If the north poles of1m y2r- pjme1c two bar magnets are brought close to each other, the magnets ecm 21mj1r-yp will

  If the south pole of one bar magnet is brought near the north pole of a secon 5sunuha0bp0jl h)q:n77by kg9z i*6ed bar magnet, the thh5b9 70k yz u6a s:qj eiln)pun0b7g*wo magnets will

  If a bar magnet is divided into twoqgp34 my *k+n;qvnav3 equal pieces,

  The Earth's geographic North /;:xqk7o w epu5z cud8Pole is magnetically a

  The south pole of a magnet points tox wk-oc(;z:o j ivk/6cward the Earth's

  An electric current h3;yyfybr )y7produces

  Which of the following is cort /9hm.yhkrdn764i7 x+9hyskd79:v pywdpti rect?

  A vertical wire carries a current straight down. To the east of this wijc0 9v/nzv9* bcwh5bzre, the magznbh c90/z*bj5v 9wcv netic field points

  A horizontal wire carries a current straigqce)tw1mpw idj++w,ax4 h 9 k)aqvj14ht toward you. From your point of view, the magnetic field caused by acwq1,phewi+)v1xd k j4q wm+jt4 a) 9this current

  A current carrying loop of wire lies flat.qawb ee6wzycm3fu6t,7mh ,9 on 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 curwemf.6, ,uc a9e z 63thbqw7ymrent, outside the loop? The magnetic field

  A current carrying circular loop of wire lies flat on a table top. Wsn:sfl1 t9j1nhp0 p8 ghen 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, inside the loop? The magnj n 9:lt1 nfhg0pp8ss1etic field

  The SI unit of magnetic field7w+/rlt:v 5e/ x xsffb is the

  1 T is equivalent to2o 1e7 egjsi3d7e8rxmz (ol +j

  The direction of the t xzky29af10cforce on a current-carrying wire in a magnetic field is described byt9zcy1a xk 20f which of the following?

  The force on a current-carrying wire incec7 f, tf:a0z a magnetic field is the strongest when

  The force on a current-carrying wire in a magnetic u/lcvo)t+j* iv 8m+rbfield is equal to zero when

  A vertical wire carries a current bxnai 2l oneg)*o9n46straight up in a region where the magnetic field vector points due north. What is the direction of the resultii* o) b9lox6an e2n4gnng force on this current?

  A charged particle moves and experiences no magnetic forz/kwe.c*fmm2 ce. From this we can conclude tha/2f. mw k*ecmzt

  A charged particle moves with a constant) s, 11i.vh* tfr7aani, kqbmi 0db7in speed through a region where a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting on this particle will be maximum t i07 n,qa1. nh7v,di*)ibifsmbakr 1when the particle moves

  A charged particle moves across a constant ypi,oy euf(/ 6 q- ay)h no7xd2f.lv/dmagnetic field. The magnetic force on this particlel7 uy2(yav/yeh/don o q)dxf-6,.i pf

  A charged particle is injected into a uniform magnetic field such that i ftx16ncz*nl 1ts velocity vector is perpendicul1n*f6t n1xczlar to the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is obserh-:r nf s/i4hih5sl)eved traveling in a circular path in a uniform magnetic field. If the particle had been traveling th:hf)-nl rihs/is54ewice as fast, the radius of the circular path would be

  A particle carrying a charge of +e travelj(dfk ddk )ycsi r*9o- 6nla1.s in a circular path in a uniform magnetic field.yfsk 6a9*) dd(-linc1ko.djr If instead the particle carried a charge of +2e, the radius of the circular path would have been

  At a particular instant, an electron moves eastward at spe)g19jgb -byajn0hr/ hed V in a uniform magnetic field that is directed straight downward. The magnetic force that a )yh-bjgjahrb9g /1n 0cts on it is

  An electron has an initial velocity to thua6;gs8uu i70x)l u qke south but is observed to curve upward as the result of i8) 0 l q6sxkuuuua;g7a magnetic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a region where there imp1 q e)-,5duud)h cqzs 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 pagec h5q mu)udpe)-q1d ,z.)

  The magnetic field produced by a long straight 3vonj- fd1*npcurrent-carrying wire is

  At double the distance from a long current-carrying wire, the streo;d9/ l7j tskfa3mqky8d 8r0 qngth of the magnetdk9 qt38lf0dy 78q r;sjam/ko ic field produced by that wire decreases to

  Two long parallel wires placed sisl13apy+j) rs de-by-side on a horizontal table carry identical size curr3p 1yjs+s a)lrents 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 between the two wires

  Two long parallel wires placed side-by-side on a horizontal table t6bhul+hb tc67zy( j2carry identical current straight toward you. From your point of view, the mac 6jz6btyh+(hlbt 2 u7gnetic field at the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnitude of the force beta 9cynia-x q(hpbk-i/)zh 3 mz, /,fjrween the wires is F. The current in each wi,a 3/chaxkh-y-,b rz zp i)/qn f9m(jire 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,6e0xc g w4taich;8i A proton moves toward the east along iegcc;w,648 x0atihgside and just south 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 bott1hwg,ja h4ti1,e +u tdom of the page. What is the direction of the magnetic force it produces on an electron that is moving 1 ehdaui hg1,+jt4tw,perpendicularly 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.l xa/)pi,r n:nk9y(yu g +:bw968p7ahmd zxnn If the wires carry cuy,/)nyl +6nwxgm8k: hb p apnza9nr 9(i7ux:drrent in the same direction,

  Two long parallel wires are placed side-by-side on a horizontal table. wm us )eco:nng7-vv4z-tn9(i If the wires carry current in opposite directioo-n)m4u c g- visn: 7tn9evz(wns,

  Consider two current-carrying circular loops. Both are made from one stm+1ebs,/kzy z3po 3phrand of wire and both carry the 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 loo1+pyh s bm3zzpok,e/3 p is

  Consider two current-carrying circular loops. Both are made gm -x,(lxheq 7from one strand of wire and both carry the same current, but one has twice the radiulh-gm x x,7q(es 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 wxk6hlj)-zo /l3cjk *x hen the angle between the loop's magnetic -zhj* lxxokc63)j kl/moment and the magnetic field vector is

  When placed askew in a magnetic field, a currerb dbi-gq 8klq;6m73lnt carrying loop that is free to rotate in any direction will experience a torque until its magnetic moment -mdb3l;l ikq8b6 7q grvector

  What fundamental fact un,z)dt9rk+ 3zdj xl1 g16o lcioderlies the operation of essentially all electric motors?k 9 c1dildoj +l6orzg1z3xt,)

  A circular wire loop lies in az2 g0qn 0lmr8d horizontal plane on 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 horizontalnd 2qg00zr8l m. 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 spectromete,cgzerbpt32x- t6ag+ r a particle of mass m and 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 field is uniform and oriented perpendicular to the velocity of the particle. Derive an expression for the mas3tx,g2- t+za brg6pecs of the particle in terms of B, q, V, and R.

  A velocity selector consists of a charged particle passbbckw7jbq (2:ing 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 east, and the magnetic field ij cb7bbq 2:k(ws directed to the north. What direction should the electric field point?

  A 2.0-m wire carrying a current of 0.60 A is o( q9g5 xdir7s /taux8griented parallel to a uniform magnetic5s/dtgax7 gix 8( qr9u field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a directijnrq ;07i 3hdwon 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 straight wire car9 11+xoldrjnv-(zrld rying 5.0 A when it is placed in a magnetic field of 0.020 T? The wire makesn11rjdrl+z9dvox ( - l 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 .vl-7f; prgypa magnetic field of 0.10 T. What minimum current in the rod is needed in f.p;-7pr vylgorder for the magnetic force to cancel the weight of the rod?

  A stationary proton is in a un p3 wb f+tn(;nm9rd3nsiform magnetic field of 0.20 T. What is the magnitude of the magnetic fon3fp 9+;drw(b 3tnnmsrce 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 spee vm+4;.x bf naj+tvr3pd 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 speedzety3ya0 ay81th;9t f 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,g+;.;b dtmgr)iu y gz 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 speed6 ckctwu :t/ii, )xe-z 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 withre-/4p th lsk. 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 speedlif7j jh- os18vk-a .m 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 (dx 4mc q)xuzb*;a d9da current of 25 A. What is the magnitude of the magnetic field at a dis)d(mqazbx* d49;cdxu tance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magnetic fi4/ k e+; smgpc+obt0ja,gcm- eeld at the ground, 10 m away?+cm,gbc jtea/ spe + mk04-go;

  How much current must flowf7ixi m+7) 33f+hy.asuzl 4kc a(b ttu 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 ca8d( /* hqrfy13kytlwo(p)ge*5o e*gu 8rd xoerrying a current of 5.0 A is the magnitude of th(wpk) e/*8d8 ryod*ytg5x *o (hu3g e1lrqfeoe 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/xn sb5c7z:m s+ j ldx7n+xxi0 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 one wire and 60 cm fs/: 7cm+nil 0 5xxbdjxs7znx+rom the other?

  Two long parallel wires carry currents of-yr p84o)dad, jeuj hoggw,. - 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the magnetic field midway between phgwdoa e4 rdjojg,.-u)y-,8the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in aax/,dj l+a: iopposite directions. The wires are separated by 0.20 m. At what point between the two wires are theaj:+ a,/ daixl contributions from the two wires the same?

  Four long parallel wires eoihy+ 28 )idqgach carry 2.0 A in the same direction. 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 y gd)8i+2i hqodoes one of the wires experience due to the other wires?

  Two long parallel wires carry currents of :.6dp.mbabr j 5.0 A and 8.0 A in the opposite direction. The wires are separated by 0.30 m. Find theabmpb.6:dr.j magnetic force per unit length between the two wires.

  What is the magnetic field at the mc9 d4-y+so 1 o 2hjs5st5hmgf9glo9 ecenter of a circular loop of wire of radius 4.0 cm when a current of 2.0 A flows in the wire?she osg +fo2m1 9yhtd4s9g-o5jc9 lm5

  A solenoid 20 cm long is wound with 5000 turns of wire. What magnetiv9z aj6:ow eb+c field is produced at the center of th9 :e oz+jvw6abe solenoid when a current of 10 A flows?

  A solenoid with 500 tur fv6sr3/ 1elr) pr6nnsns is 0.10 m long and carries a current of 4.0 A. What strength of magnetic field will it have at its cen/6f nps)rl3n s61rvreter?

  How much current must pass through a 400 turn coil 4.0 cm long t,iv /r gtskmy; 3ui)m4o generate a 1.0-T magnetic f43imytr);i/, mk g svuield at the center?

  How many turns should a 10-cm 1n afri- e1pdyr;w k/-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 carrir:v8o5 1*rc wxum.z 0uce bqi+es 6.0 A8 1mi c:wr z0uqxb .o*rcu+ev5 if its dimensions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic field of 0.39;;bbg rr:.rx 0aowfcg* ck4 h0 T. The current in the loop is 2.0 A. What *9 rkagw.fhr40c:;gbc bx;oris the magnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sectional arer;6zyk -,hlita $0.12 \; m^{2}$ 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 i4 7)khaj;hrcnj.l g+f swv i:1n a magnetic field of 3.5 T. The looi.: hnrf7; aj 1skhw+cj4gl)v 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 is in a unifop4 a; h8zyybv1rm magnetic field of 0.30 T. The current in the loop is 2. 48apyy;hz b1v0 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 uniform magnetic field odpq1 8rtow/k 6w(24/.c28kdxeot c fvos k3thf 0.30 T./ e o8t(tqrwd 2ox/ckd 6sfv2ck14h.to k83wp 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 wire loop of area)vgixuhm jv *hj75;,y $0.25 \; m^{2}$ 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 ( tg-5/qhh mk q -yucn87g,b ewm)tk3)icharge 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 velz2mw8h/1 60nwkns qwbocity $6.9 \times 10^6 \; m/s$ 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 1.0yq0tcwp:4 1r;6nohr+iz/g u o kV and then moves into a magnetic field of h6n0;p:w+ozi4yr rog/q1u ct 0.040 T. What is the radius of the proton's resulting orbit?

  A proton is accelerated from restp-7)2f nxge0(jhej-pwika,7cuu s +vn,pyj ; through 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Deup,i0; p,vuk-jeh- xsj2(fj g a+7p7 wy)cenn termine the radius of the path it follows.

  A beam of electrons is accelerated through a potek4-5.xqw 2 iq roq+l6rnm gy9hntial 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 value of the E-field is requiq6k r 4xiqorq2-95 nyghm+.wlred if the particles are to be undeflected?