If the north poles of two bar magnets are broug dh8rh c20i)usht close to each other, the magnets wi 8ishu0rc)2hdll

  If the south pole of one bar magnet is brought near the nort.6(x zwll(gvdh pole of a second bar magnet, the two magne.vg (zx6ll wd(ts will

  If a bar magnet is divided into two equale3f h7lj*++kxs1mijr pieces,

  The Earth's geographic :1suyw/g djx2o b *0b 9u(dnjz k*reo9North Pole is magnetically a

  The south pole of a magnet point/lv,jk 3 ov;dbbnkk :n1mp0n6s toward the Earth's

  An electric current pro0bi /jiv/zz4mduces

  Which of the following is correct ytz1b gz11lw(?

  A vertical wire carries a current strakw dzlb3a 37/4ovieiep-(3c light down. To the east of this wire, the magnetic field points3 7aw3pb ilol-ie43vcezk/( d

  A horizontal wire carries a current straight toward you.o2wh.r3 8pew om: ysap:k+lg.bwi:l8 From your point of view, the magnetic field caused by this cupoy ioek:8 ma blw : p.:2+3r.h8wlwgsrrent

  A current carrying loop of wire lies flat on a tab p.zy aqy1ltn684mdx u r7)0vgle top. When viewed from above, the currd4q6l7 t)xg1 ayumpzy. rv8n 0ent moves 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 wz (7ynfl - n+2eoul3xz:jdm (oire lies flat on a table top. When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direy:omx+enzlf l- 7jdzuo( 3(n2 ction of the magnetic field caused by this current, inside the loop? The magnetic field

  The SI unit of magnetic fdv ivz (-b9u:vield is the

  1 T is equivalent tohtwl mb. k,x63 k)(jya

  The direction of the force on8 0uvpojb27a 6qw oyn1 a current-carrying wire in a magnetic field is described by 8y w6uj1o7o aq0npv b2which of the following?

  The force on a current-carrying wire in a magnetic field is t,o5e0n,utcq: u:ux pw he strongest when

  The force on a current-carrying wire in a magnetic field8 fc .5x)hrzu7wr*j jy is equal to zero when

  A vertical wire carries a current straight up+s2mt 0ds rc/r+ph7+qgtc3r h in a region where the magnetic field vector d2cpm+7/tr+ r0+qrt shhg c s3points due north. What is the direction of the resulting force on this current?

  A charged particle moves and experiences no magnetic fo/2 1u6umt fkci4 -wqgorce. From this we can concludem g /tcw4ku i12-ufqo6 that

  A charged particle moves with a consta2 q rp8qr5mwnvyq8. ;cnt speed through a region where a uniform magnetic field is present. If the magnetic field points straight upward, the ;qvc 2.5rqn8w ry pqm8magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves acroj f7 m u5:llapx(le1.lss a constant magnetic field. The magnetic force on this pef5(xml:j la1upl7 l.article

  A charged particle is injecte+ xeec a*v9;dgd into a uniform magnetic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring the part*eg+x vd9c;ea icle's weight, the particle will

  A charged particle is observed traveling in a c8e x)+vhed y-,cqta/hircular path in a uniform magnetic field. If the particle had -dv yxhq/chee,+)8t a been traveling twice as fast, the radius of the circular path would be

  A particle carrying a chargk;-vn emht loa2c:e4) e of +e travels in a circular path in a uniform magnetic field. chn-av2lm4) k:;oet e 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 auk) v01nsb bkk,r3/ bet speed V in a uniform magn,k rbvbseb0 ku/13 )knetic field that is directed straight downward. The magnetic force that acts on it is

  An electron has an initial velochn-tuh +.syf*ity to the south but is observed to curve upward as the resuht .shf+-un*ylt of a magnetic field. The direction of the magnetic field is

  An electron moving along the +x an w c-jwfx:1psx*, u:xr/ q;raexb7+txis enters a region where there is a uniform magnetic / uqtp cjx:w7+ x:bfw sxean*x,1;rr -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.)

  The magnetic field produced by a long straight current-carrying wirsgd/j c9bbf. pzn9*c2 g -qy9ce is

  At double the distance from a long current-carrying wire, the str 8v*rvhej 9yh3ength of the magnetic field produced by that wire decrehy*vr9evh 8 3jases to

  Two long parallel wires placed ixrm3ezt w 0t3ldo;81:9uq8 ez9 kqxn side-by-side on a horizontal table carry identical size currents in opposite directions. The wire o9k3elqzi01 3 rtx; mt ueq wn:98ozd8xn 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 wirz p5krwdr 4;4-kvq/yy 8pv ep1es placed side-by-side on a horizontal table carry identical current straight toward you. From your point of view, the mag 5ekp1v ywrd/vy48z q4p;-k prnetic field at the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnitude of the forcebh 80vfezw eh4mu( gq140q3hp(z3z uc between the wires is pbmzwu0 u(8geqv3zhh4 h0 1 (4zefqc3F. The current in each wire is now doubled. What is the magnitude of the new force between the two wires?

  A long straight wire carrgml652pju-f zun+,h/ljkkt +ies current toward the east. A proton moves toward the east alongside azk jn,/2up 65t+k hjgull-+mfnd just south of the wire. What is the direction of the force on the proton?

  A wire lying in the plane o sp6 )scy,4qcc/t/wkaf the page carries a current toward the bottom of the page. What is the direction of the magnetic force it produces on antks c a)6c/p4/csq,yw electron that is moving perpendicularly toward the wire, also in the plane of the page, from your right?

  Two long parallel wire1q kb(so( 9syos are placed side-by-side on a horizontal table. If the wires carry current in the sam( o19bo(kss yqe direction,

  Two long parallel wires are placed side-by-side on a horizontal ta ./ q5:8 jepmf7vgcxyfble. If the wires carry cjmvegf:f5 y/ 8cqpx7.urrent in opposite directions,

  Consider two current-carrying circular loops. Both are made from one st14xf x7q yb(rsrand of wire and both carry the same current, but one has twice the radius of the other. Compared to the magnetic fis 7b(1y4rxf xqeld at the center of the smaller loop, the magnetic field at the center of the larger loop is

  Consider two current-carrying circular x5o a9mk20of q1c8ajz loops. Both are made from one strand of wizo8mjxak0a95c o2 qf1re and both carry the same current, 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 occurs 5 fpko7igo4aga ow -p9+m2dcb7 ;.a epwhen the angle between the loop's magnetic moment and the magnetic field vec+ 2c.g7koo4a5f-go pa;m9ea7 pwpbditor is

  When placed askew in a magq j;wd7(d(f;w e u/dxlnetic field, a current carrying loop that is free to rotate in any direction wil 7d(uwjfe / ;xdd(q;lwl experience a torque until its magnetic moment vector

  What fundamental fact underlifu77 7y ocs9mwes the operation of essentially all electric motors 7ymws9f c7uo7?

  A circular wire loop lies ij0xyaxzb926, cwij6p 08(wos ltn h2bn a 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 horizontal. Which side of the coil tends to lift off of the table because of th(z9ohn2twbx abcsj0 jy2 wx806i l6p,e torque caused by the currents interaction with the magnetic field?

  In a mass spectrometer a part5j-7) wl bknfcicle 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. -7wfkc5nj)l bDerive an expression for the mass of the particle in terms of B, q, V, and R.

  A velocity selector consists of a chargeo uh/9cze dl 6ou:05pkd particle passing through crossed electriczk6dou/9l :0uc5 po he 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 direction should the electric field point?

  A 2.0-m wire carryinge /unlwby//-g a current of 0.60 A is oriented parallel to a uniform magneti le/u//gb-w ync field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in n5a-kxvja-jx dh8udiw.+5ihz l 0 v83 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 onyb rlu tx6w..9be3+nux/ y5uh a straight wire carrying 5.0 A when it is placed in a magnetic f..x unyl+wbt5uu/e6b9hx3 ryield 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 0.050 kg and is in a magnetic fieldm +)+o1ecd8ieyk 79joenk -q 0imhr8c of 0.10 T. What minimum current in the rod is needed in order for the magnetic force to cancel the weig0okd 8+ yeqncekoe1)r-im+h9 c87 jimht of the rod?

  A stationary proton is in a uniform magnetic field of 0.20 T. What juif 0(rmv7;:ze q,ykis the magnitude of the magn7qjif0,(kv uymrze;: etic 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 wit(d urhden)yf8 f5j)v 4h 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 speed q3o3 jsl1s ,qpof $5.0 \times 10^7 \; m/s$ 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 wi *q vq5it)if (3g*xmrcth 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 wiy ;ng zs.gt4b(np11,cvmeg* a +fed0zth 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 speedz 1sv;+hh dm)c ri;hlp)f;5kt 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 onysd 93y:0odgyf n 4d/f $3.0 \times 10^6 \; m/s$ 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 the magnitude of t3j*c6d97 abjm r.x3- du pnh2) wf3bhs 7fdepshe magnetic field at a distance of 0.15canj*3rbux dp-pwd29)fh3hs e smbf jd. 3767 m from the wire?

  A high power line carrying 1000 A generates what magnetic fie-6n sijo,k/mawi 8uj4ld at the ground, 1o w/8jj4uma nsi6i -k,0 m away?

  How much current must flow f)n2 5- ntj.eli)8k agnco+a csor $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long strbqsg8:6s ,.s ;eoavunaight wire carrying a current of 5.0 A is the magnitude of the magnetic field due to the wire equa ao u.sv;e sn:b8sq6g,l 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.5w k68ep0)jhr:)cny64u r;aqnag a yz They are separated by) rauk8zeq 6a4hyg0)n;5 jw 6arc:ypn 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 A and 5.0 ).2xeaveftg+qbt*b +esd,:n A in opposite directions. The wires are separated by 0.20 m. What is the magnetic field midway between the two wiresb, tx)+a venb*gse2 :q+ edft.?

  Two long parallel wires carry currents of 20 A anzn3j 5sig4gkw ,okp*o9t5 r m*d 5.0 A in opposite directions. The wires are separated by 0.20 m. At what point between the two wires are the cont5zk5 oj,ws n*ogmrtik gp* 493ributions from the two wires the same?

  Four long parallel wires each carry 4u vcqm2)+ lev/:sodu2.0 A in the same direction. They are parallel uu4ql os:dc e+mvv)/2to 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 wires?

  Two long parallel wires carry currents of 5.0 A and 8.0 A in the opposite*q1q,vddnb63i wv df: direction. The wires are separated by 0.dq6i,1wn*fd3 dv :bq v30 m. Find the magnetic force per unit length between the two wires.

  What is the magnetic field at the center of)fz.p glhh8xcf*5d 5r a circular loop of wire of radius 4.0 cm when a current of 2.0 A flows phx5) .l8 ffg*h cdz5rin the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. Whatj (px,:tsj: zg magnetic field is produced at the center of t:g jz,x(:tpsj he solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carries a rjgqof33q ffh ca62+ wjl 95*gcurrent of 4.0 A. What strength of magnetic ffqo6*c+3 jafgh wg59 qj 3l2frield will it have at its center?

  How much current must pass through a 400 awc ft vl/* y78 5cyw851feza1 sbp,cdturn coil 4.0 cm long to generate a 1.0-T magl1s*f7 a fzaeyc5v w5 ,d8t18cycpw/bnetic field at the center?

  How many turns should a 10-cm long solenoid have if it,j(qm *; xugsg;ty(/h ufnhk1 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 lo i xhm7:6.crdg6r vao9op of 120 turns that carries 6.0 A if its dimensions are 4.0 cm x 8.0 ca66x dv ro9ih7 c.rmg:m?

  A circular loop of wire of radius 0.50 m is in a unsro y6nedf f.8 ,9 7 ynb6;gpbmfkr05niform magnetic field of 0.30 T. The current in the loop is 2.0 A. ; dnre,9. grb86smnky607fn yfp5ofb What is the magnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sectd g:n*gacp9;sional 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 of 3.5 0cvzfrx+iy;)w : r(fnT. The loop hasfz )yw +vr nfx0ic:;(r 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.pnc.*o/hz;zk 1j 6yd.-yqlb s 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-hd.*b zq/ 6ysyj1olkc.zpn; 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 fi;om hl*mkq i9rr.3v0yeld of 0.30 T. The current in the loop is 2.0 A. What is ;m0 o. m*v ilhq9k3ryrthe magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop of are4ywqs vv57qlb0l2 6dqa $0.25 \; m^{2}$ 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 partzg3 1xmcvkx62 kj/h/ gicle (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 velocityi xy)ndst50c/slt6r )vz e6zarv r-(, $6.9 \times 10^6 \; m/s$ 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 throy1a q,apw5x7b;7u+6nf q +g cz.(agqwrzkos 4ugh a potential of 1.0 kV and then moves into a magnetic field of 0.040 T. What iz4y 1poc(an xsagzqww7f 6ra7,q qku b+.g;5+s the radius of the proton's resulting orbit?

  A proton is accelerated from rest through 500 V. It enters arb5rj (e.n*r3 r uoh kw+94elf magnetic field of 0.30 T oriented perpendicular to its bw(r4jor k+fe *r9l uehr5n3.direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potential difference of 10 kVzgk0sy 8b m8+w before entering a velocity selector. If the B-field of the velocity selector has a value of 0.010 T, what value of the0wbs8gyk 8+mz E-field is required if the particles are to be undeflected?