page. What is the direction of the magnetic force it produces on an electron that is moving perpendicularly toward the wire, also ilg59q7kb di nm6 r9wd7n the plane of the page, from your right?

  Two long parallel wires are placed side-by-side on a horizontal table. scnhn v/m5 p7,js:k:g If the wires carry current in the same direction, pn7s:k:js nmvgh /c5,

  Two long parallel wires az:ybfe5h370odbc/cq+b dd4 u1fi.tf(pl 6 nare placed side-by-side on a horizontal table. If the wires carry curreq/b:uh 6cf( e+abb dpo.1 tfd7l0c54ynidf z3nt in opposite directions,

  Consider two current-carrying circular loops. Both gebm bqpu8 p(y37*y.c 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 magne c bp7g.m8 uyy3b(qpe*tic field at the center of the larger loop is

  Consider two current-carrying circular loops. Both are made from one strand ,h4 l;cgt+*n b iu4i97tspnal of wire and both carry the same current, but one has twice the radius of the other. Compared to the magnetic moment of thenlutbn9t ih4cgsp; l + i4a7,* smaller loop, the magnetic moment of the larger loop is

  The maximum torque on a cu-pikfbsh*:1;bi- w bp rrent carrying loop occurs when the angle between the loop's magnetic moment an hb:--;ip*s1fibpkwb d the magnetic field vector is

  When placed askew in exdl(.ob) or(a magnetic field, a current carrying loop that is free to rotaob (.xo()ed rlte in any direction will experience a torque until its magnetic moment vector

  What fundamental fac )ytz 9rua13bhain6 +zt underlies the operation of essentially all electric motors?b tr nz 3)i+y1uaza69h

  A circular wire loop lies in a horizonta1/u/2x 9rnr/mygloumbk3s6i l 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 horizontal. Which 9 oy 32um1 u/ix6gmnl/brr/ksside 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 acceleratedaketl -l+mvi7-;cfu7 through a potential difference V and allowed to enter a magnea tikvllmce- +7;f-u7tic 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 mass of the particle in terms of B, q, V, and R.

  A velocity selector consists of a charged particle passing through crossed yyol+y2 n/a w)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 magnitudes of the fields. In a velocity selector, the particles move toward the east, and the magy/lon+y)2 w aynetic field is directed to the north. What direction should the electric field point?

  A 2.0-m wire carryingcxcxy*s +6 p4 s2zl8fqoesh8 . a current of 0.60 A is oriented parallel to a uniform magnetic 826xp4qc l .xsf*hos ys+c8z efield of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a curres 8wt-qmyh. w:2-vpuint 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 (pidv-/zgc i8 a straight wire carrying 5.0 A when it is placed in a magnetic field of 0 (-icig8vzp/ d.020 T? The wire makes an angle of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0e jn9now 41v yz 3,pah/bm;dd( m long has a mass 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 rod?nzvjwp,o;ny( 1h 9b3dad4me/

  A stationary proton is in a uniform magnetic field of 0.20 T. What is4g6z8wk qhvn) 0k(d ec the magnitude of the magnetic forv)k0(gd4 hwncke8 z q6ce 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 with64wlzh0b(w6ws) dwf i 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 spdkfx1rk.6-8 drs. wyy eed 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 d 9y8fuq9lntg*ue 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 s ,x/y)(lpvczqxi)y v+peed 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 witzl1b;3:yt 1jdm3hhcqh 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 ouxi* vyua0h.6 f $3.0 \times 10^6 \; m/s$ 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 thybpcz tf9i :f5+*i 4aoe magnitude of the magnetic field at a distance of 0.o*9ty:f +5bc 4iif zap15 m from the wire?

  A high power line carryingw /a8o1+:ddreagdix4 1000 A generates what magnetic field at the ground, 10 do+ada d/ie48w 1xgr: m away?

  How much current must flow for y clopc4.u w+bysc2*+$1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long straiuglxze75hqq/cf0oecm9jl 60v )-1 wjght wire carrying a current of 5.0 A is the magnitude of the magnetic field due to the wire equal to7fx)j-ml/cqw001j5zq9 co6uee gvhl the strength of the Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry curren; nn(ric.l mmc1p67br ts 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 p;cbr(r6nmp1c 7l.im n oint that is 20 cm from one wire and 60 cm from the other?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite dir 2vba*kybj41 kections. The wires are k4k a12yvjbb*separated by 0.20 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 direzv(ca9k*5vygw o m+f.ctions. The wires are separated by 0.20 m. At what point between the tv 9+f vwmozg5(ky*. acwo wires are the contributions from the two wires the same?

  Four long parallel wires each carry 2.0 A in the same direction. They are paralk8qld7jrn*sku2dw,0 k7-nn zh zgf,( lel to the z-axis, and they pass through the corners of a square of side 4.0 cm positioned in the x-y planeq 7 8 *zdjl07u,sn nkdrzw( kg2-hkf,n. 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 oppoo tp8fisko .arj9tow ;u53e30 site direction. The wires are separated by 0.30 m. Find the magnetic force per unit kouto3s0.fp; 8wejt 5or93ailength between the two wires.

  What is the magnetic field at the center of a circular loop of wirep / 4rs-4(wc s;ychlxf of radius 4.0 cm when a cuyl;r/4pfx hw4 c- s(csrrent of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turnswu3d 20,e50vi)v opte j*s n5dj8pcfs of wire. What magnetic field is produced at the center of the soleno d *sef2j5j p)5we0 vv3co,s8p0tidnuid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long a,i w7 jot7u:ul6ke3j8cu; weuvt9d8e nd carries a current of 4.0 A. What strentjt:ej6i;ueu 87,8lu39ec uw 7odw k vgth of magnetic field will it have at its center?

  How much current must pass through a 400 turn coil 4.01gyliu *6x8 (m-vte qt cm long to generate a 1.0-T magnetic field at th e(yv6 gqmu ttix1l-*8e center?

  How many turns should a 10-cm t22 pas)7ounhlong 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 o8n,74pyfu jb .*c mime) chnm5u xy)u*f 120 turns that carries 6.0 A if its dimensions are 4.0 cm cn f7u h y)mum.*uiyxb e)m cp*nj,548x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a m 3c p. b9mlr5xs:i ibn/i*vp,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 i i/ c 9s *vx.,5plrmib:3bnmpis perpendicular to the magnetic field?

  A circular loop of wire of cross-sectional area 1cg lktzt6o7y.2hx /mx7q6b s$0.12 \; m^{2}$ 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 3.5mex*: -ta c0rb T. The lo :-c0t*abxme rop has an area 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 ))cgjxmd ,2e/b e tv)jin a uniform magnetic field of 0.30 T. The xe) tjvmg/jd )ec,)b2current 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 mk,k)spa ga *.5;hnkv ,6ifx r+ jbqaqhn(q)v/ 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 parallel to the magnetic f;kbi vk.,qg aqspxha)hnv )a6 k+* rfq 5/,(jnield?

  A circular wire loop of a,9eylwzpq9y zd3 kkw* s6hb0 ;rea $0.25 \; m^{2}$ 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,v (q5tr1z3fy2up np-7d .qizh 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 with velosi )bg a ni/l1vc+ *)k(gqsm:n+gt7klcity $6.9 \times 10^6 \; m/s$ 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 magnetir7z5m9 omgu9hc field of 0.040 T. What is roug 5m9mz79h the radius of the proton's resulting orbit?

  A proton is accelerated from rest through 500 V. It ent,ovojl 4e b.0l: h/wsjers a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Determine the radius of the:0 o.ovlj/lhbs ,jw4e path it follows.

  A beam of electrons is accelerated through a potential difference of6l ;kp 2ax6yp2o zy:gkc7xdk7 10 kV before entering a velocity selector. If27ko dk6x;ykgp xp:a2 cly76z 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?