If the north poles oa(qr *(s*b04sptg p gcf two bar magnets are brought close to each other, the magnets will*g4*ctp srb( psg0 qa(

  If the south pole of one bar magnet is( ivfqgluu6)- hn8e y cg5:y8 oallz/9 brought near the north pole of a second bar magnet, the tuely ylg69a- /:zh8)(u vqfog5 li8ncwo magnets will

  If a bar magnet is divided infh8.l:/ q xk/*rv yb5s z.txhmto two equal pieces,

  The Earth's geographic North Pole is mamu( :c rnc52oegnetically a

  The south pole of a magnet points toward the E yy nrfopq0a..;dp6d ;arth's

  An electric current prodund)c 0 w3el*tices

  Which of the following iss/rr qyr* lr y+te3jr8ax;*uyv4 *z 4si/e*fg correct?

  A vertical wire carries a current straight d8v)kst *t v,(m4ohy vwown. To the east of this wire, the magnetic field poisvm vwt4k)*v (,oh 8ytnts

  A horizontal wire carries a current straight toward you. F1qn yu p);,3tb.soadhrom your point of view, the magnetic field caused by th,p)nhs;1q ou3aty. bd is current

  A current carrying loop of wire lies flat on a table top. When viewed from hjks3(1a7jn mcn k; a+above, the current moves around the loop in a counterclockwise senjhajm ak(s+c1nk7 3;nse. What is the direction of the magnetic field caused by this current, outside the loop? The magnetic field

  A current carrying circular loop of wirrc )cwrc3;3- p y)sftde lies flat on a table top. When viewed from above, the current moves around the loop in a counterclockwise sense. What is the dydrr3))f;s3 ccw tp -cirection of the magnetic field caused by this current, inside the loop? The magnetic field

  The SI unit of magnetic fielpvf0yk7i: (tk spxnh 6vd+ 9u2d is the

  1 T is equivalent ton8cq qnqm,sxril4f19m 3b28 j/d4j:co/geu t

  The direction of the force on a current-carrying wire in a magnetic 4d8 fiy4fx,*0d4m9nfxj ofco field is described by which of the4ij0 yfo*md f4xx,do4f9nfc 8 following?

  The force on a current-carrying wire in a magnetic field is the strongest when-vgpfdy.f v( v :sw: p*q18sw*bs3nlv

  The force on a current-carrying wire in a magnetic fielr.zz3y /cpts;2 b.swuqw: h2hd is equal to zero when

  A vertical wire carries a current straight up in,k -+: y 4k5nazmagnze a region where the magnetic field van k-e ,zyg kan5m:+4zector points due north. What is the direction of the resulting force on this current?

  A charged particle moves and experiences no magnetic force. Fwc pf510/yeb lnd1h)r rom this we can conclude thatb flehnd) 1w cr150py/

  A charged particle moves with a constant speed t/8*8jau e6vk5w g;dxfjm 6y yqhrough a region where a uniform magnetic field is present. If the magnetic field points straight upward, the magneti*kdajxj /8 fe5m6w8g;yvqy6 uc force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constant magnetic field. The dn*y1 -xrq6y jmagnetic force on thi6* 1 rqyx-djyns particle

  A charged particle is injected into a uniform magnetic field su +rma;e(dm8d i 7:s m;sg6nocich that its velocity vector is perpendicular to the magnetic field vector. Ignoring tmg ic;onm+:ided 7rs ;s6ma(8he particle's weight, the particle will

  A charged particle is obs84k otcql5ux- erved traveling in a circular path in a uniform magnetic field. If the particle had been traveling twice as fast, the tq 854 -uxklocradius of the circular path would be

  A particle carrying a charge of +e travels in a cj-5p qlq k1ii3ircular path in a uniform magnetic field. If instead the particle carrieik pqq1 l5i-3jd a charge of +2e, the radius of the circular path would have been

  At a particular instant, an electron moves eastward at speed V in a un vm1ea 2jcu) -zaabg/*s -cndv8t 5n7fiform magnetic field that is directed straight downtcv n5* zsb7 na-ja/e) 218cgfvaud -mward. The magnetic force that acts on it is

  An electron has an initial velocity to the south but is observed to 0c)qug(my( rccurve upward as the result of a magnetic field. y(m uqrg(c )0cThe direction of the magnetic field is

  An electron moving along the +ra+44etv;)kq lf52jcg 4mrhs4ar nx9 x axis enters a region where there is a uniform magnetic field in the +y d9eflxg+j4ck5q 24a;rh nts4r m)r 4vairection. 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.j -a: 0qzqem- gmwd :1ylyk9v2hq0bk straight current-carrying wire is

  At double the distance from a long current-carrying wire, thb u 55fgtqi4n 7ybvm72e strength of the magnetic field produced 7g5vqu mft b2i nb54y7by that wire decreases to

  Two long parallel wires placed side-by-side on a horizontal table caxwsw1x xf 62,irry identical size currents in op1i2 sw f,xxwx6posite 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 duw+)u,b le /atable carry identical current straight toward you. From your point of view, the magneticuw/b,ue) la +d field at the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnitude 7p-2qn 6m )zddsxyt(jof the force between the wires is F. The current in each wire is yzt7nd q2smd6)j p(-xnow doubled. What is the magnitude of the new force between the two wires?

  A long straight wire carries current toward the east3g4t3z(t enheta(y. t4g 1lt +tlzcp 3. A proton moves toward the east alongside and just south of the wire. What is the dic(+pt t. 3ttllz4eg33t4ae1gy ( htznrection of the force on the proton?

  A wire lying in the plane of the paut4ij1 uzvy5o3.nn ya5/p -ik ge carries a current 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 o u-vozit41./ai n k3pnyj55u yf the page, from your right?

  Two long parallel wires are plactgkq sr1a 08.ak*zrs: ed side-by-side on a horizontal table. If the wr0*1sagr tk.8aks:zq ires carry current in the same direction,

  Two long parallel wires are placed side-by6p0js*htmz wf4wm0r6 u3h khcr77y4j -side on a horizontal table. If the wires carry current in opposite directions0fj6y*p40cz t3hr4u 7 hw swk67hmjrm,

  Consider two current-carrying circula*pwe10jq8+ qmm dy l1xr loops. Both are made from one strand of wirxlq +d1 8*p we10jqmmye 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 loop is

  Consider two current-carrying circular loops. Both are made f3*7jwh 6lth.j fko( rurom 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, the magne*u h lw.hfkjj 7r6(ot3tic moment of the larger loop is

  The maximum torque on a current carryinrvb-.nwu usb3) :) diug loop occurs when the angle between the loop's magne)d unbwr u)vb-.i:3sutic moment and the magnetic field vector is

  When placed askew in a magnetic field, a current ie .h)qowxh.0carrying loop that is free to rotate iq w)i..h ehx0on any direction will experience a torque until its magnetic moment vector

  What fundamental fact underlies the operation of essentially all electric mot cf+p3k/x mbq2zthp(mk 1e(k03 rw8 imors?(+zm8hmp3 m fcq iwep tkrk1x20b(/3k

  A circular wire loop lies in a horizontal plane on a table)e)wa p5j2;jd1 s,mxj bxr4ii 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 tabl;)m ,xpxj w4 r1ij isj)deb52ae because of the torque caused by the currents interaction with the magnetic field?

  In a mass spectrometer a particle of mass m and charge q ilb3m 95f 4rzgzs 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 r4 5fb gzlz9m3magnetic 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 charged particlua fg.q -gljsf596n (ce 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, dul5(qff 6 n-cgj .9sgaisregard 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 carryingyvymh0 )9dp t :ljm;j* a current of 0.60 A is oriented parallel to a uniform magnetic fieldym) thvjm0*p9:dj l y; of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of:f9. slm o2zt8y2ttd y 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 a straighf.lm15akjfxsa1v xk 0 )r /yc)t wire carrying 5.0 A when it is placed in a magneta 1jcf1)s)vlrfx./kk 0y mxa5ic 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 long has a mass of 0.050 kg and is in a magnetk( spzd1: ,ii uvt,7kcu9th1vic field of 0.10 T. What minimum current in the rod is needed in ord,c (h1z ks,9 v ivp:1ikutd7uter for the magnetic force to cancel the weight of the rod?

  A stationary proton is in a uniform magr1 njxc t)v14dnetic field of 0.20 T. What is the magnitudexr djv1ctn)41 of the magnetic 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 dmr7tel+a,p po f v /9awc(+7rof $5.0 \times 10^4 \; m/s$ 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 ofg e*++pn)zw0vvg9p fh $5.0 \times 10^7 \; m/s$ 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 no rv+b-s()nv lbrth 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 ylca5,xx j 2l4yiz p+)0c(yktspeed 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 wuu xs6 pls1qzwsb n7*4u10g) 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 speedc -7y: 4indafa 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 a current of 25 A. What is the magnitude of xuzqov)u lh3u1++2 a kthe magnetic field at a distance of 0.15 m from the wir +u xk2uhl u+qvz31oa)e?

  A high power line carryivgmr58,f ru2dng 1000 A generates what magnetic field at the ground, 10 m awayrdrg2u5 ,m8fv ?

  How much current must flow for koa c0:+vo 22 pxnl6ysvwgq 6;$1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from apsx,plhv/ /4ew s +v, 8q:fbdp+hmx5g long straight wire carrying a current of 5.0 A is the magnitude of the magnetic field due to the wire equal to the strength ofs +ql pmd5, gvbvh+4hfs/pepx8,w x:/ the Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry0q+ )b21uxcjshsvt h 7 currents of 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 from th q0b7)shhvtj+csu x2 1e other?

  Two long parallel wires carry currents of 20 A an,( f/ha cvteu5+llye,b.4pj r d 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the magnel y+r lptauh.bfcje /v 4e5,,(tic field midway between the two wires?

  Two long parallel wires carry currents of 20 A and4e6;q/a 3;yh bdqtdvn mz+nt kef.n(+ 5.0 A in opposite directions. The wires are separated by 0.20 m. At what point betwfydzmqt3/k.6 +n b4en+ahnqv t;;e( deen the two wires are the contributions from the two wires the same?

  Four long parallel wires each carry 2.0 A in the same direction. They are pa7z up+:d*lzt wrallel 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 wdp*7:zz +t ulto the other wires?

  Two long parallel wirejpbw3da;pe * 0s carry 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 lb*wpd3j; ae p0ength between the two wires.

  What is the magnetic field at the centerr+1cwpzj:dp) en p- q+ of a circular loop of wire of radius 4.0 cm when a current oqe1j:wczdppr )n+ p- +f 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turnt695u vls nef1; erdp3o8j1hjtio,j * s of wire. What magnetic field is produced at the center of the solenoid when a currente8nfj1iuvd e1,lpo t; 695jtrh3*ojs of 10 A flows?

  A solenoid with 500 turns is 0.10 p :u ec1g6cw p6;y)zf*-gwk jmm long and carries a current of 4.0 A. What strength of magnetic field will it have at its cep uf wk:-g* )g; j6me6cypzc1wnter?

  How much current must pass throu,r8cmtf9k;u y gh a 400 turn coil 4.0 cm long to generate a 1.0-8c u rfk;mt,y9T magnetic field at the center?

  How many turns should a 10-cm long solenovixtur349 5q durql -.id 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.+g 1xtrk6h,yndk 7rw+9nfh e) 0 A if its dinkhre++ 7gfdw,xh n91 6r )kytmensions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic field alab50ps72.xl uo4ph of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque lu aa5xso4h0.2plpb7 when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-sect d.tdklquc: k*it .v+y-l9p.oional 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 6wpl.73qbrhyis in a magnetic field of 3.5 T. The loop hh7.wlyqp3 rb 6as 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 magz efw(a4n2 4vwy 3uwovin-ztp3q :: (anetic field of 0.30 T. The current in the loop is 2.0 A. What is thefz up (ve:q-3z i42 3an (wvwyowtn:4a magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular loop of wire of radius 6ajp5y7 jun ng2d3 hu70.50 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 parallel to the magnenjn3hdgpa 2y j657uu7tic field?

  A circular wire loop xdd +5l:1rjrp qm6h j*of area $0.25 \; m^{2}$ 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 a speed ofgepfovx :zx 01,ica :9mtxo;) $1.0 \times 10^6 \; m/s$ 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 n9ywviqx;35p*v a.cp) q u- bw$6.9 \times 10^6 \; m/s$ 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 kV and then moves int m6 e-jfz/)cia k;*8zvwbyo. to a magnetic field of 0.040 T. m ;./c*ze8i f)aboz6ktv-j yw What is the radius of the proton's resulting orbit?

  A proton is acceleratrfg,j7:ev9 zgz n6m-kww5 oz) ed from rest through 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Determine the radizw 5ge kormnjz f6w-,)gv7:9zus of the path it follows.

  A beam of electrons is a b3ut1yp7dk 9os7 v0wbccelerated through a potential difference of 10 kV beforvbybp1tu so7073wk d9e 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 required if the particles are to be undeflected?