If the north poles of t8sl3.wxtmc:cd .x(l2v p db:p wo bar magnets are brought close to each other, the magnets cld .x(s:tc2 w d:b.xmvl8p3p will

  If the south pole of one bar magnet is br yt4.:a8uziam ought near the north pole of a second bar magnet, the8.atz4 i:my ua two magnets will

  If a bar magnet is div2ese 9 jy-ad-ym-ilgh53 ;cwdided into two equal pieces,

  The Earth's geographic North Pole is ma.mu q:+aap3 cvq9k7 e5h8ur vggnetically a

  The south pole of a magnet poi m1wcw 2bw;,pgnts toward the Earth's

  An electric current producesriq+n2zq q,6o

  Which of the following is cqft 6v123 g3g/ma dtdi os-vs,orrect?

  A vertical wire carries a current strau9-0wjj)xq5vpis f u+ upemw6 cks1/)ight down. To the east of this wire, the magnetic field p kj)5p uu+x-vs96/cs jmqwpwfu1e) 0ioints

  A horizontal wire carries a currenttj )68uvu1ooi+ 1rkhz-rb. dc straight toward you. From your point of view, the magnetic field caused by this cuvuj-r8 o+61z)1d bh.iuctk rorrent

  A current carrying loop of wire lies flat +p d ap5k)2c.zdbkl )hon a table top. When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetldapp2 .kh+)5)cdzkb ic field caused by this current, outside the loop? The magnetic field

  A current carrying circular loop of wiriw0e2vm1ge 4u9q 4l ave lies flat on a table top. When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction levm 0wea u 1g4q9i2v4of the magnetic field caused by this current, inside the loop? The magnetic field

  The SI unit of magnetic ub/ilxoje;e(g8h+x)field is the

  1 T is equivalent tonq 7h)vb)7uep

  The direction of the force on a j sam5u3i2io9current-carrying wire in a magnetic field is desci5js aumio293 ribed by which of the following?

  The force on a curren+0)o)xvfd(tlkv x 2ziiq5ly 1 t-carrying wire in a magnetic field is the strongest when

  The force on a current-carrying wire inow3n e ga t.cw85..noy(3qndw a magnetic field is equal to zero when

  A vertical wire carries a current strwibf;pw1 -lg x tllr7by95(v2 aight up in a region where the magnetic field vector points due north. What is the direction of the resulting ir bwl;l-f9 vy7x2tpb g(15lwforce on this current?

  A charged particle moves and experiences no magnetic force. From this we can co0ngy jowa. r4. 7mv(bh8b lqi.nclude tha0agv8hlb. ro7ibm(.n. q j4ywt

  A charged particle moves with a constant speed through a region or)iov mrp8z-vr/( 8 swhere a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting on trr8/vz o(pm -iosr )8vhis particle will be maximum when the particle moves

  A charged particle moves across a constant magnetic fiexmk+z 6zz+hvep qo7;-ld. The magnetic force on this part;zzp7x6v kh+omz q-+ eicle

  A charged particle is injected into axunhr 8l6+u q 8u-pq,g uniform magnetic field such that its velocity vector is perpendicular to the magnetic q6g+qluxn u8-u hp,r8field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed tr+3)pt7 f gmwdeaveling in a circular path in a uniform magnetic field. If the particle had been traveling twice as fast, the radius of w) pde73mtgf+the circular path would be

  A particle carrying a gs 31tk;j dcmzh;yy*9charge of +e travels in a circular path in a uniform magnetic fie;dz;1 gysh *39ycm tkjld. If instead the particle carried a charge of +2e, the radius of the circular path would have been

  At a particular instwnwvng 0og 96l3d4k;6lmw x 2yant, an electron moves eastward at speed V in a uniform magnetic field that is directed straight downward. The magnetw6w9mgyk02gn6vn 4;o dl w3lxic force that acts on it is

  An electron has an initial velocity to the south but is obseo-lele*h re 5-41itun rved to curve upward as the result of a magnetic field. The directoh1 e4t 5 -i*-enlerulion of the magnetic field is

  An electron moving along the +x axis entpgrf7 h mi-,pw)mqe+2ers a region where there is 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 f- p+)remh p,wqi2gm7 out of the page.)

  The magnetic field produced by a long straight ktv3 b +v2rn2k shp:3of,nfj;current-carrying wire is

  At double the distance from a loaii /3:dw6a eh1 f lh7ljv6+kdng current-carrying wire, the strength of the magnetic field prodj/ifha+l:6a l k i73d6v1 ehdwuced by that wire decreases to

  Two long parallel wires placed side-by-side on a hori 6k(tsoe)vdnod)o3)5xw :w k gzontal table carry identical size currents in oppo ogkd d6o))nxv kw)5es:to3w(site 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-ba l9c 1c uh54nz8imt,vy-side on a horizontal table carry identical current straight toward you. From your point of view, the magnetic field atth1m849a iu 5cz,vlcn the point exactly between the two wires

  Two long parallel wires *p9.h0xk wtdacarry equal currents. The magnitude of the force between the wires is F. The current in each wire is now doubled. What is the mahp*0t kxa.w 9dgnitude of the new force between the two wires?

  A long straight wire carries current toward the east. A proton 5x/b0 b:sjea+s8l sa,b1eo is moves toward the east ax 1s8,jassbb so+0i/ee:5bal longside 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 towar c;it k383wi0ib-sqbd d 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 your-cd83bis0tbi w k; i3q right?

  Two long parallel wires are placed side-by-side 5bjqb dyt u6b366*mffaf ++gbon a horizontal table. If the wi3dg jub6bf fq6m yf56++ btab*res carry current in the same direction,

  Two long parallel wires are placed side-by-side on a hor p 5gz:iwt48syyhli13izontal table. If the wires carry current in opposite directions,sg:8p3iwy5ht4 iyzl1

  Consider two current-carrying circular loops. Both are made from ov9bvf,; ct 3tone strand 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 lavttbf oc, 3v;9rger loop is

  Consider two current-carrying circular loops. Boe-cccv.7 rdu9/z ou;2 cki us/th are made from one strand of wire and both carry the same current, but one has tcu uo9vrs2/d;.zcec 7/cu ki-wice 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 angld9(ly1d0i cx o.n/ipye between the loop's magnetic moment and the magnetic fiend 0 /ciy(1xo.lyi pd9ld vector is

  When placed askew in a magnef0mf:xc(en +t tic field, a current carrying loop that is free to rotate in any direction will experience a f: tnx0(mf+ ectorque until its magnetic moment vector

  What fundamental fact underlies the operation of essvej8hkwnijb . g29 26dentially all electric motors?wg h8ej2d ij6.92kbnv

  A circular wire loop lies in a horizontal plajlh64v v7fzb:ne 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 the torque 67fz vl: 4hjvbcaused by the currents interaction with the magnetic field?

  In a mass spectrometer a particle of mass m and charge q i) 2kr jg,h,lubs 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 bkj),2l, hr guvelocity of the particle. Derive an expression for the mass of the particle in terms of B, q, V, and R.

  A velocity selector consists; 34e:vag lcfy of a charged 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 east, and the magnetic field is directed to the north. What directio4y ga;lv:fce3n should the electric field point?

  A 2.0-m wire carrying a curre wx6op9 g/uqx,nt of 0.60 A is oriented parallel to a uniform magnetipugx9w6 ,/oxqc field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a org,zjgd8;rbt 07 7 epdirection 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 me f*, -2cb it.nfk)dtnvter on a straight wire carrying 5.0 A when it is placed in a magnetic field of 0.020 T? The wire makes an ang ).nf *ctdntk-bvf2i, le of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long 8*:bm4vjh oh(d rtnn8m9 gc l8has 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 to (mm nvgn98d8h ct:hjrbl84*o cancel the weight of the rod?

  A stationary proton is in a uniform magnetic field of 0.20 T. -xon -9arxz7jWhat is the magnitude of the magnetic oxr7 n jaz9-x-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 speed of o*p79umrpv4qfv 7ehh6 it 0g-$5.0 \times 10^4 \; m/s$ 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 od6kp h7d gwhew::6wjiva8f7rev*s ; q g(t18if $5.0 \times 10^7 \; m/s$ 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 travelin xy5o5dm hutjt.+0,uc; *owxb h5vqq7 g 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 speedp+ uqmy ijcxys.fsc 50h0);6 q 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 spe /9v ahfzdx.-red 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 of t r7 pvz:vk7,*-ha df;kbp2qh$3.0 \times 10^6 \; m/s$ 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 isrkbz wr01i:9pi4 1 vua the magnitude of the magnetic field at a distance of 0.15 m from t4rabiuikv:r 0 z1 9wp1he wire?

  A high power line carrying 1000 Afwc n4lvs -u4n6z//fn generates what magnetic field at the ground, 10 m cu-vnn4f 64/n/ wsl fzaway?

  How much current must flow for d w9 ti97v*kuy$1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long straight wire cx1h ig/kn)4u2rusf d 8arrying a current of 5.0 A is the magnitude of the magnetic xnkfu/d 1sg82ihu) 4 rfield 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 10 A in oppositne4tu8cbc 8t /e directions. They are separated by 40 cm. What is the magnetic field in the plane of thec ec8tbtu/4 8n 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 s bj1x i-xb6(7a8 icirA and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the magnetic field m6x7-b1cbrais8j(ii x idway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0oofib /6w 8(uy A in opposite directions. The wires are separated by 0.20 m. At what point between the two wires are the contributions from the two wires the samyw6o o8bu(i f/e?

  Four long parallel wires p1 new rx 3bfhx0giwl7+a) zi0)/kn2aeach carry 2.0 A in the same direction. They are parallel to the z-axis, and they pass bw27lh wia)3ez+/npri0ax )xn 01g kfthrough 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:kc djn*tp n4moc b nley43)9+ and 8.0 A in the opposite direction. The wires are separated by 0.3lo4nd+pmc jen*4n t3c ):b9 ky0 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 wire 4(fq cxl)g m-wof radius 4.0 cm when a current of 2.0 A flows in the wwfg)(-qclm x4ire?

  A solenoid 20 cm long is wound with 5000 t*5jtiq+q95 nylq o 1yturns of wire. What magnetic field is produced at the center oqtt5 q*yqil+5jony 91f the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long aiq k e:;+pbbk 5mwhz(1p sn(/snd carries a current of 4.0 A. What strength of magnetic field will it have at 5hk1/: wszq ps(kbmp( e;nib+its center?

  How much current must pass through a 400 turn coi y()*+nxaap.uuo+ji ai x76v- k zqgx8l 4.0 cm long to generate a 1.0-T magnetic field at u(ki pau+xx)va +x7 oqy ijn-a.8g6*zthe center?

  How many turns should a 10-cm longbgjv.4ki(l/b tt6*44cbval:p wy xb4(o9g oa 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 rectangula- 5s1-fhko57vgp x;su.g i.mebf*uoo r loop of 120 turns that carries 6.0 A if its .-g5-io*hfef uo;k7s po5mxvsb. 1 gudimensions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic fihi /glf2t( cytv33;ngeld 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 the magnetih2; ntgylcit /vg(f33 c field?

  A circular loop of wire of cross-sectc hxaj2d, q4rm wyluf5*.whn 5h5) gjw wz345dional 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.h1h3h0c z28 l2momeb +blxv9m 5 T. The loop has an area hz0hb mxmm2c o38l e b+9h1vl2of $0.12 \; m^{2}$ 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 ww+z ;n kofsw4wi09on:f b+yi+ire 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 of the loop is pa;oiz4ff :++kwwbosn0i +9 n ywrallel to the magnetic field?

  A circular loop of wire of radius 0.50 m is in a uniform xxeeer 8vl;se,n4fbr (gtp/+m );;bumagnetic field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when tefm)e8nb;r(rep;+s xxl e4 tu /vbg;, he plane of the loop is parallel to the magnetic field?

  A circular wire loop of area k+s/c/* i duwv$0.25 \; m^{2}$ 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) hasrh3up;jx k; 2p 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 velocity hp-zi62(l j0eo hsc;d 3j (*okoobt(c $6.9 \times 10^6 \; m/s$ 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 azd a:ga82ls-szi0e :y potential of 1.0 kV and then moves into a magnetic field of 0.040 T. What is the radius of the proton's resulting o-s0 a2dyzszi g:ae:l 8rbit?

  A proton is accelerated from rest through 500 V. tqrh,zjl li5j;92ui8 It enters a magnetic field of 0.30 T oriented perpendicular to its dire ij9uzh,tr2q j ;5li8lction of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potential differenr1t8d(k98blhld7 h sw ce of 10 kV before entering a velocity selector. If the B-field of the velocity selector has a value of 0.01(l8s9d 7dbt rhlk 8wh10 T, what value of the E-field is required if the particles are to be undeflected?