If the north poles of two bar magnets are brought close to each other6hr ud rufm4os5u 04nqm3e2h(, the magnets will fqneu 430 h6usm25hrro(4 udm

  If the south pole of one bar magnet is brou4;w2eu f8*i / fv4f vhoov6ikyght near the north pole of a second bar magnet, the two hiw fo eu f*io/v42;vy v6k4f8magnets will

  If a bar magnet is divided in a*e+n:u2k rix2j ir+1o 4goryto two equal pieces,

  The Earth's geograph 5t,k (w 7hb*rrky54 f2ficzvcic North Pole is magnetically a

  The south pole of a magnet poa ,cd xcm q umu3m.i/6kl27r0aints toward the Earth's

  An electric current prodwnlb;et j;b3+uces

  Which of the following is corr2lcf8kykmtg4 b o9v9i p(4rcxd2(g*x ect?

  A vertical wire carries a current straight down. To the easo + 6gsi.t.kyb h:liu2t of this wire, the maoyh s:g+6tu .i2lk .bignetic field points

  A horizontal wire carries a tym w2h3 do.8dgvr0yq :7rmr0current straight toward you. From your point of view, the magnetic field caused by this current7o q .drm3t0r28wh :dvyy0 rmg

  A current carrying loop of wire lies flat +x h7*djdae7 go+ofe,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 this cu 7d7ofxg,j+hoad ee +*rrent, outside the loop? The magnetic field

  A current carrying circular loop of wire lies flat on a table toprwk(rdzhs 1 b)3yy2)n . When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnyzn3)br (h)wyrksd 12 etic field caused by this current, inside the loop? The magnetic field

  The SI unit of magneow-euv+ dgrq*(:/ mahtic field is the

  1 T is equivalent to0u+sl/ xsvfa.

  The direction of the force on a current-carrying wire in a t21hi i85pu81p(sfv hihxtu6a9.r pv )1kuhimagnetic field is described by which of the folloxhhhiva1i5)8 hr p.(p8f vu9t2 iks11 iu t6puwing?

  The force on a current-carrying wire in a magnetic field is th;(uoy g;ax.p: +ji:z okmwq3 xe strongest when

  The force on a current-carrying wire in a magnetic field is equabb.il omg mjot05*x50l to zero when

  A vertical wire carrijf z.9(62/wm2uwfec;o/foinxioib 5es a current straight up in a region where the magnetic fiei/2ffbzwi(f u6w2o.jmi;o /xocen95ld vector points due north. What is the direction of the resulting force on this current?

  A charged particle moves and experiences ndh wqj2)vw10n 3luj )ko magnetic force. From this we can concludn3) j hw2d)ujqlw v01ke that

  A charged particle moves with a co de/ v9koeqi8 w1cn*h0nstant speed through a region where a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting on this particle will bho1c i q/ed90wev kn8*e maximum when the particle moves

  A charged particle moves across a constant magnetic field.jq9tgyo a* i68 The magnetic force on this parto6*q j9iy8agt icle

  A charged particle is ingfzr-x++s r tyd6 y 6kk99o)vhjected into a uniform magnetic field such that its velocity vector is perpendiculayg+x rd)t6 f k9r96koh+sv-y zr to the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in a circular path in a uniform maheu(un( 2ooj65pzmek /gjq : 1gnetic field. If the particle had been travelingj/p( 2 uno(k:zeq6gmoe 51 uhj twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e traveldtox ;b c;9z :15 klt7kxmfn6xs in a circular path in a uniform magnetic field. If instead the pmz5;: cx1 7kx;x fo96tbt ldnkarticle carried a charge of +2e, the radius of the circular path would have been

  At a particular instant, an electron moves eastward at speed Vbrz:p zz p5f/jtc.cdv ./6bf3chu3c7 in a uniform magnetic field that is directed straight downward. The magnetic 5jbz zuf6c / rcf3v/pp3.tzcd.hb7:cforce that acts on it is

  An electron has an initial velocity to the south but i5da okwssf0u .e*p)1fs observed to curve upward as the result of a magnetic fdu s . f50p1sfok)*waeield. The direction of the magnetic field is

  An electron moving along the +x axis enters a region where there h89 oy zi /f78)a(chhr*punie is a uniform magnetic field in the +y direction. What is the direction of the magnetic force on the electron? (+x to right, +y up, and +za8 n /(uz eo cyr9hpi7ih8f)*h out of the page.)

  The magnetic field produced by a long shmorot)se gwq8 ,8n7,cxg f4f8k t3.straight current-carrying wire is

  At double the distanpnuklxys1 ig*)9tpvizt 31.ng 9 *b b7ce from a long current-carrying wire, the strength of the magnetic field produced by th3p gn1sybt9 k bl vi9xz7.pu*tn*g1)iat wire decreases to

  Two long parallel wires placed side-by-side on a horizontal taba9 tsxml2uqfj 1dag/hjm s:j ;p/ 0o(5le carry identical size currents in oppost; 2(1a fp0o95:ujjxsh gm/mslqajd/ite 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 point exactly midway between the two wires

  Two long parallel wires placed side-by-side on a icml1 c1 u u7 d:l1wajf5c+ip:horizontal table carry identical current straight toward you. From your point of view, the magnetic field at the point exc7ma:5j lucpwud1f+:11i cli actly between the two wires

  Two long parallel wires carry equal currents. The magnitude of the vz8+9wa 8bx: rntww7 mforce between the wires is F. The current in each wire is now doubled. What is the magnitude of the nnx8 zwmwvbr 798 ta:+wew force between the two wires?

  A long straight wire carries current toward the east. A proton moves toward v9/nksfr0di3q 9xyq5 the east alongside and just south of the wire. Whqndq v 9yks0f9x5 r3i/at is the direction of the force on the proton?

  A wire lying in the plane of the page carries a current toward the bod,ai1zhx9z./xd0 ,e ycx0 par ttom 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 plane pzaddixhy.r,0x e, x9c z1/ a0of the page, from your right?

  Two long parallel wi7 7s2rg ybqf/7z lz+*of 1byktres are placed side-by-side on a horizontal table. If the wit1+sy z blq/2bo y7 fr*g7z7kfres carry current in the same direction,

  Two long parallel wires are placed side-by-side opkc; fy4vj9u6i z3ju 7n a horizontal table. If the wires carry current in opposite direction7iu3c py; vjkjf9 u46zs,

  Consider two current-carrying circular loops. Bothv fwz m*+d5ejy,rxmlcvgz *za )f1 .7, are made from one strand of wire and both carry the same current, but one has twice the radius of the other. Comparv, y5*+zx) fjvgwz,ce1 z .fmdamr7*l ed 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-carrying circular loops. Both are mi -acque t-+; n 7fod1,dhypn/ade from one strand of wire and both carry the same current, but one has twice the radiu-dfh+tiaq-1 / d7ypen ,cnu;os 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 occurs when the ww8/*.gniz cmangle between the loop's magnetic moment wg/8.n*mzciw and the magnetic field vector is

  When placed askew in a magnetic fieljh +u xf9e;fvx;iiy9.e0f,rtd, a current carrying loop that is free to rotate in any dir;xu it;xj9 .i,0 f+reevyffh9 ection will experience a torque until its magnetic moment vector

  What fundamental fact underlies the operation of essentiallyl cg)z56.txn oxnam,a26 (droa2*kjh all electric motorsmaa z 2h6njxdtn c6x )okgo,l.5*a 2r(?

  A circular wire loop lies in a horizontal plane bc6gb;sf8f z;q:v9h(vkane5 g- s sm -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 side of the coil tends to lift off of the table because of the torqueszg9 a g cb:b5;;vne6 -kq(-vfmshs8f caused by the currents interaction with the magnetic field?

  In a mass spectrometer a particle of mass m and charge q is acceleratedn8 7ys ztup.q1 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 17ztspy qn u.8perpendicular 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 parti/,24g k zh:b/gynr3po mvj1h mjhu7rrs f30,kcle passing through crossed electric and magnetic fields. The forces exerted by these fields are in oppositekrh zj po033f4 msnry, :2bm7hg/k/rvhg, u j1 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 a current of 0./ lzd: 5i8k)ql4r ujve60 A is oriented parallel to a uniform magnetic/jlr ik8lu:zd) 5v4eq field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a direction offwjru*z v +qnkst :h*,y6 d2*c $30^{\circ}$ 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 straighi-4rbvm rf yib+pgk50up 7 q(*t wire carrying 5.0 A when it is placed in a magnetic field of 0.020qb+-rrpu5(gkv im p fy04*7bi 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 in a rxx(6sc . .g5gfpy;scmagnetic field of 0.10 T. What minimum current in the rod is needed in order for the magnesy.rc sx6cfp 5g( xg.;tic force to cancel the weight of the rod?

  A stationary proton is in a uniform magnetikdw:ro.a08mr95n m,yitim y-7 or9io c field of 0.20 T. What is the magnitude o :o5om7mo rr.ydr8y9ka9t0,mwi -inif the magnetic 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 wi)phijbp. -z,tze;tf 7th 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 speed ofa zp j)4+ cqspep((v.n $5.0 \times 10^7 \; m/s$ 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 j bom:2,lq seip8v 9teym8;.kdue 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 spud2n+p+ple 2lj8m 1 m ya5+ofueed 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 speed of 6nw ;5 xgow5rh9 ig; +9sdgwro$8.0 \times 10^6 \; m/s$ 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 m9a7h */qrcawof $3.0 \times 10^6 \; m/s$ 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 tl8b -h+d6aos vhe magnitude of the magnetic field at a distance of 0.15+ s bod6hal8-v m from the wire?

  A high power line carrying 1000 A generates what magnetic field5g w)m3pl)txxkcm x16c6j *-c t;no ln at the ground, 10 m awaxjxglcm*)wmctpc 13xn56 nk6l t )o;-y?

  How much current musty 6apchqp94- cuq)4c8pv2m1cjdq8p z flow 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 caez542b 9gwcn0pujlkn 62,tktrrying a current of 5.0 A is the magnitude of the magnetic field due to the wire e k 2jln6e9kcb4t0 5w ,zutn2pgqual to the strength of the Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry curreno:xqjj69 /e nrqda).ets of 10 A in opposite directions. They are separated by 40 cm. What is the magnetic field in the plane of thx/er6e9j n.jaq)d o q:e wires at a point that is 20 cm from one wire and 60 cm from the other?

  Two long parallel wires carry currents of 20l khh46c h:york22i:c yb2w0r A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the magnetic field midway between the two wirei6kh:2ryk cc2w r0 :hh4 2oblys?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite direction-0lz,2o)rvlr ptu j;g s. The wires are separated by 0.20 m. At what poo u tz)rpl;l2r0-v, gjint between the two wires are the contributions from the two wires the same?

  Four long parallel wires each carry .on 3h wxw nawtb6h3r7wl):*a 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 do67)al3h bw:t3ahn wr wx.o w*nes one of the wires experience due to the other wires?

  Two long parallel wires carry curren u ohp m( p.xn;wm6;cch+x(b )ccn)nc.ts of 5.0 A and 8.0 A in the opposite direction. T+b ch;cu o.n((wxc )mp)nc hmxp;n. c6he wires are separated by 0.30 m. Find the magnetic force per unit length between the two wires.

  What is the magnetic field amn4 fv 02mc kh1-olderlo6y-6 t the center of a circular loop of wire of radius 4.-l e4mdrfo66c-nh201okl ym v 0 cm when a current of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns offn*fjw--crl /tof/ e/k +7s jx wire. What magnetic field is produced afo/jwck/l7n+rxj *ft s/e -- ft the center of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 (zuh9o) y1d; va;jprim long and carries a current of 4.0 A. What strength of magnetic field w9 uo1 jrihd(;; zpyav)ill it have at its center?

  How much current must pass through a 400 turn coil 4.0 cm lolkcmz *dwl)cggxz2h/a g(152 ng to generate a 1.0-T magnetic ldx k*gh/ z52czglma2cwg )(1 field at the center?

  How many turns should a 10-cm long solenoid have g6e*ie5ob h b-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 /rlaci8:da .xqh7e +v of 120 turns that carries 6.0 A if its dimensions are 4.0 cmhd i xe/v7qlc.r 8+:aa x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a un-yd d.xdmk 3-lv 7rgi1iform magnetic field of 0.30 T. The current in the loop is 2.0 A. What is the magm3v-id 1ld7kx-d r. ygnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wirevi* aipe nxqpofk2. 48+z 9v:g of cross-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 current of 2.0 A is in a max no17 iz5g6gfgnetic field of 3.5 T. The loopx1f675oz gnig 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 wir+uq2q ltyxy8 ,e of 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 the plane of the lt8, q lyu2q+yxoop is parallel to the magnetic field?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic field of 0.30 wns):co ys f3 48 emexe.s*rv2T. The current in the loop is 2.0 A. What esw8rs* n:eevs) .om4y f xc23is the magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop)s.e a1z /s7qgzac 4cu+/x obk of 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 paeqy/ml7b 6x;m)im , bcrticle (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 vh5qevkg 5r+. nelocity $6.9 \times 10^6 \; m/s$ 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 )(8e+s(dfw zlxe k, ntw,,sdymagnetic field of 0.040 T. What is the radius of the protwks fxd ,eyst z8w(l )+,nd(e,on's resulting orbit?

  A proton is accelerated 0m )gxm* xf ko3io*rc 1z +q*obto)-ooczsr16from rest through 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Determine th+ 1ro)cfg k 063ozczobt)o*im x1x-r**ooqsm e radius of the path it follows.

  A beam of electrons is accelerated through a potential differens8 q3bbw4utn 5*ty/jw ce of 10 kV before entering a velocity selector. If the B-field of the velocsujb *twtq3ny/ 4bw58ity selector has a value of 0.010 T, what value of the E-field is required if the particles are to be undeflected?