If the north poles of two bar magnets are broughth3uh .+mh 0ijg close to each other, the magnets wih. m3g+jhh 0iull

  If the south pole of one bar magnet is brought nr 9mofynpv,l d4488kgveb4*m ear the north pole of a second bar magnet, the two magnets rm8lg4dko m4n*b4ev9, p8fvy will

  If a bar magnet is divided into 1r)swbr9 )8xhr /jokvaxdhth 06; bq2 two equal pieces,

  The Earth's geographic North Pole is magnetically vk2dz5: xiqj. a

  The south pole of a magnet points toward the Earth-0py- d8bqv rdya 0b:i's

  An electric current prjauuz 2h85 13 tdt8zapoduces

  Which of the following is corrgwan20;h u4dhye 6ph)ect?

  A vertical wire carries a current stn,nbww y /-m2 xsez7j8raight down. To the east of this wire, the magnetic field poinw ns8y,/jne- xwz b7m2ts

  A horizontal wire carries a currzxx 8ycw/i*5w ent straight toward you. From your point of view, 5ci/wwx zx8y* the magnetic field caused by this current

  A current carrying loop of wire lies flat on a table top. ws ck,0ob p2s; When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic field caused by this curr2skb0,w; pos cent, outside the loop? The magnetic field

  A current carrying circular loop of wire lies flat on )+ ,jrxeo: da/ gsa/lj02ymtxa table top. When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic field caused by this current, inside the loop? The mag0 /y+dagxsre:,2j otj)m/ axlnetic field

  The SI unit of magnetic field is the 1je aui0a;(6aqaz:x0rgqpl7nls( 3xr4hi( s

  1 T is equivalent tou 2,llm0hp4o e

  The direction of the force*bmk p066y f )ilip.) yjbb)slg.-ilu on a current-carrying wire in a magnetic field is described by whicliu pmpkly6 - b)lgjiy. fs.6bb))i*0h of the following?

  The force on a current-carrying wire tf tx ;(h2vnsvw1i,y0y)sy;, wi+pde in a magnetic field is the strongest when

  The force on a current-carrying wire in a magd.yldpdjc p; f2/0m 7znetic field is equal to zero when

  A vertical wire carries a current straight up in a regio6yyi2yc.o+ z( svxb n.n where the magnetic field vector points due north. What is the direction ocy6x+ys o(b2iv .yn. zf the resulting force on this current?

  A charged particle moves and experiences no magnetic force. ; dbjix(ett d6n:ccm(i. 3+v xFrom this we can concl t v ;cnc+e3i:td(jxbm.d6(xiude that

  A charged particle movtnkz a vkq2e9ev sg/ +l- i1cs8vb/mdbr0)l5 6es with a constant speed through a region where a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting on this particle will be maximum when the paqc +6 e8vk1b -vbt/l/v9gi52n azm)sldrsk0 erticle moves

  A charged particle movv t7ebm:k .6 -gff7fhies across a constant magnetic field. The magnetic force on this partib:hef. gik7tvf76 f-mcle

  A charged particle is injected into a uniform magnetic field such that its velxf;b6g6,ywdqh(u uq* ocity vector is perpendicular to the magnetic field vector. Ignoring the particle's weight, the particle will;(ufqwu 6qydgx *b 6h,

  A charged particle is observed traveling i w7)aj. i3gcqan a circular path in a uniform magnetic field. If the particle had been traveling twice as fast, the radius of 3j7a ga.wq)ic the circular path would be

  A particle carrying a charge of +e travels in a circularfwok x,e:0h.(rid9igs5a cfae5ym;.1dw i: s path in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of the circular path would haves.gii9owi5 fwd(05::1kaxm y s;aerh. c,df e been

  At a particular instant, an electron moves eastward at speed V o8+vro4fq 4xu j( t)qbzb4bo+ in a uniform magnet8x+ftbz+4ruqjqv4 o 4oo)(bb ic field that is directed straight downward. The magnetic force that acts on it is

  An electron has an initial velocity to the south but is obse;j -j6-; gla.hwm-ypicuo8 fdg4c* sbrved to curve upward as the result of a magfg6ajm *.byi- hjl u-d-; w c8gcpo4s;netic field. The direction of the magnetic field is

  An electron moving alongntg8 , cz.5szm the +x axis enters a region where there is a uniform magnetic field in the +y direction. What is the direction of the magnetic force on the electron scm gt8n5z.,z? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced by a long straight curr* xn5c+w,i3wkxj gcp-oj 0op; ent-carrying wire is

  At double the distance from a long current-carrying wire, the strena:bme6+j/ w l0xti, dk,s *rdfgth of the magnetic field produced bywbm ks6diafd0:xr,/l*je + t , that wire decreases to

  Two long parallel wireimi h ;;cukay4fy , g1t(/pac8s placed side-by-side on a horizontal table carry identical size currents in opposite 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(u y41kc/ cphmgfa8 a ,y;;iti the two wires

  Two long parallel wires placedponbu ky xh:99)7x*)jak /emrzvy 90ge/bvz. side-by-side on a horizontal table carry identical current straight toward you. From your point of z pgyjkru/).:ob9) m9 /e vaxve9bzn07 khx*yview, the magnetic field at the point exactly between the two wires

  Two long parallel wires carr edp +ocjf*xc+5:j7 .ons gzb so./*ary equal currents. The magnitude of the force between the wires izxsr+ cc7paeb+o*gd5j /oonsj :. f*. s F. The current in each wire is now doubled. What is the magnitude of the new force between the two wires?

  A long straight wire carries cqgwvyk*ruf .10 8q2; gdgo*awghml4(urrent toward the east. A proton moves toward the east alongside and just;q(a8 ol2 wrgfg**d0 vg1gyw m4.qkuh south of the wire. What is the direction of the force on the proton?

  A wire lying in the 7vfzzx-uzin d2 n+t)q80k7nv plane of the page carries a current toward the bottom of the page. What is thenqn0vz z7+n fz-t)ukx8 7d2iv 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 placedww2sex6 v6e958k:zu0x juqc k side-by-side on a horizontal table. If the wires cv0wx8 qukjc:2x ke59w s66 zuearry current in the same direction,

  Two long parallel wires are k7ky8 9xf 0j jk qekqvh)3h6;fplaced side-by-side on a horizontal table. If the wires carry current in opposite directions, k 3kh8hkj) ;j6qf7y9kxq0vfe

  Consider two current-carrying circular sf4;yx3-gge y 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 field at the center of the smaller loop, the4x;gy esgy3-f magnetic field at the center of the larger loop is

  Consider two current-carryingt9w 6ra 8jd7wa circular loops. Both are made from one strand of wire and both carry the same current, but one has twice the radius of the ot6awrj 8taw7 9dher. Compared to the magnetic moment of the smaller loop, the magnetic moment of the larger loop is

  The maximum torque oxx2 y i:78detxtz4 o-vlbcl8j/a7 f z8n a current carrying loop occurs when the angle between the loop's magnetic moment ax 7btdaexco vfl2zilx:4j88- 8y/7ztnd the magnetic field vector is

  When placed askew in a magnetic field, a current carrying loop that is free to , +lf0i/ao rpb:d;furrotate in any direction will experience a torque until its magnetic moma: l0b+ir u f/,dr;fopent vector

  What fundamental fact underlies the operation of essentially all eleo7-ld8ed +.3ban *sq)bv of2 4tgmbn qctric motors?v4q3dgb 7d obsb8eat 2nmf+*l-)n.o q

  A circular wire loop lies in a horizontal plane on a tablekxki-a kb:-k s):b7y2 kybk.o and carries current in ab:okb xs -ky2k 7:k.i-kb) kay 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 caused by the currents interaction with the magnetic field?

  In a mass spectrometer a particle of mass m and charge q i h/ urv31a-jsfidsp 2k0 bc; tfl5ao12w+* vuys 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 p2vs*bpksl f15jd f;aw/t3 a1i2 +uo r0yv-hcuarticle. Derive an expression for the mass of the particle in terms of B, q, V, and R.

  A velocity selector consists of a charged particle passin y. by4lhx9,ktg 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 direction should the electric field pob hx. ,ytl94kyint?

  A 2.0-m wire carrying a current of 0.60 A is oriented parallel .hrsgh )l+-ja ) uu +3rqsqt(nto a uniform magnetic fi.st-lr (n)g hu)qj+u r aq3+sheld of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A5nevp*9ltugc -0b b ,j 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 straight wire carrying 5.0 A when it isf;wezt-o m7xz5pw */duyc zmo(2 x;c5 placed in a magnetic field of 0.020 T? The wire wdm cyc;o xf-uo7w;z/52zpex 5*m(ztmakes an angle of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long has a mass of 0.05kev/.zilev - 5y ej,e,sv g2h10 kg and is in a magnetic field of 0.10 T. What minimum current in the rod is needed in.ze1kjvy,,e v l 5e/seih g2-v order for the magnetic force to cancel the weight of the rod?

  A stationary proton is in a uniform magnetic field of 0.20 T.6z2gj -ms2a,7qi k cjm What is the magnitude of the magnetic force on , k 2-jqmmcszji2a6 7gthe 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 speeq wx0dv7 m ls/sd12q2pd 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 of2 z jr3*ef ,8(swzszrm(6wzvvxqe z-/ $5.0 \times 10^7 \; m/s$ 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 with sp5mbtbtl m-ew2f f9:t 0s knm5*eed $4.0 \times 10^5 \; m/s$ 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 aj-*e yrs*1s/)ewn l yspeed 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 spee mxv-xk2h4zy p2p -o.nd 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 speed4j lj qis cd*co3n*jc74y3:yk 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 cayf2 (r kihis64v84fatrries a current of 25 A. What is the magnitude of the magnetic field at a distance of 0.15 m frortv( yi6fh fs2ia4 k48m the wire?

  A high power line carrying 1000 A generates what magnetic field at the ground, 1 4weum g0d-nd,04 gnwud-m0d,e m away?

  How much current must flvvjrz/ 2f, 1slow for $1.0 \times 10^{-3} \; T$ 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 isy x;9dm 9t+a+pfn t72sss wfo6 the magnitude of the magnetic fi ;9+ 2mso+ 6ys9s ftnxwpa7ftdeld 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 oppj3 nf2nm0l ya;n1,bx sosite directions. They are separated by 40 cm. Wh2; 3nanms,bynl1 fjx0at 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 A /smodw j3(* kw2t jg1pin opposite directions. The wires are separated by 0.20 m. What is the magnetic field midway betweengj twds *2w 3mpo/j1k( the two wires?

  Two long parallel wires carry curreq.y,sq 5o mo6z(5tyg knts of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. At what point between the two wires are the contributions from tht(6 .kyyo,gm 5qqzos5 e two wires the same?

  Four long parallel wires each carry 2.0 A in the sov6i+rn*u w 3tc5hg -j7l,wcp) svyp1ame direction. They are parallel to the z-axis, and they pass through the corners of a square of side 4.0 cm porpv, c*w6 v5hwlc3u7 jn1g-tps)ioy+sitioned 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 of1 kvwd3+wp n,m 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 lend1+w m ,nwvk3pgth between the two wires.

  What is the magnetic field at the center of a circular loop of wire ofiuit1a:fp7zk( m1/, sx ms1m+ ayqcz: radius 4.0 cm when a z /,pi a:+au1 :s1fxc7(qmmsiyzkm1tcurrent of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. xr3 .jg2gc yhz st:o9.What magnetic field is produced at the center of the solensg.c3 :x. yzgtrjh2o 9oid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carries a current of 4.0)zlw41 vix- qtf/x d5j A. What strength of magneti51fzvidq/ lj wt)x4 x-c field will it have at its center?

  How much current must i*m; nt5mx:iw5dug 9)z j hu2spass through a 400 turn coil 4.0 cm long to generate a 1.0-T ma5nmz g m*;iu:his)j x592tduwgnetic field at the center?

  How many turns should a 10-cm long hi- aejr5.fx6lj)p zzh( ue,vq6z)oz-.,pucsolenoid 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 lo87mqmst ruum mnm :32i-du g6.op of 120 turns that carries 6.0 Ammd7m62t 3.u :mq8uugn is- rm if its dimensions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is wbnl tg*/ dd6-l -mko:in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. Whg*otl lkmw/d:n b6-- dat is the magnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-se h a(w/ dpny/yr1bhb5)or* ,dxctional 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 lj epm,nz)-u, kou7a 0a current of 2.0 A is in a magnetic field of 3.5 T. The loop has ,map,nouej) -0 ukl7 zan 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 zq hw 0(. mneu;o 7+rprisov72a uniform magnetic field of 0.30 T. The io +(7; 0h.zvwpsu no7mreqr2 current in the loop is 2.0 A. What is the magnetic 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 fiec91d3 -u.tttqk)avp kld of 0.30 T. The currqkc )u3.tt-kpv a91td ent in the loop is 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 areaovp.p/ i hvs.)7uhsan7d .c r4cu*vb( $0.25 \; m^{2}$ 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 9wvfp:.cekc-h laa jra +xfc -e)84 l+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 velmx5fce7 ejx n )sq9.0 p6c;d zik5-ighocity $6.9 \times 10^6 \; m/s$ 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 into a +jjw sh.km.d1 5p-qc jy/1ujimagnetic field of 0.040 T. What is the radius of ycdksmqi +1.j1jwuhj./-5 jp the proton's resulting orbit?

  A proton is accelerated from rest throm.ia;l/ wdb:xugh 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Determine the radius of the path itaw:/;li d.m xb follows.

  A beam of electrons is accelerated through a yrj34q5 bp*mq potential difference of 10 kV before entering a pq35 mq*jrby4 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?