If the north poles of two bar ltq(j*st0ai 8wvd-/ nmagnets are brought close to each other, the magnets willl-/(jt8tnv*0 dwa qi s

  If the south pole of one bar magnet is brought near the nk(r ;rqenckd u6w84 2north pole of a second bar maqk4;8deknwuncr (r62 gnet, the two magnets will

  If a bar magnet is dividezeed(9b, g5 v,sergb(rep- lk9s9ca 8d into two equal pieces,

  The Earth's geographic North Pole is magnetice.w/ dnp(yn +r7hm xk2ally a

  The south pole of a magnefq5 /k-bfy(lmox8z, bt points toward the Earth's

  An electric current produf*o i*. yu5wsdces

  Which of the following hp2y*gh k)7vq ) ,wze4 aq:5hd/qwvj lis correct?

  A vertical wire carries a current straight down. To the dl , (vg.nj967nznooi east of this wire, the magnetic field poid9 g.n(i,7v6lzojonnnts

  A horizontal wire carries a current straight toward y8mf)k pxyba+c- l x(s)ou. From your point of view, the magnetic field caupfc)sx(a)+kb my-xl 8sed by this current

  A current carrying loop of wire lies flat on a ijrl*1t-zz ;vtable top. When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnv l*tij-zz1;retic field caused by this current, outside the loop? The magnetic field

  A current carrying circular loop of wire lies flat on g 9xs- wo8bfq08(jbgxa table top. When viewed from above, the current moves around the loop in a counterclockwise sense. What is the dio(s9-xq8xfjbw 80 ggb rection of the magnetic field caused by this current, inside the loop? The magnetic field

  The SI unit of magnetic f4,3ve x bky6fwield is the

  1 T is equivalent togtavpd4h- rj 32u ,(t5y fvndvmqe2) 17o )mkw

  The direction of the force oye0 :.rmg-nddk 1(p rb1s5 jsqn a current-carrying wire in a magnetic field is described by wrnsje1ys(kd-5m :1r0.g qpdbhich of the following?

  The force on a current-carrybxk7 ;ssq6 3fring wire in a magnetic field is the strongest when

  The force on a current-carrying wire in a magnetic field is eqig01w ;muknqu8)z9 ed ual to zero when

  A vertical wire carries a current straight up in a region where the magnetkv:y/:e bvg0qic field vector points due north. What is the direction of the resvvy0/k: : egqbulting force on this current?

  A charged particle moves and experiences no magnetic8yf xzl0i80 cy force. From this we can conclude t zlyi8 yx080fchat

  A charged particle movete6.)) g0dl z5ipz nbis with a constant speed through a region where a uniform magnetic field is present. If the e.ip z6tdn0g5) )zl ibmagnetic field points 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 magno9 1gl77 xwukqetic force on to7xk luqw7g91 his particle

  A charged particle is mgn99 qe6z(zc injected into a uniform magnetic field such that its velocity 99g(z nmc e6zqvector is perpendicular to the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed travelro2ty ai, p+6h x8l:soing in a circular path in a uniform magnetic field. If the particle had been traveling twice as ,txhra:isol6py+8 2ofast, the radius of the circular path would be

  A particle carrying a charge of +uosmop,8,e 9 hdxka 8++xy 3sue travels in a circular path in a uniform magnetio+,uaxsk3mh suo8,py+ ex98 dc field. If instead the particle carried a charge of +2e, the radius of the circular path would have been

  At a particular instant, an electron movesx5yk p suy0n(7 eastward at speed V in a uniform magnetic field that is directed straight downward. The magnetic force x 0uy7snkp(5ythat acts on it is

  An electron has an initial velocity to the south but is observed to curv3ya1w /avlu)hwj9 u0ue upward as the resula)3vw/yl uh auw9j01u t of a magnetic field. The direction of the magnetic field is

  An electron moving along the +x axis enterspalw,p* 1zk- dvtho)s01:hn x a region where there is a uniform magnetic field in the +y direction. What is the direction of the magnetic force on the electron? (+l o0 *nspwtv1d1x:z,hph k) a-x to right, +y up, and +z out of the page.)

  The magnetic field produced by a long straight current-carrying wire w5dbh -(zi.a0gzkqn s.nf/2xis

  At double the distance from a long current-carrying wire, the strength of be1,yk/sjbw8ldq lb,/y / q y9the magnetic field produbyk8 y, ,swby/bj ll/1edq9/ qced by that wire decreases to

  Two long parallel wires placed side-byxtumd sc9 9 rioyz/1;(-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 fier9cisy;m o1tx9 ud(z/ld at the point exactly midway between the two wires

  Two long parallel wires placed side-by-side on a horizontal table carry ides b9g*tt k 49/rudv/ r-h,znwgntical current straight toward you. From your point of view, the magnetic fiewr9//d g,bk t tgu9hn*s4rz-vld at the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnitu3/)e+hmfpy)i1 lgji l ao5cdzu5x)3yde of the force between the wires is F. Thea ljh5i e )lx33zm5) + 1)po/ifgduyyc 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 moves toward;roxfz4 1*mwt+hzad, the east alongside and just south of the wirh4,z*xzmw+ a 1do ;tfre. What is the direction of the force on the proton?

  A wire lying in the plane ofn -8fz1dhlc ,gb5x 5uf the page carries a current toward the bottom of the page. What is the direction of the magnetic force it produces on afu5g-cxb ,z5 1nlhfd 8n 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. uluu90m) 80 i 9p)p6b ne deo0qxtn)jbIf the wires carry current in the same directieobtluj0)m0ep 9u p9xqnu0) b)id8n6on,

  Two long parallel wires are placed side-by-side on a h6uve; 1 vblc qgf7gt6 y6oi53dorizontal table. If the wirelg5et6g3vi 16b7oy6vqdc u;f s carry current in opposite directions,

  Consider two current-carrying ci,b+h4.xwa4li yu/wg lrcular 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 mag l li,u.+w4wx/ yhagb4netic 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 ( +gcq q)u8lbqstrand 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,c8)q +ub(g lqq the magnetic moment of the larger loop is

  The maximum torque on a current ca40:t vrmo 5rbyrrying loop occurs when the angle between the loop's magnetic moment 05 vr:rym4bot and the magnetic field vector is

  When placed askew in a magnetic field, a wwig-9 fk73pmn5ae a6current carrying loop that is free to rotate in any direction will experience a torque until its magnetic moment vectf6 3nkipag7 5w-e9awm or

  What fundamental fact underlies the opghm; a7rsc i++)2abjh eration of essentially all electric motors j rb+c 2ms;a7hg+iah)?

  A circular wire loop lies in a horizontal plane opia4mxer*z xxz m;/5hx/5s8 qn a table and carries current in a counterclockwise direction when viewx q / xmp5m/r4;z58zsxa*exh ied 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 par+hs2u2vias m +ticle of mass m and charge 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 uv+shai2 2 usm+niform 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 th;iyv /;r:vaf0 tys k+krough crossed electric and magnetic fields. The forces exerted by these fields are in opposite directions, and only pa vysvfrati:0 ykk+;;/rticles 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 unp)7nt)2qmvv liform magnetic fie7l2m nv qtvp))ld of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in awr sb.bc2rlq,m b5kx3 jo-. 0x 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 placede l+2mehyg)r: in a magnetic field of 0.020 T? The wire makes an + legr)h:m ye2angle of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m longe53 hz bbar0hoi78i)s has a mass of 0.050 kg and is in a magnetic field of 0.10 T. What minimum current in the rod is needed in order fohzr h3 a0b)5bose78ii r the magnetic force to cancel the weight of the rod?

  A stationary proton isue1x:z. lckf +0p. tpm in a uniform magnetic field of 0.20 T. What is the magnitude of the magnetic force on the m : x0klt.p1pef.zu c+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 a7d:j:w s 1iqloos( dn. 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 rljt;y3gm:ar ,.il 3tspeed of $5.0 \times 10^7 \; m/s$ 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 travelinyb2c7 h(oug:q;q k+aa g due 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 a spk5-bog uald5+ihzy3 hf )l-.q eed 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 wi cpjr/ht ki;957w1e 6kntmes9th 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 acceleration of the electron.

  A proton has a speed ofoli7j/1k+ht, +vgqw ghki/ r 8 $3.0 \times 10^6 \; m/s$ 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. be5i 3pqi4t, pWhat is the magnitude of the magnetic field at a distance of 0.tpbii4 e p5q3,15 m from the wire?

  A high power line carrying 1000 A generates what magnerqft .y4ocdc9pid*kz3tu 7 x,j a: +;utic field at the ground, 10 m awajy*.pdtf 3z9uai kc7c 4+ :qx u,;todry?

  How much current must flow for 2.lk44zzwgw t(3t)0lh /l0hoyk lgps$1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long straight wire carrying a currhzs/ wq7bmi-+hvludl01s7 -uent of 5.0 A is the magnitude of the magnetic field due to the wslw- svubzd- 1077hml +qu/ ihire 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 Aspp g8) , ecakbjx2q-* in opposite directions. They are separated by 40 cm. What is the magnetic field in the plane of the wires at as8x-2ac g bj*pqk)e,p 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 i7 (ty6 u4jt fzm wqvg+w7.0tcjn opposite directions. The wires are separated by 0.20 m. What is the magnetic field mf+cgt wz(u67tqv tjw40.j7 myidway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite wlbjv2 omly4(6)uh4 f directions. The wires are separated by 0.20 m. At what point between the two wires are the contributions from tmb(4y24u6)h fl jwlovhe two wires the same?

  Four long parallel wires each carry 2.0 A in the same direction. They are agr 9y2-s4t dtparallel 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 otd2a4-s9 ytgr ne of the wires experience due to the other wires?

  Two long parallel wires carry c33 +vjb 0 hvej:bvucb))w .:cho turm;urrents of 5.0 A and 8.0 A in the opposite direction. The wires u)03t+cbw3je vu:hb jmb v:r)c o.v;hare 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 wire oxpk v.g/lmn s/p1)- e,n-h 6fv qvc9zef radius 4.0 cm when a current of 2.0 s,.-)vl9vnfegpv1nhxq/c em/z- 6 pkA flows in the wire?

  A solenoid 20 cm long is wound witb emda u,m7q38h 5000 turns of wire. What magnetic field is produced at the center of the solenoid when a current of 10 A flows?,8mmad 3qe bu7

  A solenoid with 500 turns is 0.10 m long and carrgwoa, iyi h194f:)dcdies a current of 4.0 A. What str9d) i fdcgo1 y4i:w,ahength of magnetic field will it have at its center?

  How much current must pass through a 400 3h*; z dz9rr(i4mlpgcturn coil 4.0 cm long to generate a 1.0-rhrg;mpc d(zil3z 9 4*T magnetic field at the center?

  How many turns should a 10-cm long solenoid havpn1 i, ju25kjvcc4mc9e 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 6hxd) h.k(7hlu xx g8obozdv3j60**sp.0 A if its dimensions are 4.0 czvp dx7d j360g.s(boxhh lu)8k *oh*xm x 8.0 cm?

  A circular loop of wire of-twxu)j k.c qm2p8os2 radius 0.50 m is in a uniform magnetic field 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 perpendicular to the kw2 2.osp-jxc)q u mt8magnetic field?

  A circular loop of wire of cross-sectional xard d,t 3huaj7ybk,-38t s (narea $0.12 \; m^{2}$ 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 7,sl,1dj3bhd q: st8ppah7;qox4dhmof 2.0 A is in a magnetic field of 3.5 T. The loop has an hjsqd,lpb pq4s3t mx;87 hhao 1,dd7: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 unifor.j yd;vl8bv5 y 4am21c xcsvk3m magnetic field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torqu8a1vj 54cvxcy bl s2.dkv y;3me when the plane of the loop is parallel to the magnetic field?

  A circular loop of wire of radius r dr6 +aq2iu8t0.50 m is in a uniform magnetic field of 0.30 T. The current in the loop t+qr8 dria6u 2is 2.0 A. What is the magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop o7 hio4ukvozw mq 9o-3jymm5l(4lziv05gu 9+af 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) has a speed ejw ,nz86 vocv1d(kkxy5u3/n 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 l*zab9+:ol tkvelocity $6.9 \times 10^6 \; m/s$ 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 lj)yt38 :ah jr1.0 kV and then moves into a magnetic field of 0.040 T. What is the radius of the prhj:tl)8j 3ayr oton's resulting orbit?

  A proton is accelerated from rest throun/f2.xj ihm s)gh 500 V. It enters a magnetic field of 0.30 T o )ihn.2/j fxsmriented perpendicular to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons is accele( ju wk+f9ahkgq7 er)4rated through 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 u97(hqej)+gau4 wkr fkndeflected?