If the north poles of two ba+ q,w t39ufv(stu d5qgr magnets are brought close to each other, the magnets9q (uu3+td ,fs5wg vqt will

  If the south pole of one baclqmk9 (y.2 qzr magnet is brought near the north pole of a second bar magnet, yqc.q(mkz92 lthe two magnets will

  If a bar magnet is divided into two 8-xab :0/ bxb1g 4nk 8tgdoemyequal pieces,

  The Earth's geographic North Pole is magneticaes4doq73-e7g rm y8ou- la+m a4hj-*yindp 1rlly a

  The south pole of a magnet pon * -f:wbetw-vints toward the Earth's

  An electric current prodtxget144zab 7 ju,ddk.*mk5f uces

  Which of the following is correz0w1e v guvjfy/*m2 ll90u1z zct?

  A vertical wire carries a current straip 6cqpnw)j:6r sx x)-ight down. To the east of this wire, the magnetic field points: pcr6w) si6-xn)qxjp

  A horizontal wire carries w7p;m;n7u,3u insjq4nqvv5o a current straight toward you. From your point of view, the magnetic field caused by this current53vqmu,n sn 7o ;4u jwp;i7nvq

  A current carrying loop of bwz2l7 .wlb0 rfg/ y0kwire 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 magnetic field caused by this current, ouz0 gl0bl7wf.y2kbr /wtside the loop? The magnetic field

  A current carrying circular loop of wire lies flat on a table top79 c0lawyl;jd . When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic fieljay 7 llw9;c0dd caused by this current, inside the loop? The magnetic field

  The SI unit of magnetim6 :pr8 cjxwu)z gn,(bc field is the

  1 T is equivalent to24i puzjqn/7q 6ffg/9e7dz st

  The direction of the force on o 6qxwg9 g5r/ra current-carrying wire in a magnetic field is described r6 g5qwr9go /xby which of the following?

  The force on a current-carrying wira:k x(lhmnr.fa8*i2 u e in a magnetic field is the strongest when

  The force on a current-carrying wire in a3e g wnr7 2zt.9rvu+ye magnetic field is equal to zero when

  A vertical wire carries a current straight up vpm3(ar.c r1i in a region where the magnetic field vector points due north. What is the direction of the resulting force on thisr pmrva c(.i13 current?

  A charged particle moves and experiences no magnp62 +-g: mvdjaa1tsfnetic force. From this we can concla6 s -2v1ga:jtpmd+n fude that

  A charged particle moves with a condsf)v.qu .ul(.rg6 avlx ,dj/stant 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 particle,lr(f/ 6.adusd.l qvvg) jx u. moves

  A charged particle moves across a constant magnetic field. *z+eub 3-2jq) gue(* t bsmpyr The magnetic force on this partqp+)j( 2u *bm-sgb3tz eey*u ricle

  A charged particle is injected into a uniform magneoi7gy nri4;a) k9/t-q(7ha 7rtv azip tic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring the particle's weight, the pa7qh i tk 4g-9vz;ia)r t(ai y7apr/no7rticle will

  A charged particle is observed traveling in a circular path in a una lo0o-54acw8) c )yc vj6o(cunyk( jtiform magnetic field. If the particle had been traveling twice as fast, t6yj-clyoaon(c)to5w)j4 8 cvu( a0ck he radius of the circular path would be

  A particle carrying a charge of +e travels in a circular path in a uniq98wy,lv2qs3q jp 5 jzform magnetic field. Ifwqy 83js5q qzv 2lj,9p instead the particle carried a charge of +2e, the radius of the circular path would have been

  At a particular instant, afgaylual4- l.-lc a69 n electron moves eastward at speed V in a uniform magnetic field that is directed straight downward. The magnetic force that all.lg4a-u 9-6lyaa fccts on it is

  An electron has an initial velocit*xg(i sv r )w8ziga* xtkfj,4*y to the south but is observed to curve upward as the result of a magnetic fi*,z(* 84axrfg)kjs w xt*givield. The direction of the magnetic field is

  An electron moving along the +x axis entc,mzc9gahr y:d04v e 3ers a region where there is a uniform magnetic field in the +y direction. What is the direction of ta g,ehcz:y d4c39 vmr0he magnetic force on the electron? (+x to right, +y up, and +z out of the page.)

  The magnetic field produced bmy39gq6cy ff (y a long straight current-carrying wire is

  At double the distance from a long current-carrying wire, the strength of 6g,qm1xfypm xe7 5;i(z:lp cm the magnetic fi1g,xi ezpx:ym qpm5c f67m(l;eld produced by that wire decreases to

  Two long parallel wires placedf5 laetbv/+z9*o fyg 3 side-by-side on a horizontal table carry identical size currents in opposite directions. The wire on your right carries current toward y/go flav*zf5 9b+3 yteou, 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 hoiki pv 76/cvj,iy) 7dvrizontal table carry identical current straight toward you. From your point 6d i)7ikvy pc,v/7vjiof view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnitude of the fgh5h4z0ab t4vk9.f qaorce between the wires is F. The current in each wire is now doubled. What is the magnitude of the new force between the two wires?a t5ag4.4f kbhv90qhz

  A long straight wire carries current toward the east..s9kb ayw6 z3v A proton moves toward the east alongsik9.v w 6sa3bzyde and just south of the wire. What is the direction of the force on the proton?

  A wire lying in the plane of the page carries a current tow:uz68mt yzv 6h7tlv6 lard 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 of th6lv6vh t7:lz8u ztym6 e page, from your right?

  Two long parallel wires are placed side-by-side on a horizontal table. . yrw.0hht2wzl17lzd If the wires carr dh027z wlz..ywt1h lry current in the same direction,

  Two long parallel wires are placed side-baqa+k hsz 5m-bq.jm +2y-side on a horizontal table. If the wires carry current in opposite direcs zmj .2+qk+bmq -5aahtions,

  Consider two current-carrying circular loops. Both are made from one strrq*0 w0 umxc,l :jq(edand of wire and both carry the same current, but one has twice the radius of the other. Compared to the magqw00j, um*dc: xqr(lenetic 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 from onemuy mkcq qm f.*,0v*5e 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 magnetic moment of the largef mmquev05c*k., q*y mr loop is

  The maximum torque ozg:5y -k+fg16i t5c2t.-m rvf2hxw jw jh0sgyn a current carrying loop occurs when the angle between the loop's magnetic moment and the magneticy5gg- jfj.t5:06r tfwi x1vhgsc w2k- 2mhz+y field vector is

  When placed askew in a magneqfcp4b th48e9 lbslarv 7j(09tic field, a current carrying loop that is free to rotate in any direction will experience a torque until its magnetic momenv blr78 (p ch9b4s0l9qajetf4t vector

  What fundamental fact underlies the operation of essentj *szl(6l;l x)yhdj7 xially all electric motors(hj 7x jllly)6 ds*;xz?

  A circular wire loop lies in a horizontal plane on a table and carries current i,(p20waf:so4o llb cmn a counterclockwise direction when viewed from above. At this point, the Earth's magnetic field points to the north and dips below the horizontal. Whic wcls0,ofo 4b2:(m palh 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 5(2 yy: gamzpgcharge 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 inm2a gp(yyg5 z: terms of B, q, V, and R.

  A velocity selector consists of a charged particle passing throughjd 3 squ8z beayti *8h 1ykqt*hn+1(7q 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, d hq+1znj7*3qeb ys(8yhiaq 81tuk dt *isregard 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 oezjleo3he/(z* *4 bpon :ya:qf 0.60 A is oriented parallel to a uniform magnetic field b/(*yzq:3*hp e znj:ae 4oloe of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a curregt080 rdxp ,m e112abyhi s4qqnt of 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 straight wire carrying 5.0 A when it is placed -p :rot-5 fwbmin a magnetic field mt-:-5 bfoprwof 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 fp.d2), ) ktgou3dxhz,, hggdmass of 0.050 kg and is in a magnetic field of 0.10 T. What minimum current in the rod is needed in order for the magnetz3ho,)k.pdg g 2,ud),fh tgxdic force to cancel the weight of the rod?

  A stationary proton is in a uniform magnetic yjf z3(em6f s(io tpw1vl dj.gz,g1/5field of 0.20 T. What is the magnitude of the magnetic force on the protonjtdgys g5wz v z1oep3ljifmf,/(.(61?

  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 sf q8bw:6(hjsy 59og etpeed 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 of;: s+a-;mych h8kf +huo:ef ps $5.0 \times 10^7 \; m/s$ 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 dutrlz m-.+ulawedq9xa6s g 5z v-zf g6pf6+5x1e 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 v gn(0 d+ld:hya 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 speed q;ke xf)cyb 6p. ,pt7mocn .m,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 speedh- fsq71 u8k1 wfgefb9 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 3 f d.kt*.ptlrx:x 2kfa current of 25 A. What is the magnitude of the magnetic field at a d pl:.dfttxk*kf.3r 2x istance of 0.15 m from the wire?

  A high power line carrying 1000 A generates wcehp8l/c9 zdb7u0 0le wlg(e :hat magnetic field at the ground, 10 mu9 ldbc:ez8/00e(geclhpl w7 away?

  How much current must flowuf*iujpe2 z 6v* +zsn( 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 x;ub74mywokbbyz 42l,9 l3xq the magnitude of the magnetic field due to the wire equal to7xbml,424 wql byu;b3oxzky 9 the strength of the Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wifh6 fyj ng95-nres carry currents of 10 A in opposite directions. They are separated by 40 cm. What is the magnetic field in t j5h f-6y9fnnghe 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 0ve .d3fy)ogv. navt05.0 A in opposite directions. The wires are separated by 0.20 m. What is the md3v0 e0y .nvg.fa) ovtagnetic field midway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 Aqyp.* jx1p9 xz in opposite directions. The wires are separated by 0.20 m. At what point bet9 yx*xjp.pq 1zween the two wires are the contributions from the two wires the same?

  Four long parallel wires each carry 2.0 A in k-5okwg t-s: zb(c8cg the same direction. They are parallel to the z-axis, and they pass through the corners of a square w tgcgbck (s- 8-o:5kzof side 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 curreng)f;+zki ga) nts 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 length between the two a +)i g;ngfzk)wires.

  What is the magnetic field at the center of a ci mnh6,,u(mkkjcto 3s1 rcular loop of wire of radius 4.0 ccs,(uo1m ,3jt hkn 6mkm when a current of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. 9h-y376 pxtepm-ly mx What magnetic field is produced at the center of the solenoid when a curren- yh 7x t-mpl6emypx93t of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carriey- of,zg ncbx37*v)-,pb wao( s8srci s a current of 4.0 A. What strength of magnetic field will it have*7cnbz3,bso,w( pga if -rv xyo)8cs- at its center?

  How much current must pass through a 400 turn coil 4.0 cm lonm +q slkc2s ,996uf3x+b bdufvg to generate a 1.0-T magnetic field at the squsd+ mku,6bl9fcfx9b 23 +v center?

  How many turns should a 10-cm long solenoid h n// s0rs;5qtoh *9y soh,da3wd8y jcjave 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 6cqqi. + 0;0g capzj9fx.0 A if itsjax9;.qp0 cg 0z ci+fq dimensions are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic fiw0x0 w ov:gk1aeld 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 pew0xka1g ov w:0rpendicular to the magnetic field?

  A circular loop of wire of cross-0 f turxmbcuvm3+;w. 1sectional 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 mpq7du3dk7 (vx-h ll)ynnd4yve 9 c/*A is in a magnetic field of 3.5 T. The loop has an area 3v4*(9ded/ lnhu7dym - vc7xqky)lpn 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 magne 4xi lthmfzq1d-);vk /tic field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque whenmz) fdxvl;/qkh1i-4 t 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 m6 a+ n,m3v2kc1mrzvaaagnetic field of 0.30 T. The current in the loop is 2.0 A. What is the mam ,zma+r3a v 1ka2c6vngnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop of zxmq j)jsvg/u.oxt/jn-,n50 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-chazv,3ksfcc aqb 63 fwmcw:o-1c 1t(lj. rged 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 witrb ;x 9/sm2r.n tad(fkh 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 potentia r6dc2r7im)c )2ux slxl of 1.0 kV and then moves into a magnetic field of 0.040 T. What is th) udxc lr7mx2r2ic)6se radius of the proton's resulting orbit?

  A proton is accelerated from rest through 500 V. It enters a magnetic field odxz - )16 0+gvkdofmhhf 0.30 T oriented perpen6m0+ dh- z h)d1vfoxkgdicular to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accelevuhnv;d3vu 2cv p7a 0)rated through a potential difference of 10 kV before entering a velocity selector. If the B-field of the velocity selector has a vv27vcvpu h)uv nd;3 a0alue of 0.010 T, what value of the E-field is required if the particles are to be undeflected?