If the north poles of twolx+pzfo9c ) zs i64-cq bar magnets are brought close to each other, the magnets woi zq 96cxzfsc-p+ )l4ill

  If the south pole of one bar magnet is brought near the nor7b r2fv/8 pjiwth pole of a second b wf7/p8b2rvij ar magnet, the two magnets will

  If a bar magnet is divided into twoumckqwprxu- ,2x)i2r) z 1wt.9y twh7 equal pieces,

  The Earth's geographic North Pole is magnel2.s 5w,; q t uf3fyoery, caw,2puxg-tically a

  The south pole of a magneilf(x4ew *0t1g 5ote et points toward the Earth's

  An electric current ok2ow,li* 3 qmproduces

  Which of the following is 1.7tea6fhrrs correct?

  A vertical wire carries a current straight down.ukwq d )ryu;wf -dz5wq.o/9r, To the east of this wire, the m,k/uqz.)f u 9-owrw;5 ydwq dragnetic field points

  A horizontal wire carries a current straight rty+ g:3/ b6xljo mg4xtoward you. From your point of view, the magnetic fiel gbl6mt +/ rogx3:4jyxd caused by this current

  A current carrying loop of wire lies flat on a table top. When viewed frog-c+2nhocdb* o1 y0u fm above, the current moves arounbc* h1f-no 2+ucg0y dod the loop in a counterclockwise sense. What 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 view2i.mjajjw2kbo2du 8/ ed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic obj2 i kwdaj2u8.mj2/ field caused by this current, inside the loop? The magnetic field

  The SI unit of magnetic field is th8k5bogcoh z3m- xq+p1e

  1 T is equivalent to6v*8 hpa imtn 95fgbt4

  The direction of the force on a current-carrying wire in a magnetic field ih0 o+vr8vtp2 ns described by which of the followipv o nv+0h8t2rng?

  The force on a current-carrying wire in a magnetic field is the stronggp7ug/vwt: pn 9n0nl6 est when

  The force on a current-carrying wire in a magnetic field is egdons b g5d vi,qu0)leb/bnb7* ,6y6qqual to zero when

  A vertical wire carries a current straight up in a region where the magnehvkdkgt2 rab;.4zj)5n b47sx tic field vector points due north. What is the direction of the resulting force on this 4tdab 2g;sh.4rjvx7n) kbz5kcurrent?

  A charged particle moves and experiencesgwnujq(t1x0 pj .3kb, no magnetic force. From this we can conu,jwjt0g1kbq3( x p.nclude that

  A charged particle moves with a coelp 184yf)a rznstant speed through a region where a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting14pyfz e8rla) on this particle will be maximum when the particle moves

  A charged particle moves across a constant magnetic field. The magnefzo8zf2ued6 0tic force on this pardoz80ff2z6 ueticle

  A charged particle is injected into a uniform magnetic field such that2flo47 b9vrk cpvg4:r its velocity42 vo clv:7grrpkb49f vector is perpendicular to the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in a circular pt84duiuv 8 4vqath in a uniform magnetic field. If the particle had been traveling twice as fast, tti4v4 u du8v8qhe radius of the circular path would be

  A particle carrying a charge of +e travels 3 v uvnbujlh1+ 63dxo;l w,jp; ,cbllvq*0xp9in a circular path in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of the d, l3q0 nl ppv63jowvu*b;1bhc+ u ;lvx l,9jxcircular path would have been

  At a particular instant, an electron moves ar x1bn:cyp34 eastward at speed V in a uniform magnetic field that is directed straight downward. The magnetic force that ac1y:anbc3r 4 pxts on it is

  An electron has an initial velocity :b dk+e u:t)kp7 +or(vlfhp4zto the south but is observed to curve upward as the result of a magnupkh p:)lk:be ft7+4o+ zv(dretic field. The direction of the magnetic field is

  An electron moving along the +x l)d0 rem0kcahc72.yoaxis enters a region where there is a uniform magnetic field in the +y direction. What is the direction of the magnetiyck)7 r2la.e codh00mc 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(wkbn:r9 8 7)jzf zrpt wire is

  At double the distanct4 x g qw,b+uba0yg*1ce from a long current-carrying wire, the strength of the magnetic field prodg*wb+xq t,b c1g4ua0y uced by that wire decreases to

  Two long parallel wires placed side-by-side on anl0: *r/2u0enc/s oca jmg n07x3tm ti horizontal table carry 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 betwe2cci0m /l otn730arxn m:st ne*0 u/jgen the two wires

  Two long parallel wires placed side-by-side on a horizontal table carry id dtgu+nzt 6 sw;*:t2x o* twskwxx:.r1entical current straight toward you. From your point of view, the magnetic field at the pointd6:s1;uwx2.*x* o n+wk wzgrttx stt: exactly between the two wires

  Two long parallel wires carry equal currents. The magnitude of the tt5cgp)1 l3i85akvioh h;l c6force between the wires is F. The current in each wire is now doubled. What is the magnitude of the new force be;oic3t vpk8lgi5 6h t15ahcl)tween the two wires?

  A long straight wire carries current towarceha + ig3-w f6t;a(hzd the east. A proton moves toward the east alongside and just south of the wire. What is the direction of the force on the pro+at 3(i ;ehwgc ah6zf-ton?

  A wire lying in the plane of the page a70opnuvu )hc/,) gnvhy4j+8z w og4o 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,jv,4+0uogvnoc4hgp) /7 zuy 8w a) hon from your right?

  Two long parallel wires are placed side-by-side on a horizoncvx0 jaas*6wm ),a o0ztal table. If the wires carry current in the same directionjxa mzv0 0so,a*wac )6,

  Two long parallel wires arjx *7 gk+8 x/nc.icnywe placed side-by-side on a horizontal table. If the wires carry current iiykc*+ nxgn. j7xcw8/n opposite directions,

  Consider two current-carrying circular loopsd4j1eqp7 uf7 i. Both are made from one strand of wire and both carry the same current, but one has twice the radius of the other. Compared to74 dqeuji7f p1 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 ni 5)zqf5,a.t v)kpv3z9vfyxqhl(/v circular loops. 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 magnpzy)l5nzi3v hqf q9v.f,5a)x kv(/vt etic moment of the smaller loop, the magnetic moment of the larger loop is

  The maximum torque on a current carrycn 9wh955l9jqno 0tal qvf):ting loop occurs when the angle between the loop's magn: 9)f05lqttqn95nlchw 9jaov etic moment and the magnetic field vector is

  When placed askew in a magnetic field, a current carrying loop k(x u8e4qol6;4djxztthat is free to rotate in any direction will experience a torque until its magnetic moment vect6ztxleju ox8(k ;4q4dor

  What fundamental fact underlies the operation of essenti /e, qr1s)efeoally all electric motors?e s,/eq) 1orfe

  A circular wire loop lies in a horizontal planr9 uoi,g4muf:) wbk 4nkr6 4tne on a table and carries current in a counterclockwise direction when viewed from above. At this point, th bnw6 ti4ru44fumknr: )ko, g9e 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 a particle of mass m anjrgv 8v*rc -ack 0ot9b fiz-56d 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 fierg590 v ivcbcz- t*6jkar8-ofld 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 co lyyb2esk pz52h*f:0harged particle passing through 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, disregfoy k25p2lyb*hezs 0:ard 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 p4p+5ctsvprp8 6dwoq-9o yk 3uniform magnetic p8cdsp t popk5-49vryo 3w+q6field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 An;yv ti(-ei7dgcc y.j 5)*phf 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 s n;7el0t1wwa4 ,lkeq*jqe bs:traight wire carrying 5.0 A when it is placed in a mabtw a; eq417 e0lsl* nkqe,wj:gnetic 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 sl ykoc-)l+ k5ih4e9c-)+l lnggf/jpof 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 can+5i4 nl o)j-sg9/k+c)f-chkleyg l l pcel the weight of the rod?

  A stationary proton is in a uniform magnefv8jo7ajf x,qj47,: kv mc3 kir- v:wetic field of 0.20 T. What is the magnitude of the magnetic forcm- x4jvk:qk,vfr7jc f o,:ivj 8wae37 e 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 jd om7o,(n m1lspeed 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 speezo6bg o qc;ls;q/ 18nw /l*wjtd 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 dup.ot (l fh ;j4rmy+(tie 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 wit zxj6.m39)tx5out, jjh h.zev h 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 a speed(4g p .noocoq0 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 speedwcr;m;f m4:wid a ep8- of $3.0 \times 10^6 \; m/s$ 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. ;/thm1u) qb8bci yz;hWhat is the magnitude of the magnetic field at a distance om ihbyc8 ;qh/;1zu)bt f 0.15 m from the wire?

  A high power line carryinvz0k,9 w(h7bdy u38kz:psidv g 1000 A generates what magnetic field at the ground, 10 m akhpdk0vy 3i8:u,9vzzw(s bd 7way?

  How much current must flow fo/vh 6vi0q xz,hu( h92t.qki vdr $1.0 \times 10^{-3} \; T$ 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 is the tn70l s e3b(ju2vi, inma jb2u 3nntiv(s,i l0e7gnitude of the magnetic field due to the 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 oppositth9pi)s g.*hve directions. They are separated by 40 cm. Whatighh t)v*s9 p. 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 cac wnf,0oo h8sy:ux,- 6gyso7i uix3l(rry currents of 20 A and 5.0 A in opposite directions. The wires are sepf( :wnux6s y,iio0,g8osyu- h7c oxl3 arated by 0.20 m. What is the magnetic field midway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposit8/(iguy ur v) omonb2ks 8xqd02u3vda,4 g3 eue directions. The wires are separated by 0.20 m. At what point between the two wires are the contributionsu nad8 uog)o 0gy,u dvbsr 84i3m2x/v q(23euk from the two wires the same?

  Four long parallel wires each carry 2.0 A in the same direction. qk32s+(eeyvdqp h z 8n4a;h)m 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 does one of the wires experience due tovymnsh+ a;ek4q2pq3e hz8d) ( the other wires?

  Two long parallel wires cuurq z31tp,yv.f6ke 9arry currents of 5.0 A and 8.0 A in the opposite direction. The wires are separated by 0.30 m. Find the 9 z vur p.yu,3tkq1fe6magnetic force per unit length between the two wires.

  What is the magnetic field at the center of a circular loor1 :qbff5 ydm3p of wire of radius 4.0 cm when a current of 2.0 A f:fyrq5 bf3 dm1lows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. What mag),i ealn 7m1ghl ;z-upnetic field is produced at the center of the solenoid when a current of 10 Al;zu, -1 phnamelg i)7 flows?

  A solenoid with 500 turns is 0.10 m lon qh7 2fttt65mmg and carries a current of 4.0 A. What strength of ma75 t2t6qh tfmmgnetic field will it have at its center?

  How much current must pass through a 400 turn coil)wr jg k5(e4l0/nwy xf 4.0 cm long to generate a 1.0-T magnetic field at the centk0r fywn5/4(wj) glxeer?

  How many turns should a a i b2v3efzfz5hne7;310-cm long 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 120 .o. /xgs-*l earmi:ls turns that carries 6.0 A if its dimensions are 4.0 cm xlo.ea/:-m* sir xs.gl 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic field of 0.30 gw wc6mun l)5almtq qx:/16s7 T. The current in the loop is 2.0 A. Wwm c/ aq1ns7)qtul mx6: wlg65hat is the magnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-secti, wqyv+f) ,hi8ij3 bnvonal 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 8xt0o) 2kktzruv+l(,mxvu yd62 t0l a3.5 T. The loop has an area ofxt l(uo0 x vd)8tv+6k ramt20z2yul,k $0.12 \; m^{2}$ 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 in a uniform magnetic *qsmizw7c 8 y*field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plaqs* cimz*y7 8wne of the loop is parallel to the magnetic field?

  A circular loop of wire of radius 0.50 m is vm: +5cy+xtfsin a uniform magnetic field of 0.30 T. The currens+ xvt+ m5cyf:t 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 6p0om5/r+xao xe be*v 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 particle (chargez6 4/pa:7 3ipmwaxfrw 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 vx9y(/trb cjx,w c/6u aelocity $6.9 \times 10^6 \; m/s$ 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 theni rnrg25cz ,v, moves into a magnetic field of 0.040 T. What is the radius of the p5r2 ncvir ,,zgroton's resulting orbit?

  A proton is accelerated from rest through 500 V. It enters a4ygq5v w3ybx m 3m)/p hl/ xziwg2)e.q magnetic field of 0.30lymq33 mvwi b pw2qze h) gyg.x/5)4x/ T oriented perpendicular to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated throuik,z5yt*v ) /2 3tjn z2.at d-qkahibugh 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 kt/hut25jyzqvkni i)t3 2da, b.a z-*value of the E-field is required if the particles are to be undeflected?