If the north poles of two bar magnets aw*73ypq1*p d 6/egwt lkne+wisku* 9nre brought close to each other, the magnetsg wy e*lnp*kq+ ntdp6kw37 e1*wsui9 / will

  If the south pole of one bar magnet is brought near the north pole of a secondndj+nh/0k cw( bar magnet, t c nw+ndh(k0/jhe two magnets will

  If a bar magnet is divideu. ukd.ydl /n:2*djdr d into two equal pieces,

  The Earth's geographic North Pole is magnetically 4 -0dq,gwxjita

  The south pole of a magnet points tolxk :zx 9xwi 2k/p fs3wam.33vward the Earth's

  An electric current przrf3 e5 vbr-)woduces

  Which of the following is correctbj6qljz.do ,x )/u) rl?

  A vertical wire carries a current straight down. To the east of this wir u7-q3j 7p0hgo4udeyep (d2wbe, the mage2o e0hjg4b7udupy w d-(37pqnetic field points

  A horizontal wire carries a current straight toward you. From your 8 ea 3kvuzhw nz10n*+owr7y:jpoint of view, the magnetic field v r1z h3uw8 y +7*:za0jewoknncaused by this current

  A current carrying loo;uuqop uh; :)fp of wire 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 t :;oqhuufp)u ;he magnetic field caused by this current, outside the loop? The magnetic field

  A current carrying circular loop of wire lies flat on a table pk wk;gb*e )z6top. When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic fieldb)p6*kk; zegw caused by this current, inside the loop? The magnetic field

  The SI unit of magnetic field is tti0 jg(6 fkhsnff8gh7 -9d lm(wms*xp:t7 e)hhe

  1 T is equivalent todm(cwi x7t: u cl+tz1v;9q u*x

  The direction of the force on a current-carrying wire in a magnjki:( svz.gmdp7 mg/4etic field is described by which of the followiz/mi:. g( smv4gpdk j7ng?

  The force on a currentjzaiwt nw:j /q*(. ad--carrying wire in a magnetic field is the strongest when

  The force on a current-carrying wire in a magnetic field tjv97f-yq 6rdsg;je, is equal to zero when

  A vertical wire carries a curren-9rg0ym dg :nyt straight up in a region where the magnetic field vector points due north. What is the direction of the resulting force on th9g-0 yd:n ymgris current?

  A charged particle moves and experiences us)lq ya,m31ztm(uj3tl9g of+av 3d 6no magnetic force. From this we can conc)63vfag,tl+am 1zuy qto3ld m(s9u3 jlude that

  A charged particle moves with a constant speed through a regi( m qoerb)w5j;on where a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting on this particle will be maximum(jbre mwq5; o) when the particle moves

  A charged particle moves across a constant magneey; ws6*nrej6tic field. The magnetic force on6ej*sr;yn w6 e this particle

  A charged particle is injected into a uniform magnetic field such that rl ks;u 5iecsltyyd))j4 .v71 its velocity vector is perpendicular to the magnetic field vector. Ignoring the particle's s4y);yklt rl vdj.1cu5es )7 iweight, the particle will

  A charged particle is observed traveling in a circular path in a uniform mag k-cmk4gvld2- netic field. If the particle had been traveling twice as fast, k--c4dg ml kv2the radius of the circular path would be

  A particle carrying a ckh cj4.i 5rz/0dc2 jfoharge of +e travels in a circular path in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of the circular path would have be.c/ hf2 cji0 rj4o5dzken

  At a particular instant, an electron moves eastward at speed V in i64ip(0zhup+cd9.t 5nfts pwa uniform magnetic field that is directed straight downward. The magnetuws+tpi 5(z. inftph96d 40cp ic force that acts on it is

  An electron has an initial velocity to the south but 8miufen n+tc; g66f -)n*. euwnsd,/ biu6upz is observed to curve upward as the result of a magne6ebdu )6e pw+/ ii6;n. ,cmsu-zg * fnu8unfnttic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a region where there f,fowra+1s sv)p;she01c wx ewx-.b/is a uniform magnetic field in the +y direction. What is txcrw 1),+w; sfsf/s he1eoa .-xwb0vphe 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-carrym6*phiox:zw k7jvg( 6c0:iiying wire is

  At double the distance from a -np9:b9 ;uuvb vn-tij long current-carrying wire, the strength of the magnetic field produced by that :tpu- vj99uibnn-v b;wire decreases to

  Two long parallel wires placed5a4 au 3jnnr-n side-by-side on a 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 theua n5n34rjn- a point exactly midway between the two wires

  Two long parallel wires placed side jz7 jeal5ea3 *yhe64l-by-side on a horizontal table carry identical current straight toward you. From your point of view, the magnj5l 6ya4 e7 ahzjle3*eetic field at the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnitu 3awimhr 7;hg5de of the force between the wires is F. The current in each wire is now doubled. What is the magnitude of the new force between the two wires? hr3;hg5aiwm7

  A long straight wire carries curf / oz)c9 g5i0ebo:i:liv(uvq6 dbk .crent toward the east. A proton moves toward the east alongside and just south of the wire. What is/ u)c ce(zoo :if6v qbv.k:g9idilb50 the direction of the force on the proton?

  A wire lying in the plane of the page carries a curre,53fl5 lg s1l9jm/:ho fbxwkxnt 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, from yoog jlxk9fw5x,:1bl5s 3f/ lhmur right?

  Two long parallel wires are placed side-by-f8sjtj11jnyrg 7y ao 4n5 (tl-side on a horizontal table. If the wires carry current in the same directionntf 1jgsj l 4t785j1on ayy(-r,

  Two long parallel wires are placq/ jluzs5e. gebqsqbax n.-g00/ 7t:sed side-by-side on a horizontal table. If the wires carry current gn.jb0 .q7ts5 u/xe0-sqgze/ b : qaslin opposite directions,

  Consider two current-carrying circular loops. Both are mc)ay (r z 0u+ynl)6edu0mjxzne5a3c * ade from one strand of wire and both carry the same current, but one has twice the radius of the other. Compared to the a(n+e j6 acu5zrn y0*y lm0d)ec)uzx3magnetic 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 fi t dnoo(-7 zo nq9pl3es)95khx(q5jgrom one strand of wire and both carry the same current, but one has twice the radius of the other. Compared to the magnetic moment of the smaller loop, 7d)-no 5 z tep(kqhj(ls5ni939oxg qothe magnetic moment of the larger loop is

  The maximum torque on a current carry bnyph8ygni,.w 3p apd50 x.4ding loop occurs when the angle between the lopy3..h8w0dp bxy g na5n,pdi 4op's magnetic moment and the magnetic field vector is

  When placed askew in a magnetic field, a current ct mt2a (c8pj0parrying loop that is free to rotate in any direction will experience a torque until its magtp80 m(jcpt2 anetic moment vector

  What fundamental fact underlies the operation of essentiall gi12/be u2n juxsuo);y all electric motors ng ib/)us1x2oe uju;2?

  A circular wire loop lies in a horizontal plane 8 , )yq90qkuceln j,rnon 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 the coil tends to lift off of the table because of the torque caused by the currents intejyeq)uk l0c8nq , ,9nrraction with the magnetic field?

  In a mass spectrometer a particle of mass m and charge q is accelerated t-a/l ln b/w6xxokith 5*nw0 7zhrough a potential difference V and allowed to enter a magnetic field B, w 7wi kz*lnot-0 lhnba/xx5 /w6here 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 cha-;4zye 5ymwqo *sg p+xrged 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 ms;w+ 5yq4zo *-pxey gthe 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 paralleix63f fg 2gi0j)okig+l to a uniform magnetic field )2k+gi06gj i3o gfxfiof
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current trqci o( ;lh*nz7s-3wof 10 A 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 eyo0apyn wwa:l)wm1 ,ic0++i a straight wire carrying 5.0 A when it is placed in a magnoa1wywy:e 0 wicp)l,a +inm0+etic 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 l/ok qoq3y.bn q8 u5zba*lw.f 2ong has a mass of 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 tola ..wn5bqo b8oq32uf /qz *yk cancel the weight of the rod?

  A stationary proton is in ayw7 s0 p1a3cx3 axsa9j uniform magnetic field of 0.20 T. What is the magnitude of the magnetic force1y9p0wcsa as37xxja3 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 wi4,u n+a +xigdkth a speed 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 spedej,y4d t pf0*ed 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 travelinm:++lce3s -arseq z7 ag 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 spyp b0wk.; b;x 8ouey,teed 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 od 1/sqj 2*remsf $8.0 \times 10^6 \; m/s$ 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 6rlkq z8t5v t($3.0 \times 10^6 \; m/s$ 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. cz( xopd59 aa ,91/) fg8chd1g*+ rzwlrehnra What is the magnitude of the magnetic field at a distance of 0.15 m from the wireoa)h, rdw8*1f/p r9cchdaz5(la+xre 1 9nggz ?

  A high power line carrying 100qgw-l 69la2da; l4y:iwvy ml00 A generates what magnetic field at the ground, 10 m g2wa9:iywvq4l0;dl -6 llaym away?

  How much current must flow for 4v*31 tlpjri v$1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long straight wire carrying a curren5(nsy3j b 6qhv8p - ukza8khc/t of 5.0 A is the mab8h8 h/a s z6ck qj(35kyvupn-gnitude 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 wir8 btfeu zq:jigouwo*am2;7 *v vh19p.e+m; pres carry currents of 10 A in opposite directions. They aree;uzb 9ptp*8 *gio o; +veq: m. wrfhjua21vm7 separated by 40 cm. What 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 carry currents of 20 Aki ,4j128nqakfo chv , and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the magnetic field midway betwv f,42 1j k,cnkhqoa8ieen the two wires?

  Two long parallel wires carry currents of 20 (qmpyw3;:v loA and 5.0 A in opposite directions. The wires are separated by 0.20 m. At what point betp:y; lqwmv( 3oween the two wires are the contributions from the two wires the same?

  Four long parallel wires each carry 2.0 A in the same 8-z,us 4l1jvb+ukslq 7gyijtme 0 /;fdirection. 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 to the other 0j/ej+;qvu yls ,8tgfl i-mb ukzs174 wires?

  Two long parallel wires carroqj-1zmsvhso: 396sry 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 smr1o -o j936 :hsszvqwires.

  What is the magnetic f66b:gxtjqc s+ield at the center of a circular loop of wire of radius 4.0 cm+:t6sqx 6jbg c when a current of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 500icqf 8an8tw8e)a0uxb 2mu 3 jet)ox; 00 turns of wire. What magnetic field is producc 2na0qw3au8)m8o8;tb)uexit jxe 0fed at the center of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns 9 ezb2u1e)djw j3zu9nis 0.10 m long and carries a current of 4.0 A. What strength neb1ueuwzd3j z)9 29jof magnetic field will it have at its center?

  How much current must pass through a 400 turn coil 4.0 cm lont6/d oa5cfo i.g to generate a 1.0-T magnetic field at tt o56oid/ cf.ahe center?

  How many turns shouletq;0+o1e4 8e zx lnxtd 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 moment of a rectangular loop of 120 turns that carries 6.0uju1rf5 ih-a- ; esel3 A if -fi5 u1ejrse;a3 u-lhits dimensions are 4.0 cm x 8.0 cm?

  A circular loop of wirxmf /0m(,gxa re 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 f,rgm/x(x0ma magnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sectional areh+uy2trtx3-n 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 ag n *di c).;xv)2uoqku current of 2.0 A is in a magnetic field of 3.5 T. The loo2.u) ucqngxk v)io*;d p has 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 cnvymd., 6 wok82iax(is in a uniform magnetic field of 0.30 w,akdmcn62 oi .8v(yxT. 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 field?

  A circular loop of wire of radius 0.50 m is in a uni kayvuwqo7 drm- j)-l3 w25iz1form magnetic field of 0.30 T. The current in the loop is 2.0 A. What is a w52wvq)1-k zju7- miyl o3rdthe magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop of are)mu k c.tl ac.u4m4)ula $0.25 \; m^{2}$ 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-cha7q8 vbsze.4 xtrged particle (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 velsaovel f0(tlg ()9 7em-w z,zzocity $6.9 \times 10^6 \; m/s$ 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 k:h xqyx7 1 ihhu*m:t19awgwz7V and then moves into a magnetic field of 0.040 T. 7m*gh7 hx w11:hwi9xtzuqy a: What is the radius of the proton's resulting orbit?

  A proton is accelerated from rest througrdn-4 lne3sjj 8a fv2:h 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Determine the radius of the path it follows8v nd-ne 2ral34jfj: s.

  A beam of electrons is *kcxc.r3-ac9 jzybl7 accelerated through a potential difference of 10 kV before entering a velocity selec.zk xa7bl-*jcc9r3 y ctor. 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?