If the north poles of two bar magnets are brought close to each o1 tj9m xy;yk-bther, the magnets wiymj-tbk9; x1y ll

  If the south pole of one bar magnet is brou,gs;m n w ,r)qq,nxzg+ght near the north pole of a second bar m +rsnq,zwxq, ),g;gnmagnet, the two magnets will

  If a bar magnet is divided into two equal pih*fjb pd*px;y kzc.06eces,

  The Earth's geographic North Pole is m+/ocpc agfq10oksmgskv8 :ay l-csg22 y+7r+agnetically a

  The south pole of a magnet pointr8sil aoc3;vxw5- k4ts toward the Earth's

  An electric current produ, gpr lb2q)txk2m +t9/ip)izfces

  Which of the followig6 e0 ;noay*bong is correct?

  A vertical wire carries a current straight qzs/ h09cx)re down. To the east of this wire, the magnetic field points/h)xecr qzs9 0

  A horizontal wire carries a current straight towi(5ww.ejx5gn9/zp ig7 jm z:kj/ 5qvn ard you. From your point of view, the magnetic izvimn kqjx5n5j5w9 (gjzg e:. / /7pwfield caused by this current

  A current carrying loop of wire lies flat ojcjy(aeh ;(rw,fge -w 90m )gwn a table top. When viewed from above, the current moves around the loop in a counterclockwise sense. Whatremhg0a(ygjw w,c) j( e w9f-; 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 on a table top. When w +;w*yobmy3s0ac 2yc 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 magnetic fieyy23ybca;c* m+ s 0owwld

  The SI unit of magnetic field is the:myhamf 9xn./mpbgl sg01o :0 zb( *ch

  1 T is equivalent tou w64anj 7s:fh +*wm0cd8xeek

  The direction of the force on a 9jsjwa08idw/ current-carrying wire in a magnetic field is described by which of the followi0wjwsj ad89i /ng?

  The force on a current-car-uulb *9 bhev89td* ftrying wire in a magnetic field is the strongest when

  The force on a current-carrying wire in a magnetic field is equal orrj6( wpxfp3tdy o ,kq;pi0jh38 (8sto zero when

  A vertical wire carries a current straight up in co- s:3x/ o ztoo6 ohy6gn+g/ta region where the magnetic field vector poiz:xotgg6o/otn o6csy+ o -/ h3nts due north. What is the direction of the resulting force on this current?

  A charged particle moves and experiences no magnetic force. From this wefdkv6ji+8 4 1wk/9wsbj8 gkfg can conclude th/jk+b kw89dsiwg16jk fg 4 v8fat

  A charged particle mordsjn1)xq * szf m*qzqu1*f/1wb+c,aves with a constant 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 be maximum when th,s 1cfj*bf/qx+ *wuz rmn1dzs) qa *q1e particle moves

  A charged particle moves across a constant magnetic field. T8j/x 3ik0 x2db3lozmbvg9)hi he magnetic force on this partix0zjm8g9k/hbboxi2 )li v3d 3cle

  A charged particle is injected into a uniform magnetic fm /saye 0.bnsy a9:ud0ield such that its velocity vector is perpm: u9na0ya.ysed0/b sendicular 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 o.wqcnso lwp+c86(7j magnetic field. If the particle had been traveling twice as fast, the radius of the circular path would bs 8l+ow7c qow6j(pc. ne

  A particle carrying a charge of +e travels in a circular path in a unifoxa9qi ms q c wf,b+y)f)ni9w2*rm magnetic field. If instead 9fi q*,wqmscx9+y f 2b))wnaithe 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 unix dx *t,gufe)0form magnetic field that is directed straight downward. The magnetic force that a) dxg* 0txf,eucts on it is

  An electron has an initial velocity to the south but is observed to curve lybgav ,p)ju2,6it0iu) 0k hnupward as the result of a magnetic field. The direction of the magnetic field is)ug02p 0h t6yvbu )ianl,j,ik

  An electron moving along the +x axis enters a region where thej;j hk4bu9sb)re 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 +z out of the page.)bhj k49)ujb; s

  The magnetic field produced;+ j9aixu9y pc by a long straight current-carrying wire is

  At double the distance from a long current-carrying wire, theqin5gou5 q+t7pjqni53k (v( f strength of the magnet3tk5 7gvn + oq jqu5(iq5fi(npic field produced by that wire decreases to

  Two long parallel wires placed side5 hoyeukfpq 73 n-y0z(-by-side on a horizontal table carry identical size currents in opposite directions. The yey5k-7qf(zhno0p 3u 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 horizontal table carry identic j 4fci x9bwy+j4sk81q3,apwo al current straight toward you. From your point of vieo 4c13yf p,iq84jwa x+wb s9kjw, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal g 66 el ;wvec1.6jfrebcurrents. 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 between the .evc6w6g6 r;1j f ebletwo wires?

  A long straight wire carries current toward the east. A proton moves tow -zz .5fh dw2b4v-q 2vrsemj8qard the east alongside and just south of the wire. What is the direction of the for .vrb2-fqh vdjqm- z5 s82we4zce on the proton?

  A wire lying in the plane of the page carries a current toward the boxccbdy0 hg6bn544 6amttom of the page. What is the direction of the magnetic force it produces on an electron that is moving perpd bb56nh ac0gmx6 4yc4endicularly toward the wire, also in the plane of the page, from your right?

  Two long parallel wires(eg1wwuyvw4t35d9 dg are placed side-by-side on a horizontal table. If the wired3wug w1(g9 yw e45vtds carry current in the same direction,

  Two long parallel wires are placed side-by-side on e5 atfqqw2) d 323lzcdazr; wrf06- osa horizontal table. If the wires carry current in opposite dis f2e;5z3 0-aow3ad ft)zq6 cwlrqd2rrections,

  Consider two current-carrying circular lool-ouxm, / abnkb,y,z, ps. Both are made from one strand of wire and both carry the same current, but one has twice the radius of the other. Compa nlb au,,bx,ykm zo/,-red 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 fs)6 7n do6bu:ay6ca ofrom one strand of wire and co 6 6su)6n7afbayo: dboth carry the same current, 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 current carrying loop occurs when the angle betwee7yjano ivx7w :vk;7+;bnuxrf,ex+ 2nn the loop's magnetic moment and the magneti+e2+i ,vjx7;ryw x7on:ukan; 7v xnbfc field vector is

  When placed askew in a magnetic field, aai)2n4vf y rz* current carrying loop that is free to rotate in any direction will experience i2f4 y*)zvra na torque until its magnetic moment vector

  What fundamental fact underlies the operation of essentially all electric motosdhejz*oyu ,yh4wdro :21.: plez0-frs?:o u,zw ylf z j4o*e0hd2e 1.ysrd:ph-

  A circular wire loop lies 5fqc w)+ tllz fp0(6xtin 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 horizontal. Which side of the coil tends to lift off of the table06 lc5x+wft( l ftz)qp 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 accelerated throea6s y;x0wf) ycb+k *mugh 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 parb)kmexyscfy60w+ * ;aticle. Derive an expression for the mass of the particle in terms of B, q, V, and R.

  A velocity selector consists of a charged w k7u7dbhj2x8particle passing through crossed electric and magnetic fields. The forces exerted by these fields are in h wx7bdju82k7opposite 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 0.60 A is oriented parallel to a k9z5bjd kcuxyi6;;5 9rb.fwd2 suwv 4 uniform magnetic fi wd.2rxuc654 jbk9;w 9b vyus;fizdk5eld of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 1 zm;e1l h7loz1m0-r)ay m)m mw0 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 straix:h:en7 kn3v sght wire carrying 5.0 A when it is placed in a magnetic fv n: k:snex73hield of 0.020 T? The wire makes an angle of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0x/u)poy4o lcq zvi +5; 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 )opy z54q cxu/ol;iv+weight of the rod?

  A stationary proton *qmae7 f rn5*e.mc7bd is in a uniform magnetic field of 0.20 T. What is the magnitude of the magneti mbmr.denf7*e7c* 5aq c 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 with a s-hu6 4e9kmf kvpeed 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 speb1 0v.x ,pl bb)ssb: 5trn3nvmed 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 with ( 08.hdz nbsx7-athr l1et1efspeed $4.0 \times 10^5 \; m/s$ 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 sp -b*qh162mcvbedqyc zra 1*5 need 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 spe vmal8*)yul1i l* nwr4ed 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 5 jb8,p tfot7lof $3.0 \times 10^6 \; m/s$ 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 magnitude ofzm)omi:na ar-x: zep7m)9 ov; the magnetic field at a-m:o :vzr 79m;om)azxn)ep ia distance of 0.15 m from the wire?

  A high power line carrying 1000 A generat(tmf+cyh8yy 8es what magnetic field at the ground, 10 m(ch +y8yfy 8mt away?

  How much current must n2.1 le;bd//uuvoavb 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 carrying a current of 5.0 A 7;l07ubc iq)3sk0qkwu s1j-p h ya+mlis the magnitude of the magnetic field due to the wire equal to the strength of the Earth's magnetic field ouysal0h1kl+7i0qs;k) wq-j 3 m pub7 cf about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry current vay17hp15x7dz n6p*eaxk/wes of 10 A in opposite directions. They are separated by 40 cm. n e/7vay1xaxe 7p dwzk h*p615What 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 wires carry currents of 5 b9y8ojwsm6l 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the magnetic fiem os w9y65bj8lld midway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite direct..eyok4n m,(fyvfyi7ions. The wires are separated by 0.20 y,i4.fymeovyfk7. (nm. At what point between the two wires are the contributions from the two wires the same?

  Four long parallel wires each carry 2.0 A in the same direction. They2(p pv5aad 6sm7bug7kwxz3e1yp -s6s are parallel to the z-a7 dapym6wusssbp-ex(65kv z7 3a21g p xis, 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 due to the other wires?

  Two long parallel wires carry currentc8g ugx503l rrs of 5.0 A and 8.0 A in the opposite direction. The wires are separated by 0.30 m. Find the magnetic for r rx3ul8c5gg0ce per unit length between the two wires.

  What is the magnetic field at the cent ,zt odf (q lo9;i3ufi0emy9zw/iw, ,oer of a circular loop of wire of radius 4.0 cm when a current of 2.0 A flows in the wiu3yo(9i wd; q/,tf0z,om feo,wil z 9ire?

  A solenoid 20 cm long is w - -yx4zq5ldk8l -ux pzuhoo35w7 8jinound with 5000 turns of wire. What magnetic field is produced at the center of the solenoid when a current of j-qopx48 l 7 unyd il -ohz38-5u5xwzk10 A flows?

  A solenoid with 500 turns is 0.10 m long and carries a current of 4.0 A. Whaqx.a2 xl+;ma at strength of magnetic field wila2m qxla.+a x;l it have at its center?

  How much current must pass through a 400 turn coil 4.0 cm long to generate a 1.0 2b )uvc v)xjcx vpc4e(hs72f7-T magnetic field at the 7 27fjp)cxu( x2v ehcvcv) s4bcenter?

  How many turns should a 10-cm long51kk4-3m rd:*9yvpmvf zgvue 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 12c r n gqg3*a88(0 -xz6jiyxaor*2ws fb0 turns that carries 6.0 A if its dimensions are2fgaq 3oz wcx yj8aig (n*8rrsx6 *b-0 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic fi )ced2xuj6cg1 eld of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plae1)cgcj 6 ux2dne of the loop is perpendicular to the magnetic field?

  A circular loop of wire zgf5 5z tu d25n0b/*j2deceisof 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 curren 39cbwxx3y n o9(ds b2mw/tu0wt of 2.0 A is in a magnetic field of 3.5 T. The loop has an a3b dyts93mbx2(uw w0n cx/o9wrea 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;lpn u5kvs9( f 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 parallel to the magnetic fp9ku5vlsn ( ;field?

  A circular loop of wire of radius 0.50 m is in a uniform makm z 5jx:cn4j6nejpcn4zbh-5. nz90ggnetic 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 fiel546npn xk4jcz jmbc9e ng .5-zjh0n:z d?

  A circular wire loop of area -dwc *ktoqv,wa2sj ; ;$0.25 \; m^{2}$ 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 pv9;u4 7 )lox7ran ixdharticle (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 vet x,ute 55o0kblocity $6.9 \times 10^6 \; m/s$ 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 of5pz: *vju 4pwk6jit /k 1.0 kV and then moves into a magnetic field of 0.040 T. ptiuvjj k*5 w6p:4z/kWhat is the radius of the proton's resulting orbit?

  A proton is accelerated from rest through 500 V. It enters a magnetic field of pu+f5(8uid pu+ 0tol(vqblc 80.30 T oriented perpendicular to its direcpq luuilb8 o0 +uv(fp8t c(d+5tion of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potential differez/p2qu c qz(0hy*/ 6aqljn 2eence 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-field is required if thn e/huzqpy0*2j /caq6( zelq2e particles are to be undeflected?