If the north poles of twg flz .vmln )sp0-7e.mo bar magnets are brought close to each other, the magnets vm)e mn-fsl7p0 lg ..zwill

  If the south pole of one bar magnet u +:sbc rve2 70((k lqiuh+vgjis brought near the north pole of a second bar magne((c r+bq+uhue sglv :20ij7k vt, the two magnets will

  If a bar magnet is divided into two equal pie/pmij7en 8yjrhjm/ip k(:mdz90l/o nvw 16h 0ces,

  The Earth's geographic North Pole is mav6 xdmy c+.)qjgnetically a

  The south pole of a magnet z61f9s os.nqlu,p 1p.se- e 9njrs 3bhpoints toward the Earth's

  An electric current produces,)s:dc9wh kmt7q8d up

  Which of the following is pfp9ar;f 4qe*o8mhx3 correct?

  A vertical wire carries a current straight doh.2l/mi(9hjb3 wepbeeh.mr ca fh+(/en(9 d hwn. To the east of this wire, the m wmhe/aehip. /3d9nhe((j9(lcb rh +.f2hebmagnetic field points

  A horizontal wire carries a current straight toward you. 6u3ovaf+4 q6oaekcjug4p b :-yfm 4c5From your point of view, the ma+ y5ce36mvoq-fu pck: 4abg j44u6faognetic field caused by this current

  A current carrying loop of wire lies flat on a table top. f n x);a3ko3*kk ss0-f;2dbey+hsu oc 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, outside tfssk* du2+)fko3och xy;aen3 0s-kb; he loop? The magnetic field

  A current carrying circular looflpk)vu tp 8/z0*owp+ p of wire lies flat on a table top. When viewed from above, the current moves around the loop in a counterclockwise senk / +w0*8flvuopztpp )se. What is the direction of the magnetic field caused by this current, inside the loop? The magnetic field

  The SI unit of magnetic nai+g iro w0l5 4k cs0cyi:(-vfield is the

  1 T is equivalent to78u) zqr:la:whnw,fu 1xk w;y

  The direction of the fof sx ozd iw9f +)1ih)589zqkgnrce on a current-carrying wire in a magnetic field is described by whh xwgdzf 81i k9s)+o) qn5zi9fich of the following?

  The force on a current-carrying wire in a magnetic field is the stry xrlp ,zup*m)jl9c3xw0-.poongest when

  The force on a current-carrying wire i,p.bvlo8 4trrniqo6 ,z oda65om.0vsn a magnetic field is equal to zero when

  A vertical wire carries a current straight up in a region wh 73bk; pvx9syc j98ejbere the magnetic field vector points due north. What is the direction of the38kb7 99bpj xseyc jv; resulting force on this current?

  A charged particle moves an.kh; yw u (r9 gwijhg8g/5fow.gz/ aibu 3v;m6d experiences no magnetic force. From this we can conclude tuam3z(bg y.5/g g98ukviroj .w6w/;if;hh gw hat

  A charged particle moves with a constal;qehl9-u b.hnt 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 bu9hlq-l e.h; be maximum when the particle moves

  A charged particle moves across a constant magnetic field. The sew8d2qzi epv m0+ fdfp2,36 fn5z1dy magnetic force on this pa+6n ,2 8 fydmpf3ziez1dpfv ed2s50qwrticle

  A charged particle is injected into a lm k:hvx4:m zjhw2a) -.l3fzh uniform magnetic field such that its velocity vector is perpendicular to the k.4l a3:mwlmj- hzx vf)h2z:hmagnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is obses -tu3q0km61re txd ;1g -iizu7i req6rved traveling in a circular path in a uniform magnetic field. If the pgzi16mut-;u6 srqiq 30e7-rex d t1ikarticle had been traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e travels in a ciiccekn4 5n-ml9y/*e ircular path in a uniform magnetic field. If instead the partice*incc9k m4y5li/e n -le 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 uniform m ue2jwr8 kr6l9agnetic field that is directed straight downward. The magnetic force th8lj6krurw 9 e2at acts on it is

  An electron has an initial velocity 8gxjtsj f.dw4 iy0* a3to the south but is observed to curve upward as the result of a magnf xjit w*3ja04d.g8syetic field. The direction of the magnetic field is

  An electron moving along the +x axis enters azk8x47icos l y4+68 rodwo xm5 region where there is a uniform magnetic field in the +y direction. What is the direction of the magnetic force on 47 o s+iwo56k84m dzlx8 oycrxthe electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced by a 40 +kzn3zhbktl pq6*/e7ebzk long straight current-carrying wire is

  At double the distance from a long current-carrying wire, the strength i2lug5 .(8ud.jj oggt of the magnetic field produced by gid gg.5uljt( 28u j.othat wire decreases to

  Two long parallel wires placed side-by-side on ahw fh6c/oha -6+deeo) horizontal table carry identical size currents in opposite directions. The wire on your right carries current toward you, and the wire on your left carrwc+ h- )e66fhoha/odeies 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 p q.a27j9+bempseu-9 w+rty vxlaced side-by-side on a horizontal table carry identical current straight toward you. From your point of view, the magnetic field a.eqpmeyr- s9b+av j x2u9+7wt t the point exactly between the two wires

  Two long parallel wires carry equal currents. ktfp gbz n2ww4wpax/6r - u-zl n3q*1*The magnitude of the force between the wires is F. The current in each wire is now doubled. What is the magnitude of the new force betwee-6- n k b*zxw*/tnl gzqu4a23pr1wwpf n the two wires?

  A long straight wire carries current toward the east. A proton sfisgmf,1p3 rm/ d +1vmoves toward the east alongside and just somfv smr/d,1+gs p13f iuth of the wire. What is the direction of the force on the proton?

  A wire lying in the plane of ymo *sm km9xe.f4r(j; 2h29doacc my6the page carries a current toward 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 plane of the page, fro jhm.afr;24*ocdm( xks96ym com92y em your right?

  Two long parallel wires are placexlz*7 jm2c2s3z czb j7d side-by-side on a horizontal table. If the wires carry current in the same direction,23xj*cjzc m 7z2bl 7zs

  Two long parallel wires are placed side-by-side on a horizontal table. tnqf *p4 6f9eoetyi0 x9m1,a xIf the wires carry current in opposite dx,etffo1y69imn tx p4eq9*0a irections,

  Consider two current-carrying circular loops. q.rra6(jq:xck,5d lu Both are made from one strand of wire and both carry the same current, but one has twice the radius of the:qqc56jr k rxla(.u,d 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-carrying circular loops. Both are made from9l,swz7k 1p m37xiwoqi rfeo8e c+ z); one strand of wire and both carry the same current, but one has twice the radius of the other. Compazw+m foq7 73k9e8e i zr;ol)p1xics,wred to the magnetic moment of the smaller loop, the magnetic moment of the larger loop is

  The maximum torque on a current carrying loop -s)4b7 hekydfpal- 8noccurs when the angle between the loop's ma)sd4f eh - n7l-paybk8gnetic moment and the magnetic field vector is

  When placed askew in a magn5 bt (.6rlyizg yg:1doetic field, a current carrying loop that is free to rotate in any direction(zi1rgl tg .:d6oyyb5 will experience a torque until its magnetic moment vector

  What fundamental fact undertdfrr s6193e 0msr9vclies the operation of essentially all electric motorsdr0 s316e sm 9crtfr9v?

  A circular wire loop lies in a hor ga6x5 eysy1-fizontal plane on a table and carries current in a counterclockwise d f -x6ygsy1ea5irection 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 by the currents interaction with the magnetic field?

  In a mass spectrometer a3cu6e ley +t3b 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 mass of the particle l tey bu3c+63ein terms of B, q, V, and R.

  A velocity selector consists of a charged particle passing through :3 ddwdlbrwsp45 8yv0crossed 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 folwdwd db0 s4y58rl :pv3lowing, 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 parall zdsnq,kczc () 8l ;llh1(4u yrr8yl,lel to a uniform magnetic fiel (l8ycdq 1l s,;zkz 8r)lclrhyu(n,4ld of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a9e.fofbk* u r3wp s9u uwu1,1u 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 strabr h6a*q7-tw zight wire carrying 5.0 A when it is placed in a magnetic field of 0.020 T? The wireh6- *zabt7q rw makes an angle of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long -wniqyh/ l5qcmy71 j 5has 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 oji1n5 lmhq7c-wyy/ 5qf the rod?

  A stationary proton is in a uniform magnetic field of 0.20 T. What ))rl py3nk5.ebb3)hcgl6a;bgpv l1 u is the magnitude of the magnb6l)kl1vh rlg)c e)p bnba33ug5; py.etic 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 wii8*l,. ylggw.w7p y qcth 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 (hi9t 2jisfb(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 56 no(zyp.fp2u g5qbjwith 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 speed : y d;dg-e6givof $8.0 \times 10^6 \; m/s$ 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 withikqax s j5+d60 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 ojqf1 3(tnv- ufv,je 3i7f 9b)dj5gsza 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. Whatp6/u x hally,pgi,l ;:m0fw.r is the magnitude of the magnetic field at a distance of 0.1 y: la0rmlli f,pguh xw/6.;,p5 m from the wire?

  A high power line carrying 1000 A generates y0ei ;wbimr w)l5e4i 9bxh.z:what magnetic field at the ground, 10 miy i0:hw;x 4brbel ) 9iz.mwe5 away?

  How much current must floull(jcwu; 3) -hl si9scs/j;t eqr)vy u, bi28w for $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a longxf3z-xn n93o ei natl5v x6 m(65v(vdt straight wire carrying a current of 5.0 A is the magnitude of the magnetic field due to the wire equal ot 5 ((xn6 3x9nzl-xm5fi3 dnaevv6tv to the strength of the Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents of 10 A in opposite directi1fxwqu+ /66cd his6s tons. They are separated by 40 cm. What is the magnetic field uiss/61 +f c6tqdx h6win the plane of the wires 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 5.0 A in opposite dyoy)f w j:k)ke/ qw6xt;g6mk/ irections. The wires are separated by 0.20 m. What is the magnetic field midw fq/y6gkwm;kjt )x/ eo) 6:ykway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite3y* d4/ bst.vz a)z( fiexze;p directions. The wires are sepdvx4 be i.3s)pfyz*/ zz tea;(arated by 0.20 m. At what point between the two wires are the contributions from the two wires the same?

  Four long parallel wires each carlo9o*4gjmfor . c n99gry 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 plal9rfc 9o m.9g ogn*o4jne. 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 i-j xwzhp.bw x ty- ow.3w+0vq-n the opposite direction. The wires are separated by 0.30 m. Find the magnetic force per unit le- pw0ob wqwvy- tzh3.j-w+.xx ngth between the two wires.

  What is the magnetic field at tu y9 y-o0uddcq4) ca +hi:v;aihe center of a circular loop of wire of radius 4.0 cm when a current of 2.0 A flows ioc qia+h;v4u iy09) d:uyac- dn the wire?

  A solenoid 20 cm long is wound qu-w0q8 2c()q bqxhtz with 5000 turns of wire. What magnetic field is produced at the center of the solenoid when a curren q-bqt 0zqx(cq2 uhw8)t of 10 A flows?

  A solenoid with 500 tur,r*4vt p2o ctans is 0.10 m long and carries a current of 4.0 A. What stre,4t2tpo v*racngth of magnetic field will it have at its center?

  How much current must pass through a 400 turne3e lzr9-rq dn60lr* y coil 4.0 cm long to generate a 1.0-T magnetic field at the cer0r*r 69lle qdz3yne -nter?

  How many turns should a 10-cm long so aen8cw gu(67xg:,tlx lenoid 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 r1xu q9b l1e73dblva,6bfl b- that carries 6.0 A if its diu llraf6 b 9bdb1b73,vx e-1lqmensions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform magnet r(zi0xbvn))pl xys7 x:w2, thic field of 0.30 T. The currentxz0,2irsx b)lthw(pvxy7n): in the loop is 2.0 A. What is the magnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sectional ark *ni 9;p ((zp;v kc w0e0npxu4-uhctwea $0.12 \; m^{2}$ 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 3.5 T. Timy8l zhtj: j )0;6psua0ncc)pppo 0 4he loop has a8t nppphzol)a6s: pu4 j)0cc0j ;ym0in 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 i4m u xzjg4e/.hn 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 ehzj gmu.4x4/ of the loop is parallel to the magnetic field?

  A circular loop of wire of radius 0.50 m is in a unifz2dqo4 . by(fform magnetic field of 0.30 T. The current in the loop is 2.0 A. What is the magnetqbd ozfy4f.( 2ic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loopl xco u6 o+j4bq/spig 37i,ka1 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, wuv1us/0 a:81g gmstf 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 velocity(+r7uwd7 jtk r $6.9 \times 10^6 \; m/s$ 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 ek/))94ikg-d 08osos zqvnbu and then moves into a magnetic field of 0.040 T. What is the radius of the pr)/)bikz09voueq- dsosnkg 4 8oton's resulting orbit?

  A proton is acceleratet ur:mt )e ldi9l:d-j-d from rest through 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Der):m9tjeiuld - :-tl dtermine the radius of the path it follows.

  A beam of electrons is accelelitq wzg(h+8hcw 1; )2u8e5faesnh. zrated through a potential difference of 10 kV before entering a velocity selector. If the B-field of the velocity selector has a value of 0.010 T, what value of the E-fi z)qec5 hwn8a;wsgh h1 fie+(l.t8zu2eld is required if the particles are to be undeflected?