If the north poles of two bar magnets are brought close to each other, the l);s-el* f5np+lzdzs magnets willfzs5p * nzl+;- )edlls

  If the south pole of one bar magnet is brought near the north pole of a sei zueth,un5 +aob,- (vcond bar magnet, the tw+uitahne z 5,,o(v- ubo magnets will

  If a bar magnet is dividfif, 5ahd5rbrhcj*y(-h 8 uwt ;e8q/j ed into two equal pieces,

  The Earth's geographic North Pole is magneticl0r:vq g ko2+cally a

  The south pole of a magnet points toward th wzcfj(*ls7n r w0j0in9*xah)rta6; ie Earth's

  An electric current produced+:icc;yduqmu0t6f 4 s

  Which of the following ig:be lpzk6f* d2nkya 7y1p(h1 s correct?

  A vertical wire carries a current straight down. To th0 7 ;te83bwnypaqhq8 je east of this wire, the magnetic field7jn 3w8;qeb pq 0atyh8 points

  A horizontal wire carries a current straight toward you. From your point of gil dnm*xh)bxfb5e t8*hwtj8g2t 4)4 view, the magnetic field cag xtime484 db8 *h jwb)ln2g*t)5xht fused by this current

  A current carrying loop of wire lies flat on a table top.t5b anh;6t/ l ucy,-oo When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the tb; youh /aol6-t,n5 cmagnetic field caused by this current, outside the loop? The magnetic field

  A current carrying circular loop o 0xy-hg2 *psl.f2w.2nxqbgqp f wire lies flat on a table top. When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetw -yn2x2.2*0q glsxp qgbfp.hic field caused by this current, inside the loop? The magnetic field

  The SI unit of magnede :7quqjn 1o 9wvaq5om;9a.1f)0kmt rc9 plztic field is the

  1 T is equivalent toprkb 0w)7 sq3oa8n )z+n4nr bx

  The direction of the force on a cyp0 n9h+48 rxeov.qki e 6m-se.+hunfurrent-carrying wire in a magnetic field is described by which of the following?q-m e4.hep0h98+n xe. syir 6v +uknof

  The force on a current-carrying wire in a magnetic field is the strongestteht5u9h*5 v x when

  The force on a current-carrying wire in a magnetic field is equal to zejf3 ;ckzhvm. jzs3gq2m0 1y9qro when

  A vertical wire carries a current straight up in a region where the magnetic fe,.xw8x;r3u iny a8s nield vector points due north. What is the direction of the resultis;r 8uw enx 3,n.a8yxing force on this current?

  A charged particle moves and experiences no /u9k7ps )qr sgx3j h,rmagnetic force. From this we can conclude u ks7h3j/rqg,psxr )9that

  A charged particle moves with a constant speed through a region wo- 6t/kwy oczhmu67z+here a uniform magnetic field is present. If the magnetic field p- m6w +yktz/h cozou76oints straight upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constant magnetic field. The magnx4amts-)7v.khas1s -2g s qhletic force on this partic gm-av- 2k)a shs sx.qt741lhsle

  A charged particle is injected into a uniform magnetic field sucgm-g i8vrdqd-zpgk34x, / z*bh that its velocity vector is perpendicular tg -p/zv xq38-db k m*z,r4gidgo the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in a circular path in a uniform ma-s9rqii r wn2u9+t8:b jerm:ignetic field. If the particle had been traveling twice as fast, the radius of the circular path would b8i- bs9e+i:: w2qrnum r ir9jte

  A particle carrying a charge of +e travels in a circular path in-tqc xyr 7 fk-(/lqv1h a uniform magnetic field. If instead the particle carried a charge of +2e, the radius 7cxkfqv1rl- -hq/ y(t of the circular path would have been

  At a particular instant, an eleulg)/xzn 8s+jamh7cl -u2ci4ctron moves eastward at speed V in a uniform magnetic field that is+l-u s )h4/iczml72 g8xacju n directed straight downward. The magnetic force that acts on it is

  An electron has an initial velocity to the south but is obkl i5t1m21np dserved to curve upward as the r5 lmd1tkin1p2 esult of a magnetic field. The direction of the magnetic field is

  An electron moving along the +x axis enters a region where there is a uniforn;wa 9e a28cuzm magnetic field in thn2;e 9c8awzuae +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 wsy9n-sbb 2 ukl6qp2n j. i(n.jire is

  At double the distance from a long current-carrying wire, the strength of the d(883u5ucta rezo kw ,magnetic field pr(8d5 eortc,auz8uwk3 oduced by that wire decreases to

  Two long parallel wires placed side-a(gv-uudhkc37y3( g j htv s::by-side on a horizontal table carry identical size currents in opposiu3-ghvjvykc3h(ua g(t :d 7:ste 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 s, i 96lv 6d4khhkv6jfplaced side-by-side on a horizontal table carry identical current straight toward youdk,i 4h 66s9kf6 hjvlv. From your point of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnitude of the force betz* qqp4:/tyham5+wh tween the wires is F. The currentwmta /q yz:hqp h5*4+t in each wire is now doubled. What is the magnitude of the new force between the two wires?

  A long straight wire carries current towaral/5i 1etl9 xqd the east. A proton moves toward the east alongside and just south of the wire. What is the direction qi/15at9le xlof the force on the proton?

  A wire lying in the plane of the page carries a cur/6b-g:(hadl 6.o *e sby6)rebq h riocrent toward the bottom of the page. What is the direction of the magnetic force it produces on an electron that sh)chgrl/- ab6(.6 6y*obr:e d qioe bis moving perpendicularly toward the wire, also in the plane of the page, from your right?

  Two long parallel wires are placed side-by-side on a horizontal tablr3gk: dou ivg 2, src20/dg,wce. If the wires carry current in the sc 2,vd ,0/:rurokwdig3g scg2ame direction,

  Two long parallel wires are placed side-by-side on a ho60 9 fye/yrdjwv-g t.hrizontal table. If the wires carry curret 0-69h.gfy yjrw /edvnt in opposite directions,

  Consider two current-carrying circular loops. Both are made from one str2d uecr**2vp hand of wire and both carry the same current, but one has twice the radius of the other. Compared to the madvc**rp e2h u2gnetic 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 mapmeh3u*2ea1qk, v*pg de from one strand of wire and both carry the same current,he*1, m vaeqpp u3gk*2 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 ang fpdy0z * ,* -);yygcohdne0zwle between the loop's magneticny* oc d)0z fy*-ed,g pwy;0hz moment and the magnetic field vector is

  When placed askew in a magnetic field, a c*ujwa * 8fyovb3j )qk*urrent carrying loop that is free to rotate in any direction will experience a torque until its magnetic moment vej)**f 3jkyvau wboq8 *ctor

  What fundamental fact underlies the operation of ga0f2uoa-i :tp2 u,v j(s hk:kessentially all electric motorsg :vsk2ju (k 2htpof,i: a0u-a?

  A circular wire loop lies in a horizontay m 9n1i9c(ubgse:7sj l plane 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 caused by the currents interaction with the m:mgs ib9e 7ysu(cn j91agnetic field?

  In a mass spectrometer a particle of mass m and charge q is accelerat3je:zbhm -/kg er )x,hed 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 mer:hzbe/hg3-)xj,k of the particle in terms of B, q, V, and R.

  A velocity selector consists of a charged particle pasg ct.kr3)hw,er /-6gajzo9ygsing through crossed electric and magnetic fields. The forces exerted by these fields are in opposite directions, and only particles ofkc 9t.hjgoar/r-ge),63zygw 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 a current of 0.60 A is oriented paralle k7 uc0dwi6fc12bx ny(l to a uniform magnetic field of60ucnc wd(bi2y xk7f 1
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a direction czm bu3vj,b4+ jxr ;i61uv6 hgof $30^{\circ}$ 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 straightofzpx)0 sb9/8e: yah *6 mtvml wire carrying 5.0 A when it is placed in a magnetic field of 0.020 T? T)b slpf86zmtmoae*9hy /v: 0 xhe 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 magnetic field . +q9fj,dn krlof 0.10 T. What minimum cujn+f, rklq9d.rrent in the rod is needed in order for the magnetic force to cancel the weight of the rod?

  A stationary proton is in a uniform magnetic field of 0.20 *n8q)mvnmds7adr; + pizgk (2 T. What is the magnitude of the magnetic force ona8mrg;qkdmnd+ 2i()7 pv *zsn 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 dj emg633 i+zy$5.0 \times 10^4 \; m/s$ 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 o3enl(mr 6p i*jf $5.0 \times 10^7 \; m/s$ 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 nosa o g3l6 -fy:+rr(bf;c ul-zxrth 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 s(isep g38yg5g peed 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 os2jhrzc bl,tqfu + /6sp+5a2jf $8.0 \times 10^6 \; m/s$ 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 osw )e81jb-vh cf $3.0 \times 10^6 \; m/s$ 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 cu v/fh z2xgy3v:2r6cabo/s fl)-pl*zl rrent of 25 A. What is the magnitude of the magnetic field at a22b/ frz*yhs3p)6gll-x ocvzf:l /a v distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magnetic thjz8md7vpyn:a h2.8o45yth field at the ground, 10 m th8y8avopj2d ht:z h ny45m.7away?

  How much current must flowp emsg cj znx;ycjhv5/b1)(41 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 is th+k43; 7z n* dtppkxq8g0s6mpz9xb nkle magnitude of the magnetic field due to the wire equa4k kq0z6s pb9n tn ;gzxx*+87d3kpmlpl 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 opposite directiondsqyupbfy(gtp .:1w , ega 225s. They are separated by 40 cm. What is the magnetic field in the plane of t,w b2sdpyg .gp(2 yet:1q auf5he wires at a point that is 20 cm from one wire and 60 cm from the other?

  Two long parallel wires carry cub3n vzl4)wih2n s /b1urrents of 20 A and 5.0 A in opposite directions. The wi wv2ib z)hb/n14lu3nsres are 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 5.0 A in opposit su cx4uz0anb; g4o,.we directions. The wires are separated by 0.20 m. At what point between w44a0s,; cuz bnxu g.othe two wires are the contributions from the two wires the same?

  Four long parallel wires each carry 2.0 A in the same directio28a ( lawx v uf.ba+u7ke/m-stn. 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 t 7.8 (kb/sa- maxfau +e2vluwfield does one of the wires experience due to the other wires?

  Two long parallel wires ch78itaei*oaf )gjm+pd-a+ zf 5 b)+evarry currents of 5.0 A and 8.0 A in the opposite direction. The wires are))*v5d+ga f- f+iijotmz+a8b hp a7e e separated by 0.30 m. Find the magnetic force per unit length between the two wires.

  What is the magnetic field kfk* 1e nm t.my 6dbs1/:x2jagat the center of a circular loop of wire of radius 4.0 cm when a current of 2.0 Am6ft s y j:/k2*kx.ag11bmn ed flows in the wire?

  A solenoid 20 cm long is wound with k*.a au uc6uxmtxtj94ei , h+t2a3pf:5000 turns of wire. What magnetic field is priutmf4aauexj c 3 6+, u*.2t9xp:thkaoduced at the center of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.gm7yb0. jr i1z10 m long and carries a current of 4.0 A. What strength of magnetic field will it have ag17.0mj yirzb t its center?

  How much current must pass through a 400 turn coil 4.0 cm long to genen,:ww8xapdiz65 y*hggo:j t q ioh218rate a 1.0-T magnetic field at the cent1gp5za:6t,8o: igywdw q 2ihxn8*ohj er?

  How many turns should a 10-cm long ro )ig:9k ni*3rqdjb (* 1vdrrsolenoid 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 momecp-j / ag31y/lkddl u.nt of a rectangular loop of 120 turns that carries 6.0 A if its dyucd/1kd/glajl 3 -p. imensions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic field of 0y2me*h 8per yvc 9:-g )1ovajibfo 51/n/pbis.30 T. The current in the loop is 91 rm:eab/2f8 jv5*)yve/- s1nobogypi hpci2.0 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-sect4y;x, o7lc3iw qobkgcim 7 9-nional 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 3.5 T. Th 0f pejmkrig h(9/a4:f z ,lweh93cj.we loop has an awg p0,zj.:e(me/ i 4fwl3h hcf r9kja9rea 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 magy21nukh g e)ujd)m88h +zfd)gnetic field of 0.30 Tn8 duz8 ) j2fuy)kg1d)hegm+ h. 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 field?

  A circular loop of wire of radius 0.50 m is in a vvsrrbcy,o54zh 9 0mj/gx 3v)uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. Whatxs0vv5o)/,byhmz jr3vr c49 g is the magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop of arek(n lllzgm*.o +to6bj p)lf46/s ay1i a $0.25 \; m^{2}$ 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 (charks:p , 3(yk nrb:c/jxvp7p4ikge 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 withq8h)+vsu8e 6 puu) mvb velocity $6.9 \times 10^6 \; m/s$ 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 ofh i(mj 56. xemjgwfp)3 1.0 kV and then moves into a magnetic field of 0.040 T. What is the radius of the proton's resulting orfx.geh3jm( jp6m) iw5bit?

  A proton is accelerated from rest through pclx5t1 ,6wd mdu3oe/500 V. It enters a magnetic field of 0.30 T oriented perpendicu3d/, l1x6cme 5uwpotdlar to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accelerated througv ls4,+ d:ze2eitxnqc +b0pj-h a potential difference 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 und-tvi04z p:lcqns+ je + 2,ebdxeflected?