If the north poles of two bar magnets are brought clx+w8pin25 xl8g .kydiose to each other, the magnets wipx gnxik88+ . 5iydlw2ll

  If the south pole of one )lzb m(c 3mgs4bar magnet is brought near the north pole of a second bar magnetm )lm(bc34 szg, the two magnets will

  If a bar magnet is divided into two equaza zt0dvq4 f/d5fb*n; l pieces,

  The Earth's geographic North Pole -jj2cbn7end; ) n4-p4wlvot p8o+v prp*h0hkis magnetically a

  The south pole of a magnet p7v +isni3h,9ozcm (ij-cqu d+oints toward the Earth's

  An electric current zfx:5(b9d q zuproduces

  Which of the following is correct4 q6bjt ;kj3sq?

  A vertical wire carries a current straight down.y::hmxb+ xv-k hqx1 g. To the east of this wire, the magnetic field pointsmh xyv.hb:g-+ xq1: xk

  A horizontal wire carries a current*l0f. r a;ke.ojvub1u straight toward you. From your point of view, the ..l keav0ouu1r;f*jb magnetic field caused by this current

  A current carrying loop of wire lies flat on a table top. ,i.-an0u h nyp 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,phaiu .0 nny,- outside the loop? The magnetic field

  A current carrying circular loop of wire lies flat onf45 -fwl* vp*qckavrz1pd9.py9a bn7 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 ld*a4va5n-rzwc1b pf. 9v *9qp ky7f pcurrent, inside the loop? The magnetic field

  The SI unit of magnetinzcr/ +b(movt*z: s8 1+ iiivtc field is the

  1 T is equivalent to ,i 2td4)b*teknkr41xibgy:x

  The direction of the force on a current-carrying wire in a maw7sn3pr1(4o;*ohwl xvo ce 5 ygnetic field is described by which of the followvow513co 4nr*ewos(y p7hxl; ing?

  The force on a current-cd-7 pm7t-e sqvarrying wire in a magnetic field is the strongest when

  The force on a current-carrying wire in a magnetic field is equal to*c *lrrhtv ij 8)mv6-f zero when

  A vertical wire carrt. zuic1,nkoz xa6*:n ies a current straight up in a region where the magnetic field vector points due north. Wnu6x,z:1nt k*.o zi achat is the direction of the resulting force on this current?

  A charged particle moves and experiences no magnetic n:fndl z9c,g-: y/fbfvtv8 5nforce. From this we can co9yfln nzb, vf5 n:-/gf8:vt dcnclude that

  A charged particle mt3b(cxzuuhl. . gi2r )yfh9j/oves with a constant speed through a region where a uniform magnetic field is present. If th(3z 9y. hciu/.r2hulxjbf)g te magnetic field points straight upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constant ezo sxdw7*.k331*ww8ao ssxg magnetic field. The magnetic force on this particlew3g*1 w*oaez3x7 sowxsdsk8 .

  A charged particle is injected in3rf/z /jk3bx cto a uniform magnetic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring the c bjx/zf3k3/rparticle's weight, the particle will

  A charged particle is observed traveling in a ci5ru eez*;m.pzrcular path in a uniform magnetic field. If zu p*e.5rezm; the particle had been traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e travels in a circular pv lznu.,uh :f;lr*8ssbs, +xsath in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of xlsv,z.8fsl+: usur b;sn*h, the circular path would have been

  At a particular instant, an elkme3ieg(awjmvk4 8e2 -pk; s 4ectron moves eastward at speed V in a uniform magnetic field that is directed straigh8w4i42 v3sjee-ge( m mkak ;kpt downward. The magnetic force that acts on it is

  An electron has an initial velocity to the south but *),hmp rk9zkh is observed to curve upward as the result of a magnetic field. The direction of the magnetic kp hkm h)r*,9zfield is

  An electron moving along the +x axis enter+ij: f*,b niw1/txdxbtdxl-* s a region where there 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.jd,bi*l*t-b:i1fn+ x w/dx tx)

  The magnetic field produced by a long straight currenti44qlz- n-re p-carrying wire is

  At double the distance from a long curr6bn+dswm 0pt 4ent-carrying wire, the strength of the magnetic field mpt4w+ b0sn 6dproduced by that wire decreases to

  Two long parallel wires placed side-by-side on a horizbdgqqu2 +y xg8r3o 4u*e d3ax.ontal table carry identical size currents in opposite directions. The wire on youqx4 8ybodx +g grq3 3adu*2eu.r 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 okfjuj 8cwmg2s4r 7(*in a horizontal table carry identical current straight toward you. From your point of view, the magnetic field at the point exactly between thjj 8(rkisf2 4g mu*7wce two wires

  Two long parallel wires carry equal cuuc5 std/rz ) babrt0-,rrents. The magnitude of the force between the wires is F. The zr c tas0t)5bbr /,u-dcurrent 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 east.*g+ 2,uvyngr o A proton moves toward the east alongside and just south of the wire. What is the direction of the force ong,2g*rv +on yu the proton?

  A wire lying in the pla83gxly, p +uegkx6rlmr* ,c0a ne of the 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,gu*r0lmx6lpyg rea,+ 8k3 xc wire, also in the plane of the page, from your right?

  Two long parallel wires are placed side-by-side on a horizontal tabjp1pr7zl )a+mle. If the wires carry j+lpzp)7 m1 racurrent in the same direction,

  Two long parallel wiret7sp cjjv wy u0c72x:;s are placed side-by-side on a horizontal table. If the wires carrcx7pj: s j72ycw v0;tuy current in opposite directions,

  Consider two current-carrying circular loops. Both are made from one stzwa:*1rz wql)rand of wire and both carry the same current, but one has twice the radius of the w zl)a:w *1qrzother. 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 from one strand of4sr9 qq-jaj( 8n4lh- 6cyp nln wire and both carry the same current, but one has twice the radius of the other. Compared to the magnetic moment of p4(8hq6qjc -y nl nnr-sl49j athe smaller loop, the magnetic moment of the larger loop is

  The maximum torque on a c vkfle 2o/wb9c idwe5(h 3s-1q/-nly eurrent carrying loop occurs when the angle between the loop's w2siw q(5/dee3k -- yb9h/olfnvl1ec magnetic moment and the magnetic field vector is

  When placed askew in a magnetic field, a current carrying loop that is free to u-d7yi3a;2 y 0adeuch -dowo-h83k r ez1-nxurotate in any direction will experiend2x uu -r8k;a--h- wui3cy1370aodey h dzoence a torque until its magnetic moment vector

  What fundamental fact underlies the operation of essentially all electricon,oa8xu)sb7f87z dwk8 y4d z motors?78f8odosdyb xuk8 z) a, 7wnz4

  A circular wire loop lies in a horizontal plane on a t1y jwck r3mw*+0hw,sfable 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 yr ,fk1jw3ws*cm wh+0 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 ri cvbp9otios.b3h/n-:mz3 g8a gj1t0s o27i m and charge q is accelerated through a potential difference V and allowed to enter a magnetic field B, where it is i:3 tmpgrs3ojgth-/ac890i o2.biv1zbsn 7 odeflected 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 of B, q, V, and R.

  A velocity selector consi8cvy/x fujj) 3sts of a charged 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, dis x/j)uc3jyv8 fregard 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 cu+y93dd)( )zd gld6dpcqguqv 2 1t)qcmrrent of 0.60 A is oriented parallel to a uniform magnetyg qd)c23(mqq1d) u d+ 9z)lcdgtvpd6ic field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A i( gs* i6 s qr d3c*jbajilhuvr9q3:.0zn 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 straigeyl6o;jje(z 2 ;,vthwht wire carrying 5.0 A when it is placed in a magnetic field of 0 ,eh;t l;6y(ozj vjw2e.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 a magnetic field jkum)4xf 3bfl 5vz:;uof 0.10 T. What minimum current in the rod is needed in orderjul53f:x; vub fmz4)k for the magnetic force to cancel the weight of the rod?

  A stationary proton is in a uniform hb0 imj8r 02n6:o ccpkmagnetic field of 0.20 T. What is the magnitude of the magnetic force on the protokc2hjr0o6 npc:b0m8 in?

  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 speeumnk;d7( u0,fvdp1t pd 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 s4elqipe08 h/jd lx 5;0kf.t:zbab.expeed 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 slkpzvq0doxxi7 hn0.r59:s f,peed $4.0 \times 10^5 \; m/s$ 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 witqqpxr84 :p.y th 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 fchpo d*errzau24, :*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 ofe,n/ap+p/0ip , bfn;d.zlrc n $3.0 \times 10^6 \; m/s$ 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 iluhdtzx: m a45 z5g7-ms the magnitude of the magnetic fi5z7mmx uzhdal 5-4g:t eld at a distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magnetic field at the acer4) (bape1ground, 10 m awayb a (erp1a4e)c?

  How much current must flow for10 0h7ohmezkv $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long straight wire carrying a currob3 (c v qi0hl/ike+.hent of 5.0 A is the magnitude of the magnetic field due to the wire equal to the streov/b0. +i(cihekl3q hngth of the Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires ca9 q61- ,m ym/;b xmjhvgic5grnrry currents of 10 A in opposite directions. They are separated by 40 cm. What is the magnetic field in the plane of the wires at a point that is 20 cm from on6xmm19v/ ,-br imny;gc5qj ghe wire and 60 cm from the other?

  Two long parallel wires carry currereq z(w4al8j iwo-d0o wy.)d8nts of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the magnetic field midwayqd0z-owl (wod8rjyi . awe 8)4 between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A kccf.1u3, trp in opposite directions. fc1, u3trk c.pThe wires are separated by 0.20 m. At what point between the two wires are the contributions from the two wires the same?

  Four long parallel wirewpl 5t7kcvc35u jx +kmf0x0*is each carry 2.0 A in the same direction. They are parallel to the z-axis, and they pass through the corners of a scjx7c3*fl5kup0vw kx+ it0 m5quare 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 carr9:s/w 0 tfwlmyy currents of 5.0 A and 8.0 A in the opposite direction. The wires are separated by 0.30 m. Find the magnetic force per unit length between the two/f m: w9twsy0l wires.

  What is the magnetic field at the center of a circus; d 1z+ni3p qfcig0q8f,u)m ular loop of wire of radius 4.0 cm when a curu; 3ngp0z8i+u,1f)sfq qdc imrent of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound fa8r bu 53k,tmwith 5000 turns of wire. What magnetic field is patm k 83,bufr5roduced at the center of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns i s(77y8nsaj x./mqi tgs 0.10 m long and carries a current of 4.0 A. What strength of magnetic fie s8a7ymn/ (sq7t xig.jld will it have at its center?

  How much current must pass through a 400 tu63bqvw vd5i-es)4 f xcrn coil 4.0 cm long to generate a 1.0-T magnetic fie d36veb-wx i5v4f)cqs ld at the center?

  How many turns should a 10-cm long solenoidku js8 .v 2flooc7c3s+ 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 rectangular2rqvk7 o4s :gh loop of 120 turns that carries 6.0 A if its dimensions arg:s k oh74q2vre 4.0 cm x 8.0 cm?

  A circular loop of wire of radvs aki.a/ l4c/ius 0.50 m is in a uniform magnetic field of 0.30 T. The current icas/k/. a4il vn 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-;n.f+2 uedy njsectional 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 ofriyn t( znq18cde-89; u emxq+ 3.5 T. The loop has an area nen iqq d 1+;9x8myz(rc8ue-tof $0.12 \; m^{2}$ 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 radius6i : kzy6ibduui90v.c q01uqu 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 t6 duu9:izk6i0ubci.yq1u q0vhe magnetic field?

  A circular loop of wire of radius 0.50 m is in0,/qf jjwr6 ,dz (zgfe a uniform magnetic field of 0.30 T. The currenzdjwfr,j f ,z6/(qg 0et 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 area 9o(si, xmh-ds f;gf*z zrxc)yp/ q.c8 $0.25 \; m^{2}$ 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 (charge e) has a speed6mgws*( v)n;qbh auz. 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 ionw,mzsh f6 u9ct.8xf.f 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 th a:)wd :l3ltumen moves into a magnetic field of 0.040 T. Whatldua ml)3t:w : is the radius of the proton's resulting orbit?

  A proton is accelerated from rest thrioaz8 zhzi p2 -5e(u u2zld(4iough 500 V. It enters a magnetic field of 0.30 T oriented perpendiculapz (zud8l4z i- hao2(e5i2iz ur to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through1burjy( -:tdh a potential difference of 10 kV before entering a velocity selector. If the B-field of the t udj(yrh:1b-velocity selector has a value of 0.010 T, what value of the E-field is required if the particles are to be undeflected?