If the north poles of two bar magnets are brought close to each other, the mk ss/i8itm0s)agnets willit/)8sss mk 0i

  If the south pole of one tw w(ck6lb 8b2bar magnet is brought near the north pole of a second bar magnet, tkw(6b cw2lb 8the two magnets will

  If a bar magnet is dividen/3j/yrzhp-x d into two equal pieces,

  The Earth's geographic North Pol0ul.w uwo)kz6 e is magnetically a

  The south pole of a magnet poi-can, e.5ist wnts toward the Earth's

  An electric current producetp0ha *r )v5irs

  Which of the following is correct?r lip5,*14 tl* grjdhr

  A vertical wire carries a current straight down. To the east oqfdrjh)g ;() lf this wire, the magnetic fieldd j;h))r lqfg( points

  A horizontal wire carries a current straight toward u*m8jimrr *xfb*u8 s5 you. From your point of view, the mag* b*5mmsx*8ufrj8 ui rnetic field caused by this current

  A current carrying loop of wire lies flat ogvpu4eh+sy (r h-3z -,up0tjsn a table top. When viewed from above, the current moves around the loop in a counterclockwise sense. What is the directionug(0st j vpsy + u3r,-hp4-zhe of the magnetic field caused by this current, outside the loop? The magnetic field

  A current carrying ciaqyaq- cj f4u;5nyw7d 5k/w ao9bo7 1yrcular loop of wire lies flat on a table top. When viewed froma 7cdoa55w-4j y7by;1 /yqo wkn fq9ua 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 field

  The SI unit of magnetic36p;wwznjjo 8 field is the

  1 T is equivalent tof 7qig:efw*; d,n)dvk

  The direction of the force on uu/v)t 4 csny/lzx8 9ua current-carrying wire in a magnetic field is described by which of the folcutnyxuv /z 4u8/l) s9lowing?

  The force on a current-carrying wire in a madyda g7rl 3gq(p(0hr 3gnetic field is the strongest when

  The force on a current-carrying wire in a magnetic field is equal - p*v 7w;0aje7vwgj sx4czp6esl40 fyto zero when

  A vertical wire carries a3wfuk: )i9e*xqw( zjl current straight up in a region where the magnetic field vector points due north. What is the direction of thezefj3u(q lxi*w: w9k ) resulting force on this current?

  A charged particle moves and experiences no magnetic force. From this we ch/ (ri 3z lxosesadpz3m+l-): an conclude thol( pmrsd/3 h :-z 3+ezialx)sat

  A charged particle moves with a constant speed through a , k9 rb+kx7q q,qs+zvjknq; f;region where a uniform magnetic field is present. If the ,qkjnx fk+;q+7vb qz qk s;r,9magnetic field points straight upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a con5 ajr7) 7drebrqtlu: 7stant magnetic field. The magnetic force on this rb5rl7:)a7 q7te jurdparticle

  A charged particle is injected into a uniform magnetic fi j5pf2sdewna/ga:ob t:; g7- neld such that its velocity vector is perpendicular to the magnetic field vector. Ignoring gt7: wnap :/aeg5d 2ns j;ofb-the particle's weight, the particle will

  A charged particle io.-df;n alo9 vs observed traveling in a circular path in a uniform magnetic field. If the particle had been traveling twice as fast, the radius of the .d9;o-lonfv acircular path would be

  A particle carrying a charge of +e travels in a circular pwth5o1 ci y3zz n76dm0ath in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of ti0no715tmw zdyhc3z6 he circular path would have been

  At a particular instant, an electron moves eastward at speed V )u4u c rpa+9musle h2w4r,y( bin a uniform magnetic field that is directed straight downward.a+u )rhue (b, lpc924w4sm ury The magnetic force that acts on it is

  An electron has an initialw;u -(ubjztp2 velocity to the south but is observed to curve upward as the result of a magnetic field. The direction ouzw-;t2b pu j(f the magnetic field is

  An electron moving along the +x axis enters a region where there is4jolf/k55bjix0ob ,z.bxe 1oih9)ul a uniform magnetic field in the +y direction. What isl okb45.ub/)0bxi fiozoj 1l 5h e,9jx the direction of the magnetic force on the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced by a long straight current-carrying wiw4cozfp/r08 w2j lf7ure is

  At double the distance from a long current-c-sy; s+)wcmeou--3v0-h;zqge x vcnf arrying wire, the strength of the magnetic field pro0oxwmeq ;yc- 3)ucez+vf;hg- svsn --duced by that wire decreases to

  Two long parallel wires placed side-by-side on a horizontal table carrx qr i)eddq;-g2je-u 1y identical size currents in opposite 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 betwj xe)ddq1 2 grq-uei;-een the two wires

  Two long parallel wires placed side-by-side on a horizontal table carry q2y 9ji0fo3.c ,qx4tpgjfwc ,identical current stwq xcp ,go t2fi4fyj0q,9.c j3raight toward you. From your point of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnitude of the focz8tpk4 ;a/ sltl)g(hrce between the wires is (4aglzt)l c / shtkp;8F. 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 current toward the *tm7vxqwyd25 w 0exekfb, ;q9 east. A proton moves toward the east alongside and just ex9 7efqbv w 2*ty k5;0qmxdw,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 toj,mh ,fk 5zxn; 3 -zesd:ykq7gward the bottom of the page. What, k7xfdmh s- :,gk;z z3jeyqn5 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, from your right?

  Two long parallel wires are placed side-by-,ko+hglvotz(:k.uc: h) j u+vside on a horizontal table. If the wires carry current in the sh zuh,jovu)c+. k :(glt:k+ ovame direction,

  Two long parallel wires are placed side-by-side o,yemf gllu9 +fl u;w,j*j0*mon a horizontal table. If the wiresfgf*j meo*jl, y90luw ,+l;um carry current in opposite directions,

  Consider two current-carrying circular loops. Both are made from one strandw ji69qh1ak 5s 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 asqihj 6195wkof the smaller loop, the magnetic field at the center of the larger loop is

  Consider two current-carrying circular loops.k e1u5 (lfa-/ jakszb2 Both 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 moment of the smaller loop, the magnetic mome1f(j/-l52a ea zuskbk nt of the larger loop is

  The maximum torque on a current carrying loop occurs when the angqsd6ch)/+z j xle between the loop's magnetic moment and the magnetic fielh sjx+6cd qz)/d vector is

  When placed askew in a magnetic field, e53cj,pjon:d3 x7 ebmhpa b8.yr ls43a current carrying loop that is free to rotate in any direction will experienceme e5p 3acp3 ny:sh4j.l 3rdbbxj87o, a torque until its magnetic moment vector

  What fundamental fact underlies the operation of essentia xl.pls 21;ysxlly all electric motors.syxl 1;2x slp?

  A circular wire loop lies in a hori+d/nk8e 59n) qrh+m,o6ts xtu lmzv- rzontal 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 table because of the torque caused by the currentrukdm 8slo6 ,mvr95 /ztexq+ )+-t nnhs interaction with the magnetic field?

  In a mass spectrometer a particle of mass m and charge q v 3fkeupq51w -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 fivkupwf- 5 3eq1eld 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 througu qh -sq98qg/ch 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 magnitudes of the fields. In a velocity selector, the particles move toward the east, and the magnetic field is directed to the north. What directih /uq qs-9gqc8on should the electric field point?

  A 2.0-m wire carrying a current am:o );,gu fodof 0.60 A is oriented parallel to a uniform magnetic :g m,ufa);odo field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a direction8(m ;tuv.tgurak qfkze5 43c9dj. p5c 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 vs9hn)u3i-ihh 0nj 8fa straight wire carrying 5.0 A when it is placed in a magnetic field of 0.020 T? The wire nnfh)uh 8-v 3s i0ij9hmakes an angle of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long has a mass p6(vyh)aw5n eof 0.050 kg and is in a magnetic field of 0.10 T. What minimum current ()y5 vwpe6nhain 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 fiel //. zp:kp:w qxjhv)oyd of 0.20 T. What is the magnit::)pxowp /yz k .v/jhqude of 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 with vg99b zqjf:7 y0rv3h ha 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 of. 9p /qp-+ui-5o9smblip tka c $5.0 \times 10^7 \; m/s$ 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 s,q0zw ewr:c ;kf3 wgs/.3hqlvpeed $4.0 \times 10^5 \; m/s$ 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 withm .aw.( vkp1wu 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 magnetic force of the electron.

  An electron moves with af.dgx /fmzn p3ofr;s+ )8 pgf0k ;st,r 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 of b7zr; rln9d38n1yk(egq k sfg t*6+ zb$3.0 \times 10^6 \; m/s$ 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 25u. f0yxkel95ql) qy a* A. What is the magnitude of the magnetic field at a dist.xya5k9q q)*l euly0fance of 0.15 m from the wire?

  A high power line carrying 1000 A generates nx3 *t ;aesm3s,+ljyw what magnetic field at the ground, 10 m aw3j3* y, n ssmlwxt;a+eay?

  How much current must flow focy4 u(/)+r ogg8 dgn8dp(exigr $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a loncc,h66fq uwq (:hwu :zg straight wire carrying a current of 5.0 A is the magnitude of the magnetic field due to theu (q zqh 66w,cwhuf::c wire equal 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 oppositet7v 7f/yq: vce dks,n: directions. They are separated by 40 cm. What is the magnetic field in the plane of the wire7csfv q,td/n kv7:e y:s at a point that is 20 cm from one wire and 60 cm from the other?

  Two long parallel wires carry currentc 6 pxva/i/f 3zh/ra7hs of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the mar7 hvpa czi3h/x f6/a/gnetic field midway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A is92lds ,zzf2,.oqt hoa;) njqn opposite directions. The wires are separated by 0.20 m. At what point betq)qfj zho.sn2sz,d 2 ol,a;9 tween 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. They are paralllm 4s-dhn0(d mel 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 (0mnmh 4- ddlsmagnetic field does one of the wires experience due to the other wires?

  Two long parallel wires lw. hh,/ /+ 7;monvcwfk; dtvrcarry currents of 5.0 A and 8.0 A in the opposite direction. The wires are separated by 0.30 m. Find the magnetndkvl vww +7c.hhtrm/f o/,;;ic force per unit length between the two wires.

  What is the magnetic field at the center of a circular loop of wire of zt(,q5u/ut)yoxs ( ry radius 4.0 cm when a current(oq)uu tsr(yz, y/tx5 of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound l(m/+fg sgqsm t5j itk6lb76 0with 5000 turns of wire. What magnetic field is pr6(7kssj ltml56tb+mg 0g/i q foduced at the 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.j .g*)n:qldq (9hyy1 g kh:cd4jhrydt stren.kgdyl* (1 hr:qhyd 4:.d yhgj qc)n9jgth of magnetic field will it have at its center?

  How much current must pass throuv,lzco 6 ) -7c z(v3rqlocq:jigh a 400 turn coil 4.0 cm long to generate a 1.0-T7v 3 cjr:-lcz)6vi (ocqzolq, magnetic field at the center?

  How many turns should a 10-cm long solenoi 8v-mzg r 6c41kktgt:qd 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 6zztqa c.:a,8;t zmgo120 turns that carries 6.0 A if its dimension.mz tazzot;,gqc8a 6: s are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic faky2-cu4 ,nyc;ub8ut4t u)-cdwl(ik ield of 0.30 T. The current in the loop is 2.0 A. W nky l-uia)kbutwt( 4-dc,c;8 uc2uy4hat is the magnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cra lcw0uew 97d2,jst 4uoss-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 magnetic field of 3.5 Tbqn- 8)aft 6yl. The loonl -) 8t6qfbyap 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 b 73:ir5m apdlgz9z,x 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 parallel to the magnetic gdplziz3 xrmb97:a ,5field?

  A circular loop of wire of radius 0.50 m is in a uniform 6nlj a)ms7x 4lmagnetic field of 0.30 T. xan74 6ls)m ljThe 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 ar1kys ,u. p,rfiea $0.25 \; m^{2}$ 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 particle (charg/k q 0wwc;+n v(*pwmpme 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 ionn iuz/pu3js2: with 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 move9i: tx(xwm z w4ibc0wp2fx )9ds into a magnetic field of 0.040 T. What is the radius x:w mi09twx xi) b(f2w9d c4pzof the proton's resulting orbit?

  A proton is accelerated from rest through 500 V. It entersq,ua9i -ief.f a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Determine the radius of the path u ,9ifi.qfe-ait follows.

  A beam of electrons is ahrk: 6,hqt-zlawmw6 7c1jmg *jrr/;wccelerated 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-field is required ifr:-k/6 7 j1 lhq6a* hz;j,mcgw twwrmr the particles are to be undeflected?