If the north poles of two bar magnets are brought close to each other, the7s: qsd :jtd:e magnets wil7s d ed:tj::qsl

  If the south pole of one bar magnet is brought near the north pole of a second bb x0e-,ot u kmzay*1y(ar magnet, the two mageb,y0(xokz* yu a m1t-nets will

  If a bar magnet is divided into trazt. 1dn q33cwo equal pieces,

  The Earth's geographic North Poxzkq2y zn(6i b8;/qdm t fm;v)le is magnetically a

  The south pole of a magnet points toward ;0l qh p9+hvxathe Earth's

  An electric current prt2j dxwzeblw5hz5)f.e w.vkkw hbzu 5 0(9 66moduces

  Which of the following is correcp477u6 nlp(gtri fns0 qdt y2,t?

  A vertical wire carries a current str3o8 pqtqkd+nx90j-y3lg ppc; aight down. To the east of this wire, the mag3x3p ojpqnk0p 9;qytc 8+dl-gnetic field points

  A horizontal wire carries a current straight toward you. From your point of wd19b( qhvch+ r2q.l i0sur d*view, the magnetic field caused by this curr rbdhidc r( 0q*u 9vs.qw2l+h1ent

  A current carrying loop of wire liesp k uq2g.q8fb* .xzg1 ugsmud;0qqr1) 2tqm-u flat 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 current, outside the loop? The magnetic fielf- q.0md srmq2guz)u;uq 82gx*g1 q.tp 1 buqkd

  A current carrying circular loop of wire 9 x,lu.g, qqeqf7s mln6fcr7) lies flat 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 curr7slcf 7r.xq gm 9ulqn6,q,) efent, inside the loop? The magnetic field

  The SI unit of magnexg ui q,3p.+uy0m9,suo ltu,xtic field is the

  1 T is equivalent tonp gz+g.6 /z8hnh +r qh3(lneu

  The direction of the force on a current-carrying wire in a ji h, x0)7;s9w 9rq9 sea h.eygrria(bmagnetic field is described by jiq7h9 hi09gex;se ay(9,rar)br .sw which of the following?

  The force on a current-carrying wire in a magnetio z(,g 2*v5hrih 4rvops d)i(ypm q30fc field is the strongest when

  The force on a current-carrying wire in a magnetic field is equal toiy9 sq g71fa+a zero when

  A vertical wire carries a current straight up in a region where the ma;yfu6su e/3lh:p.:mt 9ru ttognetic field vector sp 6ut3.rt 9:fl yh:u/;ometu points due north. What is the direction of the resulting force on this current?

  A charged particle moves and experiences no ma(5. uxf dn6cpggnetic force. From this we can conclu6fx(gdcnu. 5 pde that

  A charged particle moves with a constant speed through a region+ww )kq;qni*e where a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting )e w+n iq*;qwkon this particle will be maximum when the particle moves

  A charged particle moves across a constant magnetic field. Th ae7o:i5uod zg-vw598 r. vtwme magnetic force on this parwv-mi tg.ar:o58o7uev d 5w9zticle

  A charged particle is injected into a uniform magnetic fbjlqx 3tyso tfl298+3 ield such that its velocity vector is perpendicular 2f qslt3btyo3+xl j98 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 magbb ip tk jndux1v 1f+7j6p--7cqp d8b9l2k,jvnetic field. If the particle had been travelicj2fnd-+ 9 711l ,-vpq7db8tuv6jbjik kxpbp ng twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e travels in a circular path in a unifs j 5 )t1(7xmuzfmck15ai0* zo6mk pqmorm magnetic field. If instead the pfo cx7szi01*umz(j5 ) 5tkkm qam16mparticle carried a charge of +2e, the radius of the circular path would have been

  At a particular instant, an electrokbt0/bfu c- f:n moves eastward at speed V in a uniform magnetic field that is diru0f/- f t:bbkcected straight downward. The magnetic force that acts on it is

  An electron has an initial velocity to the south but is omcj ljf/2cr kqkh(w,5f,qrgd0 /,q4q :j6q ws bserved to curve upward as the result of / wjf(4,s6q rlcfc,0/qj:km 5 wkrdqq2jghq, a magnetic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a region where there is a unipq8sksm3b g* 4 9.zdxbform magnetic field in the +y direction. What is the9sks d8gpq.b3b x z4m* direction of the magnetic force on the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced +ih1lplz8vsj.u /x2r l.p p -x+(euegby a long straight current-carrying wire is

  At double the distance from a long current-carrying wire, the str43;u 7opl.tj a;ecxw zength of the magnetic field produced by that wire decptj3; 7zwac o4ux.e ;lreases to

  Two long parallel wires placed side- 9r.lcdt7hmefz 5 --p6oxqma5by-side on a horizontal table carry identical size currents in opposite directions. The wire on your right -lx6ac-tfp ed h5o7rm.9q5zm 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 tku o)cf:czb y hhe196w d7d/2eable carry identical current str1 c9dzuyehk od)7h6f:c2/ w ebaight toward you. From your point of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal currenrfl/v c5ip)-0l 6:f4miv g bhxts. 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 vi 6r g0ivfm /x-l4)f:cph5 lbbetween the two wires?

  A long straight wire carries current towar2.7bcjlm6eu,ns jb f ;d the east. A proton moves toward the east aloj s.7bluc6 b,m2jfne;ngside 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 carrik4+agz sr 4h.n1gcox.hvs-g ;es a current toward the bottom of the pags- k;r4z.ghv+ahg xn1o4 c.g se. 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, from your right?

  Two long parallel wires are placed side-by-side on a horizontal tapuh 2sdas(- h9ble. If the wires carry current is 9apsh(u2 -dhn the same direction,

  Two long parallel wires are placed side-by-side on a horizontal table.; +3nhqu rva31knfku.7vrg61 rm1cx b If the wires c+rf nvm71kbq ghv3 1xr6a; rc1un3.ukarry current in opposite directions,

  Consider two current-carrying circular loops. Both n+gnh:yrry-*f4 gfg k 92x8cu are made from one strand of wire and both carry the same current, but one has twice the radius of the other. Compar9ygy f2nhr8 fcgg r -4kxnu+*: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 made from one strank )2va9*w. w1k*miduu(4vsxezab. q6 z4zku i d of wire and both carry the same current, but one has twice the radius of thzevkuz6()4*sua4ibk km a9dx.iu w*v z12.qwe other. Compared to the magnetic moment of the smaller loop, the magnetic moment of the larger loop is

  The maximum torque on a current carryinrpo9 z6th.x91m 1y uu h;itkn4g loop occurs when the angle between the loop's magnetic moment and the magneti4pzhx1tkh u.6yo;1tm 9u9n ric field vector is

  When placed askew in a magnetic field, a) kw,2ov7jbzpxt0,ft 4adss( current carrying loop that is free to rotate btk, af x stpdw,s(jo740 vz2)in any direction will experience a torque until its magnetic moment vector

  What fundamental fact underlies the operation ofzq:s/u.kio r br.si85 essentially all electric motors:z8br ius 5o. sqk.ir/?

  A circular wire loop lies in a horizonw)e 2m)qxi ej(tal 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 them)i q)ewex(2j 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 a/ /c:+x5hvc fkfvnf9accelerated 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 in terms n:/a kxf/ fc9v+ 5fchvof B, q, V, and R.

  A velocity selector consists of a charged +y y; )uuh5 3umj;ocpa ;x-nuaparticle passing through crossed electric and;x ;c5ma h)uuo-yj3 +nu ypa;u 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 direction should the electric field point?

  A 2.0-m wire carrying a current zlejg , bu+rpuyq1s l.tnu t/ h2)m4;)of 0.60 A is oriented parallel to a uniform magnetic field oflnp)mjru 1tb. lyht4uzgq, e2s)/u;+
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A iu yr ha2-r(mic 61:lmyn 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 meteu : 0y 6qk*n*ifnhm2mfr on a straight wire carrying 5.0 A when it is placed i*26mknfn0ih :fm *u yqn a magnetic field of 0.020 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 c 3)t /g)k(uc9kkqs ooa magnetic field of 0.10 T. What minimko) k39 /sctouqk(g)cum current in 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 field of 0.20 T. What is thtd*v, bgxbre,an.; 6 me magnitude of the ma,n;rmte,x.g b vb* 6dagnetic 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 spezk fjt2b+xd 12yxq) i*ed 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 sxjj m*iri e 017uxhr7p.;so1gpeed 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 travelingnca 5qyh4+6 qk emq7dh0 .7grg due 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 sp bhes;ogz*.i3eed 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 : wa3l+c -y s5zswvno7speed 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 79f8g n -hli6qa0cw2wp s;hsp$3.0 \times 10^6 \; m/s$ 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 w *xzopd8::jgd7 rmq3sm 9fx) nire carries a current of 25 A. What is the magnitude of the magnetic field at 7d dj :*m)oq gpnxs38rx 9m:fza distance of 0.15 m from the wire?

  A high power line carrying 1000 A generatediirk/(ej9dv 3,8pshs what magnetic field at the ground, 1 vhk/irj8,93ide p(s d0 m away?

  How much current must flow ahj z5nqyt8h-m6wf -;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 cur-wv 62aodz4 a:x,1;kyfsq)) ee) mgq ibfs7mjrent of 5.0 A is the magnitude of the magnetic field due to the wire equal to the strength of the Earth's magnetic field of abo-g2adzkfmjvq fmb17s y w6 eq o,e)x4i);:s)aut $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carr 2 twrkq9 i(/f9 l(mv;q2brevyy currents of 10 A in opposite directions. They are separated by 40 cm. What is the magnetic field in the pv byi9qqw rkl ((t292vmf; r/elane 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 oppos5hcf w.joj*4ll8cin5ite directions. The wires are separated by 0.20 m. What is j *54h w.5lojilc cnf8the magnetic field midway between the two wires?

  Two long parallel wires carry currents of 20 A anncpnk68l:8 kzs.f( fto:uw:b shb4j (d 5.0 A in opposite directions. The wires are separated by 0.20 m. At what point between the two wires are the contributions from the two w4.b lh8tcnsfo 8fw: pzn6:(k sujbk(: ires the same?

  Four long parallel wires each carry 2.0 kkhw6t(kar90v:) d ue0 0g7oo uvq ar)A in the same direction. They are parallel to thor 6huew(70k r :0v)ad9vtg o)0qkukae 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 does one of the wires experience due to the other wires?

  Two long parallel wires carry currents of 5.0 A and 80:q fa78 hr+cyngjn8c.0 A in the opposite direction. The wires aqnh 8+ :78gjn0cyafcr re separated by 0.30 m. Find the magnetic force per unit length between the two wires.

  What is the magnetic field at the c)pvr (q-73rj.b epa ycenter of a circular loop of wire of radius 4.0 cm)rpy7 rqpeb v3.j-(ca when a current of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 tuj6 mtx uhlik)6,sx3(i rns of wire. What magnetic field is produ) s6xhimiut,3 6lk(xjced 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. Whatf:i+)w( tdyghce 6n0 b gf8w* xr8lp3m strength of magnetic field will it have at its c b06rc8gft:i(3 dle)+wn*w mgf8yp xhenter?

  How much current must pass through a 400 turn coil 4.0 cmc c1pr2b)f 1ja long to generate a 1.0-T magnetic field aac c)f2p11jb rt the center?

  How many turns should a 10-cm long solenoid have if it is to generate a )nthifdk fx41ffpo20.c3 c2d$1.5 \times 10^{-3} \; T$ magnetic field on 1.0 A of current?

  What is the magnetic moment of a rectan4,qqpl,yrc+l kqx 9 m(ot;xv*gular loop of 120 turns that carries 6.0 ckx tr,+( qqx py,m4 *l;l9vqoA if its dimensions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniforhtel zztpw+ j/zj8zz /p2:w97m magnetic field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the pla 2j8tz:+zhjt lpzzpw97 z//wene of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sectional area gawgyjsu v4* 226p x/q$0.12 \; m^{2}$ 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 fi/6aj8xl1lpv)rcn 2ek0)esr p9oc by3 eld of 3.5 T. The loop has xay pkc)r jlner )86s/el 9b23c1 op0van 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 v f wgr f./*z)5x0uhd5urwcfvq1 vv ;-is in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. What is the magnet;grw*0 f/ rv.fc )v5hw-vqz1du5 fxvuic torque when the plane of the loop is parallel to the magnetic field?

  A circular loop of wire of radius 0.50 m is in a unifoh3he0/4eoap g x mq 0 uu0w8:y5ti8stlrm 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 uaxthegi8/e:q0mo0l hy us4 3p0w 8t5ield?

  A circular wire loop of ae3dwlvj s4g0c pt/ 3f50kjn3u)hj )qt 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, a single-charged poj4)kjtn 3yv8article (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 velocity3i 3xa aut+n;o $6.9 \times 10^6 \; m/s$ 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 thenys+zoc c8 1:d j,4gdvj moves into a magnetic field of 0.040 81dcys+ z jc dov4,j:gT. What is the radius of the proton's resulting orbit?

  A proton is accelerated from rest through 500 V. c/h9e fn6f 786dbwqnq It enters a magnetic field of 0.30 T oriented perpendicular96 cqwnf q7/nf8 6dehb to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is acce26 vk7eaqscq ;gw6273k fwrn plerated through a potential difference of 10 kV before entering3wqf7 ecawvknrpqs 6 6k7g22; 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 the particles are to be undeflected?