If the north poles of two bar magnets are br2gz2js(g nceexg6)2 d) e e2qeought close to each other, the magnetsz )s2dg) cge6enq(ee2 g2x ej2 will

  If the south pole of one bar magr e;d f :mwx2ht59 j39gliky4cnet is brought near the north pole of a second barmet25h9f9jg4 wcl3; k xdiry: magnet, the two magnets will

  If a bar magnet is divided into tww/ ;*qtwx;ku 2+jmo j1/ncsuiu9dk- mo equal pieces,

  The Earth's geographic North Polo6 rorzb 6c;:fe is magnetically a

  The south pole of a magn,lm/x.k ek.6vdma /g ket points toward the Earth's

  An electric current pr(ek1u: pb vu1 -o+po7qcdtg.foduces

  Which of the following i. ffy e,:ooks4s correct?

  A vertical wire carries a currea b/9 ezwf:2sgnt straight down. To the east of this wire, the maseg z9:/ a2wbfgnetic field points

  A horizontal wire carries a current straight tal:m .-z7qvdg oward you. From your point of view, the magnetic q 7 mgdlza.v:-field caused by this current

  A current carrying ldd ko-j)twsz.xrp *t3qf/x*o7t1 q1hoop of wire lies flat on a table top. When viewed from above, the current moves around the loop in a counterclockwitt otpwfh/ xjk*.3sr d*z-q)dqx1 o1 7se sense. What is the direction of the magnetic field caused by this current, outside the loop? The magnetic field

  A current carrying circular loop of )7l pvycu7)tcwire 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 curreuc 7vlc)y7) ptnt, inside the loop? The magnetic field

  The SI unit of magnetic field is thexk40 9gzb/in 0xr.lan

  1 T is equivalent tob 8s)ozvsr 6;/bdj:ay

  The direction of the force on a current-carrying wire in a magnetic 7s;xigs jswaf--ubkvj 7qu :o2;qy h.z3yk7 1field is described bbwo k-q 3y7k-z uqvashiu:2fj;s7.j;1syg7x y which of the following?

  The force on a current-carrying wire in a magnetic field ix-5lg u59 lkvss the strongest when

  The force on a current-carrying wire in a magnetic field isv 9 j;+;a4vdgsqxb)hnm cu 6a 9ms2lq1 equal to zero when

  A vertical wire carries a current straight up in a:af v(x2 a2l(fg+rtha region where the magnetic field vector points due north. What is the direction of t g2 f:a( +hfvl(2rataxhe resulting force on this current?

  A charged particle movef7e3mlf 0n m0xax e(k;s and experiences no magnetic force. From this we can coe03(ml7x ;fmnk0e xfa nclude that

  A charged particle move7ay ew(6av0j0bl *df8 o7amevjcx (y)s with a constant speed through a region where a uniform magnetic field is present. If the magnetic field points st80aywae )x6 ycdvfa0ml7*( b 7j (voejraight 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 mag,-at/y+lvn 1 k1icmdwnetic force onv kitlan+cw-/1 d, 1my this particle

  A charged particle is injected into a uniform magnetic field such that q o121(f6s4u nycwgjeits velocity1s6j1 c24yequw(f o ng vector is perpendicular to the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in a ruv3h t5 - a4jr(gud*t 1hq8kjcircular path in a uniform magnetic field. If the particle had been traveling twice as fast, the radius of1 rgutu5r-jhvjtkdh (q a4*83 the circular path would be

  A particle carrying a charge of +e travels in a circular path in a uniform magnetp1j;8gx* .)ghsce xd tic fe18 xjxsg .;h*gpdc t)ield. If instead the particle carried a charge of +2e, the radius of the circular path would have been

  At a particular instant, an electron movesclw)l9; ok9tl p- :agg eastward at speed V in a uniform magnetic :lgw o gkla;lt9p9c-)field that is directed straight downward. The magnetic force that acts on it is

  An electron has an initial velocity to t3xo p:ws- pv:f 18vdm4n2rjqr he south but is observed to curve upward as the result of a magnetic fivr:womr f-xsp4nqp3 d2:j8 v1 eld. The direction of the magnetic field is

  An electron moving along the +x axis enters a region where there is a undhaq+i;n6z dt5:p:n aiform magnetic field in the +y direction. na+ipd:65qdat:;z hn 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 producu alq;1t7gk/ yhi-p 6z w0y9jded by a long straight current-carrying wire is

  At double the distance fj00t /b a6h9buxke1fy, flbx 0rom a long current-carrying wire, the strength of the magnetic field produced by that wire decreasexuf 0e6tkh,90/xf b 01bjbyal s to

  Two long parallel wires placed siee2r3 etj e5-1u kys7ide-by-side on a horizontal table carry identicare 2ek1573u ij-teysel 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 the two wires

  Two long parallel wires placed side-by-side on a horizontal table carr8ok f3k+ ao6pwy identical current straight toward you. From your poiw83p6ofao kk +nt of view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnitu5i3 ewg6dog2v de of the force between th2ie6g w5od3vg e wires is 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 current toward the east. A proton movegc fj++cky 9f5s toward the east alongside and just south of the wire. What is thec g5+9fkyf c+j direction of the force on the proton?

  A wire lying in the plane of the page carrg2 +nivf)g lf.ies a current toward the bottom of the page. What is the direction of the magnetic force it produces on an electron that is moving perpendicularly towa.ggnlv+ff) 2ird the wire, also in the plane of the page, from your right?

  Two long parallel wires are placed side-by-sidee/ 79y.byinwwt/ b5sl on a horizontal table. If the wires car y5/y7 l9iw.bbste /wnry current in the same direction,

  Two long parallel wi eya l v91z7xrl.,v+s6vybtnt2w9(ifres are placed side-by-side on a horizontal table. If the wires carry current in oppos1ty2 vv+itv9zxe br l9l7s. (w,ya fn6ite directions,

  Consider two current-carrying circuldlw6xwt 96t7g2;r e;yzlyjhdy/9x ( nar 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, the magnetic field at the center of69 lhxxyrw(g92 ; dlj;6 et7yw/dyntz the larger loop is

  Consider two current-carrying circular loops. Both are made from one strand o/ngfgqwl)cq k ) i9y)+o u,ob:f 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 largequ bi/ykcgg f w,9q)):n o)ol+r loop is

  The maximum torque on a currenfmgf 2ds h- t f:v9d3yjg)c0+ht carrying loop occurs when the angle between the loop'2 fhfd)dyj f 9gv0hc-:3mgs+ts magnetic moment and the magnetic field vector is

  When placed askew in a magnetic field, a currentdaega * i5bv9se+:xs0 carrying loop that is free to rotate in any direction will experxs g+ebv ea:95*dias 0ience a torque until its magnetic moment vector

  What fundamental fact underlies the operac: 969rbejh7kxpou o 7tion of essentially all electric motorsec ohk 7x97:6u o9rjpb?

  A circular wire loop lies in a horizontal pla):v6-ngpcwa ane on a table and carries current in a counterclockwise direction when viewed from above. pv:6a can-gw) 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 is accelerated throughn96 h4;a bo taxn/us;7um-ha q 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 partimaxua hq/hb4u s a9-6 ;otn;7ncle. Derive an expression for the mass of the particle in terms of B, q, V, and R.

  A velocity selector consists ofanhp ;3u o68xn a charged particle passing through crossed electric and magnetic fields. The forces nnpa8h3 uxo6; 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 point?

  A 2.0-m wire carrying a current of 0.60 A is oriented parallel to a uniform magns e7y/dtvix0z6: xxm)e 7 avg6/p/dntetic fiel xs 7)z/:iedv/p0g de ya/xt6x tv6mn7d of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a directio; ts 4bcd8nu g9ftyk3+n 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 strai vjs*)u4+ a*j emubafd*ylo32 ght wire carrying 5.0 A when it is placed in a magnetic field of 0af+u3ajl 4*y2b *m soje*dvu).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 mass of 0.050 kg and is in a magnelq 7olnr )/iag,9ilb.tic field of 0.10 T. What minimum current in the rod is needed in order for the magnetic force to cancel the weight of the iag7r)9lbn. iql ol,/ rod?

  A stationary proton is ae,-x ohw.kv(8l4f:cedx ,br c7 mlg+ in a uniform magnetic field of 0.20 T. What is the magnitude of the magnetic force on the p:xcfo(w4b 8.7h vk lx,lmrgdc-e +e,aroton?

  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 wiqy2 ew n1o8bo2th 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 o)ky+xr6c aybi./fcu , f $5.0 \times 10^7 \; m/s$ 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 norrclge*7lcpu 3s81 ;r 2q:iq3xrb8zu q th 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 with8w2ss(jvk64 5iho nmt40iwhc 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 speed of +fexoxk k+ 1y9$8.0 \times 10^6 \; m/s$ 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 k .caq8 i /c:,balrjk:$3.0 \times 10^6 \; m/s$ 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 current of 25 A. What is the quu*bcu i5-65howy3x magnitude of the magnetic field at a dista*iu-w3 h5uqbx6o5yuc nce of 0.15 m from the wire?

  A high power line carrying 1000 A gen-uof 7mx 3rna3erates what magnetic field at the ground, 10 rnxom -733 afum away?

  How much current must flow for 6c p* m ,cm+pf7m+rwdxau:g3t:lap: a$1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long st 68ijvavkuldu 8z7 8u.,r)jacraight wire carrying a current of 5.0 A is the magnituuujv c d urkzjli76a8a,)88.vde 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 ,vi :qj ;: hflol dj5mm5:vggcwn64(w 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 20 cm from one wire and 60:m n5g mcv 6hoj(5fwl il:;: w,dj4vqg cm from the other?

  Two long parallel wires carry currents of 2b0dr fs* ptdi--i6kg()j8 zwo0 A and 5.0 A in opposite directions. The wires are separated by 0.20 m.0w*pfro-i g8ziddtsb6j k( )- What is the magnetic field midway between the two wires?

  Two long parallel wires carry currents of 20 A an tbk,)f* w b;v+os0acu z7(cy*fw ; sr64boqngd 5.0 A in opposite directions. The wires are separated by 0.20 m. At what point bero wzf;s,u6gcoy fb )q bv*an;c+0k*st4 w7b (tween the two wires are the contributions from the two wires the same?

  Four long parallel wt 1ffh fco2m3,ires each carry 2.0 A in the same direction. They are parallel to the z- ffom,13ch2ft 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 experience due to the other wires?

  Two long parallel wires carry currents of px co2/g ao(+m5.0 A and 8.0 A in the opposite direction. The wiresxc(o+aom /p2g 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 circular loop of wires/.+vu/ izger*tw 4dlx6k 7oz of radius 4.0 cm when a curreug /r.lsd e4vx tz ko76wz+i*/nt of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 tux n-0/5 yn-/jm7pzgikh.x jrorns of wire. What magnetic field is produced7.m0 5x n-k- j/x/hpz orinjgy 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.p3aep 2281shhop8t i 4y: bspf What strength of magnetic field will sb pph4et2pi:y88 opf3 hsa2 1it have at its center?

  How much current must pass ii +5gln; nn8m /w ejhy:.4mnrthrough a 400 turn coil 4.0 cm long to generate a 1.0-T magnetic fi hrj. 8 5:n4imwgniy/n;eln m+eld at the center?

  How many turns should a 10-cm long so m(o2s2 -xwm*k h -t5aoopgxh0.ss -zfp9q6cklenoid 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 turns that carries n 47a st;lc(kn6.0 A if its dimensions are 4.0 cm xcts;7 n(ka4nl 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic wlr1/w2qu4z5 4rjxhe field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when/wjuz2 h1erl qrw5x44 the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-s ghju:*b.m f22ssh8vs1 mkp3 aectional 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 Ay wh 51 890rotay6vgp6fol8cg is in a magnetic field of 3.5 T. The looyf9t5 or1gco 6vy06lgaw 8p8hp 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 magnetic field of 0.o v30*9xw,yl6rkx m s(rslx l.30 T. The current in the l0(ryxm3*sr.,9 s6 lxwoklvxl oop 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 magnu558 9b,lmxl *uqbr rsetic field of 0.30 T. Tusb5 q9rlurlm8b* x5,he 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 wire loop of g)cs aizku5yex9:a +5 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) hmh- dk.apkp0g (cy(0f 62o ifb o9t:svas 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 veloc-mafo1x wtcmg(xxr. .r1n980 (pwx ynity $6.9 \times 10^6 \; m/s$ 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 maq)dbn 7+7 cf;faoy u3egnetic field of 0.040 T. What is the radius of the proton's resulting orbit?an q;3)u fyo 7dfbce7+

  A proton is accelerated fromc0nvl 9eu2a a0 rest through 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Determine the v20c0 ueaan9l radius of the path it follows.

  A beam of electrons is accelerated through a potenw.r uf b22z *zgv4ug;xtial 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 aru4.u2;z *bz2 gvgfx wre to be undeflected?