If the north poles of two bar magneuy79sou bzuyt.wt0 )0 ts are brought close to each other, the magnets wiu t obz7u .s0t9)ywyu0ll

  If the south pole of one bar magnet is brought near the north pokxihwhg(./))v5nc3 kg y ee 9ale of a second bar magnet, the )nkkeih./9gey) 3xah 5w( c vgtwo magnets will

  If a bar magnet is divided in(*19rj x w y*dspuk.jcto two equal pieces,

  The Earth's geographic North Pole is magneti;7vot iq1)zjecv+) pk cally a

  The south pole of a magnet points p 2hz i-5jwpf,toward the Earth's

  An electric current producesa9 m1ab ujt5 -(;cxqjx

  Which of the following is correcto.cyoylt1wabq7 46 n ,?

  A vertical wire carries a current straight down. To the e3 -euu)8 jnja 23w0n aiplc)geast of this wire, the mai3caje)) nu 2ne0plw-ja3 8gugnetic field points

  A horizontal wire carries a current straight toward you. 6fe+,euyy., vge2+ )pk)ys9 mczzwnmzt;5 sh From your point of view, thn + . m+zhyw6z;y 9kvgetzsfp5m, 2,ycu)e)see magnetic field caused by this current

  A current carrying loop of wire lies flat on a table top. When viewed fra2fa+y* 7rm ubv, kv.mom above, the current movesy .vma ar,7vk*+2bfu m around 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 vi28j;;ca1g0akroq :fs0fls /z m)b hj rewed fro 8j;; )ms1q og:c rf/fsjal02ah0kbrzm 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 magnetic field is txy1ue xy-zqw 1bodr b:c03-/the

  1 T is equivalent to)5 s- ppg4s a06lcrzjq

  The direction of the foriw9j 2wgi1p8psq5pf; ce on a current-carrying wire in a magnetic field is described by which of thf2i j 5p;wwp 91ipsgq8e following?

  The force on a curre mm,i(m0+wudxxr1 u1qnt-carrying wire in a magnetic field is the strongest when

  The force on a current-carrying wire in a53 yin4p1 tx 5t7pkexjjwf35v magnetic field is equal to zero when

  A vertical wire carries a current v2mgjbd v) f8lo;-u 9istraight up in a region where the magnetic field vector points due norbiv )9 g8moud2jf v-l;th. What is the direction of the resulting force on this current?

  A charged particle moves ar.zepb2 8v:f dnd experiences no magnetic force. From this we can conclude t:vdbz8 .repf2hat

  A charged particle moves with a constant speed through a region whea). ih )azcoeq-/ nyv0re a uniform magnetic field is present. If the magnetic field n -)vi/zqy. 0 c)eaaohpoints straight upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constant magnetic field. The magnetic force rp ltb* 62uml/on this 6/urm2lp *ltb particle

  A charged particle is injected into a uniform magnetic f/t us eb.29vbjield such that its velocity vector is perpendicular to the magnetic field vector. Ignoring the particle e vj2u/sbtb9.'s weight, the particle will

  A charged particle is observed traveling in a circular path in a b6b7f up:un p vy7l1e//ogh7c uniform magnetic field. If the particle had 1gp7cenh7 /bvyb6upf:o/u 7lbeen traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e traveu6ptqrp ;;kb (ls in a circular path in a uniform magnetic field. k tbpq;(r6pu; If instead the particle carried a charge of +2e, the radius of the circular path would have been

  At a particular instant, an electro:cmn/f v3p1 otn moves eastward at speed V in a uniform magnetic field that is directed straight downwf/p 1:ovn3c mtard. The magnetic force that acts on it is

  An electron has an initial velocity to the south but is observed to c gcsn(k:d01/j h0qgscurve upward as the result of a0 sc( csknjdq:h/gg10 magnetic field. The direction of the magnetic field is

  An electron moving alg mvs(4+yf6eg ong the +x axis enters a region where there is a uniform magnetic field in the +y direction. gefy (64 g+svmWhat is 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-carjk7j. ud5p xf-* y6lk ;fryda1rying wire is

  At double the distance from a,0y:dq dis(v d long current-carrying wire, the strength of the magnetic fy(: ddsid0 vq,ield produced by that wire decreases to

  Two long parallel wires placed side-by-side on z ku 3wrk)bns 4u e)w,12dfr2la 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 bfs ),1lzd2rbuuk2e w4 k rw3n)etween the two wires

  Two long parallel wires placed xmsfyq be6 7 c-gva51-side-by-side on a horizontal table carry identicalg-y1mx6 7b-scqva 5fe current straight 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 magnitudqyihap. v,7f 9e of the force between the wires is F. The current in each wire is nv hfp,aiy q97.ow doubled. What is the magnitude of the new force between the two wires?

  A long straight wireh 1-rsxz c/opeyf /ogs/97 qvgr(;(w9n/h tud carries current toward the east. A proton moves toward the east alongside and just soutwx-euhg7 y/do/r/op(1vs (;qn99ghzt/sr c f h 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 toward the bo6f. puzds+z-3gkv ao9 ttom of the page. What is the direction of the magnetic force it prod6z z+gso.9kf va-dup3 uces 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 place8-6qo:a td. f8gctpz rwh4 v+id side-by-side on a horizontal table. If the wires carry current in 8 .gt vpoc6zhaid:-+4wq8rt f the same direction,

  Two long parallel wires are placed side-by-side on a horizontal table. If thej/en-t.+ ;3umtuq l hia)jx2p wires carry cnitu+a .h/lq)u jjme 2 t-3xp;urrent in opposite directions,

  Consider two current-cazynn4 oak5 k9b)es.y2k lw6. arrying 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 magnesa) 9 ly.2we4ka 6nonk5bk.yztic 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 u qr9ak+o)cip5pmrzj6)0 ; uoof wire and both carry the same current, but onu; rjc)i auoo 0k+mz9 r5ppq6)e 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 occurs when the angqfb cw,pnk(5/ueng9wfm0t k 91 6 (jkole between the l09( (fg9j e o/f,nuk1q56wk p tmwkcbnoop's magnetic moment and the magnetic field vector is

  When placed askew in a magnetic field, i pcdtg4s:kyesb2;e,brf , w .;6su(ca current carrying loop that is free to rotate in any direction will experience a tybkg.64c,;efs iep,; bs:( dstu rcw2orque until its magnetic moment vector

  What fundamental fact underlies the operation of essentially all electridw5b3n mor5k z++k+s ry a.5gmc motorsmagkdz 3 +o+5m5 yb5rkr +nw.s?

  A circular wire loop lies in a horizontal plane on a table and c:(3)q y -vpzdyhvvl.darries current in a coun3 .p)y:zhvylv-d (q dvterclockwise 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 currents interaction with the magnetic field?

  In a mass spectrometer a particle of mass m and chargexfs1/i. bsdp 1 q is accelerated through a potential difference V and allowed to enter a magnetic field B, f1 s/dbps 1ix.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 of B, q, V, and R.

  A velocity selector consists of a chargeb.dn:))lg)/bib xkr qd 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, disregard the magnitudes of the fields. In a velocity selector, the particles move toward the e.g)b k qdrixnb:b l)/)ast, 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 ry-i*t2 f65eo)l du4i8fkb ig a uniform magnetic field b*5u tifi8-)g6er 4f oiykl2 dof
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a dirwach739r n2- sipb bc.vep(io 84fp:tb7 : ewpection 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 metel:kh5tet- e, ar on a straight wire carrying 5.0 A when it is placed in a magnetic fielket,la:-ht5 e d 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 0.05c+1b/oh ((mag2xb8g lx5gqzt0 kg and is in a magnetic field of 0.10 T. What tb5+bqh lz(gx /oc( a12gmg8 xminimum 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 unifoakdsx63w,c; (qq rfs lz9e4g11nfju, rm magnetic field of 0.20 T. What is the magnitude of the magnetic forq ,9 r6lf; (zgand1 u,x3qwf 41ceksjsce 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 szf: cwl6 vonq99t2 y8kpeed 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 s1k+ j )-diotnqpeed 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 witf;,jh bm ee8+ (7r.vf0hgz xdth 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 sct607ve w ou ee.im40wpeed 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 spkj 6 7::p6syoxuoe(ir -73rhw.plrbhox1/ n g eed 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 3 ms,/hypr,l hqcb: qeyz,c62* qdv,r 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 nkp.:y .eg7thbb r52vwire carries a current of 25 A. What is the magnitude of t2e. vrytpgbh.kb 5: n7he magnetic field at a distance of 0.15 m from the wire?

  A high power line carrying 1000 A genera )cowe- bsw, l53fm)egtes what magnetic field at the ground, 1o,sfcl)b3m5w ee-wg) 0 m away?

  How much current musw ;3l +xkanc,at flow 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 q sl(wz ty/)xaskscr1h *bn u/6 13d8dcarrying a current of 5.0 A is the magnitude of the magnetic field due to the wire equa qnbw13d h dr*ykx(l6zus /8c1s/a)stl 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 opposite directions. Thfs, 5 wn5o v9dmx(i:tpey are separated by 40 cm. What is the magnetic field in the plane of the wires at a point that is 20 cm fnvt 5ms5(9poxd, wi :from one wire and 60 cm from the other?

  Two long parallel wires carry currentsixuj)0gzf+fo);m3 g 2eyo 0dr of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the magnetic field midway bet)g) 2u0fxogo3d ;zyi+0fmj reween the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in o33vm5keq ai*;hoh i 8vpposite directions. The wires are separated by 0.20 m. At what point between the two wires are mh5 q3iv8*3vka;hieothe contributions from the two wires the same?

  Four long parallel wires each carpgogpm -9*,0zw jx) slj oc68lry 2.0 A in the same direction. They are parallel to the z-axis, and they - go0lo,pw9gcs j* x m8z6j)plpass 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 wi 7,6lhxbmot r6lmf)*eres carry currents of 5.0 A and 8.0 A in the opposite direction. The wires arlot*rxb6 mfmh6)el, 7e separated by 0.30 m. Find the magnetic force per unit length between the two wires.

  What is the magnetic field at thc g3j( k: mey3vdrfl0;e center of a circular loop of wire of radius 4.0 cm when a cuf 3rgdc (;v3ylkmje: 0rrent of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. What m f4 bdw*xltx7zk 9,6 r ozmf5a:ch3nybm1,yv8 agnetic field is produced at the center of the yrcbmbt4f wy *7onx,:l985x,kz a 3hf6dm1 zvsolenoid 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. What+ggdi:(ic.ge + j ub:o strength of magnetic fib g:oggj+ idce+(:ui. eld will it have at its center?

  How much current must pass through a 400 turn coil 4.0 cm long to generate a 1.0c. y3dfs9s9j zhv )1lt-T magnetic field at the centel1td 9cs9)sfv3yhj z.r?

  How many turns shouldbz h+3oe i)kzd54y2w s a 10-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 momen,qp 0ee qr/4ext of a rectangular loop of 120 turns that carries 6.0 A if its dimensions arr,/ 4e eqqxep0e 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m ohpehaj: 6ucao5c ;-5 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 perpendicular to th5hha uoj :ocp5- e;a6ce magnetic field?

  A circular loop of wire of cr lab 4/y+yuldsnf7s 4gen8 k,:oss-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,tumlf9;wo,0nt( +eqyas *b,; sorwm A is in a magnetic field of 3.5 T. The loop h*fa ,tr q,lmo;ms9tw b;nou+(,sy w e0as 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 0.50 m is in a uniform magnetic fielaa /d0:r tk+pzd of 0.30 T. The current in the loop is 2.0 Akz+arpat 0/:d . What is the magnetic 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 uniform magnetic field of 0.387tu*)vt rpk 31ez ,vlybcf(x0 T. The current in the loop is 2.0 A. What is the magnetb8f 73cpt(lk veuzx,vr)t*1y ic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop of areaky adfeyj 9jv;v39axh1 /u9 d6 $0.25 \; m^{2}$ 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 m; yscji e* 6v(k93zc prlc8e*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 veqwr37 syj6.0mqy uu5elocity $6.9 \times 10^6 \; m/s$ 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 adx z:4s* bipk2 potential of 1.0 kV and then moves into a magnetic field of 0.040 T. What is the radius of the proton's resk:b4z *xdi2 psulting orbit?

  A proton is accelerated from rest through 50te:c z*g4aj*- e/l1 mra.otmd 0 V. It enters a magnetic field of 0.30 T orientt*c1-ormemazdga/4:j e.*lted perpendicular to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accqdwg ayw)17 1belerated through a potential difference of 10 kV before entering a velocity selector. If the B-field of 17b) qy1awdgwthe velocity selector has a value of 0.010 T, what value of the E-field is required if the particles are to be undeflected?