If the north poles of two bar magnenmnk-u5 b9(+.yg d rsihn/ h0o-i dfl4r)u e)its are brought close to each other, the magnets /ilg r0d ou4m bh.isn-y-i9)5efdhu)n rk(n+will

  If the south pole of one bax nc2oq;n9 /e9tlf +hajnrpc.)q1 -rp r magnet is brought near the north pole of a second bar magnet, th pp.9; njx)2+cacrr9fheo 1-nn tl /qqe two magnets will

  If a bar magnet is divided into two equal pieces,0c z tlf. iy9o3nk9fl5

  The Earth's geographic North Pole is mgep i i0,rbfjnx-n0c2; 1a k6ragnetically a

  The south pole of a magne6oylnx 9/av75 xo yxa9t points toward the Earth's

  An electric current pr mrp ,,kqzw1e+oduces

  Which of the following is corr7 ,7 ss68yezo dat7 6r kokdk(4o8qhbcect?

  A vertical wire carriesyy2b1a(a ldnm,g+h5fouzr 4d v g7; 4r a current straight down. To the east of this wire, the magn +o l uy1b5z2rdfgga4n;(,m dvhya74retic field points

  A horizontal wire carriemagw9- pt*s /us a current straight toward you. From your point of view, the mat*gm/ w9usa p-gnetic field caused by this current

  A current carrying loop of wire lies flat on a tabl.ruv;+lu qok 5fxh 6g4e top. When viewed from above, the current moves around the loop ilko xh .u5;vrf64q+ugn a counterclockwise sense. What is the direction of the magnetic field caused by this current, outside the loop? The magnetic field

  A current carrying cfqc 8/r(nan./l2sv z kl/8vjjircular loop of wire lies flat on a table top. When viewed from above, the current moves aroul/ks(a 8f/n2.r jjvcnzqv8/ l nd 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 xw,/-trjk-g1v zb n0wdw*t x;bj v-b.0 amp .dfield is the

  1 T is equivalent to2bkf6eq7tb 3qf2y + ki

  The direction of the force on a current-carrying wire in a eor-ku;ut hw)ov+3 0c magnetic field is described br+ et;u co0)wvkuoh3-y which of the following?

  The force on a current-carrying wire in a magnetic field is the strongest wadxa* lqjur3bi z1:bf g:x)5yo; k 6-nhen

  The force on a current-carrying wire in a mjddow0-6( qfxrc -sf+otpwc- p*h 8 2xagnetic field is equal to zero when

  A vertical wire carries a current straight up in a region where the kt:d9 bap1iz+ai/g *wmagnetic field vector points due north. What is the direction of the resulting force on this current?wig* 1a9/iaz d +p:btk

  A charged particle moves and experiena ifii959y1hib8+ie 6 rk5wxjces no magnetic force. From this we can conclude thatj+9k5 ii ryeif a615ibi9xh 8w

  A charged particle moves with a constant speed thro8hzr37 8a a0d( nfiujwugh a region where a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting on this particle will u jdhinw8a0fa(z8r7 3 be maximum when the particle moves

  A charged particle moves across a constant mago;dr7a-bfa jpd9 dd25 netic field. The magnetic force onpa7d5r2oafb jdd9 -;d this particle

  A charged particle is i62nis heoy ytr5ed z11.;j;y bnjected into a uniform magnetic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring the particle's weight, the pajey2 .dn ;yteo56sbhry;11i zrticle will

  A charged particle is observed traveling in a circular path in /l:iae3h/fuxo* o h,zzdw zc q)w 3*w(a uniform magnetic field. If the par*( h wfe u:3)alo /idc o,zxwh/zq3z*wticle had been traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e trav8mn, w5 5cyhpfels in a circular path in a uniform magnetic field. If instead the parmp ycfn5h8, w5ticle carried a charge of +2e, the radius of the circular path would have been

  At a particular inst;g7z)j xgr-zbo oh3u8 ant, an electron moves eastward at speed V in a uniform magnetic field that is directed straight downward. The magnetic force that actsx-b; rg )z8g7hjouz3o on it is

  An electron has an initial velocity to the south but is obs yj14m 22h 0(0ycpia o7bdxthp2gpxb(erved to curve upward as d ( 4mh072jpc2hxb tyo0b xa2g(py1pithe result of a magnetic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a regi:zgywmooe r.n .f**- con where there is a uniform magnetic field in the +y direction. What is the direction of the.yeo *:*fcomwzr.- gn magnetic force on the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced by a long straigh2)rw g xj05lskic4d8 vt current-carrying wire is

  At double the distance f7sp donbpw(03et a 8)grom a long current-carrying wire, the strength of the magnetic field produced by that wirnbp(ps e8gatd0) o7w 3e decreases to

  Two long parallel wires placed side-by-side on a horizontal table carry identicanep/ 9.l9jkz w)x (lgyl size currents in opposite directions. The k9/z(.l 9j w gnxepyl)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-si/j.pdfg7 h-6x zg.oxs 1flp;ide on a horizontal table carry identical current straight toward you. From your point of view, the magnetic field at the pointxhl.gzppf;x -g7.f/ijsd6 o1 exactly between the two wires

  Two long parallel wires carry equal currents. The magnitude of thlir2focy l67.e force between the wires is F. The current in each wire is now doubled. What isl r6y.o7li2 fc the magnitude of the new force between the two wires?

  A long straight wire carries current toward the east. A pruzf kv:4g9 zfiw) a+u 5r9wq0moton moves toward the east alongside and just south of th9qv)wz ru0a4kf :wmg+9i5fz ue wire. What is the direction of the force on the proton?

  A wire lying in the plane of the page carries a current to y,iy8qpy a2mc.+g5lrz-5*ngt snil*ward 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, als.gqi r i8maptcy*l+l5y -s ,znn 2gy*5o in the plane of the page, from your right?

  Two long parallel wires are placed side-by-side on a horizontal table. If th)6fv xeb, ycf;u6:sbme wires carry current in the s fm) fvy6:u,cse;6 bbxame direction,

  Two long parallel wires a8/uf+r s1xyw s))8n q-orjtsore placed side-by-side on a horizontal table. If the wires carry current in opposite directionsxsy+ fwjn/ t-8o8s1)osurr q),

  Consider two current-carrying circular(r/xmf3:gdxkzc/r: ; ; jl oes loops. Both are made from one strand of wire and both carry the same current, but one has twice the radius of the other. Compared to the magneti; ;(rgjdflze/ /kx :s:c rx3moc field at the center of the smaller loop, the magnetic field at the center of the larger loop is

  Consider two current-carrying circular li qyv/bu4npk ))6;0byskb q, loops. Both are made from one strand of wire and both carry the same current, but one has twice the radius of the other. Compared to the magnetic mome 46 bk;s/0qi)yqvybpun ,k)l bnt of the smaller loop, the magnetic moment of the larger loop is

  The maximum torque on baybt/+1kat v.re*0glcj92r x*qpzb),as .y a current carrying loop occurs when the angle between the loop's magnetic moment and the magnetic 9jat+e.y *y1/pqs )0bb z 2rvrtga .kx, *aclbfield vector is

  When placed askew in a magnetic field, a current carrying loop that x jnu yrk4ndpo;s0c+w9s+7px n49iw(is free to rotate in any direction will experience a torque until its magnetic moment vxy 9ndsw7 ;k9i rw( jo+p+nxusc 440npector

  What fundamental fact un) 3qn7v b )ut;l4wa;f lqwflv8derlies the operation of essentially all electric motors?laf q u;t7;q)ww3)fvln4 v8lb

  A circular wire loop lies in a horizontal plane on a table and carries cur9ujv ke,g 1u : lhqw25)musyx-wqw(7krent 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 tendgu(q5 w 1:w eums7jhkl)x,2u 9-wqkyv s 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 charge q is accelerateo,ikfo.sf 4eyy/ 4p k/d 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 mf4o p ski,//ye yk4.foagnetic 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 hv)byab ej08pdk4 (j 3charged particle passing through crossed electric and magnetic fields. The forces exerted bdkyj)a0 48vh3 jpbbe( y 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 carrying n*.,rciosw9da current of 0.60 A is oriented parallel to a uniform magnetic field .9 dwron*s,ciof
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a directd3;;4 8f4 edwqa hmpqsion 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 pe h . mdsrpx/9xg)a3y*vr meter on a straight wire carrying 5.0 A when it is placed in a magnetic field of 0.020 T? The wirex*m/hsga3)vyd .r9 p x 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 r .kfe/w* ,k8ibmf-gebe0cw) a magnetic field of 0.10 T. What minimum current in the rod is r)cbf0/e ef,*8be g-wmiw .kk needed in order for the magnetic force to cancel the weight of the rod?

  A stationary proton is in a uniform magnetic fiel()4rus crhv/ ed of 0.20 T. What is the magnitude of the magneti ucerhr)(/sv4c 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 sr3;cisk fj a1tb9bs;p7a ojfj ( k.x/+peed 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 sp7 9qshreh:2+: svb fpkeed 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 north wmxf*n2 ((*syt+ kfp xz( (p2;i :fqnjnzq 1tsnith 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 wied3fbi li*i 69th 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 spi23png t6f+,j r1bmgnwq37;(uie gr r eed 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 9out 1n hia,y* ce.f-zj6xj2k $3.0 \times 10^6 \; m/s$ 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 cydn*wjzks( t z,w.f -9urrent of 25 A. What is the magnitude of the magnetic field at a distance of kwwytfnjs, 9- .(z*z d0.15 m from the wire?

  A high power line carrying 1000 A generates what ub6*d :-giaac69h go gmagnetic field at the ground, 10 m a:6 gg*bacoi9g ahu-d 6way?

  How much current must flow forr ifof70ip1ew ogs596 $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long straight wire carrying a current of 5.0 A is the b; 6.dtsptv*cvto azt:s6.( umagnitude z;6b atd6opvtv st tc(..su*: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 t3 8r5ek p/*1y 8 kgjks:rlartcurrents 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 ter 1gktkas5r:y8rk*3 t8j l /phat is 20 cm from one wire and 60 cm from the other?

  Two long parallel wires carry xmg1rggzub8,)b1 67p2 firqi currents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the magnetic field midwg)r721 m1,u8 r big qxzig6pbfay between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in oppositeom452msmpw37h) ts7nu u 1u pv directions. The wires are separated by 0.20 m. At what point between the two wires are the contributions from the two wires thup3 om1wtvsph2 u4m 5n m7su7)e same?

  Four long parallel wires each carry 2.0 A in the same direrbid, bk-w :ym-vi9v1ction. They are parallel to the z-axis, and they pass through the corners of a square of -i vrb dbmy v,-i91k:wside 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 opposjtsfb/c,a l3 4m6n vajg4j *3kite direction. The wires4ak*sa 3cjv tm,ng63jlf bj4/ are separated by 0.30 m. Find the magnetic force per unit length between the two wires.

  What is the magnetic field at the center of a circulal /,;9s hzfwghr loop of wire of radius 4.0 cm when a cuw;glfh/, 9z hsrrent of 2.0 A flows in the wire?

  A solenoid 20 cm long is w jt)b idz9 uuv/3qh:/tound with 5000 turns of wire. What magnetic field is prj /ih)/:3q vtbut uz9doduced at the center of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carries a current of 4.0 A. What ql/ /rhp jl.2jstrenlh2 p l//jjq.rgth of magnetic field will it have at its center?

  How much current must pass through a 400 turn coil 4.0 cm l x4b+ wop6w8ki8zztd4cs (uq 0ong to generate a 1.0-T magnetic field at the cent0o kdb64uxz zww (84 cpis+t8qer?

  How many turns should a 10-cm long solew; s7 scw1,m 9,ism*jxcv,zbk )ohu8xnoid 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 r,iv x(/tgmc -aectangular loop of 120 turns that carries 6.0 A if its dimensions are 4.0 c ,c-v(ixmg/ tam x 8.0 cm?

  A circular loop of wire of radius 0.50 m is iwfr b go,i)x)f2;v6g an a uniform magnetic field of 0.30 T. The current in the loop is 2. rxig6v;a2 bg) ),fwof0 A. What is the magnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-ofr93x8z) lke 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 is in a magnetic field od oauva sh0;9v c96q)dhmkq-9f 3.5 T. The loo hm)u dq- 0dvhkaqv o999as6c;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 uniform magn /2xel: jh+ oes7isfn0etic field of 0.30 T. The current in the loop is 2.0 A. What is + lsohi702/ e:fenjs xthe magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular loop of wire of radius ut6t0y.t1v bn 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 parallel to the magnetic fielb6tvtut 01.ynd?

  A circular wire loopwx, nj77uenp5 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) hd 0 5fx6.rx uv*s5ysquas 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 hnkfv3-tk 7,wvelocity $6.9 \times 10^6 \; m/s$ 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 ik2 js.xhcpv2( nto a magnetic fie ksc(p22 vh.jxld of 0.040 T. What is the radius of the proton's resulting orbit?

  A proton is accelerateda ,r6 bqy76fl+*nv247,y ynucn z hpml from rest through 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Determine tnm46uyyhr7 a yp v,nqb7n6*lf2 +,clzhe radius of the path it follows.

  A beam of electrons is accelerated through a potential difit vfg26n ar l/k5c-o.ference 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 undotakcn.v l/ f2r -g6i5eflected?