If the north poles of tqx96ka eh lmmr*-5y(a wo bar magnets are brought close to each other, the magnets willa m x*k(el5yhrmqa9-6

  If the south pole of one bar magnet is brought near the north pz4q eak. pt.+hole of a second bar mag4kth+.a zq pe.net, the two magnets will

  If a bar magnet is divided into lyz) bnwu 9faw;ge;.+two equal pieces,

  The Earth's geographnul,kq 00j h*zic North Pole is magnetically a

  The south pole of a 7h 5/ew kzgb:t:bt6* hi z(gi ; ,vacrnu+cas/magnet points toward the Earth's

  An electric current p*+(ycmc; yx-qgl7en9wq n r z,roduces

  Which of the following ise12gws o )zyon03kzqm;: aq: d correct?

  A vertical wire carriemc:a4bu;lx 3/h+o w,lrm d(ud s a current straight down. To the east of this wire, the mag(x3u:+luah,;wdd/l 4c bmo m rnetic field points

  A horizontal wire carries a current straight toward you. From your poi (p7 k//eut)6eb xhsacnt of view, the magnetic field caused by tpts kha(cbu /)6ee x/7his current

  A current carrying loop of y4l.o.myyw 2v wire lies flat on a table top. When viewed from above, the current moves aroyvw42 o yly.m.und 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 wire lies flat on a table top. When vie.fboq 5) ,g8 8x wkv2bbddnd5qwed from above, the current n8d, bb d kv8b w.2oxdq)5q5gfmoves around the loop in a counterclockwise sense. What is the direction of the magnetic field caused by this current, inside the loop? The magnetic field

  The SI unit of magnetic field is thhw *o)3bkzh h;e

  1 T is equivalent toyfqw/k h1+*8p0ee biz

  The direction of the force on a current-c.0cz1i b+xbbp*hf t p*arrying wire in a magnetic field is described by which of.i*p *1+ zcbh0fbbxpt the following?

  The force on a current-carrying wir5 +nifr 9j6o5e7*yg 6h+u qyfse3swz ge in a magnetic field is the strongest when

  The force on a current-carrying wire in atfi 8yk6al37 y.z 4alm magnetic field is equal to zero when

  A vertical wire carries a current straight up inw-lgjgvn k 86) a region where the magnetic field vector points due north. What is the direction ojw-l6g 8vg)nk f the resulting force on this current?

  A charged particle moves and experiences no magneti9g).m2 ucmem wc force. From this we can concgmm cu).w29em lude that

  A charged particle moves with a constant speed through a region where a un:em: 8)n +3 kz3zqgglzvrl fy7iform magnetic field is present. If the magnetic field points straight upward:733 z e mk:g gql+v8r)zylfnz, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a kl8gk3t0d isvq3 3.ww constant magnetic field. The magnetic force on this particlesgwk.lwt 0 id83vk33q

  A charged particle is injected into a un7i d(x7l sz9wsdwo. 3yiform magnetic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring the d79xwysl.3wos(iz d 7particle's weight, the particle will

  A charged particle is observed travelhybc38n2n 3 m r7nb;j kxpd/*zing in a circular path in a uniform magnetic field. If the particle had been traveling twice as fast, the radius of the circular 3 7hb*jmxy d;/r 8ncpz 2bn3nkpath would be

  A particle carrying a charge of +e traveeffb (sz(7+;ay3dk vuz(j3xkls 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 +e;fsbd zkzj(y a x3fk3(u7v(been

  At a particular instant, an electron moves eastward at speed V in a u+ps ,ri343njzswr0gee 1c )q(vqd.zu niform magnetic field that iiz,d3gs+ eu vrj(r3 1w0ec 4)qs .qpnzs directed straight downward. The magnetic force that acts on it is

  An electron has an initial velocity to the south but is observoi(dsky; e kz;o 9z/;led to curve upward as the r9lk yk;oo z(i;s/zed;esult of a magnetic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a reg)kn lo b+v5 zz-dz9vfc(: byb3ion where there is a uniform magneticcnz bz9d:l5(vvfoz +)- bky b3 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 f-kcr:,of;ea xt:es 2mkqb 52wire is

  At double the distance from a long curren 2d-ltgx j,c1/kz*vxk t-carrying wire, the strength of the ma-*l, gc1zkkxv /j xt2dgnetic field produced by that wire decreases to

  Two long parallel wires placed side-by-sideulx zh02xkj6 8 on a horizontal table carry identical size currents in opposi6 zuxh0x2klj8 te 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 ;fl *r ezx+ds3side-by-side on a horizontal table carry identical current straight toward you. From your point of view, the magnetic field;zrs+ f x3el*d at the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnitude of th-p1 z grebl5y1axl;kb agp+qdw pd* )mc/ :*i+e force between the wires is F. The current in each wire is now doubled. What is the magnilgcpzlga+;ye* piwa/db+5r) 1q1x- :p kd*mb tude of the new force between the two wires?

  A long straight wire carries current toward the east. A proton moves toward thea5 :tsxrvmm4sc-0rnh j +;li+ east alongside and just south of the wire. What is the direction of thetn:r+4cjs i5s-vmax;r l0h+m force on the proton?

  A wire lying in the plane of the page carries a current to5;c1 gwwq w,tt a2gm.9hlt0w oqmy,)award the bottom of the page. Whq.gtch5wqmwtoa0l,yw 19ta ;2 ,m )wgat 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 right?

  Two long parallel wires are placed side-by-side oysz5jz giae4n 1b2 7z7n a horizontal table. If the wires carry current s7az4n e51z7b 2ygjiz in the same direction,

  Two long parallel wires are placed side-by-side on a horia: h4c cy 6)*poea:ho;hu y 8ywc.:vpkzontal table. If the wires ca)oepv:y ya:ya4u 6h cwkh:po*.ch ;c8rry current in opposite directions,

  Consider two current-car0ls;tn9mqpa ti ) v6aay)e/d4rying circular loops. Both are made from one strand of wire and both carry the same current, but one has twicetqyat9 4/)l6is ape0d) n ;amv 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 circqn8j9y j)ijf d0 q2ejvm08 8wfular loops. Both are made from one strand of wire and f0qm8n29yewjvjq8j 80)jf id 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 when the angle bet51: j8fjkvcvi-l+ fdn ween the loop's magnetic moment and th f8nckvd j5j: ilf+-1ve magnetic field vector is

  When placed askew in amh(h+go 1n2((b ec;z a.yr vus magnetic field, a current carrying loop that is free to rotate in any direction will experience a torque uy((;rn1s h (2 hgomab.+euczvntil its magnetic moment vector

  What fundamental fact underlies the operation of essentially all emmv8 l p+4xyc2eqf.,nlectric motors8 y xm.,4mqn+fc2levp ?

  A circular wire loop lies in a horizontal plane on a table and4 o rsf54krxm9 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 t9rx 5frkso4m4 he horizontal. 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 spectrometer a particle of mass m and charcl h+ vp6.y4le u7k+cwge 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 mass of the particle in terms of B, q, V, awcck +le+7hv64u.ypl nd R.

  A velocity selector consists of a charged particle passing ifq 0d-)tosv4)v) g2d gl 9hcy2o8fajthrough 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 selectod8y49)ojft c vdgf 0sga2vo )-lih2q)r, 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 parallel to a unifo0mmqbezkihu51qtk io,mg t86/u* w 84rm magnetic field otk,86 o tmu ihq m8*z4w/qg1eu0m5 ibkf
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a dxgv7 wjq(tzgv x klz7-qw;hq;) 5 0x(d//yweeirection 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 carr qy *g/3r0t8d:f,ksmxnm9hj pk n( :iuying 5.0 A when it is placed in a magnetic field of 0.020 T? The wire xq8j9fnmh:/ ymikp t sukg,(d:*0r3n 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 magnei0i g/pktxn(cc e 6.s4tic field of 0.10 4/( ci60.kicsgne xptT. What minimum current in the rod is needed in order for the magnetic force to cancel the weight of the rod?

  A stationary proton is in a uni8i +fhto)) fmb sm7s.nform magnetic field of 0.20 T. What is the magnitude of the magnetic 7h)m o+t8 s mibfn)sf.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(q8gdaxadzxv0k*6e) e x2z3c 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 q2n k-bu85jlfhf yr;6 a speed 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 )py5pj ky/zc iov73cse;(3ycdue 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 speed ofz +g1e*efvba0u2r hb7 $8.0 \times 10^6 \; m/s$ 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 speedu:li z .nv:(qp 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 ofmh5x6 f sj :v7ikhh-y, $3.0 \times 10^6 \; m/s$ 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 straight7 pi( b /w)czpk5-qf)ffzc *lx wire carries a current of 25 A. What is the magnitude of the magnetic field at a distance of 0.15 m* zfwfi)f/bc -p)7 lzc5kpx(q from the wire?

  A high power line carrying 1000 v8 5.t7ahufbo A generates what magnetic field at the ground, 10 m aw htvobau78 5f.ay?

  How much current must flow for8c*f)nui ):sqx 21d sw:laqy*. elpyq $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long st6a1i9pton 5pn3m cdz)raight wire carrying a current of 5.0 A is the ma96oti5n1 c n)zp3apdmgnitude 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 wires carry currents of 10 A in opp i z tkjkd7xkvy4(3-m5osite directions. They are separated by 40t74 dk-v5km3xk y(zj i 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 vsfa- i80zegz0ddh8r);n 8t*yt yj5i and 5.0 A in opposite directions. The wires aest* -h80n5)0jridfydy g8iz at8v;zre separated by 0.20 m. What is the magnetic field midway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.h 6cd- )h4teyq7fj,f 7npel n00 A in opposite directions. The wires are separated by 0.20 m. At what point between the two wires are hf -e4 7net7ly dhn0fq,j6)pcthe contributions from the two wires the same?

  Four long parallel wires each carry 2.0 A in thecpb xu;yk 0l0( 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 does one of the wires experie0;ylu(bp0 xc knce due to the other wires?

  Two long parallel wires carry curr1)gg;is,z7ue h slhe) ents of 5.0 A and 8.0 A in the opposite direction. The wires aeegug7 h 1zshi;),s)lre separated by 0.30 m. Find the magnetic force per unit length between the two wires.

  What is the magnetic field at the cenp)p 3y r-r0m9poblj2kter of a circular loop of wire of radius 4.0 cm when a current lp3jyb 2pp-mk ro0)r9 of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. Whaul. (f:. g;xnb3osburt magnetic field is produced at the center of the solenoid when a currn.r.( g 3olsfbuu b:;xent of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carries a current of kx h9 - )7oea5ms9pvrnrl-f )a4.0 A. What strengkr9hv mae no) - al57fpr-9s)xth of magnetic field will it have at its center?

  How much current must pass through a 400 turn coil 4.0 cm long to generamio,9p upk )te7b;:xnn 4p dx0te a 1.0-T magnetic field at the centm p4uobe,n i;x)t kpp7d9x n:0er?

  How many turns should a 10-cm long4q; wfqol+;j 9zw0j ak 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 k2nsflxbr)b0a7 0t k2120 turns that carries 6.0 A if its dx2b027kasb0 tk rn) lfimensions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic fihbz c/a,b .16d);z pi flpcq,ield of 0.30 T. The current in the loop is 2.0 A. What is thec,z);aqhfdc .i,/ pbl bzip16 magnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wnco 3avwor/5 jp2wz*s;0lku*ire of cross-sectional 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.cro +k bk (e82p8vmfw is in a magnetic field of 3.5 T. The 8rwoe(f cv8mk p+. b2kloop 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 is8i;kz6j 5v3yd1 klwaag wy2(n 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 thevd az2(y;kyaiw 831k5 js wlg6 loop is parallel to the magnetic field?

  A circular loop of wire of radius 0.50 m is in a uniform magn)nzyh k v(4mks9vuo4 :etic field of 0.30 T. The current in the loop is(m44 ns)o 9hyz:vu kkv 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 areiw3/n1 opbx-cj/i 7.rs tv sjsb( :+dja $0.25 \; m^{2}$ 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 sin) fqp8:zxw akon r6p-l:kl3s6 gle-charged 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 velocity g6xevrud t +)kkp f2/1$6.9 \times 10^6 \; m/s$ 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 throuw 4rwy,:miqoe4v*9 rm pk9pj3gh a potential of 1.0 kV and then moves into a magnetic field of 0.040 T. What is the radiur9y jov:eri4 p*wq 39k4wpm,m s of the proton's resulting orbit?

  A proton is accelerated from rest through 500 V. I;bkbxg(b;,m;ywkq6 j7 h0gza t enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Determine bb0g(q7wy;,6jg;; ka hx kzbmthe radius of the path it follows.

  A beam of electrons is accelerated through a potential dif lpe .8zfx53izference 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 required if the particles are to be u lf5.pzzx3ie8 ndeflected?