If the north poles of two bar magnetleldc 27 +kq1hs are brought close to each other, the magnetsh27 dclq 1k+le will

  If the south pole of one bar magnet is brought near the noodz; g;nadz 51 qve03rbz8k1krth pole of a second bar magnet, the two magnetse zdkbz;v;n z qrk83a 51o1d0g will

  If a bar magnet is divided into two e,ye gr7;9;j/ ihtdoewqual pieces,

  The Earth's geographic North Poleo4d 5 l5q-hdkq is magnetically a

  The south pole of a magnet points toward the qn8y*u ;uv;3 otty u-q-0itphelae ;3Earth's

  An electric current produdog f3o4g85cw ces

  Which of the followinsh2tt2avkv7/3 o zbx 4/i 6uiog is correct?

  A vertical wire carries a current straighob l)uj7:+f:a+o::ylc dwax b t down. To the east of this wire, the magnet)w :y++ala:b :lj7bodfu: xc oic field points

  A horizontal wire carries a current straight toward you. From1t 0pmr8lu vj2 your point of view, the magnetic field cauvj201 tmlur8p sed by this current

  A current carrying loop of wire lies *fu -v3x kg(q9k.vkalflat 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, outsik-.xvav9qg(f*l3 kuk de the loop? The magnetic field

  A current carrying circular loop of 7fxkm7f dsleh . j0 2k6.r.ttkwire lies flat on a table top. When viewed from above, the current moves around the loop in a counterclockwise sense. Wha0d.7l ktx2tr.f.e7mhs jk6kf t is the direction of the magnetic field caused by this current, inside the loop? The magnetic field

  The SI unit of magnetic field mfb3gj. q 9m:;fw t.vcxqh1u3 is the

  1 T is equivalent to y8*ckmb.u.jw

  The direction of the force +kma g8bsf(*oeej;g5 on a current-carrying wire in a magnetic field is described*+5 ek s;(g eajfbmo8g by which of the following?

  The force on a current-carrying wire in a magnetic 9 iytn7n a znaw2+k-+cfield is the strongest when

  The force on a current-carrying wire in a magnetic field is equal to zgt(4jckr: f x xhy(-/jj4z(sxero when

  A vertical wire carries a current straight up in a region wher*pd) )/cs6cujqp ,zbp+wzs. fe the magnetic field vector points due north. Wha6spc fc/pjpq )z+bsu.z,d)*wt is the direction of the resulting force on this current?

  A charged particle moves an,zixe r 6ov;fjrdda;.syk * 61d experiences no magnetic force. From this we can concirx, jd1*;ds .a;r6y k6ezfo vlude that

  A charged particle moves with a constant speed through a region where a unifotfvwn g- wa+, qa:d34gn f 5exfd3.0qcrm magnetic field is present. If the magnetic field points straight upward, theqfg f. g 3:eqdxw-,tf+5n3aan0vd4 wc magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constant magnetic field. The magnetic forcy u ;)9 dfqa5c7/pka7 gtpn:lce on this p:k;pgclu7 ) dn qy5acfa9t7/particle

  A charged particle is injected into a uniform magnetic f 1wloix85it:rield such that its velocity vectw5oi tli1:r8x or is perpendicular to the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in a circular vb*7cw p1dzgff,f4n,n m*wn 3 path in a uniform magnetic field. If the particle had been travel g34*fnwn*wbdz ,v,mpf 1 ncf7ing twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e travelw3uz( ur5c(dpuj n ))zs in a circular path in a uniform magnetic field. If instead the particle carried a charge of +2e, the r)un5pj)wzz (u(3 ucdradius of the circular path would have been

  At a particular instant, an er(xj( c5w :y(d,erabt,(l*e cvk9shzlectron moves eastward at speed V in a uniform magnetic field that is directed straight downward. T(,zvd9jec(h 5 a(,rwx yelr cskb(*:the magnetic force that acts on it is

  An electron has an initial velocity to the south but i1ve yk5/an wownjj+r66s b1 5us observed to curve upward as the result of a magnetic field. The direction ork5165nuy 6bwj j/ aen+v sow1f the magnetic field is

  An electron moving along the +x axis enters a region where there is a u42 wughl.v, gxniform magnetic field in the +y direction. What is the direction of the magnetic force on the electron? (.x h,uwl4 ggv2+x to right, +y up, and +z out of the page.)

  The magnetic field produced by a long straight current-car/r q- 6l,eh3dwqav 3nwrying wire is

  At double the distance from a lon7gejrj ua,02pjz xdhn60b . i.g current-carrying wire, the strength of the magnetic field produced by that wire d0n, 2u x z.d.pg jbhr7e6ij0jaecreases to

  Two long parallel wires placed ig8 iolh;dz+ xk /ye;,*jw 07t/sddjhside-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 /g+l/yi7swet,;dzhj* x;08o hji dk d midway between the two wires

  Two long parallel wires placed side-by-side on a horizontal table carry identihhs vegl; xs35)gh q(xr3j*: vcal current straight toward you. From your point of view, the magnetic field at the point exactly between th;ssl3jh 3q5h vvx heggx* :r)(e two wires

  Two long parallel wires carry equal currents. The magnitude of the force ber mwng6f ,0r5 -puy90b6zwi fv9q/xcrtween the wires is F. The current in each wire is now doubled. What irfz0irg q 5m u-09c 6/,rf xpvbn9wy6ws the magnitude of the new force between the two wires?

  A long straight wire c-8k fmesot 8in3j l8g dkw.m4+ra5( ciarries current toward the east. A proton moves toward the east alongside and just south of the wire. What is the direction of the forcew ncrl5d8e 8 f(askg34o.immt k +j8i- on the proton?

  A wire lying in the plane of the page carries a current toward the bottom of the7bwpibp ,f.h6 bl- 6hh rmr6 ljf.xx40 page. What is the direction of the magnetic force it produ6 hmh, j.lp0xpr -ibf bfr76xhl 6bw.4ces 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 on a horizontal table. m + tko6a;6amiIf the wires carry current in the same directioa ;6o mktmi+a6n,

  Two long parallel wires are placed side-by-side on a h 12kepj)4dvnopz16r0 v twx-t1yau6 oorizontal table. If the wio ap-d2p4 v1)t0oer1ux j1w6ykn6tzvres carry current in opposite directions,

  Consider two current-carrying circular loops. Bob 29dz4w zmhz0mv(*etth are made from one strand of wire and both carry the same current, but 0z (m2dmz9h v4bwe*z tone has twice 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 circular loops. Both are made from one kc f89hvvf 0m77mck /ostrand of wire and both carry the same current, but one has twice the radius of the other. Compared to the magnetic moment of to7h 0cm8f97kv/f kc mvhe smaller loop, the magnetic moment of the larger loop is

  The maximum torque on a current carrying loop occu /4,q x/vi(nibt5bzuars when the angle between the loop's mziixqv /u5 bt,(abn/4 agnetic moment and the magnetic field vector is

  When placed askew in a magnetic fiel6o:c):p qrsx. ii1lk)dy9i zm d, a current carrying loop that is free to rotate in any direction will experience a torque until its 1 6ix :roc: m)qikplys)dz.9i magnetic moment vector

  What fundamental fact underlies the operation of essentially all electric jw2x- q;9hmgw8oo1fq;st g d 0motorsoqwd2g;hm0t;fq j-9sg x o8w1 ?

  A circular wire loop lies in a horizontal plane on a table and carrit p, 7ebnu )xb 3gl3tp-i4dal6es 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 pap743ld )xgl3 6-btin et,buhorizontal. 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 is accelerated throuzn;,7 pabjpkb8r i2/ igh a potential difference V and allowed to enter a magnetic field B, where it is deflected in a semi-circular bbirijk p8n72zp/ a,;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, and R.

  A velocity selector consists of a charged particle passing t6nn r m 1njpg,vd1 +it0g2c;q rout9+jhrough 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 sh6o n ;dirpj2v9j1gm1+c 0rqnt ung+,tould the electric field point?

  A 2.0-m wire carrying a current of 0.60 A is oriented parallel tosd4d9rf n ,;o:)xdsg i a uniform magnetidio 4gr);s ,fxndd9s:c field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a direction fxtlwsopu 0a d9rd ,j4d23v/ )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 strb5w/qaock ;6ut, dz 5-wori u+aight wire carrying 5.0 A when it is placed in a magnetic field of 0.020 T? The wire makes,5 rb5-ta ouk/; dwucqiz6wo + 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 k8z(jl42oa b2gl8auw /x qvq8u g and is in a magnetic field of2/u4qx8l boqj2 g av8w la(8uz 0.10 T. 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 a btrw4l;l:d(c9j1ebng3i s / uniform magnetic field of 0.20 T. What is the magnitude of the magne: sejb13 wdn/acr l;gb94tl (itic 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 wie+g g )hvgf, cv5vs:-gth a speed 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 o g :obt*x(vf1$5.0 \times 10^7 \; m/s$ 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 sp 7p4ft ,n5agqy cyyxk95vvw(cvj81 u. 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 with4;yltory pg s 1 cj,.lgk39w.e 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 spnm g* kxd+0/-1pf,7qa+tt 4 zscvr2/ nn cjnleeed 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 1m4/jg0+7h kt7irg xr cg*kgn$3.0 \times 10^6 \; m/s$ 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 c wg(h/cgpg ))qurrent of 25 A. What is the magnitude of the magnetic field at a distance of 0.15 m from thpq cg wg(hg)/)e wire?

  A high power line carrying 1000 A generates whatmk( 5:1jbace5z k 1soz magnetic field at the ground, 10o5 z: (k1skz1j5cmbea m away?

  How much current must flow f1 lb()bct+vn mtn2audo3f /e4or $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long straight7ysnyi-pr 5bi)/ddl *4m8pcyb s( 3fy wire carrying a current of 5.0 A is the magnitud3i-f7dl*n8yc ydbb p(i)4y my/5ss rpe 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 rx2vi3f mxs w;0) zbp+carry currents 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 that is 2r ) pxi0f2 3mszwb+vx;0 cm from one wire and 60 cm from the other?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite directij0e lu q9rrb7yv-vx(:i:i (mqons. The wires are separated by 0.20 m vrb-7(0y q:(:luxm q9iiv rje. What is the magnetic field midway between the two wires?

  Two long parallel wires carry currents of 20 A +dhkdi- upv22sry;dk- g.b*y and 5.0 A in opposite directions. The wiresk-vpdbd. r-+dkgs y2*h ;i2yu are separated by 0.20 m. At what point between the two wires are the contributions from the two wires the same?

  Four long parallel wires each carrmid,u2umphhm knr.)+:l( fg)y 2.0 A in the 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 experienc2mf.p)uhn (+kidmru lg :hm),e due to the other wires?

  Two long parallel wires carry currents of 5qz y*x4b1/eec .0 A and 8.0 A in the opposite direction. The wires are separated by 0.30 m. Fin ecqe/zx y41b*d the magnetic force per unit length between the two wires.

  What is the magnetic field at the center of a circuqaeh,g ouge,.i cj1 +5lar loop of wire of radius 4.0 cm when a current of 2.0 Ao cq.1g,hee5u+ iaj, g flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns ytozw9r b5k2, of wire. What magnetic field is produced at the center of the solenoid when a by r9wo 5t,zk2current of 10 A flows?

  A solenoid with 500 turns is 0 r ,8(wgw8 x.cpfwq,zet+*fis.10 m long and carries a current of 4.0 A. What strength of.i*sw(z 8q8,w trw+cg ,xfpfe magnetic field will it have at its center?

  How much current must pass through a 400 turn coil 4.0 cm lonqd mf (/5b7dbtg to generate a 1.0-T magnetic field att 7dm bqbd5f(/ the center?

  How many turns should a 10-cm lon6fhhm(nq *;s8ox0 ini g 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 120 turns51f x7qhf(xhw2vi p+m that carries 6.0 A if its dimensions q7(v5m+fi hxhw12pfx are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform mb)oh.u b3c;:3 j-om m h.fk2wwrat n9vagnetic field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the pcnw.:jfb .t)3muh -h 3 2ovbawko;r9m lane of the loop is perpendicular to the magnetic field?

  A circular loop of wirf6fh6a *vy a7i73+ycks l7 jlre 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 is in a magneof np(/tj mm 3:ysvx-(tic field of 3.5 T. The loop has an aryp tsv(n (x:3/mjm-ofea 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 magnetic field 9kke*v8y63 go-hmz yk 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 thek*6 yvmz 8gyohkk -39e magnetic field?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic fie(+2rg)zc, (gmm sgxnuld of 0.30 T. The current in the loop is 2.0 A. What is thegc(z,(m2xs)nurgm + g magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop of arwydacez2 a)0 w549ajjea $0.25 \; m^{2}$ 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 (char;hm ,fxt* 0mvige 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 wirvdcmja4ds,) iyn(4a9y p.p.u*z,)quz tu7 l th 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 of 1.0 kV and then movesr-aa 2 bu,kwh3k1gwa;unz+xhwb3,o o q:v60 m into a magnetic field of 0.040 T. What is the radius: na+,1h0z6korwg a2u-3 ;wq b3m kwua,xvb oh of the proton's resulting orbit?

  A proton is accelerated from rest through /p3bhtcf ni b:-fu+r y3w64f-qd.gny 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Determine t- -3rnwbb 6u4t+g/yncq f.yf3f id:hphe radius of the path it follows.

  A beam of electrons is accelerated through a potential difference of ev + xv8)jq;d-ahtn/s10 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 undeflec)8-ajv e xhs;/tvqnd+ ted?