If the north poles of two bar magnn kpm 9o;.0vt7lge0j;-cmzos ets are brought close to each other, the magnetstnz;eo0 ;cj0osm gkm. 79vl-p will

  If the south pole of one bar magnet is brs c+3ag*gwwj .ought near the north pole of a second bar magnet, the two mc ag* +sgw.wj3agnets will

  If a bar magnet is divided into pe 51o5gva 2l e mw((9pimrsv7two equal pieces,

  The Earth's geographic North * 6pj m2wgt0rfPole is magnetically a

  The south pole of a magnet points toward adt3nvw livk2bok;, ::ps03f the Earth's

  An electric current ptz 0fn5;w 3mkproduces

  Which of the following is i.wezhjr/1yvbb .d9 /correct?

  A vertical wire carries a curren4p3)n:rbieknb k )e m9t straight down. To the east of this wire, the mag:bi9)mnk)b4pe3r nke netic field points

  A horizontal wire carries a current straight toward you. From your6l kccb-- e8ho point of view, the magnetic field caus-cl- o68ekhcbed by this current

  A current carrying loop of wire lies flat on a table top. When viewed from abov sku063 czs)feo4 x(jve, the current moves arj0() sco kzus6e43xfvound 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 wi f5/ :o /cter)rner)ayre 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 o:eter/y5far/) )r c nmagnetic field caused by this current, inside the loop? The magnetic field

  The SI unit of magneticjlg3y+ do0/zr iyk b/4)ej(e-zs9 mkb field is the

  1 T is equivalent to3xcz,biznf l8x 9 g.hsuy*3.d

  The direction of the force on k0m pn0obm3.jf ws7/ xa current-carrying wire in a magnetic field is described s0 0./kw3mnofjbp 7 mxby which of the following?

  The force on a current-carrying wire in a magnetic field is the strongest whb7.)ivee46sdlpndj +: ouu9 i en

  The force on a current-carrying wire c pw7 buo yik:34+5akcin a magnetic field is equal to zero when

  A vertical wire carries a current straight up in a region where theiu bou/ou6 7b5c;8 gfr magnetic field vector points due north ;8/oubcru 7u5fig6b o. What is the direction of the resulting force on this current?

  A charged particle moves and experiences no magnetm7 ka43y7la+g eetp+vic force. From this we can conc4 pm +vegtaayk7l37e+ lude that

  A charged particle moves with a constant speed through a region where a vu;x;bi)v id; uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting on this particldi bv;)u;x;ive will be maximum when the particle moves

  A charged particle moves across a constant magnetic field. T d k (u+kgu7u,8jr9oxthe magnetic force on thio, x u9ukr+8u(ktg7 djs particle

  A charged particle is injected into a uniform mjojec.d. 1:zeagnetic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring j. .:j1e zcedothe particle's weight, the particle will

  A charged particle is observed trv cu4od:d4q5uejt,pxjn i nzyj*3 2 :3aveling in a circular path in a uniform magnetic field. If the particle had beenn d:jz pj*3 i 5ove23jty4ucd:4,uxqn traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of +z h-zakz pi53 y u7c9iv.0r(uge travels in a circular path in a uniform magnetic field. If instead the particle carried a charge of +2e,- .pic u9 z3k7vu h5a(zyz0rgi the radius of the circular path would have been

  At a particular instant, an electron moves eastward 6qydlep to5 ):e6v j/pat speed V in a uniform magnetic field that is directed straight downd /:pyep evtl6o)jq65 ward. The magnetic force that acts on it is

  An electron has an initial velocity to the south but is observed to/3xhrh 0jw4my curve upward as the result of a magnetic field. The direction3hjy04 wrmhx / of the magnetic field is

  An electron moving along the +s1c6wol/p3qul7og5nq 3 di n )x axis enters a region where there is a uniform magnetic field in the +y direction. What is the direction of the magnetic force on the eo3qglwdoi7 clp5n6/u qs 3)n 1lectron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced by a long straight cu*lhzo zm j78t,jm .v8a;ctws.rrent-carrying wire is

  At double the distance from a long current-carrying wire, the strength of the masn5.vaxlci 2 4gnetic field produced by tha. aisncvx25 l4t wire decreases to

  Two long parallel wires placed side-by-side on a horizontal ta x* *pxe8t)ao;f z1jeol1 6insble carry identical size currents in opposite directions. The wire on your right carries current toward you, and the wire on your lo1x pz1t )eoansj eli6x8**f ;eft 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 identibt8u4 xvz axf0 *gh,s,cal current straia 0z 4u,g sf8x*,vhxtbght 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 thnn 13r2l..vnu l :vvyye force between thu lvvny31n2y:r.n.l v e wires is F. 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 east. y(p n(pk *qfndf2e-9v A proton moves toward the east alongside and just south of the wire. qkyp-(fvp *ed(9n2 nf What is the direction of the force on the proton?

  A wire lying in the plane of the page carries a current towaury 25,n*j9q60yypu n-qh b;a*hb vkird the bottom of the page. What is the direction of the magnetic force it produces on an electron that is moving p2y hai 0qryb6,qu yvj-5 *b9un* hn;kperpendicularly 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 table 6rh+0ziu* )i:n ss5mjsc4ie+mwdh 1 i. If the wires carry current in the same direction,ih w05e+z* s+:14ijmmr6 inss uc dhi)

  Two long parallel wires are placed side-by-side on a horizontamdh63tchs15f. ymql ;i1ew6u l table. If the wires carry current in opposite directions,d6 l56hum. ; w1ys3ihtqc1fme

  Consider two current-carrying circular loops. Both arrjttm a,-4l3b o)1pa0i7otqb rn6 qr 7e made from one strand of wire and both carry tbtl 0jri6a7-r,obt1q7n p t qr) 4m3oahe same current, but one has twice the radius of the other. 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. ,;s/pwqv mya66v9hs3ooju5b Both are made from one strand of wire and both carry the same cuyu vmwo5o9p,;jhss3/ bq6va6 rrent, 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 o8mgvvbzn+:df dj56 y ..lie/lz *x.eo ccurs when the angle between the loop's ma dxvmde/j*vzgb5f+6ly.8o e: .. znil gnetic moment and the magnetic field vector is

  When placed askew in /czmw,abg;v,/4nyj9 :5nsf k9 u vnvm a magnetic field, a current carrying loop that is free to rotate in any direction will exper,vns f,muyb9jkgvm9vn;z w/ :an/c45 ience a torque until its magnetic moment vector

  What fundamental fact underlies the operation of essentially al9y, /oheyqc79;(vc, hd plhme l electric motors?ceov,9hq /p9hy,d;7l he y(cm

  A circular wire loop lies in a horizontal plane on a table an.; pddqsq(dxzs6:1 god 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 horizo:1qpq;gdo sd( xdzs6.ntal. 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 and charge q is accelerated throughd8: eh :-gqx. qj7jrwk 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 qk .-w :hgxd8j:j r7qeoriented 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 through p7az0 yc:/rlg qac,z8 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 dazpz,c 0lg:/ac7 r yq8irection should the electric field point?

  A 2.0-m wire carrying a current of 0.60 A is oriented parallel to a uniform magnxp1gq4ukzr)xx x- csp+ h-1f6etic fg -u 1h kx)+xzppxxrq4-16scfield of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a directiop.i( sqwc3 .k/.h tgokn 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 straigh4a8)mk ry6l rxt wire carrying 5.0 A when it is placed in a magnetic field of8kra xlm6 r4y) 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 iauo:/xy 8oik8s in a magnetic field of 0.10 T. What minimum current in the rod is needed in order for the magnetic for 8a o8xu/yoki:ce to cancel the weight of the rod?

  A stationary proton is in a uniform magnetic field of 0.20 T. What is the magn da 3 ygsp *px)owu+77v2mc)as9x:oxc itude o :m*) 3+ovsx) 7cxo2ag7 cwpua9dy psxf 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 a si)wze0 o d:4v v(xs1tqo.-jrrzkbg9 *peed 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 ofvp9)eg/(gbca $5.0 \times 10^7 \; m/s$ 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 speed qzs-you 7( x36u)b hqu$4.0 \times 10^5 \; m/s$ 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 with8hg9orsqtt* 6ycie3 14r kk- v 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 sr5a 1nhr+7hrstb(tx cb:wn 64 d;et a;peed 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 oz1q n,;ztn )lc3 fs.nxf $3.0 \times 10^6 \; m/s$ 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 t9yhln+x v71uz)m4lu1-l ub ok he magnitude of the magnetic fieldlynzm7u )oku4bl 1vh-x l +91u at a distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magi.wg4k.gm/6j4ejpg e h ga*g,netic field at the ground, 10 m amheeggw.pk * ai4ggj.jg /64,way?

  How much current must flow for 9a*cqczqe c 2 bca.4;ewx6un,$1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a loc3/oli;rbm9+xkk . khng straight wire carrying a current of 5.0 A is the magnitude of the magnetic field due to the wire equal to the stren9bxih+/3 o.ckmlk; kr gth of the Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents of 10 A in oppos1,e4yy n1bfzi)i 1y baite directions. They are separated by 40 cm. What is the magnetic field in the plane of the wirfniba,e 4y1 1z)by1yi es 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 an,oud y3087 9ryuxt dtyd 5.0 A in opposite directions. T 8,tyru3d907tuyx oyd he wires are separated 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 opposite directionh6:zasm8-o9 ,5/ wkignquwqw s. The wires are separated by 0.20 m. At what point between the two wisk6n5q ,g/wq w9 awm8iuh: -zores are the contributions from the two wires the same?

  Four long parallel wires each carry 2.0 A in the same direction. They arj2 wx ;.dv0br:sjhg3: f8ruce e 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 to t3xwjrd j.:b0 u2:cvs e8r;gfhhe other wires?

  Two long parallel wires carry currents of 5.0 A and 8.0 A in the oppos,-v 3vbhy 2ehh4xu zyb4ijfg:r / p 3/y+i7mohite direction. The wires are separated byo xhj bpi+4,yhvmy ehvi 743yru/fgh-/z23b : 0.30 m. Find the magnetic force per unit length between the two wires.

  What is the magnetic field at the center of a circular loop of w:ec(ex0c,b75yfa h3 jie /edlire of radius 4.0 cm when a current of 2.0 A flow/ex(,jhbee 0y:5c7daef c3l i s in the wire?

  A solenoid 20 cm long is wound wit,g8php6 i ,/uus:y msyh 5000 turns of wire. What magnetic field is produced at the centep/:usuh y 6mp gsy8,,ir of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m lonzha4z(rs2 :js+ e(v dig and carries a current of 4.0 A. What strength of magnetic field will it have at its center?svha: z(j2ds+(er iz4

  How much current must pass thr7m-4xwkfr+ ,og shkz u-v5r-hough a 400 turn coil 4.0 cm long to generate a 1.0-T magnetic fieuok47 z,mvh- w -xhkgr-+fs5rld at the center?

  How many turns should a 10-cm long solenoid have if it is2f jon(u 1fm9h+aag i. to generate a $1.5 \times 10^{-3} \; T$ magnetic field on 1.0 A of current?

  What is the magnetic moment oj 5, v(3avx0hg caa,uz,ykd6xgu9 3rh f a rectangular loop of 120 turns that carries 6.0 A if its dimens,j9 vx3ak5, c,ghhvd6z( uuar0 yx3a gions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic ficv3(dp 3n yz-s;l yx*xeld of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torp3(- c znyvdx3* ;lsxyque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sectional areloj/nrg/cmi n9tnq d f,w07 8/a $0.12 \; m^{2}$ 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 T.j r 5t 4)pev.jh9e8ebo The loop has an arej .o9e htpberj48ve5) a 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 wi kla0is11a,1f1:*yzrp inu fyre of radius 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 ay11sualr:z1 f,ini* 1fy p0k of the loop is parallel to the magnetic field?

  A circular loop of wire of radius 0.50 m is in a uniform ma(lomjm9q - v;b(bg la9gnetic field of 0.30 T. The current l -lo v gbq;j9a(mm9(bin 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 areanig-9ayue 243 yjx *juf .-dii $0.25 \; m^{2}$ 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 spekufjkqakk;71wz+camfh 9+.rm ky:sdz* 6 s4 7ed 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 vjeys/ +)ajkh+ elocity $6.9 \times 10^6 \; m/s$ 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 moves into ai21 o5e p/t1dknm p6yd magnetic field of 0.040 T. What is the radius of the proto6yd 1e tink5p12/odpm n's resulting orbit?

  A proton is accelerated from rest through 500 V. It enters a magnetick2xrfeum:nddy +op*w s7,3 t2 field of 0.30 T oriented perpendicular to its direction of motion. Determine the rad k +p o*ru2w,7exddsmtn:23y fius of the path it follows.

  A beam of electrons is accelerated through a potential difference of 10 kVwbekgn :,.k138 :m+pdng/nr su7*yx v:z mwde 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 the particles are to be undeflecyrs z:8d m ue, w1/k:.3+xnngn: p7*gevbmdkwted?